Bond strength between blended slag and Class F fly ash geopolymer concrete with steel reinforcement

被引：229

作者：

Castel, Arnaud ^{[1
]}

Foster, Stephen J. ^{[1
]}

机构：

[1] UNSW Australia, Sch Civil & Environm Engn, Ctr Infrastruct Engn & Safety, Sydney, NSW 2052, Australia

来源：

CEMENT AND CONCRETE RESEARCH | 2015年 / 72卷

关键词：

Sustainability; Geopolymer concrete; Fly ash; Bond strength; Heat curing; ENGINEERING PROPERTIES; CEMENT; PERFORMANCE; EMISSIONS; BARS;

D O I：

10.1016/j.cemconres.2015.02.016

中图分类号：

TU [建筑科学];

学科分类号：

081407 [建筑环境与能源工程];

摘要：

In this paper, geopolymer concrete bond with both deformed and smooth reinforcing steel bars is investigated using the standard RILEM pull-out test. The geopolymer binder is composed of 85.2% of low calcium fly ash and 14.8% of ground granulated blast furnace slag (GGBFS). The tests were aimed to assess the development of the bond strength from 24 h to 28 days after casting, with different heat curing conditions. The results show that 48 h of heat curing at 80 degrees C is required in order to obtain similar or better performances to those of the reference 45 MPa OPC concrete. The 28-day bond strength and the overall bond stress-slip behaviour of the geopolymer concrete were similar to those previously reported for OPC-based concretes. Providing intensive heat curing, high early bond strength can be achieved showing that Class F fly ash geopolymer concrete is well suited for precast applications. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：48 / 53

页数：6

共 23 条

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Effect of surface pre-conditioning on bond of carbon fibre reinforced polymer rods to concrete [J].