The relationship of NaOH Molarity, Na2SiO3/NaOH Ratio, Fly Ash/Alkaline Activator Ratio, and Curing Temperature to the Strength of Fly Ash-Based Geopolymer
Geopolymer, produced by the reaction of fly ash with an alkaline activator (mixture of Na2SiO3 and NaOH solutions), is an alternative to the use of ordinary Portland cement (OPC) in the construction industry. However, there are salient parameters that affecting the compressive strength of geopolymer. In this research, the effects of various NaOH molarities, Na2SiO3/NaOH ratios, fly ash/alkaline activator, and curing temperature to the strength of geopolymer paste fly ash were studied. Tests were carried out on 50 x 50 x 50 mm cube geopolymer specimens. Compression tests were conducted on the seventh day of testing for all samples. The test results revealed that a 12 M NaOH solution produced the highest compressive strength for the geopolymer. The combination mass ratios of fly ash/alkaline activator and Na2SiO3/NaOH of 2.0 and 2.5, respectively, produced the highest compressive strength after seven days. Geopolymer samples cured at 60 ℃ produced compressive strength as high as 70 MPa.
Geopolymer NaOH Molarity Fly Ash/Alkaline Activator Ratio Na2SiO3/NaOH Ratio Curing Temperature Compressive Strength
M.M.A. Abdullah H. Kamarudin H. Mohammed Khairul Nizar A. R.Rafiza Y. Zarina
Green Concrete UniMAP, School of Material Engineering,Universiti Malaysia Perlis (UniMAP),01000, P.O King Abdul Aziz City Science & Technology (KACST), P.O. Box 6086, Riyadh 11442, Kingdom of Saudi Ara School of Environmental Engineering,Universiti Malaysia Perlis (UniMAP), 01000, P.O. Box 77,D/A Peja
国际会议
2011 International Conference on Mechatronics and Materials Processing(2011年机电一体化与材料加工国际会议 ICMMP)
广州
英文
1475-1482
2011-11-18（万方平台首次上网日期，不代表论文的发表时间）