Title: Long-term performance of concrete using additives

Authors: Kiran Devi; Babita Saini; Paratibha Aggarwal

Addresses: Civil Engineering Department, National Institute of Technology, Kurukshetra, Haryana, 136119, India ' Civil Engineering Department, National Institute of Technology, Kurukshetra, Haryana, 136119, India ' Civil Engineering Department, National Institute of Technology, Kurukshetra, Haryana, 136119, India

Abstract: The increase in global warming due to emission of greenhouse gases especially during the production of cement has become threat to the environment. The development of sustainable and economical materials has become need of the present scenario. Also, direct disposal of waste from stone industries is becoming serious issue to ecosystem and need its safe disposal. Accelerators are being used to accelerate stiffening and early age strength development of mortar/concrete. In this study, Kota stone powder (KSP) as partial substitution to cement and admixtures, i.e., calcium nitrate, triethanolamine as additives were used individually and in combination to examine their influence on strength, durability and micro-structural properties at later age. The aim of study was to check the viability of these materials in concrete under different environmental conditions; and to make sustainable concrete by reducing cement and cost. Admixtures and stone powder individually improved the properties; while, their mixture diminished concrete properties.

Keywords: calcium nitrate; triethanolamine; Kota stone powder; mechanical strength; electrical resistivity; chemical resistance; correlation; micro-structural analysis; economic analysis.

DOI: 10.1504/IJMMP.2020.104612

International Journal of Microstructure and Materials Properties, 2020 Vol.15 No.1, pp.58 - 85

Received: 02 May 2019
Accepted: 03 Dec 2019
Published online: 23 Jan 2020 *

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