Standard test method for measuring thickness of concrete elements using drilled concrete cores 用混凝土钻心估测混凝土元件厚度的标准试验方法
3.
Building material and building elements for three - layered chimneys ; elements of light - weight concrete for the inner layer ; requirements and tests 三层烟囱用建筑材料和建筑部件.内层用轻质混凝土元件
4.
Eurocode 2 : design of concrete structures . general rules . precast concrete elements and structures together with united kingdom national application document 欧洲规程2 :混凝土结构的设计.总则.预制混凝土元件和结件