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1871 articles for “Paper”
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A Technical Analysis of Fly Ash Concrete for Compressive Strength
Abstract: Fly ash is a waste produced by thermal power plants and used as a supplementary cementitious material (SCM) in the production of Portland cement concrete. A supplementary cementitious material, when used in combination with Portland cement, pays to the properties of the hardened concrete through hydraulic or pozzolanic activity, or both. At present fly ash, is a big environmental concern and issues. The analysis presented in this paper is carried …
Published in International Journal of Concrete Technology · Vol. 4, Issue 1, 2018 · pp. 21–24 Read article
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Experimental Investigation On Partial Replacement Of Fine Aggregate By Wood Ash On Concrete
Abstract: This paper intends to investigate the possibility of producing low costs enhanced performance concrete by wood ash. By taking the enormous amount of sand in river beds, it affects the environment badly and demand for fine aggregate is increase day by day. So by partially replacing Prosopis juliflora ash with fine aggregate in construction field, It can serve both the purposes of meeting the demands of construction industry and at …
Published in International Journal of Concrete Technology · Vol. 4, Issue 2, 2018 · pp. 10–16 Read article
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Aerocon Bricks
Abstract: Various low-cost housing projects are considered by a growing demand chiefly due to urbanisation. The collection of building materials should chance the requirements of local conditions to enhance quality of life for the most needed ones by building new structures and/or by improving existing structures. Various studies showed that a big variety of wall materials have been used in different building systems with traditional and modern construction methods, but only …
Published in International Journal of Concrete Technology · Vol. 4, Issue 2, 2018 · pp. 37–48 Read article
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TO IMPROVE THE EFFICIENCY OF SILICA FUME CONCRETE
Abstract: A suitable introduction of silica fume in concrete improves both the mechanical and chemical properties of the concrete. The long-live compressive strength of silica-fume concrete has been recently questioned by some researchers and they were regular in touch of it.This paper reports the results of compressive strength data on strength of silica which is on 4- to 6-year-old cores attained from well-documented field experiments which where both silica-fume and non-silica …
Published in International Journal of Concrete Technology · Vol. 5, Issue 1, 2019 · pp. 39–44 Read article
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Effect of Accelerated Curing and Normal Curing Regimes on UFGGBFS-Based Semi-Lightweight Concrete
Abstract: This paper deals with the performance of semi-lightweight concrete (sLWC), prepared by using calcite powder pellets as coarse aggregates which was improved by partial replacement of cement with UFGGBFS (ultrafine ground granulated blast-furnace slag). Cement could be replaced by UFGGBFS as 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, and 70% to enhance the strength and durability properties of concrete. High-range water-reducing admixtures (HRWA) …
Published in International Journal of Concrete Technology · Vol. 5, Issue 1, 2019 · pp. 1–7 Read article
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Effect of Steel Slag and Quarry Dust on the Flexural Strength of Concrete
Abstract: The effect of quarry dust and steel slag on the flexural strength of concrete has been experimentally studied and reported in this paper. Concrete used was prepared by replacing 75% of steel slag in replacement with sand and replacing cement by 5%, 10%, 15% and 20% with quarry dust. Also, conventional concrete was prepared as reference concrete for comparison. 100-mm cube and 100 mm × 100 mm × 500 mm …
Published in International Journal of Concrete Technology · Vol. 5, Issue 1, 2019 · pp. 8–13 Read article
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Replacement of Natural Fine Aggregate by Copper Slag
Abstract: This paper presents the applications of replacement of natural fine aggregate using copper slag. The study is conducted by replacing the fine aggregate from 0 to 100% at the interval of 20% on M25 grade concrete and 1.8% superplasticizer by weight of cement. The compressive strength, split tensile strength and flexural test is studied and reported. It is observed that replacement of natural fine aggregate at 40% (CS40) gives higher …
Published in International Journal of Concrete Technology · Vol. 5, Issue 2, 2019 · pp. 23–28 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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Study the Behavior of Single cell Rectangular box girder bridge with the help of AASHTO and IRC loadings
Abstract: Generally bridge carries a road or railway across natural or artificial obstacles such as river, canalor another railway or another road. Bridge construction is one of the difficult traffic infrastructureconstructions. The structural method of different girder bridge having no of girder. The modeling andanalysis of bridge structure is little bit more time consuming and costly as compared to othersstructure. In this paper present an investigation into behaviors like displacement bending …
Published in International Journal of Concrete Technology · Vol. 7, Issue 1, 2021 · pp. 1–6 Read article
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An Investigation on Aggregate Distribution in Concrete
Abstract: Falling behavior is generally studied by mathematicians. The first study is conducted by Comte de Buffon with name “Falling needles experiment” and is widely known. Buffon researched the falling needle behavior finding the fall of needles in relation with Pi. However, although aggregates are fallen to the mould in cement paste, falling behaviour of concrete is rarely studied considering the statistical parameters of the fall.Accordingly, an experimental study is conducted …
Published in International Journal of Concrete Technology · Vol. 7, Issue 2, 2021 · pp. 1–8 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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Scrap Steel Fiber Reinforce Concrete
Abstract: The research mentioned on this paper turned into finished to look at the feasibility of the usage of metal scrap received from lathe system in fiber bolstered concrete via way of means of checking the compressive strength, and flexural strength of M20 concrete and consequently optimizing the fiber proportions. In this look at, a contrast has been made among undeniable cement concrete and metal scrap fiber bolstered concrete (SSFRC). The …
Published in International Journal of Concrete Technology · Vol. 7, Issue 2, 2021 · pp. 30–38 Read article
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Study on Properties of Concrete Cured With Poly Ethylene Glycol-600
Abstract: After water, concrete is the most using material globally. Without concrete, the world is unimaginable. The foundation of civilization is concrete. Coarse aggregate, cement ,fine aggregate and water are the main ingredients in concrete, which requires curing to attain its strength. Concrete must therefore cure for 28 days in order to complete the necessary hydration, desired strength. For the traditional curing processes, a lot of water is needed. This becomes …
Published in International Journal of Concrete Technology · Vol. 8, Issue 2, 2022 · pp. 14–21 Read article
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Study the effect of single and double layers of welded mesh & percentages of steel fiber on different sample
Abstract: Ferrocement is a thin composite structure made a rich mortar mix based on cement with relatively different type of wire mesh. The main objective of this research paper is to constructed a low cost insulation resistance residential building system for urban as well as for ruler development. Ferrocement technologies reduced cost, time and structural load at least 30% to 50%. It is long-lasting and cost-effective due to locally available material …
Published in International Journal of Concrete Technology · Vol. 8, Issue 2, 2022 · pp. 22–30 Read article
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Exploring the Integration of Recycled Waste Materials in Concrete: A Comprehensive Overview
Abstract: The utilization of recycled materials from construction sites has experienced a notable increase in recent times, driven by the principle of efficient resource usage established by the International Council of Building in 1994. Recycled materials, including recycled concrete aggregate or brick aggregate sourced from construction and demolition waste, waste glass from municipal waste or recycled sources, and gypsum from gypsum boards, are being increasingly employed as substitutes for primary raw …
Published in International Journal of Concrete Technology · Vol. 9, Issue 1, 2023 · pp. 26–34 Read article
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Compressive Strength and Chloride penetration on Semi-Lightweight Concrete Made Up of Artificial Aggregates
Abstract: This paper deals with the properties of semi-Light weight concrete prepared by using Light weight wood ash pellets as coarse aggregates. It can be prepared by varying the cement content from 300 to 450 kg/m3. Optimum design mix can be finalised by studying the engineering properties such as compressive strength, split tensile strength, young’s modulus and rapid chloride penetration test. Various trial mixes have been attempted in the laboratory by …
Published in International Journal of Concrete Technology · Vol. 9, Issue 2, 2023 · pp. 14–25 Read article
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Application of High-Speed Videography in Assessing the Performance of Blasts
Abstract: Abstract Blasting can be considered as the most crucial process in an opencast mine. It is therefore important for mining engineers to understand the effect of geological discontinuities and blast design parameters on the results of blasting. Bench height and burden are very important parameters affecting stiffness of bench. Joints alter the results of blasting, by making explosive energy utilization ineffective. Modern tools like high-speed videography reveal many aspects of …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 1, Issue 2, 2015 · pp. 32–46 Read article
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Tunnel Stability under Different Conditions: Analysis by Numerical and Empirical Modeling
Abstract: Abstract Stability of the tunnels under different geotechnical conditions can be effectively assessed using numerical modelling techniques. In this paper, the stability of tunnel was analyzed along with support requirement, based on stress distribution around tunnel, using the finite element modelling software – NISA. A case study was taken up of a tunnel proposed by Karnataka Netravari Nigam Limited near Siddapura, Udupi District, Karnataka, India. Results from finite element modeling …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 1, Issue 2, 2015 · pp. 1–13 Read article