Civil Engineering - Project Reports

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Comparison of conventional concrete and special cement concrete
(AIKTC, 2015-05) Mujawar, Shafi; Syed, Shahabuddin (11CE58); Chhatriwala, Farhan (12CE100); Shaikh, Shahid Madni (11CE48)
Concrete is widely used construction material in the world. nowdays the world witnessing the construction of more and more challenging and difficult engineering structures. so the concrete need to posses very high strength and sufficient workability. Researches all the world developing high performance concrete by adding various fibres, admixtures in different proportion . various fibres like glass ,carbon, polypropylene and provide improvement in concrete properties like tensile strength fatigue characteristic, durability, shrinkage, impact erosion resistence and serviceability of concrete
Structural Health Monitoring by Non Destructive Techniques On Concrete
(AIKTC, 2015-05) Sarvade, Shivaji; Tiwari, Shivendra (11CE54); Katrekar, Shweta (12CE64); Girilwala, Mustafa (12CE101); Shahpurwala, Abdul Kader (12CE102)
The concept of nondestructive testing (NDT) is to obtain material properties “in place” specimens without the destruction of the specimens and to do the structural health monitoring. NDT using Rebound hammer, Ultra pulse velocity, Halfcell potential, core cutter, carbonation depth, rebar locator, Rapid chloride penetration test, electric resistivity meter test and vibration base analysis by data analoger are very popular and highly effective in conducting structural health monitoring. The structure can be investigated by using a visual inspection, NDT, laboratory and field test performance. In this article a review of these tests have been provided to conduct effective structural health monitoring of a RCC structure. The estimation of mechanical properties of concrete can be carried out by several methods; destructive and nondestructive. In this context, the crushing of the samples is the usual destructive test to determine the concrete strength. The rebound hammer test and the ultrasonic device are used in the field of nondestructive tests to determine respectively the compression strength and the ultrasonic pulse velocity (UPV) in the concrete. In this work, eight concrete compositions were used to prepare cylindrical specimens (16 cm x 32 cm) by varying the water/ cement ratio and the cement dosage. An experimental study was conducted to determine the compressive strength of concrete by destructive (compression) and nondestructive (rebound hammer) tests at different ages (7, 14 and 28 days). In addition, the influence of several factors on the modulus of elasticity determined by pulse velocity test was investigated. These factors mainly included the age of concrete and the water/ cement ratio. The results showed that the difference between the resistance values obtained by destructive and nondestructive methods decreases with increasing age of concrete. The dynamic modulus of elasticity increases with the curing time of the concrete until the age of three months. In addition, a simplified expression has been proposed to estimate the rebound number from the value of the dynamic modulus of elasticity determined by pulse velocity test.
Experimental investigation and prediction of compresive strength of concrete using soft computing techniques with different additives
(AIKTC, 2015-05) Magar, Rajendra; Ansari, Shahbaz (11CE07); Khan, Afroz (11CE22); Khan, Mohd Haroon Mohd Nafis (11CE24); Khan, Rahil Lodhi Hashmatullah (11CE26)
High Performance Concrete (HPC) is the latest development in concrete, But HPC not only demands High cement consumption, which pushes the natural resources towards depletion, but also increases C02 emission on a higher extent. In the recent year’s use of Supplementary Cementitious Materials (SCMs) is increased due to environment concerns, conservation of resource & economy because most of them are generally Industrial waste products such as fly ash, GGBS & micro silica. One of the costliest constituent of HPC is ultrafine material such as micro silica, alccofine. In recent years with the advancement in technology ultrafine fly ash is now being produced which is cheaper ultrafine material but, with less literature available on it. In available literature on Ternary blend concrete the level of replacement was restricted up to 30%-35%. In this Experimental Investigation an attempt was made to investigate compressive strength (100MPa) of concrete by replacing Cement on 40%, 45%, 50%, by incorporating P100 fly ash as an ultrafine material and GGBS. Each replacement was further divided into three sub parts (40%F.A-60%GGBS), (45%F.A- 55%GGBS), (50%F.A-50%GGBS). Among which 40% replacement of cement (50%F.a- 50%GGBS) gave maximum strength. Nominal mix was prepared with only OPC with w/c of 0.24.and all other ternary mixes was made on w/c of 0.2 to have an edge when compared with strength of nominal mix. Nowadays, soft computing techniques are used to predict the properties of concrete and hence reduce the experimental work. Thus, a neural network also known as a parallel distributed processing network, is used as computing paradigm that is loosely modeled after structures of the brain. It consists of interconnected processing elements called nodes or neurons that work together to produce an output function. This experimental investigation presents the application of Multiple Linear Regression (MLR) and Artificial Neural Network (ANN) techniques for developing the model to predict the compressive strength of the concrete with SCMs. For this purpose, a systematic laboratory investigation was carried out. The compressive strength was evaluated on various mixes for 3 days, 7days, 14 days and 28 days of curing period. The data generated in the lab was used for development of the MLR and ANN model. The data used in the models are arranged in the format of four input parameters that cover the contents of OPC, FA, GGBS and w/c ratio respectively and one dependent variable as compressive strength of concrete for both MLR and ANN. Networks are trained and tested for various combinations input and output data sets. Keywords: High Performance Concrete (HPC), Supplementary Cementitious Materials (SCMs), Fly Ash (FA), Ground Granulated Blast Furnace Slag (GGBS), Artificial Neural Network (ANN), Multi Linear Regression (MLR).
Environmental impact analysis of pharmaceutical waste
(AIKTC, 2015-05) Shah, Dhaval; Arote, Swapnil (12CE90); Atkari, Ketan (12CE93); Chalke, Saurabh (12CE97); Kale, Aniket (12CE98)
Pharmaceutical industry is one of the major industries causing water pollution. In India, It generates about Million litres of waste water processed depending upon the process employed and product manufactured. Considering the increased demand for Drugs, the Drug based industries in India is expected to grow rapidly and have the waste generation and related environmental problems are also assumed increased importance. Poorly treated waste water with high levels of pollutants caused by poor design, operation or treatment systems creates major environmental problems when discharged to surface water or land. Considering the above stated implications an attempt has been made in the present project to evaluate one of the WWTP for Drug industry. Samples were collected from six points; Raw effluent [P-1], Oil and grease trap [P-2], Equalization tank [P-3], Aeration tank 1 [P-4], Aeration tank 2 [P-5] and Secondary clarifier [P-6] to evaluate the performance of WWTP. Parameters analyzed for evaluation of performance of WWTP are COD, BOD5 at 20° C, TSS, TDS, oil and grease, Chloride and Alkalinity. Parameters like pH and oil & grease were used to access the suitability of secondary effluent for reuse in gardening or some other purposes. The COD, BOD5 at 20° C and TSS removal efficiency of WWTP were reduced upto very great extent hence it is suitable to dispose it off into water bodies.
Analysis and design of prestressed I-Grider
(AIKTC, 2015-05) Magar, Rajendra; Bincy, Babu (11CE03); Bhat, Aravind (11CE12); Shaikh, Mohd. Tazir (11CE45); Siddique, Tanveer (11CE55)
Post-tensioned simply supported pre-stressed concrete (PC) I-girder bridges are widely used bridge system for short to medium span (20m to 50m) highway bridges, due to its moderate self -weight, structural efficiency, ease of fabrication, low maintenance etc. This study is on design and analysis of prestressed I- girder. Design constraints were decided using IRC 6:2010 for loading, IRC 18:2000 for minimum dimension requirement, IRC 21:2000 for concrete stresses. To formulate the entire problem for a couple of span under class A and class 70R loading, obtain shear force and bending moment at regular intervals along the beam. The software STAAD PRO is used for the analysis and design of prestressed concrete girders.
Effect of coconut fibre in concrete and to improve the workability by incorporating an admixture
(AIKTC, 2016-05) Honnutagi, Abdul Razak; Shaikh, Md. Shadab (12CE54); Siddiqui, Saquib (12CE60); Hamza, Sayyed (12CE46); Shaikh, Shamsuddoha (12CE56)
Natural fibres are those fibre which are pollution free, environment friendly and does not have any bad effect on climate. Every year there is ample amount of wastages of natural fibre .If these natural fibres used as a construction material it could save the bio-reserves. They acts as green construction material. Amongst all natural fibres, CF is the fibre which has the better physical and chemical property also it is renewable, cheap, resistant to thermal conductivity, more durable, highest toughness, most ductile then the other natural fibre, it is capable of taking strain four time more than other fibres. Hence, CF is a best material to be used in construction. The objective of this investigation is to enhance the strength properties of concrete using coconut fibre. Addition of CF resulted into cohesive mix. To overcome this drawback the suitable dosage of admixture was incorporated without effecting it strength properties. In the present study the behavior of specimen with respect to compressive strength and the cracking behavior of concrete and CFRC has been investigated. According to I.S. specification different test is conducted to enhance the workability and strength properties by addition of CF. different test such as slump test and flow table test on fresh concrete is carried out and compressive strength and split tensile strength is carried out on hard concrete. The present study involves the use of super plasticizer, master glenium 8654 (0.4% by mass cone test) in M30 grade of concrete (grade ratio =1:1.918:2.898) which helps in enhancing the workability without affecting the strength with CF (2%,3.5%,5%) and is compared with the conventional concrete of same grade.
Production and mechanical properties of high performance concrete
(AIKTC, 2016-05) Patil, Dada S.; Arai, Affan (13CE67); Kamble, Dinesh (12CE24); Jain, Babul (12CE96; Lambate, Salman (12CE40)
Increasing demands of the new millennium for sustainable and durable structures, and the limited available resources, have awakened the need for newer construction technologies and the efficient use of structural materials. Strengths of concrete such as tensile, flexural, shearing and bond strength are all related to the compressive strength. For this reason, it means that concrete with high compressive strength will also enhance other properties. Mechanical properties of hardened concrete are the most important property which civil engineers or everyone who work with concretes should pay attention. These properties are compressive strength, modulus of elasticity, tensile strength, creep and shrinkage. In this research, the first three properties of HPC were investigated. This Experimental investigation presents a study of properties of High performance concrete and comparing the properties with different codes and literature. The study focuses mainly on the properties like compressive strength, spilt tensile strength, modulus of rupture and modulus of elasticity of a high performance GGBS concrete by 0%, 5% and 10% of GGBS replacement with OPC to achieve strength of M60 and M80. For M60 and M80 grade concrete maximum strength achieved by replacing 5% GGBS with OPC and decreased for 10% replacement. In this study statistical equation has been proposed which is the relation between spilt tensile strength and cube compressive strength, and, modulus of rupture and spilt tensile strength. The equations proposed are in good agreement with ACI and other literature. The equations proposed by other literature are too conservative and need to modify for High performance concrete.
experimental investigation on properties of self compacting concrete using mineral admixtures
(AIKTC, 2016-05) Mahajan, Girish; Shaikh, Md. Ismail(11CE44); Kutrekar, Mustufa(11CE30); Sayed, AasarMehdi (13CE75); Sayyed, Md. Mehdi(12CE82)
A self-compacting concrete (SCC) is the one that can be placed in the form and can go through obstructions by its own weight and without the need of vibration. Since its first development in Japan in 1988, SCC has gained wider acceptance in Japan, Europe and USA due to its inherent distinct advantages. The major advantage of this method is that SCC technology offers the opportunity to minimize or eliminate concrete placement problems in difficult conditions. It avoids having to repeat the same kind of quality control test on concrete, which consumes both time and labour. Construction and placing becomes faster & easier. It eliminates the need for vibration & reducing the noise pollution. It improves the filling capacity of highly congested structural members. SCC provides better quality especially in the members having reinforcement congestion or decreasing the permeability and improving durability of concrete. The primary aim of this study is to explore the feasibility of using SCC by examining its basic properties. An extensive literature survey was conducted to explore the present state of knowledge on the durability performance of self-consolidating concrete. However, because it usually requires a larger content of binder and chemical admixtures compared to ordinary concrete, its material cost is generally 20–50% higher, which has been a major hindrance to a wider implementation of its use. There is growing evidence that incorporating high volumes of mineral admixtures and micro fillers as partial replacement for portland cement in SCC can make it cost effective. However, the durability of such SCC needs to be proven. This research consists of: (i) development of a suitable mix for SCC that would satisfy the requirements of the plastic state; (ii) casting of concrete samples and testing them for compressive strength and split tensile strength. Local aggregates, cement, admixtures and additives produced by the local suppliers were used in this work. The significance of this work lies in its attempt to provide some performance data of SCC so as to draw attention to the possible use of SCC.
Planning and scheduling of a high rise building using primavera
(AIKTC, 2016-05) Jadhav, Umesh; Khan, Muhammad (12CE32); Khokar, Abdul (12CE39); Khan, Mubashir (12CE42)
With the onset of High Rise Buildings in metropolitan cities, planning and scheduling has become a major concept to be considered for a smooth execution of construction works. Oracle’s Primavera P6 is an effective tool for determining an ideal schedule for construction activities. This project serves as a perfect reference frame for scheduling different High Rise Buildings. All the important steps like creating an EPS, creating a WBS, linking of activities according to their interdependence and availability of resources, reduction of float values, and determination of Critical Path are clearly exhibited in this report.
Bacterial concrete - A remedy for micro cracks
(AIKTC, 2016-05) Maste, Junaid; Ansari, Md. Parvez (13CE74); Kadri, Aasad (13CE86); Makandar, Imtiyaz (13CE80)
Carbonate-producing bacteria have attracted lots of interest as a promising, natural, environmental friendly novel technique to improvement of concrete characteristics. Considerable research has been conducted on utilizing microbial-induced carbonate precipitation to mitigate several concrete problems such as crack repair, reduction and modification of porosity and permeability. Furthermore, bacterial carbonate precipitation (bio deposition) has shown positive influences on compressive strength improvement of concrete. In the meantime, it seems that the study related to the optimum dosage of bacterial solution and its effect on the durability of concrete has not been comprehensively investigated. Therefore, it is decided to carry out an investigation of determining optimum dosages of bacterial solution required for concrete by forming various concrete cube samples having variations of bacterial solution viz. 15 ml, 30 ml, 45 ml, 60 ml and 75 ml. Further these various samples are tested under various laboratory methods viz. slump cone test, compressive strength testing machine, ultrasonic pulse velocity test, plate count cells and scanning electron microscopes thereby an optimum dosage required is computed. Bacterial concrete is found to be superior as compare to that of conventional concrete in all the aspects of durability. Among the different specimen incorporated it shows that bacterial concrete containing 45ml solution is the optimum dosage required, after which the strength found to be stable or decreased.
Recycling of Concrete using Chemical Admixtures
(AIKTC, 2016-05) Dasgupta, Rohan; Khan, Abdul Karim (11CE20); Shafi, Abdul (12CE70); Shaikh, Ramjan (13CE84)
The development in the construction industry all over the world is progressing day by day. High-tech and modernized designs are being built and old buildings are being demolished or renovated. One of the things builders, developers and contractors must consider during construction, renovation or demolition is where to put all the debris. When structures made of concrete are to be demolished, concrete recycling is an increasingly common method of disposing of the rubble. Concrete debris was once routinely shipped to landfills for disposal, but recycling has a number of benefits that has made it more attractive option in this age of greater environmental awareness, more environmental laws, and the desire to keep construction costs down. In this study, we are aiming to design a concrete debris mixture as mortar mix that will meet the IS requirements, in order to help contribute to the industry in saving the environment, to encourage the government to find solutions regarding the disposal to landfills of waste materials and save the environment, to provide new knowledge to the contractors and developers on how to improve the construction industry methods and services by using recycled concrete debris, and to sustain good product performance and meet recycling goals. The objectives of this project are to prepare a mix design of M20 grade concrete using concrete rubble from demolition site and admixture (super-plasticizer), to prepare a mix design of M25 grade concrete using concrete rubble from demolition site and admixture (super-plasticizer), to carry out Slump Cone Test on the above mentioned concrete mixes, to carry out Compressive Strength Test on the above mentioned concrete mixes, to carry out different tests on recycled aggregates & natural aggregates & compare their results and to finally conclude the effectiveness of concrete recycling based on the above test results
Statistical modelling for prediction of soil parameters at AIKTC, Panvel
(AIKTC, 2016-05) Parkar, Fauwaz; Duduke, Wasif (12CE17); Jiwrak, Amir (11CE18); Shaikh, Md. Abrar (12CE52)
The purpose of this project is to investigate the behaviour of soil of our campus and to know its various parameters. For investigation, the soil sample was taken from the place where future construction is proposed. Sample collection was done using Excavator. The collected samples were classified as per IS classification system. The field moisture content of soil samples was determined using oven drying method and various other properties such as specific gravity etc. was determined. Optimum moisture content of the soil was determined using modified proctor test which was further used to determine other soil parameters such as CBR value, angle of internal friction, etc. Various soil parameters were obtained after performing laboratory experiments. Modelling of these soil parameters was done using XLSTAT software. Equations for various parameters are developed using multiple regression. Soil parameters for different depths were predicted using the models prepared.
Design of Flexible Airfield Pavement
(AIKTC, 2016-05) Shaikh, Nadeem Raees Ahmed (12CE72); Shaikh, Mohammed Farhan (12CE94); Shaikh, Karim Ibrahim (12CE71); Tiwari, Vishnuchandra (11CE59)
The growth of economy of any country depends upon the development of transportation. In country like India, having second largest system of railways in the world and fully developed highway transportation, there is growing demand for air transportation. Demands for larger capacity and more facilities at the airports are increasing at a faster rate. The increased number of airlines and their increasing fleet size and flight frequencies has created competitive domestic services with fare reductions, in spite of zooming oil prices. Indian airport besides runway capacities are also lacking very much in accommodating new airline offices and their demands for handling passengers. Present growth rate places Indian airports among the fastest growing in the world, next to China. We took up this project of Airport Pavement Design by keeping in mind the growth rate of Air traffic and Air passengers in India. We aim at understanding how exactly does the huge load of aero planes is transferred to the pavement and the sub grade below. We started our work by carrying out literature review in this regard.
Seismic assessment of (G+4) R.C.C. frame building using pushover analysis
(AIKTC, 2016-05) Sarvade, Shivaji; Ansari, Sharique (11CE08); Behlim, Abusufiyan (11CE09); Pasi, Akash (12CE44); Qureshi, Saifali (11CE39)
India is a developing country with a variety of building practices and social and economic structure, which needs to evolve its own strategies for seismic hazard evaluation. The last decade has pointed to our shortcoming in risk reduction programmes, during the few damaging earthquakes. Due to this earthquake alone in India there was immense loss of life and property. After this painful loss attention is now being given to the evaluation of the adequacy of strength in structures to resist strong ground motions. After Bhuj earthquake IS-1893 was revised and published in the year 2002, before this incident it was revised in 1984. The code was first published in 1962 as ‘Recommendations for Earthquake Resistant Design of Structure’. The main reason for the loss of life and property was inadequacy of knowledge of behavior of structures during ground motions. The vulnerability of the structures against seismic activity must be essentially studied. The most preferred method for seismic evaluation is Inelastic static analysis or Pushover analysis due to its simplicity. Inelastic static analysis procedures include Capacity Spectrum Method, Displacement Coefficient Method and the Secant Method. In this study we are assessing seismic performance of G+4 regular RCC structure. The structure has been evaluated using Pushover Analysis. (Keywords: Seismic Assessment, Response Spectrum, IS-1893:2002, Pushover Analysis.)
Analytical investigation and comparison between steel laced and battended columns
(AIKTC, 2016-05) Hawelikar, Shoukin Chandrakant; Shatrunjay, Tripathi (11CE51); Hrishikesh, Jaiswar (13CE77)
Built-up (combined section) columns are widely used in steel construction especially for relatively long columns. Built-up columns are often used in steel buildings and bridges providing economical solutions in cases of large spans and/or heavy loads or in other words a built-up battened column is a kind of compression member consisting of two identical longitudinal elements slightly separated and connected to each other at only a few places along their length by means of battens. Depending on the way that the flanges are connected to each other, they can be grouped into laced and battened built-up columns. Since these sections often provide sufficient flexural stiffness to resist buck- ling without increasing the area of the sections. However, such built-up (combined section) columns are more flexible than solid columns with the same moment of inertia, which must be taken into account in the design. The ultimate capacity of battened columns mainly depends on the local behaviour of the components, the global behaviour of the column as well as the internal forces in the connecting elements. Mainly while considering designing of both built up column the designing procedure is same and it’s observed that the lacing column offers higher strength than that of the battened built up column. As per structure requirement as engineer we have to select any one of these two built-up compression members. So our aim is narrowed towards the study of behaviour of these two columns on various combinations of lodging and length and accordingly the cost of the column on stability criterion as per IS800:2007.
Rain water harvesting and conservation of water for AIKTC and ARKP
(AIKTC, 2016-05) Sarvade, Shivaji; Ansari, Abid (12CE06); Ansari, Ezaz (12CE07); Sayyed, Aquib (12CE47); Usmani, Kashif (12CE62)
Till about thirty years back, the areas around our homes and offices used to be unpaved and the rain falling on these areas would percolate into the soil and remain there for being drawn through shallow open wells. Consequently open wells and not - so - deep bore wells started drying up. The reason is that no sincere attempt is made to replenish the ground water table with rainwater during the monsoon. The Rainwater harvesting is the simple collection or storing of water through scientific techniques from the areas where the rain falls. It involves utilization of rain water for the domestic or the agricultural purpose. The method of rain water harvesting has been into practice since ancient times. It is as far the best possible way to conserve water and awaken the society towards the importance of water. The method is simple and cost effective too. It is especially beneficial in the areas, which faces the scarcity of water. This is when Rain water Harvesting proves to be the most effective way to conserve water. We can collect the rain water into the tanks and prevent it from flowing into drains and being wasted. It is practiced on the large scale in the metropolitan cities. Rain water harvesting comprises of storage of water and water recharging through the technical process. India is land of versatile whether where inconsistency in rain is frequent. So as an option of having a back-up for water needs, one system becomes necessary which provides much saving of water. Although rainwater harvesting (RWH) is gaining popularity as a sustainable water saving system in urban as well as rural areas, estimating required storage area for water remains an important design challenge so we are going to design an effective plan by which we can collect rain water into a storage for a particular campus and we are also going to make a design by which we can recharge the ground water. Present study majorly focuses on Rooftop rainwater harvesting (RRWH) of the study area as Anjuman-I-Islam Kalsekar Technical Campus and Abdul Razzak Kalsekar Polytechnic, New The prime objective of this study is to fulfill the scarcity of the water in the campus and then use it for domestic and drinking water supply. (Keywords: Rain water Harvesting, Roof top water harvesting, sustainable development, conservation of water)
Evaluating performance and costing of green building
(AIKTC, 2016-05) Mahajan, Girish; Kaji, Sadik; Shaikh, Wasim; Nachan, Aarish
Development is gradually converting the bio diverse habitat in to a concrete jungle which consists of an impervious cover to landscape resulting into a lack of woodland habitat and conservation of the most precious element on the earth “WATER”. The vast canvas of built environment necessitates a greener color into it picture. Sustainable development is a development that “meets the needs of the present without compromising the ability of future generations to meet their own needs” Sustainable construction tries to incorporate the general sustainable development concepts into conventional construction practices. One of the ways to achieve sustainable construction is the Green Building Design, which is the core area of attention for greener built environment. Green Building Designs have environmental considerations as a basic scrutinizing criteria which attempts to integrate and achieve concepts of energy efficiency, water conservation and recharge, solid waste management, exploration of renewable energy resources, use of eco friendly materials and to minimize the negative impact on the nature, plant and animal species, non renewable material conservation and preserve resources and processes that prevail in nature. Several Green Building Rating Systems have been developed to objectively evaluate energy and environmental performance that spans the broad spectrum of sustainability.
Structural health monitoring by non destructive tchniques on concrete
(AIKTC, 2016-05) Sarvade, Shivaji; Tiwari, Shivendra (11CE54); Katrekar, Shweta (12CE64); Girilwala, Mustafa (12CE101); Shahpurwala, AbdulKader (12CE102)
The concept of non-destructive testing (NDT) is to obtain material properties “in place” specimens without the destruction of the specimens and to do the structural health monitoring. NDT using Rebound hammer, Ultra pulse velocity, Half-cell potential, core cutter, carbonation depth, rebar locator, Rapid chloride penetration test, electric resistivity meter test and vibration base analysis by data analoger are very popular and highly effective in conducting structural health monitoring. The structure can be investigated by using a visual inspection, NDT, laboratory and field test performance. In this article a review of these tests have been provided to conduct effective structural health monitoring of a RCC structure. The estimation of mechanical properties of concrete can be carried out by several methods; destructive and non-destructive. In this context, the crushing of the samples is the usual destructive test to determine the concrete strength. The rebound hammer test and the ultrasonic device are used in the field of non-destructive tests to determine respectively the compression strength and the ultrasonic pulse velocity (UPV) in the concrete. In this work, eight concrete compositions were used to prepare cylindrical specimens (16 cm x 32 cm) by varying the water/ cement ratio and the cement dosage. An experimental study was conducted to determine the compressive strength of concrete by destructive (compression) and non-destructive (rebound hammer) tests at different ages (7, 14 and 28 days). In addition, the influence of several factors on the modulus of elasticity determined by pulse velocity test was investigated. These factors mainly included the age of concrete and the water/ cement ratio. The results showed that the difference between the resistance values obtained by destructive and non-destructive methods decreases with increasing age of concrete. The dynamic modulus of elasticity increases with the curing time of the concrete until the age of three months. In addition, a simplified expression has been proposed to estimate the rebound number from the value of the dynamic modulus of elasticity determined by pulse velocity test.
Experimental investigation on internally cured concrete
(AIKTC, 2016-05) Siddiqui, Mohammed Junaid; Bhadki, Safwan Mohd.Hanif (11CE10); Bodale, Ahamad Mahd. Ashraf (13CE66); Sayyad, KaleemSaleem (13CE65); Ulde, Nuh Naeem (11CE60)
As water is becoming a scarce material day-by-day, there is an urgent need to do research work pertaining to saving of water in making concrete and in constructions. Curing of concrete is maintaining satisfactory moisture content in concrete during its early stages in order to develop the desired properties. However, good curing is not always practical in many cases. Curing of concrete plays a major role in developing the concrete microstructure and pore structure and hence improves its durability and performance. Keeping importance to this, an attempt has been made to develop internal-curing concrete by using Poly Ethylene Glycol (PEG-400). In this experimental investigation the strength characteristics of Normal Strength Concrete and high strength concrete, cast with the self-curing agent PEG-400 have been studied and compared with the corresponding conventionally cured concrete. IS method of mix design was adopted, for the normal strength internal curing concrete of grade M20 and for M50 grade of concrete is design on trial and error basis. For producing internal-curing concrete trial dosage of 1%, 2% and 3% of PEG-400 by weight of cement was used and tested. It was observed that after implementation of new technique the water consumption for curing was significantly reduced by 100%.
Characterization of sewage and design of sewage treatment plant for Anjuman-I-Islam's Kalsekar Technical Campus
(AIKTC, 2016-05) Shah, Dhaval; Kawade, Ankita (12CE03); Lokhande, Archana (12CE05)
There are two fundamental reasons for treatment of waste water viz. prevention of pollution and thereby protecting the environmental and protecting the public health by safe guarding water supplies and preventing the spread of water borne diseases. when untreated sewage is discharged sewage may be washed up on to the shore, near the point of disposal, where they decomposes and create foul smells and bad odours. The discharged sewage will contaminate the natural body water i.e. river, lake etc with pathogenic bacteria. The Anjuman – I – Islam’s Kalsekar technical campus, New Panvel is important educational institutes in the Navi Mumbai with a large number of students studying in its campus consisting of various department laboratories, classrooms, canteen, bathroom and academic blocks. There will be hostel of 500 students capacity and residential quarters will be constructed in future. It is absolutely necessary to study the Characteristics and behavior of sewage, to ensure its safe disposal. This study will help in determining the degree and type of treatment required to be given to given sewage, and thus avoid the pollution of the source of its disposal. The present study involves the analysis of pH value, total solids, total suspended solids, hardness, acidity, alkalinity, chloride, chlorine, BOD and DO. The samplings of the domestic waste from college have been done in different times of the day to have an average data of the measured parameters. The average values of pH, Turbidity, Acidity, Chloride, Residual Chlorine, Hardness, Total Solid, BOD, DO, Alkalinity. A sewage treatment plant has been designed with the treatment units, a bar screen, an aeration tank and a collection pit.

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