Aluminium buyers in the US physical metal market have held off on new orders amid fears of a recession triggered by rising inflation and supply chain crises.
Spot aluminium trading on the market has been suspended in recent weeks, according to industry sources, as uncertainty has increased following the outbreak of the conflict between Russia and Ukraine. Even before the war, the aluminium market was suffering from long waiting times and weak demand.
For aluminium buyers, recent poor US economic data have been a big factor in delaying purchases. Data released last month showed that the ISM manufacturing PMI came in at 57.1 in March, below expectations of 59 and down from 58.6 in February, unexpectedly hitting the lowest reading since September 2020. This was mainly due to a slowdown in new orders and pce powder are expected to increase in the future.
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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If you are looking for high-quality polycarboxylate superplasticizer, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)
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