Potential utilization of sugarcane bagasse ash for developing alkali-activated materials

被引：8
作者：
Le, Duc-Hien [1 ]
Sheen, Yeong-Nain [2 ]
Lam, My Ngoc-Tra [3 ]
机构：
[1] Ton Duc Thang Univ, Fac Civil Engn, Sustainable Dev Civil Engn Res Grp, Ho Chi Minh City, Vietnam
[2] Natl Kaohsiung Univ Sci & Technol, Dept Civil Engn, Kaohsiung, Taiwan
[3] Ho Chi Minh City Open Univ, Dept Civil Engn, Ho Chi Minh City, Vietnam
来源：
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS | 2022年 / 11卷 / 03期
关键词：
Alkali-activated material; sugarcane bagasse ash; workability; compressive strength; sulfate resistance; BLAST-FURNACE SLAG; CANE STRAW ASH; DRYING SHRINKAGE; FLY-ASH; SULFATE ATTACK; CONCRETE; DURABILITY; PERFORMANCE; BINDERS; MICROSTRUCTURE;
D O I：
10.1080/21650373.2021.1920513
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Sugarcane bagasse ash (SBA) is a by-product generated from cogenerations in sugar industries. This study is aimed at investigating on performance of alkali-activated binder using SBA and ground blast furnace slag (GBFS). The proposed mixtures were developed by changing GBFS/SBA ratios in blends (i.e. 100/0, 90/10, 80/20, 70/30, and 60/40) and silicate moduli (M-s = 0.6, 0.8, 1.2). Several results are highlighted: (1) alkali-activated GBFS/SBA pastes perform a quick hardening with an increase in M-s; (2) testing specimens cured in room-air ambient have the 28-day compressive strength beyond 110 MPa; and the 90/10 one shows the highest mechanical strength and manifested the best sulfate resistance and the lowest water absorption; (3) magnitude of drying shrinkage is smallest for 80/20 sample and following by the 90/10 sample. In summary, with balance of fresh behavior, strength, and shrinkage, a substitution up to 20% SBA could be appropriate to manufacture a sustainable binder.
引用
收藏
页码：199 / 209
页数：11
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