Durability of Geopolymer Lightweight Concrete Infilled LECA in Seawater Exposure

International Conference of Applied Science and Technology for Infrastructure Engineering

土木建筑工程;材料科学

Razak, R.A.^1,2 ; Abdullah, M.M.A.B.^1,2 ; Yahya, Z.^1,2 ; Hamid, M.S.A.^2

Center of Excellence Geopolymer and Green Technology, School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), P.O. Box 77, D/A Pejabat Pos Besar, Kangar, Perlis

01000, Malaysia^1

Faculty of Engineering Technology, Universiti Malaysia Perlis (UniMAP), Kampus Uniciti Alam, Padang Besar, Perlis, Malaysia^2

关键词: Alkaline activators;    Expanded clay aggregates;    Geopolymer;    Geopolymer concrete;    Ordinary Portland cement;    Seawater exposures;    Weight loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/267/1/012012/pdf
DOI  :  10.1088/1757-899X/267/1/012012

来源: IOP

【 摘 要 】

This paper describes a development of lightweight concrete using lightweight expanded clay aggregate (LECA) in fly ash (FA) based geopolymer immersed in seawater. The objective of this research is to compare the performance of geopolymer concrete (GPC) with ordinary Portland cement (OPC) concrete infilled lightweight expanded clay aggregate (LECA) in seawater exposure. Geopolymer concrete is produced by using alkaline activator to activate the raw material, FA. The highest compressive strength of this study is 42.0 MPa at 28 days and 49.8 MPa at 60 days. The density for this concrete is in the range of 1580 kg/m3to 1660 kg/m3. The result for water absorption is in the range of 6.82% to 14.72%. However, the test results of weight loss is in the range between 0.30% to 0.43%.