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    解读压花地坪对基层混凝土的施工要求
    来源:http://www.jndmzp.com   时间:2015-2-12 15:03:59
    1、基层混凝土的强度≥C25,其水灰比应尽可能小。
    1, the strength of the concrete C25 or at the grass-roots level, the water cement ratio should be as small as possible. 
    2、混凝土中大的碎石骨料径≤30mm为宜,且基础面层必须辅以碎石骨料粒径≤15mm,厚度不低于20mm的碎石混凝土。
    2, the largest of concrete rubble aggregate diameter 30 mm or less advisable, and basic surface must be supplemented by gravel aggregate size 15 mm or less, the thickness of not less than 20 mm stone concrete. 
    3、混凝土的坍落度应控制在3-4cm。
    3, the slump of concrete should be controlled in 3-4 cm. 
    4、使用较重的钢制长锟多次反复滚压地台,做出地台水平。滚压地台时,应除净钢锟上异物。将混凝土砂浆提出来,确保表面没有砂石现象,在无法使用钢锟作业的部位,应采用样板刮作出地台水平。
    4, the use of heavier steel long kun repeated rolling platform, the platform level. When rolling platform, should remove all foreign bodies on the steel kun. The concrete mortar, ensure no sand surface, in can't use steel kun homework place, blow model should be adopted to make the platform level. 
    5、混凝土地台水平完成后,应进行沁水处理。
    After completion of level 5, concrete platform, should be to manipulate the qinshui. 
    6、要求上层为C30或C25的砂浆细石混凝土,上下层的总厚度为5-20cm。
    6, the requirement for the upper of C30 fine stone concrete or C25 mortar, the lower level of total thickness is 5 -- 20 cm. 

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