Preparation method of basalt fiber anti-crack cement with low hydration heat

By adding basalt fibers and special inhibitors to the cement preparation, the problem of concrete cracks caused by excessive hydration heat of ordinary silicate cement is solved, and the preparation of low-hydration heat-resistant cracking cement is realized, the performance and durability of concrete are improved, and the development of green building materials is promoted.

CN119683882AInactive Publication Date: 2025-03-25YINGDE RUNFENG NEW MATERIAL TECH CO LTD +1
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Patent Information

Application Number
CN202411909605.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-24
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Ordinary silicate cement will produce excessive hydration heat during application, resulting in more cracks in the concrete, affecting the safety and durability of the project. At the same time, the inhibitors on the market have poor calorific value stability and high cost, which is not conducive to large-scale concrete applications.

Method used

The preparation method of low-hydration thermal basalt fiber crack-resistant cement is adopted. By selecting ordinary silicate cement clinker, gypsum, fly ash, ore powder, basalt staple fibers and special inhibitors (made from xylitol and sodium gluconate), after multiple grinding and screening, the low-hydration thermal crack-resistant cement is finally prepared.

Benefits of technology

It reduces the crack rate of concrete, improves the performance and service life of concrete, reduces the amount of clinker, and realizes the development of green building materials. It has the significance of saving natural resources and environmental protection.

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Abstract

The invention provides a preparation method of low-hydration-heat basalt fiber anti-crack cement, and relates to the technical field of cement, the preparation method is as follows: raw materials are selected, mixed, ground and screened, and then an inhibitor and basalt short fibers are added to complete the preparation of the cement, and the inhibitor is independently developed and has the advantages of effectively reducing the mixing temperature of concrete and improving the water resistance of the concrete. According to the low-hydration-heat anti-crack cement and the preparation method thereof disclosed by the invention, an ordinary Portland cement clinker material is taken as a basis, an environment-friendly admixture material is added to produce low-heat high-performance cement, and on the basis, a special inhibitor and basalt fibers are matched to produce the low-hydration-heat anti-crack cement, so that the crack rate of the concrete is reduced; on the basis of guaranteeing and improving the performance of the concrete and prolonging the service life, proper reduction of the use amount of the clinker is an important way for realizing development of green building materials, and has positive significance in resource utilization and environment protection.
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