Citric Acid

Product Description

Citric acid is an organic acid, which plays the role of retarding coagulation, anti-freezing, and water retention in concrete. Its main function principle is to react with calcium hydroxide in concrete to generate insoluble calcium citrate, absorb water, and delay the hardening time of concrete, so that concrete has better processability and fluidity.

BUFFER CONCENTRATE, PHOSPHATE/SODIUM HYDROXIDEBORIC ACID-POTASSIUM CHLORIDE-SODIUM HYDROXIDE BUFFERBUFFER CONCENTRATE, PH 8.00BUFFER CONCENTRATE, PH 7.00BETZ 0623BUFFER CONCENTRATE, PH 9.00BUFFER CONCENTRATE, POTASSIUM CHLORIDE/SODIUM HYDROXIDEBETZ 6251EINECS 201-069-13'-hydroxybiphenyl-3-carboxylic aci

Application

As a concrete admixture, the use of citric acid in concrete can bring the following benefits.

1. Retarding effect

By using the appropriate amount of citric acid as a retarder, the hardening time of concrete can be delayed, and the concrete can avoid the loss of fluidity and processability due to premature hardening. Specifically, the appropriate control of the amount of citric acid can make the concrete maintain a long flow time during the construction process, which is easy for the construction personnel to process and adjust.

2. Anti-freezing effect

The moisture adsorbed on the surface of concrete is easy to freeze under the influence of low temperature, which affects the strength and durability of concrete, and even leads to the destruction of concrete. In the winter construction process, citric acid can be used as an anti-freezing admixture, which helps to reduce the surface moisture of the concrete, thus ensuring the strength and durability of the concrete.

3. Water retention effect

During the construction of concrete, moisture volatilization will lead to the loss of plasticity and fluidity, and sometimes even lead to cracking. Proper control of the amount of citric acid can improve the water retention of concrete, to ensure that concrete has good working performance.

4. Reduce cracks

There is a risk that concrete will crack after hardening. Citric acid can enhance the cracking resistance of concrete. Adding the proper amount of citric acid in concrete can make calcium ions fully dispersed, and inhibit the reaction of calcium ions with hydrated silicate in concrete, to slow down the cracking inside concrete.

Third, use the method

When using citric acid as a concrete admixture, appropriate citric acid type, use method, and dosage control should be selected. In general, it is recommended to use citric acid with a concentration of 30% to 50%, and the amount is generally controlled between 0.1% and 0.3% of the total weight of concrete. The specific dosage should be reasonably adjusted according to the construction environment, concrete material performance, and other factors. In the process of use, it is necessary to follow the operating procedures to ensure that the advantages of citric acid are maximized.

The acidic properties of citric acid can be used as flavoring agents, daily chemicals, preservatives, and so on.

Citric acid can also inhibit the coagulation of calcium in the blood, which can soften blood vessels and prevent arteriosclerosis. Moderate consumption of citric acid is not harmful, but long-term consumption of canned, jam, and other processed foods makes it easy to make the body too much citric acid, thereby speeding up the body's discharge of calcium, easily causing hypocalcemia.

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