大掺量掺合料水泥大体积混凝土温度测试及分析  

TEMPERATURE TEST AND ANALYSIS OF MASSIVE CONCRETE MADE OF BIG CEMENT EXTENDER

作　　者：程芸芸 吕建福[2] 巴恒静[3] 

机构地区：[1]北京市建筑工程研究院,北京100039 [2]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001 [3]哈尔滨工业大学土木工程学院,哈尔滨150090

出　　处：《建筑技术开发》2014年第6期44-49,共6页Building Technology Development

摘　　要：通过现场测试从浇筑到28d龄期大体积混凝土的温度，获得混凝土内部瞬时温度场分布及温度随龄期的发展规律。结果表明：混凝土3d时的内表温差最大，最大温差为24℃，7，14d的内表温差逐渐减小，且最高温度逐渐从中心部位向下表面移动。上表面的温度和中心部位温度下降较快，下表面的温度在3～7d基本无变化，7-14d稍有下降。并测试不同水泥水化热，混凝土表面的空气温度、地基温度等，利用有限元软件进行混凝土温度场的数值模拟。模拟结果和实测温度分布和发展规律具有良好的一致性。The temperature of massive concrete from pouring to 28d is tested on site to obtain the field distribution of internal instantaneous temperature of concrete and development law of temperature at different ages. The test result indicates that the maximum internal surface temperature difference of concrete is 24 ~C which appears at 3d and reduces gradually at 7d and 14d, and that the maximum temperature moves from center to under surface. Temperatures of upper surface and center drop relatively faster than the under surface, whose temperature basically keeps unchanged at 3d to 7d and drops slightly at 7d to 14d. Different cement hydration heats, air temperature on concrete surface and foundation temperature are tested and finite element software ANSYS is used for numerical simulation of concrete temperature field. The simulation results show favorable coherence with the tested temperature distribution and development law.

关 键 词：大体积混凝土 水泥水化热 有限元分析 温度场 温度测试 

分 类 号：TU528[建筑科学—建筑技术科学]