摘要
为了解决当前T梁混凝土配合比设计方法会明显增大水胶比、浆骨比以及对粗骨料的骨架作用重视不够的问题,以水胶比、胶浆体积和粗、细骨料体积为出发点,对高速公路24个预制梁场T梁C50混凝土配合比设计参数进行了统计分析。结果表明,水胶比、胶浆体积均具有较为固定的取值范围,且细骨料体积与粗骨料体积存在一定线性回归关系。基于此,提出了基于体积法设计T梁C50混凝土配合比的方法,并通过具体计算实例验证了这一方法的可靠性和有效性。
To solve the problems existing in current mix proportion design of T-beam concrete, such as obvious high water-binder ratio and paste-aggregate ratio, as well as insufficient emphasis on the framework role of coarse aggregate, this paper takes water-binder ratio, cementious paste volume, coarse aggregate and fine aggregate volume as the starting points, and analyses statistically the mix proportion parameters of T-beam C50 concretes from 24 prefabricated fields. The results show that the values water-binder ratio and cementious paste volume separately fixed in a certain range, and a definite linear regression relation exists between the fine aggregate volume and coarse aggregate volume. Based on the results, the mix proportion design of T-beam C50 conerete is developed by using absolute volume method. Moreover, this design method is verified to be reliable and effective by calculational examples.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2014年第6期97-102,共6页
Journal of Wuhan University of Technology
基金
湖北省交通厅科技计划(2012-857-2-19)
关键词
T梁
混凝土配合比设计
胶浆体积
骨料体积
T-beam
concrete mix proportion design
cementious paste volume
aggregate volume
