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1、技术交底书编制部门工程部编号LXSZ-GCB-003主送部门生产部、安质部、机物部、搅拌站、实验室、工班日期2010-06-30工程名称肃州制梁场工程部位梁体混凝土施工内容:1、见后附《技术交底书》。保证质量措施严格按照施工图、技术交底书作业。环保措施做好防尘、污水排放措施,并将工作场地清扫干净。安全措施派专人负责现场施工安全。编制:复核:签收:thethree.Third,seriouslyimplementtheCentral,provincial,municipalandCountypartyCommitteeontheestabl
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6、teedetailedswitchand,casting,tree-generatingactivities. Promote技术交底书双线简支箱梁预制混凝土施工技术交底1、混凝土的配料和拌制1.1、混凝土原材料水泥采用强度等级为P.O42.5的低碱普通硅酸盐水泥;细骨料采用细度模数为2.6~3.0的中砂;粗骨料采用5~10mm,10~20mm碎石;外加剂采用LGS-XC聚羧酸高效减水剂。混凝土配合比选定由试验室通过试验选定,选定C50梁体混凝土理论配合比为:水泥:粉煤灰:砂:5~10mm碎石:10~20mm碎石:高效减水剂:水=1:0
7、.26:1.88:1.17:1.75:0.014:0.39,水胶比为0.31,每立方米混凝土用料量:水泥377kg,粉煤灰100kg,砂675kg,5~10mm碎石440kg,10~20mm碎石660kg,高效减水剂5.25kg,水124kg,,如因条件发生变化等原因,配合比重新选定时,由试验室及时通知有关部门。1.2、混凝土采用拌合搂集中拌制,拌合前,试验人员必须测定砂石的含水率,准确测定因天气变化而引起的粗细骨料含水量变化,以便及时调整施工配合比,将选定的理论配合比换算成施工配合比,计算每盘混凝土实际需要的各种材料量,填写配料通知单送
8、交拌合楼。混凝土配料必须按试验室通知单进行,并有试验人员值班,配料采用全自动计量系统计量,并在微机上做好记录。一般情况下,含水量每班抽测两次,雨天随时抽测,并按测定结果及时调整混凝土施工配合比