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Alkali slag concrete composite activator and preparation method of concrete mixture

A compound excitation and concrete technology, which is applied in the field of compound excitation agent and preparation of alkali slag concrete mixture, can solve the problems of complex production process and increased cost

Active Publication Date: 2016-10-26
张彭成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a new composite activator used in alkali slag concrete, which solves the technical defects and the need to slow down the complex production process caused by the need for sodium hydroxide to be dissolved in advance and cooled before use. coagulant thus increasing the cost of deficiencies

Method used

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  • Alkali slag concrete composite activator and preparation method of concrete mixture

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Embodiment 1

[0030]Embodiment 1, a kind of composite activator applied in alkali slag concrete, described composite activator is formed by mixing sodium carbonate and solid sodium hydroxide, wherein, the equivalent ratio of sodium carbonate and sodium hydroxide is 80 parts: 20 parts; said solid sodium hydroxide refers to the solid sodium hydroxide that exists in solid form in the preparation of alkali slag concrete mixture, directly mixes with powder materials and does not contact with water before sodium carbonate; Described sodium carbonate is sodium carbonate containing crystal water.

[0031] The preparation method of the above-mentioned composite activator applied in alkali slag concrete comprises the following steps,

[0032] The first step is to prepare the raw materials. The raw materials are an appropriate amount of aggregate and silicon-aluminum oxide as the main chemical composition, which has pozzolanic activity and has a specific surface area of ​​200 square meters per kilogra...

Embodiment 2

[0037] Embodiment 2 A composite activator applied in alkali slag concrete, the composite activator is formed by mixing sodium carbonate and solid sodium hydroxide, wherein the equivalent ratio of sodium carbonate and sodium hydroxide is 50 parts: 50 part; said solid sodium hydroxide refers to the solid sodium hydroxide that exists in solid form in the preparation of alkali slag concrete mixture, is directly mixed with powder materials and is not in contact with water before sodium carbonate; Sodium carbonate is sodium carbonate containing crystal water.

[0038] The preparation method of the above-mentioned composite activator applied in alkali slag concrete comprises the following steps,

[0039] The first step is to prepare the raw material, which is an appropriate amount of aggregate, which is obtained through high-temperature treatment or high-temperature processing stage, with silicon-aluminum oxide as the main chemical composition and pozzolanic activity, with a specific...

Embodiment 3

[0044] Embodiment 3, a kind of composite activator applied in alkali slag concrete, described composite activator is formed by mixing sodium carbonate and solid sodium hydroxide, wherein, the equivalent ratio of sodium carbonate and sodium hydroxide is 60 parts: 40 parts; said solid sodium hydroxide refers to the solid sodium hydroxide that exists in solid form in the preparation of alkali slag concrete mixture, is directly mixed with powder materials and is not in contact with water before sodium carbonate; Described sodium carbonate is sodium carbonate containing crystal water.

[0045] The preparation method of the above-mentioned composite activator applied in alkali slag concrete comprises the following steps,

[0046] The first step is to prepare the raw material, which is an appropriate amount of aggregate, which is obtained through high-temperature treatment or high-temperature processing stage, with silicon-aluminum oxide as the main chemical composition and pozzolani...

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Abstract

The invention relates to an alkali slag concrete composite activator and a preparation method of a concrete mixture. The composite activator in alkali slag concrete is made by mixing solid sodium hydroxide with a composition of one or two of solid alkali metal carbonate and alkali metal bicarbonate; the preparation method of the mixture includes the following steps: first, preparing activated powdery material, the composite activator and mixing water material; second, mixing materials of solid components; third, after adding all the solid components, adding mixing water and stirring; by using the composite activator and the preparation method thereof according to the technical scheme, it is possible to overcome the technical defect that sodium hydroxide in alkali slag concrete is currently dissolved sodium hydroxide so that the production process has a complex flow; the solid activator need not be dissolved and cooled first, the production process is simplified, production cost is reduced, the applicable range is wide, and there is no need for additive retarders.

Description

technical field [0001] The invention relates to the formulation of an alkali slag concrete activator and the technical field of production of alkali slag concrete, in particular to a composite activator mainly composed of solid sodium hydroxide and sodium carbonate and the direct use of a solid activator to prepare alkali slag concrete Mixture method. Background technique [0002] Alkali slag concrete is a new type of environmentally friendly concrete; alkali slag concrete uses finely ground slag powder with pozzolanic activity, fly ash, ground slag, ground calcined coal gangue, calcined metakaolin, etc. as raw materials, and sodium hydroxide , Sodium carbonate, water glass and other alkaline substances are alkali-activated gelling materials composed of activators. In actual engineering, sodium hydroxide or water glass is often used as the activator; this is mainly due to the fact that sodium hydroxide is easier to purchase, transport and store; The construction performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/10C04B28/08C04B28/02C04B103/22
CPCC04B28/02C04B28/021C04B28/08C04B28/082C04B28/087C04B40/0039C04B2103/22C04B22/10C04B22/062C04B14/00C04B18/0409
Inventor 张彭成杨长辉王新陈科黄刚王勇威江敏刘亚文肖兵
Owner 张彭成
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