干旱区生态环境知识资源中心(Arid): 低温作用下沙漠砂替代率和粉煤灰掺量对混凝土抗压强度影响

Arid

	低温作用下沙漠砂替代率和粉煤灰掺量对混凝土抗压强度影响
其他题名	EFFECTS OF DESERT SAND REPLACEMENT RATE AND FLY ASH CONTENT ON THE COMPRESSIVE STRENGTH OF CONCRETE UNDER LOW TEMPERATURE
	马映昌; 刘海峰; 张明虎
来源期刊	工业建筑
ISSN	1000-8993
出版年	2020
卷号	50 期号:5 页码:81-
中文摘要	为研究低温作用下沙漠砂替代率和粉煤灰掺量对混凝土抗压强度的影响,进行单掺沙漠砂、单掺粉煤灰、双掺沙漠砂和粉煤灰混凝土在室温,-10,-20,-30 ℃时的抗压强度试验,分析温度、沙漠砂替代率和粉煤灰掺量对混凝土抗压强度的影响规律,建立混凝土抗压强度与温度、沙漠砂替代率和粉煤灰掺量之间回归关系模型。试验结果表明:随着温度降低,低温下混凝土抗压强度呈增大趋势,低温后混凝土抗压强度随温度降低呈减小趋势;对于单掺沙漠砂混凝土,混凝土抗压强度随沙漠砂替代率增加呈先增大后减小趋势,沙漠砂替代率50%时混凝土抗压强度最大;对于单掺粉煤灰混凝土,混凝土抗压强度随着粉煤灰掺量增加呈减小趋势;对于双掺沙漠砂和粉煤灰混凝土,沙漠砂替代率50%,粉煤灰掺量10%时,混凝土抗压强度最大。
英文摘要	In order to study the effects of desert sand replacement rate and fly ash content on the compressive strength of concrete under low temperature,the compressive strength tests of concrete with desert sand,fly ash,the mixture of desert sand and fly ash under room temperature,-10 ℃,-20 ℃,-30 ℃ were carried out.The influences of temperature,desert sand replacement rate and fly ash content on the compressive strength of concrete were analyzed.The regression model between the compressive strength of concrete with temperature,desert sand replacement rate and fly ash content was established.The test results showed that the compressive strength of concrete increased under low temperature with the decrease of temperature.Whereas,after being subjected to low temperature,the compressive strength of concrete decreased with the decrease of temperature.For the concrete with desert sand,the compressive strength of concrete increased firstly,and then decreased with the increase of desert sand replacement rate.The compressive strength of concrete with desert sand replacement rate 50% was the maximum value.For the concrete with fly ash,the compressive strength of concrete tended to decrease with the increase of fly ash content.For the concrete with the mixture of desert sand and fly ash,the compressive strength of concrete reached the maximum value when desert sand replacement rate and fly ash content were 50% and 10%,respectively.
中文关键词	低温 ; 混凝土 ; 沙漠砂替代率 ; 粉煤灰掺量 ; 抗压强度
英文关键词	low temperature concrete desert sand replacement rate fly ash content compressive strength
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Construction & Building Technology
CSCD记录号	CSCD:6765931
来源机构	宁夏大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336707
作者单位	马映昌, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国.; 刘海峰, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国.; 张明虎, 宁夏大学土木与水利工程学院, 银川, 宁夏 750021, 中国.
推荐引用方式 GB/T 7714	马映昌,刘海峰,张明虎. 低温作用下沙漠砂替代率和粉煤灰掺量对混凝土抗压强度影响[J]. 宁夏大学,2020,50(5):81-.
APA	马映昌,刘海峰,&张明虎.(2020).低温作用下沙漠砂替代率和粉煤灰掺量对混凝土抗压强度影响.工业建筑,50(5),81-.
MLA	马映昌,et al."低温作用下沙漠砂替代率和粉煤灰掺量对混凝土抗压强度影响".工业建筑 50.5(2020):81-.