Prediction of antifreeze critical strength of infant age concrete

IMR OpenIR

	Prediction of antifreeze critical strength of infant age concrete
其他题名	Prediction of Antifreeze Critical Strength of Infant Age Concrete
	Jun Liu 1; Liu Runqing 1
	2008
发表期刊	JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
ISSN	1000-2413
卷号	23 期号:2 页码:272-275
摘要	The rule of infant age concrete strength development under low temperature and complex affecting factors is researched. An efficient and reliable mathematical forecast model is set up to predict the infant age concrete antifreeze critical strength under low temperature at construction site. On the basis of the revision of concrete equivalent coefficient under complex influencing factors, least-squares curve-fitting method is applied to approximate the concrete strength under standard curing and the forecast formula of concrete compressive strength could be obtained under natural temperature condition by various effects. When the amounts of double-doped are 10% fly ashes and 4% silica fumes as cement replacement, the antifreeze critical strength changes form 3.5-4.1 MPa under different low temperature curing. The equivalent coefficient correction formula of concrete under low temperature affected by various factors could be obtained. The obtained equivalent coefficient is suitable for calculating the strength which is between 10% to 40% of standard strength and the curing temperature from 5-20 degrees C. The forecast value of concrete antifreeze critical strength under low temperature could be achieved by combining the concrete antifreeze critical strength value with the compressive strength forecast of infant age concrete under low temperature. Then the theory for construction quality control under low temperature is provided.
其他摘要	The rule of infant age concrete strength development under low temperature and complex affecting factors is researched. An efficient and reliable mathematical forecast model is set up to predict the infant age concrete antifreeze critical strength under low temperature at construction site. On the basis of the revision of concrete equivalent coefficient under complex influencing factors, least-squares curve-fitting method is applied to approximate the concrete strength under standard curing and the forecast formula of concrete compressive strength could be obtained under natural temperature condition by various effects. When the amounts of donble-doped are 10% fly ashes and 4% silica fumes as cement replacement, the antifreeze critical strength changes form 3.5-4.1MPa under different low temperature curing. The equivalent coefficient correction formula of concrete under low temperature affected by various factors could be obtained. The obtainede quivalent coefficient is suitable for calculating the strength which is between 10% to 40% of standard strength and the curing temperature from 5-20 ℃. The forecast value of concrete antifreeze critical strength under low temperature could be achieved by combining the concrete antifreeze critical strength value with the compressive strength forecast of infant age concrete under low temperature. Then the theory for construction quality control under low temperature is provided.
关键词	low temperature concrete infant age equivalent coefficient least-squares curve-fitting strength prediction
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:3316458
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/150368
专题	中国科学院金属研究所
作者单位	1.大连大学 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Jun Liu,Liu Runqing. Prediction of antifreeze critical strength of infant age concrete[J]. JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,2008,23(2):272-275.
APA	Jun Liu,&Liu Runqing.(2008).Prediction of antifreeze critical strength of infant age concrete.JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,23(2),272-275.
MLA	Jun Liu,et al."Prediction of antifreeze critical strength of infant age concrete".JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 23.2(2008):272-275.