High-concentration water-reducing admixture has certain early strength, water-reducing, and strengthening effects. It is a natural curing admixture. It has good durability and can effectively improve the pore structure of concrete, thus greatly improving the impermeability and resistance of concrete. Durability performance indicators such as carbonization and freeze-thaw resistance. Today, our water-reducing agent manufacturer will explain to you the design of the high-concentration water-reducing agent formula. Let’s take a look at the detailed introduction below:
There are differences between high-concentration water-reducing agents and general high-efficiency water-reducing agents. , so we must treat them differently when using them, and we must pay attention to some precautions and avoid confusion. Polycarboxylic acid-based high-efficiency water-reducing agents still have problems with cement adaptability. In addition, the quality of sand and stone materials and the quality of admixtures such as fly ash, mineral powder, etc. have an impact on the performance of concrete mixed with polycarboxylic acid-based high-efficiency water-reducing agents. It has a certain impact and should be taken seriously. The problem of excessive dosage of polycarboxylic acid-based high-efficiency water reducing agent. When the amount is exceeded, adverse phenomena such as segregation, bleeding, hardening, and excessive gas content will occur. Long-term contact between the polycarboxylate superplasticizer and iron materials should be avoided. Since polycarboxylic acid superplasticizer products are often acidic and will react slowly when in contact with iron products for a long time, and may even darken or blacken the color of the product, resulting in a decline in product performance. It is recommended to use polyethylene plastic barrels or stainless steel to store the product to ensure product safety. Storage stability.
Based on the action mechanism of the water-reducing agent, a new type of high-concentration water-reducing agent was designed and synthesized using self-made monomers. The synthesis formula and process are as follows: m (maleic anhydride): m (acrylic acid Polyethylene glycol monoester): m (sodium propylene sulfonate) = 1: 3: 2.4; 1% K2S2O8 was selected as the initiator, the reaction temperature was 85°C, and the reaction time was 6 hours. The performance test results of the trial product show that this high-concentration water-reducing agent has excellent dispersion ability and good workability. Its dosage is 0.3%, which can significantly reduce the fluidity loss of cement slurry over time.
Infrared spectrum analysis shows that the molecular structure of the synthesized product is basically consistent with the designed molecular structure. High-quality high-efficiency water-reducing agents can reduce the water-cement ratio of concrete, reduce the slump loss of concrete, improve workability, and give concrete high density and excellent construction performance. Among many series of water-reducing agents, high-concentration water-reducing agents have a wide range of applications and have the advantages of high water-reducing properties, low slump loss, low dosage, and environmental protection.
By absorbing advanced synthesis processes at home and abroad, combined with years of research on polycarboxylic acid free radical polymerization, various targeted and highly adaptable normal temperature, low temperature, and high temperature polycarboxylic acid mother liquor synthesis processes have been developed , and corresponding supporting synthesis equipment, its synthesis process has wide adaptability and high cost performance. After practical application, it has greater comprehensive advantages than similar processes in the market, creating value for partners.
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