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为了研究酸雨腐蚀对再生骨料砖混凝土实心砖砌体抗压性能的影响,该文以32榀相同特性的再生骨料混凝土实心砖砌体抗压试件为研究对象,利用国内先进的人工模拟大气环境实验室,对其进行喷淋-光照循环加速腐蚀试验及轴心抗压试验,对比分析了试件抗压强度、破坏形态、弹性模量和应力-应变关系随腐蚀循环次数的变化。试验结果表明:经酸雨腐蚀后的再生骨料混凝土实心砖砌体开裂荷载较小,裂缝出现较早,破坏相对严重;随着腐蚀次数的增加,应力-应变曲线斜率逐渐减小,弹性模量逐渐降低,抗压强度呈先升后降的趋势。经300次酸雨腐蚀,抗压强度下降29%,弹性模量下降42%。
In order to study the effect of acid rain corrosion on the compressive properties of recycled brick masonry concrete brick masonry, the 32 榀 compressive specimens of recycled brick masonry concrete brick masonry with the same characteristics as the research object, using the domestic advanced artificial simulation Atmospheric environment laboratory, the spray - light cycle accelerated corrosion test and axial compression test, comparative analysis of the specimen compressive strength, failure mode, elastic modulus and stress - strain changes with the number of corrosion cycles. The test results show that the solid brick masonry of recycled aggregate concrete after acid rain erode has a small cracking load, an early crack and a relatively serious damage. With the increase of corrosion times, the slope of stress-strain curve decreases gradually. The elastic modulus Gradually decreased, the compressive strength first and then decreased. After 300 acid rain erosion, the compressive strength decreased by 29% and the modulus of elasticity decreased by 42%.