1. What is the water reducing rate of water reducing agent?

The water-reducing rate of a water-reducing agent is an important parameter. The water-reducing rate is directly related to its performance. Generally speaking, When the slump of the concrete is basically the same, the difference between the unit water consumption of concrete without water-reducing agent and the tested concrete mixed with water-reducing agent and the ratio of the unit water consumption of concrete without water-reducing agent is the reduction of water-reducing agent.

2. What should the water reducing rate of water reducing agent be greater than?

There are certain standard requirements for the water-reducing rate of water-reducing agents. Only those that meet the requirements are qualified water-reducing agents.

According to the requirements of the national standard "Concrete Admixtures" (GB 8076-2008), water-reducing agents are divided into three types: ordinary water-reducing agents, high-efficiency water-reducing agents and high-performance water-reducing agents. The water-reducing rate of ordinary water-reducing agents should be More than 8%, the water reduction rate of high-efficiency water-reducing agent should be greater than 14%, and the water-reduction rate of high-performance water-reducing agent should be greater than 25%.

3. Test method for water reducing rate of water reducing agent?

The water reduction rate of the water-reducing agent is expressed by the ratio of the difference in the unit water consumption of the concrete containing the water-reducing agent and the benchmark concrete to the unit water consumption of the benchmark concrete, and is calculated by the following formula:

WR=m0-m1/m0×100%

In the formula, WR is the water reduction rate, m0 is the unit water consumption of the standard concrete, and m1 is the unit water consumption of the concrete mixed with water-reducing agent.