已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

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
4秒前
4秒前
泽荣杨完成签到,获得积分10
7秒前
Lee发布了新的文献求助10
9秒前
虚幻豌豆发布了新的文献求助10
10秒前
iNk应助lina采纳,获得20
12秒前
12秒前
13秒前
JamesPei应助山奈采纳,获得10
15秒前
华仔应助hyhyhyhy采纳,获得10
15秒前
Lee完成签到,获得积分20
16秒前
16秒前
可爱的函函应助苏和杨采纳,获得10
16秒前
风车发布了新的文献求助10
17秒前
17秒前
17秒前
RRRZZ完成签到 ,获得积分10
20秒前
风车完成签到,获得积分10
22秒前
li完成签到 ,获得积分10
23秒前
在水一方应助Transition采纳,获得10
26秒前
Rewi_Zhang完成签到,获得积分10
29秒前
30秒前
小马甲应助小郭不洗锅采纳,获得10
33秒前
豆包完成签到,获得积分10
33秒前
如果发布了新的文献求助10
33秒前
34秒前
烂漫酬海发布了新的文献求助10
37秒前
38秒前
宇冠琉璃完成签到,获得积分10
39秒前
发一篇sci完成签到 ,获得积分10
40秒前
子非鱼发布了新的文献求助10
40秒前
小郭不洗锅完成签到,获得积分10
42秒前
兼听则明完成签到,获得积分10
42秒前
传奇3应助新的旅程采纳,获得10
43秒前
43秒前
情怀应助Jason采纳,获得10
44秒前
JamesPei应助123采纳,获得10
45秒前
sjs11完成签到,获得积分10
46秒前
loen完成签到,获得积分10
49秒前
一直向前发布了新的文献求助10
51秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989832
求助须知:如何正确求助?哪些是违规求助? 3531967
关于积分的说明 11255613
捐赠科研通 3270725
什么是DOI,文献DOI怎么找? 1805035
邀请新用户注册赠送积分活动 882181
科研通“疑难数据库(出版商)”最低求助积分说明 809208