混凝土墊層技術交底.doc

交底內容：
混凝土墊層
本技術交底適用于工業與民用建筑地面混凝土墊層及室外散水等工程。
1．材料要求
(1)水泥：宜用325號硅酸鹽水泥、普通硅酸鹽水泥和礦渣硅酸鹽水泥。
(2)砂：中砂或粗砂，含泥量不大于5%。
(3)石子：卵石或碎石，粒徑0.5～3.2cm，含泥量不大于2%。
2．主要機具
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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