When the permeable Dutch bricks are being laid, we must pay attention to the bottom layer treatment and must operate according to the specifications. So, when we operate, what aspects do we need to pay attention to? Today we will introduce this issue to us.
The laying of permeable Dutch bricks has high requirements for the treatment of the bottom layer because the cushion sand first has the effects of leveling the bottom layer, filtering water, and buffering the load. Therefore, when laying, the cushion sand should be semi-dry sand, and the humidity must be well controlled.攒 Knead the mixture into a ball. After loosening, it will be qualified. The wet and dry cushion sand is good for flat paving, reducing dust and improving the compactness of the cushion.
It is necessary for the cushion sand to have a good water permeability function to ensure that the permeated water can penetrate the water-permeable bottom layer in a timely and effective manner so that the water can be fully absorbed. Therefore, it is best not to use cementitious materials mixed with cement or lime as Sand cushion. The cushion sand should be medium coarse sand, which has higher strength and abrasion resistance, which can also cushion the effect.
What we have introduced above is the basic method for laying the bottom layer of permeable Dutch brick. It is very important to pay attention to these issues. I hope the above introduction will give you tips and assistance.