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요약정보
自然养护条件下各龄期混凝土抗压性能研究 / Experiment research of concrete compressive performance based on age and curing temperature
Resource Type
Academic Journal
Authors
庄金平
;
陈剑星
;
蔡雪峰
;
邱豪
;
ZHUANG Jinping
;
CHEN Jianxing
;
CAI Xuefeng
;
QIU Hao
Source
混凝土 / Concrete
. (8):151-155
Subject
龄期
养护温度
抗压性能
预测公式
应力-应变关系
Language
Chinese
ISSN
1002-3550
Online Access
Find it @ DONGA
초록
为研究自然养护条件下龄期和环境温度对混凝土抗压性能的影响,进行了25组75个立方体抗压试验,25组75个棱柱体轴心抗压试验,试验参数主要包括:28 d混凝土强度等级、龄期和环境累计温度.试验结果表明:龄期越早,养护累计温度对混凝土强度的发展进程影响越大,而龄期达到7 d以上养护累计温度对混凝土抗压强度发展的影响则较小.在试验的基础上,采用最小二乘法回归得到了基于龄期和养护累计温度的混凝土抗压强度预测计算式.最后,在现有混凝土受压应力-应变关系的基础上,提出了自然养护条件下基于龄期和养护累计温度双参数的受压应力-应变本构关系.
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