A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method of highway concrete in winter
The invention relates to a highway concrete winter construction method and the system comprises the following steps: S1, mixing concrete: doping an additive when preparing a concrete raw material; S2,transporting concrete: controlling the out-machine temperature and the in-mold temperature of a concrete mixture, and wrapping a pipeline for pumping the concrete with a thermal insulation material;S3, performing concrete pouring: when concrete joint is conducted, increasing the temperature of the joint face to 5 DEG C or above before new concrete pouring is conducted, and after concrete pouringis completed, continuing to keep the concrete joint face at the positive temperature till the newly-poured concrete obtains the specified anti-freezing strength; S4, performing concrete curing: selecting one of a heat storage method, a heating method and a negative temperature method for curing according to the construction period requirement, concrete raw materials, the construction air temperature and site construction conditions; S5, judging whether the concrete is frozen or not. The method has the effects of improving the strength of the concrete and improving the quality and durability of the concrete.
本申请涉及一种公路混凝土冬季施工方法，其包括S1.混凝土拌制，在配制混凝土原材料时掺入外加剂；S2.混凝土运输，控制混凝土拌和物出机温度和入模温度，且泵送混凝土的管道采用保温材料包裹；S3.混凝土浇筑，进行混凝土接缝时，在新混凝土浇筑前先将接合面温度加热至5℃以上，待混凝土浇筑完成后，混凝土接合面继续保持正温，直至新浇筑混凝土获得规定的抗冻强度；S4.混凝土养护，根据工期要求、混凝土原材料、施工气温以及现场施工条件选择蓄热法、加热法、负温法中的一种进行养护；S5.判定混凝土是否遭受冻害。本申请具有提高混凝土强度，改善混凝土的质量和耐久性的效果。
Construction method of highway concrete in winter
The invention relates to a highway concrete winter construction method and the system comprises the following steps: S1, mixing concrete: doping an additive when preparing a concrete raw material; S2,transporting concrete: controlling the out-machine temperature and the in-mold temperature of a concrete mixture, and wrapping a pipeline for pumping the concrete with a thermal insulation material;S3, performing concrete pouring: when concrete joint is conducted, increasing the temperature of the joint face to 5 DEG C or above before new concrete pouring is conducted, and after concrete pouringis completed, continuing to keep the concrete joint face at the positive temperature till the newly-poured concrete obtains the specified anti-freezing strength; S4, performing concrete curing: selecting one of a heat storage method, a heating method and a negative temperature method for curing according to the construction period requirement, concrete raw materials, the construction air temperature and site construction conditions; S5, judging whether the concrete is frozen or not. The method has the effects of improving the strength of the concrete and improving the quality and durability of the concrete.
本申请涉及一种公路混凝土冬季施工方法，其包括S1.混凝土拌制，在配制混凝土原材料时掺入外加剂；S2.混凝土运输，控制混凝土拌和物出机温度和入模温度，且泵送混凝土的管道采用保温材料包裹；S3.混凝土浇筑，进行混凝土接缝时，在新混凝土浇筑前先将接合面温度加热至5℃以上，待混凝土浇筑完成后，混凝土接合面继续保持正温，直至新浇筑混凝土获得规定的抗冻强度；S4.混凝土养护，根据工期要求、混凝土原材料、施工气温以及现场施工条件选择蓄热法、加热法、负温法中的一种进行养护；S5.判定混凝土是否遭受冻害。本申请具有提高混凝土强度，改善混凝土的质量和耐久性的效果。
Construction method of highway concrete in winter
公路混凝土冬季施工方法
YANG HUAZHONG (author) / XU YINGGANG (author) / WANG YANNAN (author) / WANG CAIYUN (author)
2021-01-15
Patent
Electronic Resource
Chinese
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