Preparation method of antibacterial high-performance fiber concrete

Abstract

The invention provides a preparation method of antibacterial high-performance fiber concrete. The preparation method comprises the following steps: step 1, performing material cutting; step 2, carrying out material crushing; step 3, pretreating straw fiber ; step 4, carrying out modification treatment on the straw fiber; step 5, preparing modified polypropylene fiber; step 6, carrying out material preparation; step 7, mixing all the prepared materials; step 8, mixing nano-TiO2, a water reducer and water; step 9, uniformly pouring white uniform liquid into a stirrer, and conducting stirring for 60-90 s to form a hybrid fiber concrete mixture; step 10, carrying out a slump test on the hybrid fiber concrete mixture, and adding the hybrid fiber concrete mixture into a concrete mold; and step 11, putting the mold into a standard curing room with a temperature of 20 + / - 2 DEG C and a relative humidity of 95% or more, and conducting curing for 28 days. The tensile strength, brittleness, impact resistance, wear resistance and other properties of the prepared fiber concrete are obviously improved. Meanwhile, the obvious technical effects of resisting bacteria, being not prone to cracking and the like can be achieved, the service life of the concrete is prolonged, and the human settlement environment, health and safety are improved.

Description

technical field [0001] The invention relates to the technical field of building material preparation, in particular to a method for preparing antibacterial high-performance fiber concrete. Background technique [0002] Concrete has the advantages of abundant raw materials, economical application, simple production process, strong load-bearing capacity, and strong fire resistance, and has become one of the most important materials in civil engineering. A single fiber has great limitations in improving the performance of concrete. At present, from an economic point of view, many developing countries are committed to researching and developing plant fibers as reinforcing materials for cement products, such as straw, jute, sisal, palm, and bamboo. wait. These plant fibers can effectively inhibit the generation and development of shrinkage cracks of cement products, especially for thin-plate cement products, the effect is particularly remarkable. At the same time, scholars at h...

AI Technical Summary

Problems solved by technology

[0004] With the wide application of concrete and the increase of service time, its defects have gradually emerged, mainly for low tensile strength, high brittleness, poor impact and wear resistance, and prone to plastic cracking, etc.

Moreover, the traditional concrete production mode is accompanied by excessive consumption of natural resources and environmental pollution. At the same time, in production and life, bacteria and other microorganisms are widely distributed on the surface and interior of buildings, which directly affects the service life of concrete, human living environment and health. safety, and even make some special-purpose buildings lose their functions, such as water pipelines, swimming pools and agricultural breeding sites, etc.

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