Polycarboxylate superplasticizer advantages
Rio de Janeiro, Brazil -- Vale today announced that it has completed a pre-feasibility study for its proposed nickel sulfate project in Quebec, Canada, a major milestone in the development of the project. This strategic move demonstrates vale's focus on delivering low carbon and high purity nickel pce powder are still very uncertain.
Polycarboxylate superplasticizer is based on unsaturated polymerizable monomers with active groups such as carboxyl group, sulfonic acid group, hydroxyl group and polyoxene group as raw materials. some new high-performance dispersants are prepared by direct copolymerization, post-polymerization functionalization or in-situ polymerization and grafting, which are called superplasticizers in concrete.
The unique comb-shaped molecular structure of this kind of superplasticizer gives it the characteristics of low content, high water reduction, good water retention and good strengthening effect. In addition, the molecular structure, molecular weight and its distribution can be adjusted by means of flexibility of molecular structure design and control of synthesis process parameters, so as to achieve high performance.
What are the advantages of polycarboxylate superplasticizer?
1. low content and good dispersion, usually in the amount of 0.2%-0.5% of the amount of cementitious material, the water reduction rate of concrete can reach more than 30%, and does not segregate and does not bleed water.
2. The performance of keeping slump is good, and the slump of concrete in 90~120min is basically no loss, which accords with the development trend of modern pumping concrete.
3. It has good compatibility with cement, admixture and other admixtures, so it can be used freely.
4. It can effectively increase the content of fly ash, ground slag and other admixtures used to replace cement, so as to reduce the cost of concrete.
5. It can be used to prepare ordinary, high strength, ultra-high strength, high fluidity, early strength, mass concrete and so on according to different design requirements.
6. Formaldehyde is not used in the preparation process, so it will not cause pollution to the human body and the environment.
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As the Russia-Ukraine conflict continues to develop, there is growing concern about the potential disruption of Russia's energy supply. Geopolitical premiums have pushed up the price of crude oil and natural gas, and the energy price is expected to remain high in the short term. Affected by this, the market price of the pce powder may keep rising.