Using the Taguchi method to optimize the compressive strength of geopolymer mortars

被引:1
作者
My Ngoc-Tra Lam [1 ]
机构
[1] Ho Chi Minh City Open Univ, Fac Civil Engn, Ho Chi Minh, Vietnam
来源
INTERNATIONAL JOURNAL OF ADVANCED AND APPLIED SCIENCES | 2020年 / 7卷 / 08期
关键词
Analysis of variance; Compressive strength; Geopolymer mortar; Taguchi method; Signal to noise ratio; FLY-ASH GEOPOLYMER; MECHANICAL-PROPERTIES; CONCRETE; OPC; CEMENT; REPLACEMENT;
D O I
10.21833/ijaas.2020.08.001
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
This paper presents the use of the Taguchi method to optimize the compressive strength of geopolymer mortars. The geopolymer was produced from fly ash as a prime material and ordinary Portland cement (OPC) as additive. Fly ash was partially replaced with OPC in the geopolymer mixtures to enhance the compressive strength. The dosage of OPC, the concentration of sodium hydroxide solution (SH), and the curing temperature were considered as the influencing factors on the compressive strength of geopolymer mortars. Three levels of each factor were chosen to carry out this research. As a result, the orthogonal array L9 of the Taguchi method was used to design the experiments. The results of the experiments were analyzed by the signal to ratio (SNR) and the analysis of variance (ANOVA). This analysis has revealed that the least significant factor in terms of strength contribution is the dosage of OPC content, whereas the curing temperature is the most important factor in terms of strength contribution. This research shows that the optimized value of 7-day compressive strength was obtained in the mixture containing 20% of OPC that was prepared by SH of 12 M concentration and cured at 100oC. In addition, the geopolymer mortar produced by 30% of OPC and SH of 12 M concentration and cured at 100oC gained the maximum compressive strength at 28-day age. (C) 2020 The Authors. Published by IASE.
引用
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页码:1 / 10
页数:10
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