Influence of silicone oil on durability of portland blast furnace slag cement mortar

Gota Kishimoto; Junho Kim; Hyeonggil Choi; Yukio Hama

doi:10.3151/jact.16.110

Influence of silicone oil on durability of portland blast furnace slag cement mortar

Gota Kishimoto, Junho Kim, Hyeonggil Choi, Yukio Hama

School of Architecture

Muroran Institute of Technology

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

In this study, the development of carbonation resistance in blast furnace slag (BFS) mortar when using silicone oil (SO) is investigated. Moreover, the influence of SO on drying shrinkage and frost resistance are investigated. The results indicate that SO tends to improve the carbonation resistance of BFS blended mortar and reduces drying shrinkage; however, it decreases frost resistance. The water repellency of SO has a positive effect on carbonation and drying shrinkage. Furthermore, there is a possibility that SO prevents the consumption of calcium hydroxide (CH) by carbonation and hydration in portland blast furnace slag cement type B (BB) samples. SO exists in the form of oil droplets in hardened cement pastes and inhibits the relaxation of water pressure at freezing. This is a probable cause for why SO decreases frost resistance.

Original language	English
Pages (from-to)	110-123
Number of pages	14
Journal	Journal of Advanced Concrete Technology
Volume	16
Issue number	2
DOIs	https://doi.org/10.3151/jact.16.110
State	Published - Feb 2018

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abstract = "In this study, the development of carbonation resistance in blast furnace slag (BFS) mortar when using silicone oil (SO) is investigated. Moreover, the influence of SO on drying shrinkage and frost resistance are investigated. The results indicate that SO tends to improve the carbonation resistance of BFS blended mortar and reduces drying shrinkage; however, it decreases frost resistance. The water repellency of SO has a positive effect on carbonation and drying shrinkage. Furthermore, there is a possibility that SO prevents the consumption of calcium hydroxide (CH) by carbonation and hydration in portland blast furnace slag cement type B (BB) samples. SO exists in the form of oil droplets in hardened cement pastes and inhibits the relaxation of water pressure at freezing. This is a probable cause for why SO decreases frost resistance.",

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Influence of silicone oil on durability of portland blast furnace slag cement mortar

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