混凝土垫层技术交底.doc

交底内容：
混凝土垫层
本技术交底适用于工业与民用建筑地面混凝土垫层及室外散水等工程。
1．材料要求
(1)水泥：宜用325号硅酸盐水泥、普通硅酸盐水泥和矿渣硅酸盐水泥。
(2)砂：中砂或粗砂，含泥量不大于5%。
(3)石子：卵石或碎石，粒径0.5～3.2cm，含泥量不大于2%。
2．主要机具
Cards on the table contents:
Concrete liner
The technical disclosure ground for industrial and civil buildings and outdoor concrete liner, bulk water project.
1. Material requirements
(1) Cement: Portland cement 325 is preferred, ordinary Portland cement and slag cement.
(2) sand: the sand or coarse sand, mud content less than 5%.
(3) gravel: gravel or crushed stone, diameter 0.5 ~ 3.2cm, mud content is less than 2%.
2. Major equipment

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