The role of dissolved rice husk ash in the development of binary blast furnace slag-sewage sludge ash alkali-activated mortars

被引：9

作者：

Istuque, Danilo Bordan ^{[1
]}

Paya, Jordi ^{[2
]}

Soriano, Lourdes ^{[2
]}

Victoria Borrachero, Maria ^{[2
]}

Monzo, Jose ^{[2
]}

Tashima, Mauro Mitsuuchi ^{[1
]}

机构：

[1] Univ Estadual Paulista, Fac Engn Ilha Solteira, UNESP, MAC Grp Pesquisa Mat Alternat Construcao, Ilha Solteira, SP, Brazil

[2] Univ Politecn Valencia UPV, ICITECH Inst Ciencia & Tecnol Hormigon, Valencia, Spain

来源：

JOURNAL OF BUILDING ENGINEERING | 2022年 / 52卷

关键词：

Alkaline activation; Rice husk ash; Sodium silicate suspensions; Sewage sludge ash; Blast furnace slag; Microstructure; COMPRESSIVE STRENGTH; SODIUM-SILICATE; FLY-ASH; GEOPOLYMER; CEMENT; BINDERS; MICROSTRUCTURE; SSA; HYDRATION; CONCRETE;

D O I：

10.1016/j.jobe.2022.104472

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study evaluated the compressive strength performance and microstructure of binary blast furnace slag-sewage sludge ash (BFS-SSA) alkali-activated mortars, in which rice husk ash (RHA) was dissolved in NaOH solution to replace commercial sodium silicate. The dissolution of RHA, performed in a thermal bottle with NaOH solution, enhanced the compressive strength of the alkali-activated mortars based on BFS up to 4.5-fold. BFS-SSA based mortars (10-40% SSA), activated with NaOH/RHA-based sodium silicate suspensions, reached a compressive strength up to 30 MPa after 28 curing days at 20 degrees C. The RHA dissolution enhanced the strength and sustainability of the BFS-SSA alkali-activated mortars.

引用

页数：14

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