Constructional technology of welding concrete steel under the beam and strengthening with concrete cast are introduced.
介绍了梁底焊筋，混凝土浇注加固施工工艺。
2
Concrete is a kind of composition constructional material, which consists of sandstone, cement and water, etc.
混凝土是由一种复杂的复合建筑材料，主要由砂石、水泥和水等组成。
3
This paper discussed the related parameters and important constructional matters in using soundless broken preparation for demolishing concrete and steel reinforced concrete.