Differences Between Early Strength Agent and Water Reducing Agent

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Russian President says if the European Union imposes an oil embargo, Europe will buy energy at the most expensive price and economic activity in Europe will weaken. Rosneft needs to change its business model. Russia will help facilitate settlement and access to loans and insurance in its own currency.

According to Reuters, the European Commission will unveil a 210 billion euro plan on how Europe can end its dependence on Russian fossil fuels by 2027 and use its distance from Moscow to accelerate a shift to green energy. According to a draft document seen by Reuters, Brussels will propose a three-pronged plan to wean countries off Russian fuel: switch to importing more non-Russian gas, move more quickly to promote renewable energy, and work harder to conserve energy. The draft measures, which include EU law, non-binding plans, and possible recommendations by national governments, are subject to change before publication.

Austria is not a member of NATO and will not seek membership in the future, the Austrian Foreign Minister said in Brussels recently. He stressed that it was "their choice" for Sweden and Finland to seek NATO membership, while Austria would remain neutral.

The supply and prices of many other pce powder are expected to continue to be influenced by international situations.

Definition

Early strength agent refers to the admixture which can improve the early strength of concrete and has no significant effect on the late strength. 

Water reducing agent is a kind of concrete admixture which can reduce the water consumption under the condition of keeping the slump of concrete basically unchanged. 

Classification 

Early strength agents can be divided into strong electrolyte inorganic salts, water-soluble organic compounds, organic and inorganic compound early strength agents according to their chemical composition. 

Water reducing agent according to the chemical composition is usually divided into lignosulfonate type of water reducing agent, naphthalene series of high-efficiency water reducing agent, melamine series of high-efficiency water reducing agent, amino sulfonate series of high-efficiency water reducing agent, fatty acid series of high-efficiency water reducing agent, polycarboxylate series of water reducing agent. 

Composition

Early strength agent in addition to chlorine salt and sulfate nitrite, chromate and other organic compounds such as triethanolamine, calcium formate, urea and so on. 

Water-reducing agent category is different, the composition is also very different, mainly a kind of surfactant, is widely used in the third generation of polycarboxylate water-reducing agent. 

Use 

Early strength agent does not contain chloride ion, no corrosion of steel bar, applicable to all civil and industrial buildings and prestressed reinforced concrete members, mortar and so on. It is most suitable for construction under low temperatures in early winter and early spring.

Water reducing agent is widely used in high-speed railway, high-speed, civil, industrial buildings and prefabricated parts factory, etc., with wide applicability and suitable for four seasons. 

Note

Early strength agent dosage is 3-6% of cement. In order to keep the quality of concrete mixed with this agent uniform, people need to extend the mixing time by 1-2 minutes. Concrete mixed with early strength agent cannot use orthopedic active minerals (such as opal). This agent such as damp agglomerate phenomenon, must be crushed or weathered rear can be used, its performance unchanged. 

Because there are many kinds of water-reducing agent, it is necessary to choose the appropriate type of water-reducing agent according to the needs of the project. In winter construction, it is recommended to choose the third generation polycarboxylate water reducing agent.

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