Study on the Effect of Supplementary Cementing Materials on the Durability Properties of M70 Grade High-performance Concrete with Superplasticizer

M. Vijaya Sekhar Reddy, M. C. Nataraja, N. Krishna Murthy, K. Chandra Sekhar Reddy

DOI:

Volume , Issue 2 | Pages: 92-96

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Abstract

High-performance concrete (HPC) has become an object of intensive research due to its growing use in the
construction practice. In the last decade, the use of supplementary cementing materials (SCMs) has become
an integral part of the high strength and HPC mix design. The addition of SCMs to concrete reduces the heat
of hydration and extends the service life in structures by improving both long-term durability and strength.
The concrete durability crisis which started to attract public attention forced the engineers to think about the
performance of concrete. Proper mix design and careful construction using the best available materials and
technologies are necessary to achieve quality concrete structures. In this investigation, the SCMs used are fly ash,
silica fume, and metakaolin, which are recommended by IS: 456-2000 to enhance the durability of concrete. This
study discusses the role of supplementing cementing materials as partial replacement for cement in concrete in
reducing greenhouse gas emissions. In this investigation, an attempt was made to study the behavior of HPC of
M70 grade specimens curing with acids such as hydrochloric acid, alkaline solution such as NaOH and sulfate
solution MgSO4 and Na2SO4. The durability properties were evaluated by conducting acid attack test, alkaline
attack test, and sulfate attack tests. One of the important changes is the introduction of micro technology for
concrete with ultrafine and various other micro sized and fine cementitious materials. It is now possible to achieve
excellent particle packing and thereby comply with the demands for performance in concrete both in fresh and in
the hardened state.

Keywords
High-performance concrete Durability Acid attack test Alkaline attack test Sulfate attack test.
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Citation

M. Vijaya Sekhar Reddy, M. C. Nataraja, N. Krishna Murthy, K. Chandra Sekhar Reddy. Study on the Effect of Supplementary Cementing Materials on the Durability Properties of M70 Grade High-performance Concrete with Superplasticizer. Indian J. Adv. Chem. Sci. -0001; (2):92-96.