T/ZDL 014-2023 Active

Main Technical Content: 5. Pouring Material Construction Process Requirements 5.1 Pre-construction Considerations 5.1.1 Before construction, a corresponding construction plan shall be prepared based on the original equipment drawings and other documents, and approved by the relevant authorities. The contractor shall hold a Class III or higher general contracting qualification for power engineering projects, or a Class III or higher professional contracting qualification for building electrical and mechanical installation projects. 5.1.2 The ambient temperature at the construction site should be within the range of 5°C to 30°C. If it exceeds this range, appropriate cooling or insulation measures should be taken to prevent freezing. 5.1.3 Before construction, the construction area shall be cleaned, and oil stains, rust, and other attachments on the metal surfaces in contact with the pouring material shall be thoroughly removed. 5.1.4 Other pre-construction requirements shall comply with the relevant requirements of GB 50211. 5.2 Formwork 5.2.1 The formwork materials used for pouring material construction can be non-water-absorbent wooden or steel molds. They should have sufficient strength and rigidity and be resistant to deformation during use. 5.2.2 The dimensions of the formwork shall comply with the design drawings and be designed and fabricated based on the actual shape and position of the construction area. 5.2.3 When installing the formwork, it should be flat, with tight seams and no leakage of pouring material. If necessary, measures for fixing the formwork should be taken. 5.2.4 Before pouring, a release agent should be applied to the inside of the mold to facilitate subsequent demolding. 5.3 Raw Material Mixing 5.3.1 To ensure construction performance and quality, the raw materials shall be mixed using a forced mixer. Before use, the mixer should be cleaned to avoid contamination affecting construction quality. 5.3.2 The water u