Durability of Low Calcium Fly Ash Geopolymer Concrete in Chloride Solution

摘要：

This paper describes a durability study of low-calcium fly ash geopolymer concrete under an accelerated wetting-drying testing. The main parameters were aggregate content, alkaline/fly ash ratio, ratio of sodium silicate/sodium hydroxide and curing conditions. The accelerated test method was carried out by subjecting the geopolymer concrete to repeated cycles of chloride solution immersion and oven drying. The specimens were immersed in 6.54％ chloride solution for 24 hours and were heated at 80℃ for 24 hours. Physical properties, such as a change in mass and compressive strength, were monitored. The results indicate that the geopolymer concrete has a good resistance in accelerated wetting drying cycles. The compressive strength of the exposed concrete increased about 16％～33％ after the wet-dry cycle.

关键词： accelerated wetting-drying chloride solutions fly ash geopolymer concrete strength

作者: Monita Olivia Hamid Nikraz

作者单位: Department of Civil Engineering, Curtin University of Technology, GPO BOX U 1987, Perth, Western Australia, 6845, Australia

会议类型: 国际会议

会议名称: 6th Asian Symposium on Polymers in Concrete(第六届亚洲聚合物混凝土国际会议)

会议地点: 上海

会议语种:英文

页码: 153-161

在线出版日期: 2009-10-29（万方平台首次上网日期，不代表论文的发表时间）