The combined use of silica fume having pozzolanic reaction and filler effect, and super-plasticizer will improve the interface of the materials, thereby enhancing the strength of the concrete, can lead to

Accurately calculating and predicting the pressure that poured concrete will exert on the formwork, is one of the most important tasks when planning on-site concrete works. Sure knowledge of the expected

The rate of carbonation depends on porosity (for CO2to Diffuse) & moisture content of the concrete (for dissolution of solid Ca(OH)2). The diffusivity of CO2 depends upon the pore system of hardened

Prestressed concrete is a method for overcoming concrete's natural weakness in tension. Prestressing tendons (generally of high tensile steel cable or rods) are used which produces a compressive stress

This article presents a comparison between conventional concrete and mineral admixed concrete to be used in the construction of cement concrete pavements. Mineral admixtures such as flyash

Concrete contaminated substrates cause immense problems to the user over the years. Contaminationdue to fuels, oils, fats, grease, sugar are a combination of both organic and hydrocarbon based

Flyash is one of the promising pozzolanic materials that can be blended with Portland cement for the production of durable concrete and at the same time it is a value added product. Addition of flyash to Portland cement not only improves the strength of concrete, but also forms a calcium silicate hydrate (CSH) gel around the cement particles which is highly

In recent years, several studies have been conducted to investigate the flexural strengthening of reinforced concrete (RC) members with fiber reinforced composite fabrics. Shear failure of RC members is disastrous and occurs with

Concrete is perhaps the most important construction material due to its various added advantages. The major problem with concrete is that it is very weak in tension. To strengthen the concrete to withstand tensile stresses, reinforced

Extensive research work for decades is in progress throughout the globe in concrete technology in finding alternative materials which can partially or fully replace ordinary Portland cement (OPC) and

It has been estimated that several million tones of waste glasses are generated annually worldwide. The key sources of waste glasses are waste containers, window glasses, window screen, medicinal

Concrete structures need repair and rehabilitation many a time as they get damaged due to excessive stresses due to unforeseen forces caused by man-made or natural disasters. But there are few situations in practice, where concrete is

The compressive strength of four cements (Three PPC and one OPC) was determined according to different international standard, BIS, BS, ASTM and Sri Lanka. The 28 days strength of one PPC is 53 MPa, the other two shows 48MPa when tested as per BIS. The 43 grade OPC also shows 50 MPa at 28 days. However, when tested as per BS & ASTM methods

Comparative behavior of Prestressed concrete (PSC) beams subjected to two point loadings in terms of failure load, deflection and failure modes is evaluated. Effect of Glass Fiber Reinforced Polymer (GFRP)

Concrete mixtures having high workability and high cohesiveness will be self–compacting concrete. The self–compacting concrete (SCC) is defined as a flowing concrete that can be transported without any segregation and placed

One of the most important performance criteria for concrete is the fluidity at fresh state. Appropriate fresh state properties are achieved by engineering suitably the theology of concrete. Such engineering is achieved by

The development of high performance concrete is a giant step in making concrete a high-tech material with enhanced characteristics and durability. High performance concrete is an engineered concrete obtained through a careful

Concrete is a material often used in the construction of highrise buildings. In case of unexpected fire, the concrete elements such as columns, beams, etc. will be subjected to extreme temperatures and needs assessment of their