Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag

Na, Seunghyun; Zhang, Wenyan; Taniguchi, Madoka; Quy, Nguyen Xuan; Hama, Yukio

doi:10.3390/ma13112564

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Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag

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Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan

School of Material Science and Engineering, Henan Polytechnic University, Jiaozuo 454-000, China

Environmental Engineering Division, Northern Regional Building Research Institute, Hokkaido Research Organization, Asahikawa, Hokkaido 078-8801, Japan

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College of Environmental Technology, Graduate School of Engineering, Muroran Institute of Technology, Muroran 050-8585, Japan

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Department of Civil Engineering, Hanoi Architectural University, Hanoi 100000, Vietnam

Author to whom correspondence should be addressed.

Materials 2020, 13(11), 2564; https://doi.org/10.3390/ma13112564

Received: 7 May 2020 / Revised: 1 June 2020 / Accepted: 3 June 2020 / Published: 4 June 2020

(This article belongs to the Collection Concrete and Construction Materials)

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Abstract

This paper presents the results of an experimental investigation on the material properties and self-healing ability of a blended cement mortar incorporating blast furnace slag (BFS). The effect of different types and Blaine fineness of BFS on the material properties and self-healing was investigated. Thirteen cement mixtures with BFS of different types and degrees of Blaine fineness are tested to evaluate the mechanical properties, namely compressive strength, bending strength, freeze–thaw, and accelerated carbonation. The pore structure is examined by means of mercury intrusion porosimetry. Seven blended mortar mixtures incorporating BFS for cement are used to evaluate the mechanical properties after applying freeze–thaw cycles until the relative dynamic modulus of elasticity reached 60%. The experimental results reveal that incorporating BFS improves the mechanical properties and self-healing ability. In the investigation of self-healing, smaller particle and high replacement ratios of BFS contribute to increasing the relative dynamic modulus of elasticity and decreasing the carbonation coefficient in the mortar after re-water curing. Moreover, BFS’s larger particles and high replacement ratio are found to provide better self-healing ability. A regression equation is created to predict the relative dynamic modulus of elasticity in mortar considering the Blaine fineness, BFS replacement ratio, and curing conditions. View Full-Text

Keywords: frost resistance; self-healing ability; blast furnace slag; freeze–thaw cycles; relative dynamic modulus of elasticity; carbonation coefficient

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MDPI and ACS Style

Na, S.; Zhang, W.; Taniguchi, M.; Quy, N.X.; Hama, Y. Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag. Materials 2020, 13, 2564. https://doi.org/10.3390/ma13112564

AMA Style

Na S, Zhang W, Taniguchi M, Quy NX, Hama Y. Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag. Materials. 2020; 13(11):2564. https://doi.org/10.3390/ma13112564

Chicago/Turabian Style

Na, Seunghyun, Wenyan Zhang, Madoka Taniguchi, Nguyen X. Quy, and Yukio Hama. 2020. "Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag" Materials 13, no. 11: 2564. https://doi.org/10.3390/ma13112564

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Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag

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