Concrete retarder

Abstract

The invention relates to a concrete retarder, which comprises the following components: 15-20 parts of sucrose, 10-25 parts of glucose, 9-16 parts of phosphoric acid, 5-14 parts of disodium phosphate, 3-7 parts of trisodium phosphate, 6-9 parts of disodium hydrogen phosphate, 8-20 parts of sodium pyrophosphate, 9-15 parts of alkyl phosphate, 3-7 parts of disodium ethylenediamine tetraacetate, 2-9 parts of humic acid, 5-11 parts of sodium fluosilicate, 8-13 parts of methylene phosphate derivatives, 5-12 parts of calcium sodium ethylenediamine tetramethylidene phosphate, 4-9 parts of dimethylamine, 8-17 parts of formaldehyde, 6-14 parts of phosphorous acid, and 4-12 parts of a mixture of boric acid, sodium bicarbonate and tartaric acid according to the ratio of 3 to 5 to 2.

Description

technical field [0001] The invention belongs to the field of paint additives and relates to a concrete retarder. Background technique [0002] Generally speaking, retarders mostly have a strong active effect on the surface of cement particles and hydrate new phases, and are adsorbed on the surface of solid particles, delaying the formation of cement and slurry structures. These effects will slow down the hydration rate of cement and prolong the setting time of cement. When the concrete hydrates, it will release a lot of heat. When the temperature is high in summer, the temperature of some products will reach 80 degrees. When the temperature of the products is too high, the products produced will no longer be 5.1.8 phases, but very unstable 9.1 phases. .5 phase, and the strength is not high. When the temperature is too high, the products produced will have problems such as back halogen, deformation, and low strength. Contents of the invention [0003] The technica...

AI Technical Summary

Problems solved by technology

These effects will slow down the hydration rate of cement and prolong the setting time of cement.

When the concrete hydrates, it will release a lot of heat. When the temperature is high in summer, the temperature of some products will reach 80 degrees. When the temperature of the products is too high, the products produced will no longer be 5.1.8 phases, but very unstable 9.1 phases. .5 phase, and the strength is not high. When the temperature is too high, the products produced will have problems such as back halogen, deformation, and low strength.