What is the role and mechanism of water
On construction sites or in home improvements, we see concrete being used a lot. It is important to add a water-reducing additive to concrete. What are the functions and mechanisms of this additive, and why is it necessary to add water-reducing agents to concrete? 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 required to make concrete. Using this addition can reduce the cement needed, lower the cost, and improve quality.
What's the purpose of the water-reducing agent?
They include, in particular, the following elements
1. This water-reducing additive 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 water inside 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 rate)
Also called plasticizer (also known as lignosulfonate), it is the most important representative of the system of lignosulfonates (sodium, calcium, and magnesium lignosulfonate). ).
Second generation water-reducing agents
Water reduction agent of high efficacy (water-reduction rate).
The main representative of melamine systems, aminosulfonate systems, and the aliphatic system.
Third generation water reducing agents
Water-reducing agent with high performance (water-reduction rate).
This is the most common polycarboxylic acids (water-reducing agent), which can be divided in three categories: Early-strength Type, Standard Type, and Slow-Setting Type.
and , the water-reducing agents , play a major role in concrete. The agent will not only improve the durability and strength, but it will also reduce the concrete required. It is for this reason that water-reducing chemicals are essential in the construction industry.