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利用落锤式弯沉仪对半刚性基层和贫混凝土基层上板体的翘曲变形进行了连续24h的实测对比。并对4×4.5m大板和4×2.25m小板的弯沉进行实测对比,提出了通过减小板块尺寸释放贫混凝土基层上面板过量的翘曲变形的方法。
The bending deformation of semi-rigid base and lean concrete base were measured by drop-weight deflectometer for 24h. The deflection of 4 × 4.5m slab and 4 × 2.25m slab is measured and compared. The method of releasing excess slab warpage on lean concrete base by reducing the slab size is proposed.