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混凝土施工主要工序有浇筑、振捣、养护和拆模等工序。有关施工规范和施工操作规程对各道工序都有明确规定,如果违反规定和规程进行施工,如随意加水,水灰比控制不严,等待时间过长,浇筑不良,振捣不实及过振,养护不佳以及拆模过早等,混凝土的强度就不能满足结构设计的要求,就会使混凝土抗渗性、抗冻性、抗蚀性及耐久性大大降低,甚至会酿成质量事故。本期特别策划将针对不规范施工对混凝土质量产生的影响及危害进行讨论,诚邀业内人士参与其中发表观点,希望在观点中能提供具体的案例分析,供广大从业人员参考。
The main process of concrete construction pouring, vibration, maintenance and demolition of the mold and other processes. The construction practices and construction operating procedures for each procedure have a clear rule, if the violation of the rules and regulations for construction, such as random water, water-cement ratio lax control, waiting time is too long, poor pouring, vibrate and vibration , Poor maintenance and early demolition of the mold, the strength of the concrete can not meet the requirements of structural design, concrete impermeability, frost resistance, corrosion resistance and durability greatly reduced, and even lead to quality accidents. The special planning for this issue will address the impact of non-standard construction on the quality of concrete and the hazards discussed. We sincerely invite people from the industry to express their views and hope that we can provide specific case analysis in viewpoints for the reference of the general practitioners.