Microstructural evolution of belite-rich cement mortar subjected to water, carbonation, and hybrid curing regime

被引：26

作者：

Sharma, Raju ^{[1
]}

Pei, Junjie ^{[1
]}

Jang, Jeong Gook ^{[1
]}

机构：

[1] Incheon Natl Univ, Urban Sci Inst, Div Architecture & Urban Design, 119 Acad Ro, Incheon 22012, South Korea

来源：

CEMENT & CONCRETE COMPOSITES | 2023年 / 139卷

基金：

新加坡国家研究基金会;

关键词：

Belite-rich cement; Carbonation curing; Hybrid curing regime; Physicochemical properties; C-S-H; ACCELERATED CARBONATION; PORTLAND-CEMENT; PORE STRUCTURE; PASTE; PERFORMANCE; HYDRATION; STRENGTH; SLAG; CONCRETE;

D O I：

10.1016/j.cemconcomp.2023.105028

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The present study investigates the influence of various curing schemes on the strength and microstructural evolution of belite-rich cement (BRC) mortar. The sets of BRC mortar were subjected to different carbonation and/or water curing for 28 days. The mineralogical changes in BRC depend upon the w/c ratio of the mix and CO2 concentration at the initial days of curing. Ettringite, portlandite, and unreacted belite were the hydrated phases at a 0.3 w/c ratio. Regardless of curing type, rapid mineralogical changes at higher w/c ratios through different polymorphs of CaCO3 and de-calcified silica gel were observed. The carbonation curing was efficient for higher strength development at all the w/c ratios (0.3-0.7). However, hybrid curing was more efficient than water curing at higher w/c ratios (0.6 and 0.7) in improving the compressive strength.

引用

页数：14

共 86 条

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