All articles
120 articles
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Performance of Metakaolin and GGBS-induced Geopolymer Concrete Under Compression
Abstract: Metakaolin and ground granulated blast furnace slag (GGBS) were used as the source materials to obtain the high strength geopolymer concrete. NaOH and sodium silicate were used as alkaline activators with varying NaOH molarities of 8M, 12M, 14M and 16M. Cubes of size (100x100x100) mm were cast and the four geopolymer mixes were heat cured for varying durations of 24 hours, 48 hours and 72 hours and tested for compressive …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 31–38 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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Improving Durability of Asphalt Pavement Wearing Course Submerged in Water Using Candle Wax as Water Proofing Agent: An Assessment Using RSI, FDI and SDI
Abstract: Asphalt pavements are designed and constructed to meet mostly stability and durability requirements during its design life. However, durability of asphalt pavements also heavily depends on other physical parameters as good drainage facility apart from having good material mix and structural designs. In the wake of asphalt pavements not supported by good drainage measures it is very likely that these pavements will fail sooner than later. On this basis, the …
Published in International Journal of Concrete Technology · Vol. 3, Issue 2, 2017 · pp. 1–10 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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A Review on Experimental Investigation of Fibre Reinforced Metakaolin-Based Geopolymer Concrete
Abstract: The development of new binders, as an alternative to Portland cement (PC), by alkaline activation, is a current researcher’s interest. As Concrete is the most commonly used material for construction. The worldwide production of cement has greatly increased after 1990. Production of cement results in a lot of environmental pollution as it involves the emission of CO2 gas. There are many ways to which we can reduce environmental pollution (carbon …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 44–55 Read article
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Effect of Elevated Temperature on Compressive Strength and Flexural Strength of Fiber Reinforced Concrete
Abstract: Now a day concrete is being used extensively in the construction that might be subjected to elevated temperatures. The behavior of concrete structures at elevated temperatures is significant importance in predicting the safety of structures in response to certain accidents or particular service conditions. This paper deals with the mechanical properties of concrete with steel fibers subjected to temperatures up to 500°C. The specimens were kept in oven for 1 …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 19–32 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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Experimental Study on the Properties of Self-Curing Concrete
Abstract: This paper highlights the effect of curing agent polyethylene glycol (PEG-400) in the performance of concrete. The chemical agent PEG is used with different percentage; 1%, 2% and 3% to the weight of cement. Super plasticizer named glenium was used to improve the workability of concrete. The property such as compressive strength and split tensile strength of concrete was examined with normal curing and self-curing at 7 days and 28 …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 8–13 Read article
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Susceptibility Behaviour of Asphalt Concretes Under Varying Mix Temperature Conditions: Study on Stability and Flow
Abstract: Understanding the behaviour of flexible pavements synonymous with asphalt concretes is one that can be complex due to the make-up of the pavement (asphalt concrete) and the external factors that impedes its performance from production stage to service life. The present study had considered one of the most damaging factors to asphalt concrete – mix temperature; and its effect on some of the mix design properties of asphalt concrete that …
Published in International Journal of Concrete Technology · Vol. 3, Issue 1, 2017 · pp. 1–7 Read article
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Advantage of Microsilica in Concrete Compressive Strength
Abstract: Abstract Microsilica is an undefined sort of silica tidy for the most part gathered in sack house channels as by-result of the silicon and ferro-silicon generation. The paper condenses essential physical and synthetic properties of miniaturized scale silica and utilizes those outcomes for an assessment of small scale silica from a Health Safety and Environment (HSE) point of view. Small scale silica comprises of circular particles with a normal molecule …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 37–43 Read article
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Tensile Strain Reduction in Asphalt Concrete Mixtures through Rubberization at the Asphalt Bound – Subgrade Layer Interface
Abstract: Tensile strains are major contributors in determining the fatigue life of asphalt concrete pavement because they are responsible for fatigue cracking. Therefore, knowledge of strains and their role is of vital importance to the Highway Engineer. However, the focus of the present study was to investigate measures by which these damage contributing factor – “tensile strain” could be reduced at the interface of the asphalt concrete – subgrade layer. The …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 44–53 Read article
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Re-Characterization of Strength Properties of Asphalt Concrete Mixtures Using Non Bituminous Modifier – Candle Wax
Abstract: Improving the performance of asphalt concrete mixtures synonymous with flexible pavement has been a major concern in highway engineering. However, design of flexible pavement begins with proper material characterization to ensure that designs are appropriate. It is also pertinent to say that sometimes if not most times the properties of the individual materials that make up the pavement structure falls short of desired expectations. This has led to exploring techniques …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 30–36 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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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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Influence of Type and Size of Fine Aggregate on Glass Fiber Reinforced Self-Compacting Mortars (GFRSCM)
Abstract: Abstract This paper addresses the fresh and hardened state behavior of glass fiber reinforced self-compacting mortars (GFSCMs) with various types and sizes of fine aggregate. Mini-slump flow and mini V-funnel tests were performed to evaluate the workability of GFSCMs. Compressive strength, split tensile strength, and flexural strength tests at the end of 28 days of water curing were determined. Water sorptivity tests were conducted on 28-day cured cube specimens. The …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 63–71 Read article
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A Review- State of Art on Hot Weather Concreting and Rheology of Cement-Based Materials
Abstract: The objective of this paper is to explore the important mechanisms that control the rheology of cement based materials under hot weather conditions. The effect of hot weather on the fresh and mechanical properties of concrete was investigated. The paper presents some of the practices taken to alleviate the effects of hot weather on concreting. The rheological properties of Portland cement paste and concrete were discussed using both the conventional …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 49–62 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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Review on the Performance of Fibre and Industrial Slag in Concrete
Abstract: This review paper discusses about the different types of fibre used in concrete at different periods with the mix parameter details. This review enlightens the effect of industrial waste such as Bottom ash, Copper slag, Ferro-chromium slag, Ground granulated blast furnace slag (GGBFS), Steel slag, Stainless steel slag as a substitute in concrete. The elaborate study on its chemical composition and also the merits and demerits of using the slag …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 16–30 Read article
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A Review on the Use of Nano-Silica in Cementitious Compositions
Abstract: With the advent of nanotechnology, the material properties of the concrete industry, allows engineers and architects to use various materials in structural applications that were once impossible. Nowadays, the researchers are mainly focusing on the basic technology of cementitious material at nano/atomic level. The researchers are continuing to improve the durability and sustainability of concrete and have realised significant enhancement in mechanical properties of nano-silica incorporated cementitious materials. This review …
Published in International Journal of Concrete Technology · Vol. 1, Issue 1, 2015 · pp. 1–15 Read article