A kind of high-strength cement-based composite photocatalytic material and preparation method thereof

Abstract

A high-strength cement-based composite photocatalytic material and a preparation method thereof belong to the field of environmental protection building materials, in particular to a high-strength cement-based composite photocatalytic material and a preparation method thereof. The purpose of the present invention is to provide a kind of photocatalytic material for pavement and building wall, when applied to pavement, not only can catalyze the harmful gas in haze weather, but also can catalyze the harmful gas discharged from automobile exhaust in fine weather . The photocatalytic material is made from graphite tailings, sand, cement, fly ash, silica fume and water. Graphite tailings, sand, cement, fly ash and silica fume were used as raw materials for dry stirring for 2 minutes, and then water was added to continue stirring and mixing to obtain a mixture. The mixture was put into the mold and vibrated. After 24 hours, the mold was removed and the standard curing treatment was carried out. , a high-strength cement-based composite photocatalytic material was obtained. The material prepared by the invention is used for pavement and building wall.

Description

technical field [0001] The invention belongs to the field of environment-friendly building materials, and in particular relates to a high-strength cement-based composite photocatalytic material and a preparation method thereof. Background technique [0002] In recent years, the air quality index of many cities has "exploded", with heavy smog and poor visibility, which not only brings inconvenience to people's lives, but also brings great harm to people's health. The massive discharge of nitrogen oxides and sulfur oxides is one of the main causes of haze weather. [0003] Graphite is an important industrial mineral raw material and plays an important role in various industries. my country is rich in graphite resources, and its reserves account for more than 70% of the global reserves. The distribution of my country's graphite resources is highly concentrated, mainly in Heilongjiang, Inner Mongolia, Sichuan, Shanxi, Shandong and other provinces, of which the graphite reserves...

AI Technical Summary

Problems solved by technology

The tailings have good water permeability and air permeability, the water is easily evaporated, the ability to retain water and fertilizer is low, and the nutrients are extremely poor

At the same time, due to the influence of fluoride, inorganic salt, washing oil and other chemical substances added in the washing process and the composition of the parent ore, the content of heavy metals in graphite tailings is high, and the pollutants seriously exceed the standard.

So far, the vast majority of graphite tailings have not been utilized, and the research on the comprehensive utilization of graphite tailings is still in its infancy. The utilization efficiency is not high, sufficient, and comprehensive enough to meet the urgent needs of urgent treatment.

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