青藏高原干热条件下高性能混凝土施工养护研究  

作　　者：王潘劳[1] 李成凯[1] 袁晓伟[1] 代大虎[1] 王黎军[1] 

机构地区：[1]青海大学,青海西宁810016

出　　处：《新型建筑材料》2005年第4期12-14,共3页New Building Materials

基　　金：国家"863"计划西部新材料行动资助项目(2003AA33X100)

摘　　要：青藏高原气候干热,空气相对湿度低,紫外线辐射强,水蒸发量大的恶劣环境对保证混凝土工程施工质量难度大。针对青藏高原的气候特点,研究了C30、C60高性能混凝土的配制与施工中水胶比及养护条件对混凝土强度的影响。通过选择干热养护与标准养护环境的对比研究表明,相同配比条件下,干热环境施工养护的混凝土28d强度是标准环境下的43%～58%。提出该地区混凝土施工养护采用覆盖蓄水物、定期注水与严密保湿养护措施,并应适当提高混凝土设计强度、降低水胶比。Abominable environments in Qinghai-Tibet Plateau makes it difficulty to guarantee the quality of concrete engineering construction such as xerothermic climatelow relative humiditystrong ultraviolet radiation and high evaporation capacity of water. Aiming at climate characteristics in Qinghai-Tibet Plateaustudy has been made on preparation of C30C60 high performance concrete and influence of water-glue ratio and curing conditions on the strength of concrete during construction.Comparisons between xerothermic and standard curing conditions show that construction curing under xerothermic circumstances the strength of concrete at 28 days is 43%～58% of that under standard conditions providing the same proportioning.It puts forward measures for construction curing of concrete such as cover with water accumulation substancewater injection periodicallytight wet reserving curingproperly increase the design strength of the concrete and reduce the water-glue ratio.

关 键 词：干热养护 标准养护 混凝土 

分 类 号：TU528[建筑科学—建筑技术科学]