高温后轻质多孔混凝土力学性能试验
发布时间:2018-06-25 16:24
本文选题:轻质加气混凝土 + 高温后 ; 参考:《同济大学学报(自然科学版)》2017年06期
【摘要】:通过高温后轻质加气混凝土的力学性能试验,测得了抗压强度、弹性模量和峰值应变与温度的关系.试验表明:高温后轻质加气混凝土的抗压强度在100℃时略微提高,到300℃时逐渐下降,超过300℃时,强度变化不明显;在100℃以内,弹性模量基本保持不变,超过100℃后,弹性模量不断减小,与温度成线性关系;随着温度的升高,峰值应变逐渐增大,呈直线上升趋势.最后分析了不同温度下的应力-应变曲线,提出了高温后轻质加气混凝土的本构模型.
[Abstract]:The relationship between compressive strength, elastic modulus and peak strain and temperature was measured through mechanical properties test of lightweight aerated concrete after high temperature. The test results show that the compressive strength of lightweight aerated concrete increases slightly at 100 鈩,
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