A kind of alkali-free liquid accelerator and preparation method thereof

A technology of quick-setting agent and liquid, which is applied in the field of alkali-free liquid quick-setting agent and its preparation, which can solve the problems of increasing the probability of alkali-aggregate reaction, restricting promotion, and causing disability, so as to improve environmental adaptability and raw material safety The effect of easy availability and small geographical restrictions
CN109896771BActive Publication Date: 2021-03-02山西科晟科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山西科晟科技有限公司
Publication Date
2021-03-02

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Abstract

The invention relates to an alkali-free liquid quick-setting agent, which is prepared by mixing solution A and solution B in proportion. In terms of mass percentage, the raw material components of the prepared solution A include 45-60% aluminum sulfate octadecahydrate, 0.05-1% Sodium fluoride, 2‑5% inorganic coagulation accelerator component, 2‑4% organic early strength agent and 35‑50% water; the raw materials for preparing solution B include 45‑55% octadecahydrate aluminum sulfate, 8‑15% partial Sodium aluminate, 2‑4% organic early strength agent, 3‑6% tackifier and 25‑40% water. The stability of solution A and solution B is good. On-site compounding can adjust the performance of the accelerator. On the one hand, it can overcome the influence of factors such as temperature and cementitious material changes during the construction process, and improve its adaptability to the environment; On the one hand, it can make the accelerator suitable for various types of cement. The raw materials are safe and easy to obtain, easy to transport, and the process is simple and easy to operate.
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Description

technical field

[0001] The invention relates to the technical field of accelerators, in particular to an alkali-free liquid accelerator and a preparation method thereof. Background technique

[0002] Accelerator is an indispensable admixture in shotcrete, which makes the cement cementitious material initially set and harden within a few minutes, and the final setting can be achieved within ten minutes. It is the quick-setting agent that ensures that shotcrete has the properties of quick setting, quick hardening, and early strength, meets the requirements of special construction techniques in engineering construction, and greatly expands the application field of shotcrete. Therefore, the research and development of new high-efficiency accelerators has always been the focus of shotcrete scientific research, and has attracted the attention of concrete researchers at home and abroad.

[0003] According to the properties and states of accelerators, they can be divided into powde...

Claims

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