高海拔山区混凝土拌合物含气量经时变化规律  

Time-Varying Law of Concrete Gas Content in High Altitude Mountainous Area

作　　者：古源[1,2] 马春铖 黄文君 贺庆烨[1,2] 赵勇 徐文强 GU Yuan;MA Chuncheng;HUANG Wenjun;HE Qingye;ZHAO Yong;XU Wenqiang(Yunnan Key Laboratory of Building Structure and New Materials,Yunnan Institute of Building Science Co.,Ltd.,Kunming Yunnan 650223,China;Yunnan Construction Engineering Quality Inspection Station Co.,Ltd.,Kunming Yunnan 650223,China)

机构地区：[1]云南省建筑科学研究院有限公司云南省建筑结构与新材料企业重点实验室,云南昆明650223 [2]云南建筑工程质量检验站有限公司,云南昆明650223

出　　处：《工程质量》2023年第12期70-74,共5页Construction Quality

基　　金：云南省科技厅科技计划青年基金项目(2019FD024);云南省技术创新人才培养对象项目(20205AD160003)。

摘　　要：通过对海拔高度、温度、运输距离和浇筑方式等不同因素影响下混凝土含气量的测定,研究高海拔山区混凝土含气量经时变化规律。研究表明:随着海拔的上升,混凝土含气量经时损失越大;环境温度越高,混凝土含气量经时损失越大;不同运距混凝土含气量会根据影响因素量值的不同呈多种经时变化规律;采用泵送的方式浇筑混凝土,含气量会有不同程度的损失。根据研究结果,提出对高海拔山区混凝土质量控制的建议。Based on the measurement of concrete gas content under the influence of different factors such as altitude,temperature,transportation distance and pouring mode,the time-varying law of concrete gas content in high altitude mountain area was studied.The results show that the loss of concrete gas content increases with the increase of altitude.The higher the ambient temperature,the greater the loss of concrete gas content.The gas content of concrete with different transport distances varies according to different factors.When concrete is pumped,the gas content will be lost in different degrees.According to the research results,some suggestions on concrete quality control in high altitude mountain areas are put forward.

关 键 词：混凝土 混凝土含气量 高海拔山区 

分 类 号：TU528.07[建筑科学—建筑技术科学]