Composite plastic-retaining grinding aid for cement and use method

Abstract

The invention relates to a composite plastic-retaining grinding aid for cement and a manufacturing method. The composite plastic-retaining grinding aid is prepared by following steps of: compounding a grinding aid and a concrete retarder according to a certain proportion, and then, diluting the compounded product of the grinding aid and the concrete retarder to a certain concentration with water. When the composite plastic-retaining grinding aid for cement is adopted in the process of the grinding operation of cement production, the aim of assisting grinding is achieved, meanwhile, the concrete prepared from the cement doped with the composite plastic-retaining grinding aid has a favorable plastic-retaining effect and reduced age losses and meets requirements of projects. The composite plastic-retaining grinding aid has favorable technical economic benefits and social benefits.

Description

technical field [0001] The invention relates to a production method of a cement grinding aid. Background technique [0002] In the prior art, in order to increase the strength during cement production, the technology of adding grinding aids is adopted in cement production. While the fineness, specific surface area and strength of cement are improved, the performance of cement is also changed, so that the fluidity of cement is reduced. , when the concrete is prepared, the fluidity of the concrete is greatly reduced, especially the slump loss of the concrete is very large (the concept of "loss over time" is used in concrete technology); in addition, some cement production enterprises use power plants. Desulfurization gypsum replaces dihydrate gypsum. Due to its complex and unstable composition, the prepared concrete often loses a lot over time, which is difficult to meet the construction requirements of concrete projects. Therefore, it is often used to add concrete retarding w...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in order to increase the strength during cement production, the technology of adding grinding aids is adopted in cement production. While the fineness, specific surface area and strength of cement are improved, the performance of cement is also changed, so that the fluidity of cement is reduced. , when the concrete is prepared, the fluidity of the concrete is greatly reduced, especially the slump loss of the concrete is very large (the concept of "loss over time" is used in concrete technology); in addition, some cement production enterprises use power plants. Desulfurization gypsum replaces dihydrate gypsum. Due to its complex and unstable composition, the prepared concrete often loses a lot over time, which is difficult to meet the construction requirements of concrete projects. Therefore, it is often used to add concrete retarding when mixing concrete. The above two methods are technical measures commonly used in the cement industry and ready-mixed concrete industry

After inquiry, there is no report on the composite grinding aid material that has both the grinding aid function for cement and the plastic retaining function for the prepared concrete.