摘要
骨料占混凝土总体积的三分之二以上,直接影响混凝土的体积稳定性。骨料的稳定性不良通常包含二类情况,一类是碱活性骨料,另一类是骨料自身的一些软弱或不安定颗粒。对由页岩、含石膏、含游离钙、镁等三种自身软弱或含不安定颗粒骨料引起混凝土工程质量问题的案例进行分析。
Aggregate accounts for more than two-thirds of the total volume of concrete,which directly affects the volume stability of concrete.The poor stability of aggregate usually includes two kinds of situations,one is alkali active aggregate,the other is some weak or unstable particles of aggregate itself.The quality problems of concrete engineering caused by three kinds of weak or unstable aggregate such as shale aggregate,gypsum aggregate,free calcium aggregate and magnesium aggregate are analyzed.
作者
姚利君
YAO Lijun(Shanghai Research Institute of Building Sciences,Shanghai 201108,China)
出处
《混凝土》
CAS
北大核心
2020年第2期49-52,56,共5页
Concrete
关键词
骨料
稳定性
爆裂
脱落
岩相分析
aggregate
stability
spalling
obscission
petrographic analysis
