Preparation method of concrete early strength agent

Abstract

The invention discloses a preparation method of a concrete early strength agent. The preparation method of the concrete early strength agent is a preparation method of tobermorite hollow nano particles, and the concrete early strength agent is prepared by an inverse-phase emulsion of water-soluble calcium salt and an inverse-phase emulsion of water-soluble silicate through interface reaction based on an Ostwald effect. The early strength agent prepared by adopting the preparation method is outstanding in early strength effect and does not affect the durability of concrete, and the usage amount is small.

Description

[0001] Technical field: [0002] The invention relates to a preparation method of a concrete early strength agent, belonging to the technical field of concrete admixtures. [0003] Background technique: [0004] Concrete is currently the most used building material in the world. It has the main advantages of low price, strong bearing capacity and high durability. However, the early strength of concrete develops slowly, and it usually requires extra manpower and material resources for maintenance. At present, industrial wastes are used as basic raw materials in concrete more and more widely, especially in the production of large prefabricated components, a large number of mineral admixtures such as mineral powder and fly ash are used, and the early strength of concrete develops more slowly , affecting process progress such as mold turnover and prestress loading. [0005] In the current situation of slowing global economic development and increasingly prominent environmental pr...

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Problems solved by technology

[0011] Aiming at the disadvantages of existing early strength agents, such as insufficient early strength effect at the age of several hours to one day, easy to cause decline in concrete durability, and high dosage, the purpo

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