北单比分直播新浪爱彩单:Paving requirements for cast steel bricks
High-quality poured steel bricks must have good water-moving function to ensure that the water that has penetrated can penetrate into the water-based foundation in a timely and effective manner. Therefore, it is important to use the cemented material mixed with steel or lime as the sanding pad. Floor. Its bedding requirements are:
1, should be washed in the coarse sand, because of the energy premise of the household, the physical indicators of the cast steel mat sand is not specified.
2. The physical function of other cast steel bricks should meet the requirements of the scale.
3, should be semi-dry sand, the humidity control method is, the hand knead the mixing material into a group, after the loosening, of course, the divergence is the pass, dry and wet is conducive to flattening the pavement, reducing the fine density of the Yang dust and the transfer cushion.