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2000 articles for “Al” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Procurement and Deployment of Equipment for Contracts in Civil Engineering Construction
Abstract: Many contracts have suffered a lot of delays and have faced challenges due to procurement-related matters and inadequate manpower to handle equipment for optimal performance. This study was aimed at the procurement of equipment and utilization of machines in civil engineering contracts. Methodology is basically site visitation, literature review and discussion with engineers, experts and workers on site. Parameters are liable for the procurement of materials and utilizing their lead …
Published in International Journal of Construction Engineering and Planning · Vol. 8, Issue 2, 2022 · pp. 29–37 Read article
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Utilization of Industrial waste in construction Industry – a Review
Abstract: The reuse of industrial wastes will help in solving the environmental pollution issues associated with their disposal, but it will also increase the preservation of natural resources that are reducing rapidly. The major motivation of this project is the increase in waste products and increasing consumption of cement in construction industry. By reducing use of cement cost of construction can be reduced and it also reduces the environmental hazards produced …
Published in International Journal of Construction Engineering and Planning · Vol. 9, Issue 1, 2023 · pp. 57–62 Read article
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Fracture and Failure of Recycled Aggregate Concrete (RAC) – A Review
Abstract: In the world, many countries put into effect the renewal plans and/or the laws and/or the regulations for recent engineering structures which have reached their lifetime, are risk prone and have been built lacking quality engineering, or without considering urban planning. Hence, many structures are demolished and this situation increases the amount of construction and demolition waste (C & DW). Also, resource consumptions are rapidly increased due to excessive constructional …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 31–48 Read article
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Effect of Replacing Rice Husk Ash with Cement and Granulated Blast Furnace Slag with Fine Aggregates on High Performance Concrete
Abstract: Cement and sand are the basic materials for any concrete construction. Now a day’s due to erosion of rivers and considering environmental issues, there is a scarcity of river sand. Many researchers are finding different materials to replace sand and one of the major materials considered in this study is granulated blast furnace slag (GBFS). In recent times, instead of cement many alternative materials are being used as the binding …
Published in International Journal of Concrete Technology · Vol. 2, Issue 2, 2016 · pp. 30–35 Read article
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INVESTIGATION OF STEEL FIBER REINFORCED CONCRETE CORBELS BY EXPERIMENTAL AND ANALYTICAL METHOD
Abstract: In the present paper, an experimental results and predicted values by truss analogy method, ACI Building Code (ACI 381-83) provisions for corbels, and method given by Fattuhi is investigated. The concrete used in the corbels is of M-60 grade. Test were carried out on 27 samples of size 150 x 150 x 200- mm were shear span was varied from 175 to 200 as shown in table (5) and concrete …
Published in International Journal of Concrete Technology · Vol. 2, Issue 2, 2016 · pp. 23–29 Read article
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Effect of Colloidal Nanosilica on High Strength Rice Husk Ash Concrete
Abstract: Nowadays, supplementary cementitious materials (SCMs) are used in concrete because it reduces CO2 emission during. The husks, which are production of cement, reduces cement contents, improve workability, increase strength and enhance durability. Pozzolanic reaction takes place when siliceous or aluminous material comes in contact with calcium hydroxide in the presence of moisture to form compounds possessing cementitious properties approximately 50 percent cellulose, 30 percent lignin and 20 percent silica, are …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 33–43 Read article
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Utilization of Steel Slag as Course Aggregate
Abstract: Concrete is the third largest material consumed by human being after food and water as per WHO. Concrete plays a vital role in the design and construction of the nation’s infrastructure. Almost three quarters of the volume of concrete is composed of aggregate. These are obtained from natural rocks and river beds, thus degradation them slowly. This issue of environment degradation, and need for aggregates demands for the usage of …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 14–18 Read article
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No Fine Concrete
Abstract: No-fine concrete has been in use in many countries over more than a century. Its higher porosity helps in percolating rain water directly to ground and thereby helps in recharging groundwater aquifer. In this study, 3 batches of no-fine concrete each with two different sizes of aggregate were prepared to find the mix that generated high compressive strength and study the effect of percentage of fine aggregate on the compressive …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 18–30 Read article
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An Experimental Study on Concrete by Replacement of Coarse Aggregate with Demolished Building Waste in Crushed Concrete
Abstract: A large amount of construction and demolition wastes are produced annually in India. These waste materials require a large place to dispose and then the disposal of wastes has become a severe problem. The continuous use of natural resources for making conventional concrete leads to the reduction in their availability and results in the increase of the cost of the coarse aggregate and fine aggregate. The possible use of recycling …
Published in International Journal of Concrete Technology · Vol. 4, Issue 1, 2018 · pp. 25–28 Read article
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Effect of varying water temperature on concrete properties
Abstract: The aim of this paper is to determine the effects of mixing-water temperature on the compressive strength, workability and water absorption rate of concrete. Locally available materials were used. Compression tests results showed that the 7 days value of 19.52N/mm2 at 35°C was higher than the value of 9.96N/mm2 at 5°C. The 28th day results for compression test also showed similar trend. The workability of the concrete decreased as the …
Published in International Journal of Concrete Technology · Vol. 6, Issue 1, 2020 · pp. 1–6 Read article
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Effect of Fly Ash on Compressive Strength of Mortar and Brick Aggregate Concrete
Abstract: This paper presents tse influence of fly ash on compressive strength of mortar and brick aggregate concrete. A lot of tests were done about strength of fly ash concrete all over the world. In those experiments, stone chips were generally used as coarse aggregate. In this experiment locally available materials such as burnt clay brick chips as coarse aggregate, sand and fly ash available in Bangladesh (Indian fly ash) were …
Published in International Journal of Concrete Technology · Vol. 7, Issue 1, 2021 · pp. 7–23 Read article
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Mechanical Behavior of Fly Ash Concrete A Critical Review
Abstract: Concrete structure is the most common all over the world. Cement is the major ingredient of concrete. Though the raw materials needed for manufacture of cement are available in most parts of the world, many countries have severe shortage of cement, although their needs are vast. The search for suitable substitute for cement, either partially or fully, has thus become a challenge for planning the development of many of the …
Published in International Journal of Concrete Technology · Vol. 7, Issue 1, 2021 · pp. 29–43 Read article
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Usage of fly ash and slag as supplementary cementitious materials in engineered cementitious composites (ECCs) – A Review
Abstract: Researchers evolved Engineered Cementitious Composite (ECC) in the Nineties, belong to the family of high-performance fibre-reinforced cementitious composites. ECC, additionally known as bendable concrete as a ductile alternative to conventional concrete. ECC requires a huge amount ofsupplementary cementitious material (fly ash), contributing to sustainable development. In this paper, a review of ECC studied with supplementary cementitious materialswhich includefly ash and slag. ECC has better tensile strength, ductility and durability properties …
Published in International Journal of Concrete Technology · Vol. 7, Issue 1, 2021 · pp. 44–55 Read article
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Optimum Weight Design of a Singly Reinforced Rectangular Concrete Beam
Abstract: In this paper, the results of the optimum weight design of a simply supported singly reinforced concrete rectangular beam under uniform loading with respect to bending moment, steel ratio and design variable constraints are discussed. The design constraints were derived based on BS 8110, Part 1, 1997 design rules. The values of the design variables that optimized the self-weight of the beam subject to the constraints considered were obtained using …
Published in International Journal of Concrete Technology · Vol. 7, Issue 2, 2021 · pp. 16–22 Read article
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Regration Analysis of Compressive Strength of Recycled Aggregate Concrete with Ground Granulated Blast-Furnace Slag and Fly Ash
Abstract: In this research work presents the compressive strength of recycled aggregate concrete (RAC) with recycled coarse aggregate (RCA) that coming from single source and the results of an investigation on the influence of recycled coarse aggregate (RCA) on compressive strength of recycled concrete are accessible. Natural aggregates concrete cubes were cured in normal water for 28-days obtain virgin and RCA. The properties of natural coarse aggregate (NCA) and (RCA) and …
Published in International Journal of Concrete Technology · Vol. 8, Issue 1, 2022 · pp. 9–16 Read article
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Evaluation of The Resistance of Concrete by Partial Replacement of Coarse Aggregate with Steel Slag and Cement with Bentonite Powder
Abstract: According to the WHO, concrete is the third most consumed material by humans after food and water. Concrete consists of cement, coarse aggregate, fine aggregate and water. In the production of cement, carbon dioxide is released into the environment, which becomes a big problem for environmental protection. Therefore, there is a need to modify the cement with some natural materials with pozzolanic properties. The aggregates, which are extracted from natural …
Published in International Journal of Concrete Technology · Vol. 8, Issue 1, 2022 · pp. 21–29 Read article
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Experimental Investigation on the Properties of Concrete Replacing Waste Plastic as Aggregates for Solving Waste Management Problem
Abstract: Solid waste management is one of the growing problems of every country. As part of this ongoing program to consider the growing waste management, pollution problem, and prevention framework in India, the Ministry of Environment has suggested various approaches and ways through which we can either recycle or use the most polluting materials like plastic. The present study covers one of the ways through which to recycle one of the …
Published in International Journal of Concrete Technology · Vol. 9, Issue 1, 2023 · pp. 17–25 Read article
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A Review on Waste Bakelite as Replacement Partially Over Coarse Aggregate in Concrete Mix
Abstract: Various components in India are made up of Bakelite. Saffron Global Dumping of waste Bakelite through landfill is not allowed due to it effect on soil mass and open burning is not allow because of the emission of harmful gases which cause air pollution. A large space of storehouse requires to store large amount of area for keeping waste Bakelite which becomes management problem of waste. Despite managing waste Bakelite …
Published in International Journal of Concrete Technology · Vol. 9, Issue 2, 2023 · pp. 8–13 Read article
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Application of Suitable Admixtures (Lime and RHA) for Improvement of Pavement Subgrade
Abstract: Abstract The quality of a pavement depends on the strength of its sub-grade. The present investigation has been carried out with easily available materials like lime and rice husk ash mixed individually and in combinations with different proportions. The different percentages of lime with respect to weight of dry soil were 2%, 4%, 6%, 8% 10% and for rice husk ash (RHA) were 3%, 6%, 9% and 12%. In each …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 1, Issue 2, 2015 · pp. 14–31 Read article
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Taguchis Parameter Design Approach to normal cement concrete mixture proportioning
Abstract: This paper presents the results of the optimization of normal cement concrete mixture using Taguchi approach. The Taguchi experiments were designed using an L9 orthogonal array with three factors and three levels each. The water-cement ratio (W/C), total aggregate-cement ratio (TA/C) and total aggregate-water ratio (TA/W) were treated as the control factors. The effects of the water-cement ratio, total aggregate-cement ratio and total aggregate-water ratio on the compressive strength were …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 4, Issue 2, 2018 · pp. 23–29 Read article