Water-permeable agent for water-permeable bricks or water permeable concrete and application of water-permeable agent

Abstract

The invention discloses a water-permeable agent for water-permeable bricks or water permeable concrete and application of the water-permeable agent. The water-permeable agent comprises, by weight, 75-110 parts of water reducing agent, 150-300 parts of retarder, 100-150 parts of binder, 55-70 parts of air entraining agent and 55-100 parts of water. The water-permeable agent has the advantages that the water-permeable agent can increase the workability of a water-permeable layer, increase water permeability and increase the durability and later strength of the water-permeable bricks and is low in adding amount and low in cost. The water-permeable bricks have the advatnages that the bricks use haycite and regenerated porous coarse aggregate as the aggregate of the water-permeable layer and use the water-permeable agent, the features of porosity, good water absorption performance and high strength of the aggregate and the good performance of the water-permeable agent are utilized to increase the strength and water permeability of the water-permeable bricks, and the bricks are lightweight and convenient to carry.

Description

technical field [0001] The invention relates to a water-permeable agent for permeable bricks or concrete and its application, belonging to the technical field of building materials. Background technique [0002] Permeable bricks and permeable concrete can absorb and utilize rainfall on the spot, replenish groundwater resources quickly, reduce the waste of urban water resources, and slow down the drainage pressure of urban sewers. With the construction of sponge cities in various cities, permeable bricks and permeable concrete will have broad market prospects. In the preparation process of permeable bricks and permeable concrete, admixtures to improve their performance are required. [0003] Pervious concrete has the characteristics of low water-binder ratio and no fine aggregate. At present, most pervious concrete and permeable bricks are replaced by ordinary concrete admixtures, such as cement. The use of the above-mentioned cementing agent is likely to cause problems suc...

AI Technical Summary

Problems solved by technology

The compressive strength of the permeable bricks is generally low, and the mud is easy to block the gaps inside the permeable bricks, resulting in a greatly reduced water permeability, so the later maintenance costs are higher

At present, the admixtures used in permeable bricks are mainly to increase their strength, and the permeable effect is poor.