Effect of Ordinary Portland Cement and Water Glass on the Properties of Alkali Activated Fly Ash Concrete

被引：7

作者：

Bocullo, Vytautas ^{[1
]}

Vaiciukyniene, Danute ^{[1
]}

Gecys, Ramunas ^{[1
]}

Dauksys, Mindaugas ^{[1
]}

机构：

[1] Kaunas Univ Technol, Fac Civil Engn & Architecture, Studentu G 48, LT-51367 Kaunas, Lithuania

来源：

MINERALS | 2020年 / 10卷 / 01期

关键词：

alkali-activated concrete; fly ash; durability; compressive strength; ordinary Portland cement; industrial waste; GEOPOLYMER CONCRETE; SILICA REACTION; SLAG; STRENGTH; OPC;

D O I：

10.3390/min10010040

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

This research presents the influence of ordinary Portland cement (OPC) and/or water glass addition on fly ash alkali-activated mortar and concrete. The results show that fly ash (FA) concrete activated with a NaOH solution and water glass mixture had better resistance to freeze and thaw, carbonation, alkali-silica reaction (ASR) and developed higher compressive strength and static elastic modulus compared with the FA concrete activated only with an NaOH solution. The addition of OPC contributes to the development of a denser microstructure of alkali activated concrete (AAC) samples. In the presence of water glass and OPC, the compressive strength (52.60 MPa) of the samples increased more than two times as compared with the reference sample (21.36 MPa) without OPC and water glass. The combination of OPC and water glass showed the increased strength and enhanced durability of AAC. The samples were more resistant to freeze and thaw, ASR, and carbonation.

引用

页数：10

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