混凝土在常规静、动荷载及次应力下产生的裂缝称荷载裂缝,归纳起来主要有直接应力裂缝、次应力裂缝两种。直接应力裂缝是指外荷载...
Research and application of green manufacturing system of ne...
research and development center jointly constructed by Hubei...
ISO 9001 quality management system certification
Certificate issued by Ministry of Science and Technology Ma...
Certificate issued by Wuhan Municipal Government: Researc...
Certificate issued by China Building Materials Federation an...
Certificate issued by Wuhan science and technology bureau an...