compared with SNF, what is the advantages of PCE?
Polycarboxylic acid-based high-performance water reducers are a new generation of high-performance water reducers that have emerged in China and abroad in recent years.
Compared with traditional high range water reducers such as naphthalene-based water reducers, polycarboxylic acid-based high-performance water reducers have many unique technical performance advantages:
(1) low dosage and high water reduction rate;
(2) good fluidity retention of concrete mixture;
(3) good compatibility with cement;
(4) small shrinkage of prepared concrete, which is conducive to improving the volume stability and durability of concrete;
(5) environmentally friendly and pollution-free during production and use, and is a green admixture.
It is precisely because of the above performance advantages that polycarboxylic acid-based high-performance water reducers have begun to attract widespread attention in the domestic engineering community in recent years. Many important projects have already used this new type of water reducer in large quantities, such as the Shanghai Maglev, Shanghai World Financial Center, Hangzhou Bay Cross-sea Bridge, Donghai Bridge, Beijing Yintai Building, Beijing Capital International Airport Expansion Project, etc. It can be foreseen that due to the above many unique performance advantages, polycarboxylic acid-based high-performance water reducers will quickly become the mainstream product in the water reducer market.
Since polycarboxylic acid-based high-performance water reducers are mostly in liquid form, the powder making process is complicated and the production process is unsafe. Therefore, they are mostly sold in bulk form on the market. Recently, due to the improvement of technology and the improvement of the powder making process, polycarboxylic acid-based high-performance water reducers in powder form have become more common. In contrast, products in powder form provide a lot of convenience from transportation to customer use, and since then, powders have become the development trend of such products.