High calcium fly ash geopolymer mortar containing Portland cement for use as repair material

被引：199

作者：

Phoo-ngernkham, Tanakorn ^{[1
]}

Sata, Vanchai ^{[2
]}

Hanjitsuwan, Sakonwan ^{[3
]}

Ridtirud, Charoenchai ^{[4
]}

Hatanaka, Shigemitsu ^{[5
]}

Chindaprasirt, Prinya ^{[2
]}

机构：

[1] Rajamangala Univ Technol Isan, Fac Engn & Architecture, Program Civil Engn, Res Ctr Adv Civil Engn & Construct Mat, Nakhon Ratchasima 30000, Thailand

[2] Khon Kaen Univ, Fac Engn, Dept Civil Engn, Sustainable Infrastruct Res & Dev Ctr, Khon Kaen 40002, Thailand

[3] Lampang Rajabhat Univ, Fac Ind Technol, Program Civil Technol, Lampang 52100, Thailand

[4] Rajamangala Univ Technol Isan, Fac Engn, Dept Civil Engn, Khon Kaen 40000, Thailand

[5] Mie Univ, Fac Engn, Dept Architecture, Tsu, Mie 5148504, Japan

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2015年 / 98卷

关键词：

Geopolymer; High calcium fly ash; Portland cement; Shear bond strength; Bending stress; Repair material; MECHANICAL-PROPERTIES; STRENGTH DEVELOPMENT; CONCRETE; OPC; PERFORMANCE; WATER;

D O I：

10.1016/j.conbuildmat.2015.08.139

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This article investigated the utilization of high calcium fly ash geopolymer mortars (GPM) containing ordinary Portland cement (PC) for use as Portland cement concrete (PCC) repair material. The shear bond strength of PCC substrate and repair binder and bending strength of notched concrete beam filled with repair binder were used to evaluate the performances of GPM and commercial repair binders (RM). Test results indicated that the use of GPM gave sufficiently high shear bond and bending strengths compared with the use of RM suggesting that it could be used as an alternative product for concrete repair works. In addition, the results from scanning electron microscopy of fracture surfaces indicated that the interface zone of concrete and GPM was more homogeneous and denser than that of concrete and RM. The GPM with 14 M NaOH solution and 10% PC was the optimum mixture for improving the shear bond and bending strengths. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：482 / 488

页数：7

共 29 条

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