Use of Recycled Aggregate as Alkali Activator to Enhance Strength Development in High-Volume Blast-Furnace Slag Concrete

被引：8

作者：

Han, Dongyeop ^{[1
]}

Kim, Jun-Ho ^{[2
]}

Han, Mincheol ^{[3
]}

Yi, Seong-Tae ^{[4
]}

机构：

[1] Gyeongsang Natl Univ, Dept Architectural Engn, Jinju 52828, South Korea

[2] Oyama Coll, Natl Inst Technol, Dept Architecture, Oyama 3230806, Japan

[3] Cheongju Univ, Dept Architectural Engn, Cheongju 28503, South Korea

[4] Inha Tech Coll, Dept Civil & Environm Engn, Incheon 22212, South Korea

来源：

KSCE JOURNAL OF CIVIL ENGINEERING | 2020年 / 24卷 / 03期

关键词：

High-volume blast-furnace slag; Recycled aggregate; Alkali activation; Compressive strength; Concrete; COMPRESSIVE STRENGTH; REACTION MODELS; HYDRATION; MICROSTRUCTURE; CARBONATION;

D O I：

10.1007/s12205-020-1329-y

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The aim of the research is to achieve the strength development performance of high-volume slag concrete or zero-cement concrete with 0.45 of W/B by incorporating of recycled aggregates as a cost-effective alkali activator. Based on the blast-furnace slag (BFS) based cement, like an alkali activated slag (AAS), recycled aggregates were replaced by natural aggregates and were used as an alkali activator for BFS. For compressive strength improvement in concrete, different replacement ratios of ordinary Portland cement ranged from zero to 50%, recycled fine aggregates (RFA) and recycled coarse aggregates (RCA) ranged from zero to 100% were varied. The test results indicated that recycled aggregates could be used as an alkali activator for BFS, and they were also able to help achieve about 90% of compressive strength of the concrete with natural aggregate depending on its optimum proportion with BFS.

引用

页码：902 / 912

页数：11

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