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Durability Aspects of Standard Concrete

M. Vijaya Sekhar Reddy1, I. V. Ramana Reddy 2, K. Madan Mohan Reddy 3, and C. M. Ravi Kumar 4
1. Department of Civil Engineering , Srikalahasteeswara Institute of Technology, Srikalahasti, Andhra Pradesh, India..
2. Department of Civil Engineering, Sri Venkateswara University College of Engineering, Tirupati, Andhra Pradesh, India..
3. Department of Civil Engineering, SKIT, Andhra Pradesh, India.
4. epartment of Civil Engineering, VTUBDTCE, Davanagere, Karnataka, India.

Abstract—In today's competitive environment it is becoming important to reduce the construction cost in one or other way. Nowadays OPC is widely used and it is the costly ingredient in the production of concrete. However many countries have severe shortage of cement although their requirements are vast. Pozzalonic materials are widely used in concrete and mortars for various reasons, particularly for reducing the amount of cement required for making concrete and mortar which lead to a reduction in construction cost. In the new millennium, concrete incorporating self-curing agents will represent a new trend in the concrete construction. Curing of concrete plays a major role in developing the concrete microstructure and pore structure, and hence improves its durability and performance. Due to the high alkalinity of concrete it has always been susceptible to acid attack. Hence, in this investigation an attempt was made in order to know the behavior of standard concrete of M40 grade specimens curing with acids such as HCL, Alkaline such as NaOH and sulphate solution MgSO 4 and Na 2 SO 4 . In the last decade the use of Supplementary Cementing Materials (SCMs) has become an integral part of high strength and high performance concrete mix design. The addition of SCM to concrete reduces the heat of hydration and extends the service life in structures by improving both long term durability and strength. Some of the commonly used SCMs are Flyash, Silica fume and Metakaoline. This paper presents results of the durability characteristic properties of M 40 grade of with and without SCMs.

Index Terms—Standard concrete, Acid attack, Alkaline attack, Supplementary Cementing Materials (SCMs), Durability

Cite: M. Vijaya Sekhar Reddy, I. V. Ramana Reddy, K. Madan Mohan Reddy, and C. M. Ravi Kumar, "Durability Aspects of Standard Concrete," International Journal of Structural and Civil Engineering Research, Vol. 2, No. 1, pp. 40-46, February 2013.