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1334 articles for “Rats”
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Abrasion resistance, compressive strength and elasticity modulus of recycled aggregate concrete (RAC) included lower quality recycled aggregate with and without silica fume
Abstract: The usage of recycled aggregate (RA) for concrete works is spreading for gaining wide acceptance around the world, and total amount of RA utilized in concrete industry increases day-by-day. RA is used in many concrete products, such as concrete interlocking blocks, pavements, etc. One of the physical causes of concrete deterioration is surface wear or loss of mass for concrete products which are especially exposed to vehicular traffic (i.e., industrial …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 1–18 Read article
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Prediction of Compressive Strength of Concrete with Decision Trees
Abstract: In the past few researchers predicted the compressive strength of concrete from its ingredients employing data driven technique like artificial neural network (ANN) and Decision Tree (DT). For Indian concrete records, only one study was available which had employed ANN for prediction. Evaluation of different performance metrics indicated that there was scope of improvement in the prediction performance. In this paper experimental data from the literature was utilized for development …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 19–29 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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Utilization of Waste Plastics as a Fiber in Concrete
Abstract: The rapid urbanization and industrialization all over the world has resulted in large deposition of plastic waste. Disposal of plastic waste in an environment is considered to be big hazard due to its very low biodegradability and presence in large quantities. In order to minimize the problem, the proposed concrete which is made by adding plastics in concrete may help to reuse the plastics and to study the properties of …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 56–60 Read article
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Analysis of Gravity Dam for Different Rectangular Openings Sizes
Abstract: Gravity dams are very important structures. Different parameters which come in loading combination are temperature, dead weight, earthquake, hydrostatic pressure and water load. From the study, it has been found that the properties which affect the performance of a dam are static properties and thermal properties. Static properties of the concrete dam are strength, Poisson’s ratio and elastic modulus while thermal properties are specific heat, thermal expansion coefficient, thermal conductivity …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 11–17 Read article
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Modulus of Elasticity of Steel Fiber Reinforced Concrete with Metakaolin
Abstract: In this paper the attempt has been made to study the results of an experimental investigation using steel fiber (SF) and metakaolin (MK) on the properties of structural concrete. Crimped steel fibers of aspect ratio 85 and MK were used in this investigation. The effects of these fiber and MK on workability, density, and on various strengths of M60 grade concrete are studied. Fiber content varies from 2.5% to 10% …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 50–59 Read article
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Empirical Model Relativity of Flexural and Compressive Strength of Concrete Produced with Foundry Waste Sand as Partial Replacement
Abstract: The evaluation presented in this research is to establish the correlation between compressive strength of concrete and flexural strength of concrete of grade 20 at mix ratio of 1:2:4 produced using foundry waste sand as a partial replacement for river sand at different replacement level of 0%, 5%, 10%, 15%, 20% and 25%. The aimed compressive strength was achieved at 15% replacement and the corresponding flexural strength of 3.14 N/mm2was …
Published in International Journal of Concrete Technology · Vol. 4, Issue 1, 2018 · pp. 5–10 Read article
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Investigation of strength of concrete by replacement of sand with copper slag and cement with sugarcane bagasse ash
Abstract: This investigational study conducted to observe the potential of Sugarcane Bagasse Ash as a cement replacing material which is similar to that of Portland Pozzolana Cement and Copper slag as a fine aggregate replacement material. Seven different concrete mixes with the Bagasse Ash replacement to the Portland Pozzolana cement and copper slag replacement are (5% + 40%, 10% + 15% , 10% + 25% , 10% + 35% , 10% …
Published in International Journal of Concrete Technology · Vol. 5, Issue 1, 2019 · pp. 25–38 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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A Study on Self Compacting Concrete using Portland Pozzolana Cement
Abstract: Self-compacting concrete (SCC) is a type of highly flowable concrete that fills each and every corner of congested formwork without the need for mechanical vibration as it is placed by means of its own weight. Generally, the SCC is prepared by using Ordinary Portland Cement (OPC) with mineral and chemical admixtures. Portland Pozzolana Cement (PPC) itself contains some amount of fly ash, thus given the motivation to prepare the SCC …
Published in International Journal of Concrete Technology · Vol. 6, Issue 2, 2020 · pp. 1–9 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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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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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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Review on segregation resistance of self compacting concrete
Abstract: In order to produce thin precast elements, a self-compacting concrete was prepared. While assembling these components, homogenously scattered steel strands rather than normal steel-building up network were added to the substantial combination at a dose of 10% by mass of concrete. A sufficient substantial strength class was accomplished with a water to solidify proportion of 0.40..Extensive test programs of SCC with differences in water – binder proportions, glue volumes, mixes …
Published in International Journal of Concrete Technology · Vol. 8, Issue 1, 2022 · pp. 17–20 Read article
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Evaluation of Soil Reinforcement Potential of Grass Variety
Abstract: Reinforcement potential of plant root is studied by many researches across the globe. This work aims to analyze the effect of grass root in the improvement of engineering properties of soil. Plant roots being a natural material help in enhancing the shear strength of soil. Field and laboratory studies were conducted on a grass variety (Co-4) and the soil reinforcement potential of the plant is studied. It is found that …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 1, Issue 1, 2015 · pp. 14–18 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
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Soil Stabilization with Waste Shredded Rubber Tyre Chips
Abstract: Soil stabilization means modification of the soil properties by the addition of any other material to meet the required engineering requirements. Construction engineering structures on the weak soils are considered to be unsafe. The load bearing capacity of these weak soils can be improved by means of various ground improvement techniques. Use of waste shredded rubber tyre chips in geotechnical engineering for enhancing the soil properties has received great attention …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 3, Issue 1, 2017 · pp. 1–7 Read article
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Prediction and Assessment of Lateral Displacement of Rock Mass Along the Length of the Horseshoe Cavern – A Numerical Modelling Approach
Abstract: The stability of the underground structures is a key to successful underground mining. Caverns are large underground openings constructed in rock mass for a variety of purposes. The properties of intact rock mass are generally overshadowed by the properties of discontinuities, if the discontinuities are present. Mechanisms of deformation and failure of underground openings in jointed rock mass are determined by the characteristics of the geometrical distribution of discontinuities. This …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 3, Issue 1, 2017 · pp. 17–28 Read article
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A New Model for Prediction of Wellbore Stability Using the Three Dimensional Hoek–Brown Failure Criterion
Abstract: Wellbore stability is one of the crucial issues in oil and gas industries. The issues related to instability of wells, impose significant unwanted costs on drilling operation.The objective of this paper is to present the 3D-wellbore stability prediction models for vertical wellbores. The three dimensional Hoek–Brown strength criterion developed by Zhang and Zhu conjunction with linear poroelastic constitutive model is utilized to develop the models. This models leads to easily …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 3, Issue 2, 2017 · pp. 10–15 Read article
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A REVIEW ON THE VARIOUS TYPES OF SOIL CONTAMINATION WITH REMEDIATION
Abstract: The paper deals about the plethora of soil contamination by the industrial activities or accidental leakage. Several contaminations of soils have been included in the paper and suggested remediation methods for the remediation of contaminated soil is also discussed in the paper. Rise of population growth leads to large amount of demand, which affects the industrial growth. The re use of waste or any other surplus additives and bio-surfactants for …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 4, Issue 2, 2018 · pp. 30–37 Read article