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某医院综合楼混凝土爆裂原因分析与鉴定
Appraisal and Analysis about Concrete Burst Accident of a Hospital Comprehensive Building
【摘要】 通过现场调查、白色生成物物相分析、有害物质分析等方式,确认了某医院综合楼混凝土爆裂的原因主要是由于混凝土中混入了生石灰,生石灰与水作用生成氢氧化钙,造成混凝土内部体积膨胀导致混凝土破碎并脱落。根据目前结构现状、试验分析结果及强度对比检测结果为爆裂对结构安全性能的影响做了评估鉴定,并提出了处理建议。
【Abstract】 By field investigation and phase analysis of white resultant and hazardous material analysis,the paper concluded the embedding quick lime was the cause of the concrete bursting. Calcium hydroxide during the quick lime hydration reaction process caused the volume expansion in concrete interior,which make the concrete breakage and loss. According to the building structure situation and experimentation result and test analysis result of the concrete strength,a influence appraisal of structure safety was made and some advice was given.
【关键词】 混凝土爆裂;
物相分析;
生石灰;
体积膨胀;
骨料碱活性;
【Key words】 concrete burst; phase analysis; quick lime; volume expansion; aggregate alkali activity;
【Key words】 concrete burst; phase analysis; quick lime; volume expansion; aggregate alkali activity;
- 【文献出处】 工程质量 ,Construction Quality , 编辑部邮箱 ,2015年12期
- 【分类号】TU755.7
- 【被引频次】3
- 【下载频次】109