High Performance PCE Superplasticizer
PCE Superplasticizer is an effective water reducer and cement dispersant in cement concrete applications. It is widely used in highway, bridge, embankment, tunnel, skyscraper and other projects.
PCE superplasticizer instruction
The water reducing agent is environmentally friendly, non-flammable, explosive and safe to transport on trains and cars.
According to the differences in backbone structures, polycarboxylic acid superplasticizer products can be divided into two categories: using acrylic acid or methacrylic acid as backbone types and grafting polyethers with different side chain lengths.
Others are polyethers whose primary bond is maleic anhydride and which have different side chain lengths. Based on this, several powerful water-reducing products with different properties were derived.
Prior to the formation of the polycarboxylate dehydrating agent, it was necessary to reconstitute the supernatants from the polycarboxylate supernatants.
It has the advantage of low dosage, good droplet stability, low concrete shrinkage, high molecular structure controllability and high potential for high performance. Significant advantages such as the absence of formaldehyde in the process.
For the synthesis of a polycarboxylate water reducing agent, the design of the molecular structure is crucial, including the head group, side chain density, and side chain length in the molecule. . . The synthesis methods mainly include a grafting method with in situ polymerization, first a polymerization method, then a functionalization method, and a direct copolymerization method of the monomers.
PCE superplasticizer usage
In many concrete projects, traditional high-performance concretes such as naphthalene series cannot meet the project requirements due to technical performance limitations.
A new generation water reducing agent, a high-performance water reducing agent, polycarboxylate water, which has attracted a lot of attention at home and abroad because it has developed an effective molecular structure based on truly dispersed and super-dispersed cement mechanism.
It can prevent concrete from sagging without appreciable delay and prevents concrete from sagging because it can provide higher softening effect at low concentration, good flow retention, high cement free, high molecular weight and high pore elimination to apply to a variety of plastics to be suitable techniques. , good strength development, excellent durability and effective polycyclic acid water reducer.
Arboxylic has comprehensive technical advantages and environmental protection properties that meet the needs of modern concrete technology. Water-reducing polycarboxylate high-performance water-reducing agents are therefore increasingly being used for the production of high-performance concrete.
The use of polycarboxylic acid additives is reported to account for more than 80% of all high-performance additive products in Japan and more than 50% in North America and Europe. In my country, polycarboxylate water-reducing agents have only been successfully used in the Three Gorges Dam, Sutong Bridge, Tianwan Nuclear Power Plant, Beijing-Shanghai High-Speed Railway and other major national energy and railway systems. Projects that produce significant results.