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Differences between several kinds of Water Reducing Agents

The purchasing pace at the demand end of the international thermal coal market continues to slow down and the international thermal coal price continues to decline. Prices for thermal coal at major international ports continued to fall last week as buyers in Europe slowed in recent days for April, coupled with weaker-than-expected import demand from End users in China. According to China Coal Market net monitoring:  Australia Newcastle port thermal coal price index was 253 USD/ton, compared with 309.02 USD/ton, down 56.02 USD/ton, down 18.13%. South Africa's Port Richards thermal coal price Index was $264.5 / mt, down the US $62.72 / mt or 19.17% from US $327.22 / mt. The European ARA Tri-port thermal coal price Index was $281.8 / ton. Does the price of thermal coal in major international ports continue to decline to affect the price of the concrete superplasticizer? 

Introduction to Superplasticizer:

Superplasticizer, or high-efficient water reducing agent, has the functions of high efficient water reduction, slow coagulation, slump, and enhancement. It has strong adaptability to cement, less dosage, is easy to use, especially suitable for high-efficient water reduction and slow coagulation requirements of concrete engineering. The water reduction rate is 18% to 25%.

 

Differences between several kinds of Water Reducing Agent

Lignosulfonate

It is a common water-reducing agent made of lignin. Most of its raw materials are extracted from coniferous trees and other species of material. This water reducing agent mixed with mortar can improve the fluidity of mortar, and enhance the solidification force of mortar. Its water reduction rate is about five to ten percent. 

Naphthalene sulfonate water reducing agent

It is a special water reducing agent. It is the product of naphthalene reacting with sulfuric acid and then fusing with formaldehyde. This water-reducing agent presents different colors from light to deep. It has strong water solubility and a good dispersion effect for a series of powdery building materials like cement. Its water reduction rate is about 10 percent higher than lignin.

Polycarboxylate-based high-performance water reducing agent

It is a newly developed kind of reducing water agent using high technology. It is based on polycarboxylate as the main body of a variety of polymer organic compounds, graft copolymerization generated, with strong water reduction performance, is the world's leading technology environmental protection concrete admixture.

Its compatibility with all kinds of cement is good, the slump of concrete keeps the performance good, can prolong the construction time of concrete. It has a high water reduction rate with a low dosage. It can greatly improve the early and late strength of concrete. It has a low content of chloride ions and alkali, which is beneficial to the durability of concrete. It is a green environmental protection product with a pollution-free production process and without formaldehyde. It is suitable for precast and cast-in-place concrete, reinforced concrete, and prestressed concrete for high-speed railway, passenger dedicated lines, industrial and civil buildings, roads, bridges, ports and docks, airports, and other engineering construction. It is especially suitable for construction projects with long construction time and high requirements for concrete slumps, such as nuclear power projects. 

 

Properties and Advantages of Polycarboxylate-based High-performance Superplasticizer:

1, low dosage, high water reduction rate, water reduction rate can be up to 45%; 

2, the slump loss is small, the slump loss rate of ready-mixed concrete is less than 5% per hour, 10% per two hours;

3, the strengthening effect is significant, concrete 3d compressive strength increased by 50 ~ 110%, 28d compressive strength increased by 40 ~ 80%, 90d compressive strength increased by 30 ~ 60%; 

4, good workability of concrete, no segregation, bleeding phenomenon, uniform appearance of concrete color.  When used to prepare high grade concrete, the concrete has good cohesion and is easy to mix. 

5, moderate gas content, no adverse effect on the elastic modulus of concrete, good frost resistance durability; 

6, can reduce the early hydration heat of cement, is conducive to mass concrete and summer construction; 

7, excellent adaptability, cement, admixture compatibility is good, good temperature adaptability, and different varieties of cement and admixture has a good compatibility, to solve the problem of poor compatibility between other water-reducing agent and cementing materials; 

8, low shrinkage, can significantly reduce the shrinkage of concrete, freeze-thaw resistance and carbonization resistance is significantly better than ordinary concrete; Significantly improve concrete volume stability and long-term durability; 

9, alkali content is very low, alkali content ≤0.2%, can effectively prevent the occurrence of alkali aggregate reaction 

10, the product has good stability, long-term storage without stratification, precipitation phenomenon, no crystallization precipitation at low temperature; 

11, the product green environmental protection, formaldehyde-free, environmentally friendly products; 

12, good economic benefits, the comprehensive cost of the project is lower than the use of other types of products, the same strength conditions can save cement 15-25%.


Suppliers of Superplasticizer

TRUNNANO is a reliable superplasticizer supplier with over 12-year experience in nano-building energy conservation and nanotechnology development. If you are looking for a high-quality concrete superplasticizer, please feel free to contact us and send an inquiry. (sales@cabr-concrete.com)

We accept payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.


COVID-19 has led to many sites shutting down. What is the impact on China's foreign trade enterprises as a whole and small, medium and micro foreign trade enterprises?

. It is learned that some foreign trade enterprises have been affected by the epidemic and are facing periodic problems in production, operation, logistics and transportation. At the same time, problems such as rising raw material costs, slow cross-border transport and supply chain bottlenecks have not been fundamentally alleviated, and foreign trade enterprises, especially micro, small and medium-sized enterprises, are still facing considerable operating pressure. The price of concrete superplasticizer operated by foreign trade enterprises will also fluctuate with the changes of the epidemic. Contact us for the latest quotation on concrete superplasticizer.

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