Mechanical and microstructural properties of alkali-activated slag and slag plus fly ash mortars exposed to high temperature

被引：139

作者：

Celikten, Serhat ^{[1
]}

Saridemir, Mustafa ^{[2
]}

Deneme, Ibrahim Ozgur ^{[3
]}

机构：

[1] Eskisehir Tech Univ, Vocat Sch Transportat, TR-26470 Eskisehir, Turkey

[2] Nigde Omer Halisdemir Univ, Dept Civil Engn, TR-51240 Nigde, Turkey

[3] Aksaray Univ, Dept Civil Engn, TR-68100 Aksaray, Turkey

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 217卷

关键词：

Alkali-activated mortar; Mechanical properties; Microstructure; High temperature; Fly ash; Blast furnace slag; BLAST-FURNACE SLAG; HIGH-STRENGTH CONCRETE; ELEVATED-TEMPERATURE; GEOPOLYMER CONCRETE; DURABILITY PROPERTIES; AMBIENT-TEMPERATURE; SILICA FUME; PERFORMANCE; SHRINKAGE; BINDER;

D O I：

10.1016/j.conbuildmat.2019.05.055

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, changes in the mechanical and microstructural properties of alkali-activated blast furnace slag (BFS) and BFS + fly ash (FA) blended mortars exposed to 25, 400, 600 and 800 degrees C temperatures are investigated. The alkali-activated mortars using the replacement ratios of 0, 25 and 50% FA by weight of BFS together with the activators are produced in addition to the control mortars produced by only cement. Three different optimum Ms (SiO2/Na2O ratio of activators) values of 0.50, 0.75 and 1.00 are determined for the alkali-activated mortars. The FA substitution by BFS increases the high temperature resistance of alkali-activated BFS mortars. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：50 / 61

页数：12

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