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某粮库地面的设计作法为:素土夯填→三七灰土45 cm 厚→SBS 卷材防潮层→C20混凝土随打随压10 cm 厚,做6.0 m×3.0 m 分格缝,缝宽3 mm。由于混凝土浇筑时留设3 mm 分格缝不易控制,征求设计单位同意改为整体地面,等混凝土达到设计强度等级标准值后,用切割机切割分格缝。为保证防潮层不被损坏,分格缝切割深度为地面厚度的2/3。
Design of a grain depot on the ground: plain soil ramming filling → 45 cm thick of Sanyi limestone → SBS membrane damp proof layer → C20 concrete with a pressure of 10 cm with a thickness of 6.0 m × 3.0 m, seam width 3 mm. Due to the concrete pouring 3 mm gap is not easy to control, seek the consent of the design unit to change to the whole ground, such as concrete to meet the design strength grade standard value, the use of cutting machine cutting seam points. To ensure the moisture barrier is not damaged, sub-grid seam cutting depth of 2/3 of the ground thickness.