Statistical analysis of sustainable geopolymer concrete

粉煤灰 抗压强度 聚合物 固化(化学) 材料科学 氢氧化钠 地聚合物水泥 氢氧化钙 硅酸盐水泥 水泥 低钙 摩尔浓度 复合材料 冶金 化学工程 化学 工程类 有机化学
作者
Y.S.N. Kishore,Sai Geeta Devi Nadimpalli,Ashish Kumar Potnuru,Jayaprakash Vemuri,M.A. Khan
出处
期刊:Materials Today: Proceedings [Elsevier]
卷期号:61: 212-223 被引量:10
标识
DOI:10.1016/j.matpr.2021.08.129
摘要

Geopolymer concrete is an environment-friendly material and is presently accepted as an alternative to conventional concrete. It utilizes industrial by-products like fly ash and slag to reduce CO2 emissions associated with cement production. Due to the variability of fly ash composition and concrete casting conditions, significant variability is observed in the performance of the concrete produced with such materials. In this study, a non-linear regression technique is used to develop predictive models for the compressive strength of high and low calcium fly ash geopolymer concrete. The criteria such as root mean squared error (RMSE), the statistical significance of model coefficients, and the R-squared values were adopted. The developed models were validated using plots comparing the experimental and predicted response and plots showing residuals. The dependency of the compressive strength on the significant parameters were highlighted using contour and adjusted response plots. From the contour plots, it was observed that, for geopolymer concrete sourced from the high calcium fly ash, compressive strength increases with the molarity of sodium hydroxide, the activator-to-binder ratio, and the curing temperature; while it decreases with the increase in coarse aggregate content. Similar contour plots, for the case of geopolymer concrete sourced from low calcium fly ash, exhibited improvement in compressive strength increases with the molarity of sodium hydroxide, the activator-to-binder ratio, and the ratio of Na2SiO3 –NaOH solutions; at the same time, it decreases with the increase in water-to-geopolymer solids ratio. For low calcium fly ash geopolymer concrete, the proposed model predicts that compressive strength of 90 MPa could be obtained for fly ash with oxide composition comprising a silica-to-alumina ratio of 4. The regression models developed in the present study will be helpful to develop a design mix for geopolymer concrete comprising either high calcium fly ash or low calcium fly ash.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
与共发布了新的文献求助10
1秒前
carly完成签到 ,获得积分10
2秒前
颢懿完成签到 ,获得积分10
5秒前
量子星尘发布了新的文献求助10
6秒前
8秒前
ljc完成签到 ,获得积分10
9秒前
Java完成签到,获得积分10
13秒前
15秒前
鲤鱼安青完成签到 ,获得积分10
17秒前
17秒前
dollarpuff完成签到 ,获得积分10
20秒前
20秒前
mmmmmMM完成签到,获得积分10
27秒前
luckweb完成签到,获得积分10
33秒前
猫的毛完成签到 ,获得积分10
34秒前
nicky完成签到 ,获得积分10
35秒前
麦子完成签到 ,获得积分10
36秒前
36秒前
Wilson完成签到 ,获得积分10
37秒前
luckweb发布了新的文献求助10
37秒前
37秒前
41秒前
44秒前
传奇3应助wujiwuhui采纳,获得10
46秒前
开心寄松完成签到,获得积分10
48秒前
北宫完成签到 ,获得积分10
48秒前
wansida完成签到,获得积分10
52秒前
QXS完成签到 ,获得积分10
52秒前
53秒前
菠萝完成签到 ,获得积分10
53秒前
领导范儿应助Villanellel采纳,获得10
57秒前
wintersss完成签到,获得积分10
57秒前
尹尹发布了新的文献求助10
58秒前
量子星尘发布了新的文献求助10
1分钟前
zzzzzz完成签到 ,获得积分10
1分钟前
坦率的枕头完成签到,获得积分10
1分钟前
XS_QI完成签到 ,获得积分10
1分钟前
与共发布了新的文献求助10
1分钟前
苑阿宇完成签到 ,获得积分10
1分钟前
yck1027完成签到,获得积分10
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038066
求助须知:如何正确求助?哪些是违规求助? 3575779
关于积分的说明 11373801
捐赠科研通 3305584
什么是DOI,文献DOI怎么找? 1819239
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022