This electronic factory building project is located in the 78M2 plot of Beijing Economic and Technological Development Zone, with a construction area of 21000 m2. It has two floors above the ground and one floor parti...This electronic factory building project is located in the 78M2 plot of Beijing Economic and Technological Development Zone, with a construction area of 21000 m2. It has two floors above the ground and one floor partially, without basement. The north-south span is 132.8m, the east-west span is 81m, the structural form is frame structure, the foundation is independent column foundation, and the column spacing is 6000×9000. After completion, it will become the largest production base of the electronic products company in Beijing. The first floor is a wear-resistant concrete floor, which is compacted by plain soil with a 300mm thick graded sand cushion layer and a compaction coefficient of not less than 0.95;200mm thick C20 concrete with Φ 6 @ 200 double-layer bidirectional reinforcement;80mm thick C25 fine stone concrete (internally equipped with φ6@200 single-layer bidirectional reinforcing steel bar), the design requires that 2mm thick wear-resistant material should be evenly spread on the surface of concrete before initial setting (refer to the design requirements for details of wear-resistant material). After the spreading is completed, mechanical trowel should be used for slurry lifting, troweling and calendering, so that the wear-resistant material can be embedded into the concrete surface layer and react with certain components in the concrete to finally form a hard wear-resistant surface layer so as to improve the wear resistance and impact resistance of the concrete surface. A series of technical measures, such as throwing the wear-resistant material twice, controlling the timing of throwing the wear-resistant material and the uniformity of throwing the material, curing the film and mechanically cutting the gap, etc., were adopted to form the ground with a smooth and smooth surface, uniform color, clear and straight grid seams, good appearance, strength and quality meeting the specification requirements, which were well received.展开更多
文摘This electronic factory building project is located in the 78M2 plot of Beijing Economic and Technological Development Zone, with a construction area of 21000 m2. It has two floors above the ground and one floor partially, without basement. The north-south span is 132.8m, the east-west span is 81m, the structural form is frame structure, the foundation is independent column foundation, and the column spacing is 6000×9000. After completion, it will become the largest production base of the electronic products company in Beijing. The first floor is a wear-resistant concrete floor, which is compacted by plain soil with a 300mm thick graded sand cushion layer and a compaction coefficient of not less than 0.95;200mm thick C20 concrete with Φ 6 @ 200 double-layer bidirectional reinforcement;80mm thick C25 fine stone concrete (internally equipped with φ6@200 single-layer bidirectional reinforcing steel bar), the design requires that 2mm thick wear-resistant material should be evenly spread on the surface of concrete before initial setting (refer to the design requirements for details of wear-resistant material). After the spreading is completed, mechanical trowel should be used for slurry lifting, troweling and calendering, so that the wear-resistant material can be embedded into the concrete surface layer and react with certain components in the concrete to finally form a hard wear-resistant surface layer so as to improve the wear resistance and impact resistance of the concrete surface. A series of technical measures, such as throwing the wear-resistant material twice, controlling the timing of throwing the wear-resistant material and the uniformity of throwing the material, curing the film and mechanically cutting the gap, etc., were adopted to form the ground with a smooth and smooth surface, uniform color, clear and straight grid seams, good appearance, strength and quality meeting the specification requirements, which were well received.
