What is the reason for the leakage of the bottom of the toilet with foamed cement material and the a

In principle, the backfill material should be a light material such as cinder, and the general is also a building waste slag formed during decoration, such as broken bricks, broken floor tiles, etc., because it cannot form a compact, so the weight will not be very large, of course, it can not all be used as a backfill, one is a waste of cost, and the second weight is also very large. If the height of the settlement layer is very high, it is possible to exceed the load-bearing capacity of the floor slab. In practice, after the backfill reaches a certain height, it is leveled with cement mortar and tiled.

There are three ways to backfill, the best way is to use lightweight materials, preferably with pearl cotton ceramsite or foam bricks, plus sand and cement backfill. But this cost is higher. The second is to make prefabricated slabs overhead, that is, the underground is overhead with bricks, and a layer of prefabricated slabs is laid on top. >>>More

Now there is a foam mud called Jingwei backfill, which is better than ceramsite

1. Inspect and accept the appearance, variety, specification, packaging, size and quantity of materials, and form corresponding acceptance records. >>>More

I love you, do you love me, I love you, do you love me, fifteen words, and later found out that this is very silly,