Advantages and disadvantages of polycarboxylic acid superplasticizer
In many concrete projects, traditional high-efficiency concrete such as the naphthalene series can not meet the needs of engineering and more due to the limitation of technical performance. The new generation of a polycarboxylic acid series high-performance water-reducing agent, which has attracted much attention at home and abroad, has achieved an effective molecular structure design according to the action mechanism of dispersed cement. It has the super dispersive type, which can prevent the slump loss of concrete without causing obvious retarding of coagulation, and it plays a high plasticizing effect under low dosage. Good liquidity retention, cement ADAPTS to a wide range of molecular structure freedom, and synthesis technology, the high-performance room is large, on substantial enhancement effect is significant, and can reduce the shrinkage of concrete; harmful substance content is shallow technical performance characteristics; the concrete is endowed with excellent construction workability, good strength development, excellent durability, polycarboxylic acid series of high-performance water reducing agent has good comprehensive technical performance advantages and environmental protection characteristics, in line with the needs of modern concrete engineering. Therefore, polycarboxylic acid series superplasticizer is gradually becoming the preferred admixture for high-performance concrete. It is reported that polycarboxylic acid admixtures account for more than 80% of all high-performance admixtures in Japan and more than 50% in North America and Europe. In China, polycarboxylic acid superplasticizer has been successfully applied only in the Three Gorges Dam, Sutong Bridge, Tianwan nuclear power plant, Beijing-Shanghai high-speed railway and another large national water conservancy, bridge, atomic power, and railway projects, and has achieved remarkable results. It is suitable for precast and cast-in-place concrete, reinforced concrete, and prestressed concrete of high-speed railways, dedicated passenger lines, industrial and civil construction, road, bridge, port terminal, airports, and other projects. It is especially suitable for projects with long construction times and high requirements for concrete slumps, such as nuclear power projects. If you are looking for high quality, high purity and cost-effective water reducer, or if you require the latest price of water reducer, please feel free to email contact mis-asia.