Ningbo BoFang Wind Power Technology Co., Ltd. is the certified dealer for high-strength grouting material products in China. We have provided Sikaflex grouting materials and services for the foundation construction of wind power projects across the country. We have great products and a dedicated team, and the company is rapidly growing. We offer our clients products, excellent technical support, and comprehensive services. Ningbo BoFang Wind Power Technology Co., Ltd. is a Sikaflex grouting material and wind power grouting material enterprise. If you are interested in our products and services, please leave an online message or call for more information.
The development of high-strength cement grouting material technology has played a significant role in the advancement of reinforcement and renovation industries. In recent years, the strength of cement grouting materials has been progressively improving, reflecting the continuous growth of the grouting material industry and promoting the development of reinforcement and renovation. However, in the promotion and application of cement grouting materials, it has not reached the desired level: some manufacturers always think that using more cement will benefit the quality of the grouting material, which is actually a very incorrect practice.

What's the difference between grouting agent and grouting material?
Pressing agent has excellent properties such as slight expansion, no shrinkage, high fluidity, self-compaction, low bleeding rate, high filling degree, thin diameter of air cell foam layer, high strength, anti-corrosion, low alkalinity and chloride-free, high bonding strength, and green environmental protection. It does not contain harmful components such as oxides, chlorides, sulfites, and nitrites to steel bars. It is refined from high-performance plasticizers, surfactants, calcium silicate microexpansion agents, hydration heat inhibitors, migrating corrosion inhibitors, nanometer mineral silicon aluminum calcium iron powder, and stabilizers, or compounded with refined low-alkali, low-heat silicate cement, etc.

The strength of Sikal's grouting material is primarily determined by the mix ratio, water-cement ratio, aggregates, additives, density, and subsequent maintenance. The mix ratio can be optimized to enhance the strength of the grouting material. The compressive strength of the grouting material is proportional to the strength of the cement used, as per the formula; when the water-cement ratio is equal, grouting material mixed with high-strength cement has significantly higher compressive strength than that mixed with low-strength cement. Additionally, the water-cement ratio is also directly proportional to the strength of the grouting material. Therefore, attempting to increase the amount of cement to enhance concrete strength when the water-cement ratio remains constant is incorrect. In such cases, it only affects the workability, shrinkage, and deformation of the grouting material.

Reason Analysis for Sikal Injection Mastic Drying Shrinkage Leak
Despite varying opinions among scholars regarding the details of the drying shrinkage mechanism of grouting materials, there is still no unified and entirely satisfactory explanation. However, after years of research, it is generally agreed that the main cause of shrinkage in hardened cement is the evaporation and loss of water from capillary and gel pores in grouting materials. In other words, drying shrinkage causes the loss of water from capillary pores in the hardened paste, leading to the formation of concave liquid surfaces and a pressure difference P between the inside and outside of the capillary walls, which is why P is high, resulting in greater drying shrinkage. The factors affecting P and their relationships are described by the Young-Laplace equation.
Therefore, for grout materials with the same amount of binder, water-to-binder ratio, fluidity, and environment, the drying shrinkage depends on the surface tension of the liquid in the capillary pores of the grout material, the contact angle between the liquid and the capillary wall, and the radius of the capillary pores.
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