（1）水泥，冬期施工中应优先选用硅酸盐水泥或普通硅酸盐水泥，水泥强度等级不低于
32.5级。最小的水泥用量不应少于300kg/m，水灰比不应大于0.6。使用其他品种水泥时，
应注意其中掺合料对隧道沟盖板混凝土抗冻、抗渗等性能的影响。掺防冻剂的混凝土，严
禁使用高铝水泥。
) Cement, Portland cement or ordinary portland cement shall be preferred in
winter construction, and the cement strength grade shall not be lower than
32.5. The minimum cement consumption shall not be less than 300kg / m, and the
water cement ratio shall not be greater than 0.6. When using other kinds of
cement, attention should be paid to the influence of admixtures on the frost
resistance and impermeability of tunnel trench cover concrete. High alumina
cement shall not be used for concrete mixed with antifreeze.
（2）隧道沟盖板模具混凝土骨料。冬期施工中，隧道沟盖板混凝土骨料必须清洁，不得含
有冰、雪等冻结物及易冻裂的矿物质。在掺有钾、钠离子防冻剂的混凝土中，骨料中不应
混有活性骨料。
(2) Concrete aggregate for formwork of tunnel trench cover plate. During winter
construction, the concrete aggregate of tunnel trench cover plate must be clean
and shall not contain frozen objects such as ice and snow and minerals easy to
freeze and crack. In the concrete mixed with potassium and sodium ion
antifreeze, the aggregate shall not be mixed with active aggregate.
（3）水。冬期施工中所用水必须首先满足隧道沟盖板混凝土搅拌用水的基本标准，并且要
适当提高其温度。混凝土原材料优先采用加热水的方法，当加热水仍不能满足要求时，再
对骨料进行加热。
3) Water. The water used in winter construction must first meet the basic
standard of water for concrete mixing of tunnel trench cover plate, and its
temperature shall be appropriately increased. The method of heating water is
preferred for concrete raw materials. When the heating water still fails to
meet the requirements, the aggregate shall be heated.
（4）外加剂。严格控制采用含有氯盐配置的早强剂及早强型减水剂；采用非加热养护法施
工中应掺用引气剂或有引气成分的外加剂；掺用含氯盐的防冻剂时，要严格限制其掺量。
4) Admixtures. Strictly control the use of early strength agent and early
strength water reducing agent containing chlorine salt; When non heating curing
method is adopted, air entraining agent or admixture with air entraining
component shall be mixed in the construction; When adding antifreeze containing
chlorine salt, its content shall be strictly limited.
