weather resistance

In order to study the weathering characteristics of Cretaceous silty mudstone along the expressway from Changde to Jishou,the tests for the engineering characteristics,the weathering durability and the weathering rate are carried out for the argillaceous siltstone with different weathering degree.

为了研究湖南省常德至吉首高速公路沿线的粉砂质泥岩的风化特性,对不同风化程度的粉砂质泥岩岩体进行了工程特性、风化耐久性和风化速度试验。

To study the weathering characteristics of Cretaceous argillaceous siltstone,the engineering characteristics test,the weathering durability test,the weathering speed test were done for the different weathering degree argillaceous siltstone.

为了研究白垩系泥质粉砂岩的风化特性,对不同风化程度的泥质粉砂岩岩体进行了工程特性、风化耐久性和风化速度试验。

A method for manufacturing fire duct was investigated.

研究了一种新型耐火风管的制造方法,探讨了在一定的工艺条件下耐火风管主材-无石棉硅酸钙板的模压成型配方。