Improve weather resistance
After the water glass solution is coated or impregnated, it can penetrate into the gaps and pores. The solidified silicone gel can block the capillary channel and increase the density and strength of the material, thereby improving the weathering resistance of the material. However, water glass shall not be used to coat or impregnate gypsum products. Because the water glass reacts with gypsum to form sodium sulfate (Na2SO4), it crystallizes and swells in the pores of the product, causing cracking and destruction of the gypsum product.
The water glass and the calcium chloride solution are alternately injected into the soil, and the two solutions rapidly react to form a silica gel and a calcium silicate gel, which acts to bond and fill the pores, thereby improving the strength and carrying capacity of the soil. Commonly used for foundation reinforcement of silt, sand and fill, called double liquid grouting.
Formulating quick-setting waterproofing agent
Water glass can be formulated into a quick-setting waterproofing agent with a variety of crucibles, which can be used for local repairs such as plugging and caulking. The coagulation speed of the multi-pluton waterproofing agent is very fast, generally a few minutes, wherein the four-way waterproofing agent does not exceed 1 min, so it must be ready to use when used on the construction site.
Polyterpene water-repellent agents are commonly used in the following four types: cholesteric (copper sulfate), red strontium (potassium dichromate, K2Cr2O7), alum (also known as chalk, potassium aluminum sulfate), and purpura.