1, cement brick should be the cheapest, and its use is the same as that of sintered brick. Cement brick is mainly composed of stone powder and some fine stones plus cement. Sintered bricks are mainly composed of clay, so the demand for clay in the production of sintered bricks is relatively large, which will destroy the soil. Now the country is not allowed to produce sintered bricks, and cement bricks (other environmentally friendly bricks) are its substitutes.
2. Pave the ground with water-permeable bricks, and rainwater can quickly penetrate into the ground through the water-permeable bricks without accumulating water on the ground. Permeable brick is composed of cement, fine stones and a small amount of sand. The surface of permeable brick is composed of quartz sand (different from ordinary river sand) and cement, so the cost is relatively high, and the price will be more expensive than ordinary pavement brick.