What is the role and mechanism of water
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On construction sites or in home improvement, we see concrete being used a lot. It is important to add a water-reducing additive to concrete. Why is it necessary to add water-reducing agents to concrete and what are the functions and mechanisms of this additive. The answers will be revealed next.
What is water?
A chemical additive that reduces water, has a main component called a surfactant. It can significantly reduce the amount water needed to make concrete. Using this addition can reduce the cement needed, lower the cost, and improve quality.
What's the purpose of water-reducing agent?
They include, in particular, the following elements
1. This water-reducing ingredient contains a surfactant which can be used to spread cement particles. It will reduce the need for water.
2. Agents that reduce water can have a dispersing effect on the concrete, preventing it from drying out and settling.
3. Reduced water absorption: These substances reduce the number of pores in concrete and improve its durability.
The evolution of water-reducing agent:
The first generation of water-reducing agents
Ordinary water-reducing agent (water reduction ratio)
8%) is also called plasticizer. It is the most important representative of the system of lignosulfonates (sodium-lignosulfonate; calcium-lignosulfonate; magnesium-lignosulfonate). ).
Second generation water-reducing agent
High-Efficiency Water-Reducing Agent (Water Reduction Rate)
The main representative of naphthalene systems, aminosulfonate systems, aliphatic and melamine systems.
Third generation water reducing agents
Water-reducing agent with high performance (water-reduction rate).
This is the most common polycarboxylic acids (water-reducing agents), which can be divided in three categories: Early-strength, Standard, and Slow-Setting.
and , the water-reducing agents , play an important part in concrete. The agent will not only improve the strength and durability, but it will also reduce the concrete required. It is for this reason that water-reducing chemicals are an important chemical component in construction.