高性能混凝土自收缩影响因素的探讨

Discussion on the influences factors of high performance concrete self shrinkage

以沪杭铁路客运专线工程为例,通过对高性能混凝土由于自身收缩产生裂缝影响因素的分析,按细骨料细度模数不同、砂率不同、粉煤灰掺量不同三方面进行了试验研究,根据试验结果,针对各种影响因素提出了针对性措施,以期提高混凝土耐久性。

With passengers dedicated line engineering of Shanghai-Hangzhou railway as example,through analyzing of high performance concrete self shrinkage crack influences factors,the experiment was studied according to different aggregate fineness mode number,different sand percentage,different fly ash mixing amount.The corresponding measure were proposed according to testing result and against to various influences so as to enhance concrete durability.