|Table of Contents|

Influence of placement temperature on mass concrete temperature stress(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2011年05期
Page:
68-71
Research Field:
Publishing date:
2011-10-20

Info

Title:
Influence of placement temperature on mass concrete temperature stress
Author(s):
LI Pan-wu1;  ZENG Xian-zhe2;  LI Bo-yuan3;  LU Yue-lin1
1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Shaanxi Province Company of Nature Gas, Xi'an 710063, Shaanxi, China; 3. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
structure engineering;  mass concrete;  placement temperature;  numerical analysis;  temperature stress;  crack
PACS:
TU755
DOI:
-
Abstract:
Based on the analyzing on structure cracking of the temperature stress of mass concrete, the influence on temperature stress during construction of concrete placement temperature was analyzed. According to the mechanism of mass concrete crack producing and performance of massive concrete temperature stress during construction, using the method of numerical analysis, mass concrete temperature stress and its influence factors were studied when mass concrete's placement temperature changes. The results show that the hydration of cement is accelerated and maximum temperature inside the concrete will occur ahead when mass concrete's placement temperature rises; the first principal stress of structure increases linearly, when placement temperature rises 1 ℃, the first principal stress of structure increases 2.47%; the mass concrete's cool temperature difference and the temperature difference between inside and outside increase with the increase of placement temperature, and the occurred time of maximum cool temperature difference and the maximum temperature difference between inside and outside will take place in advance with the increase of placement temperature. 4 figs, 11 refs.

References:

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Last Update: 2011-10-20