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Efficient photocatalysis cement-based material and application method thereof

A cement-based material and photocatalytic technology, which is applied in the field of building materials, can solve the problems of domestic waste pollution and difficulty in landfill, and achieve the effects of saving land resources, increasing light transmission, environmental protection and economic benefits

Inactive Publication Date: 2018-09-28
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency photocatalytic cement-based material for the purpose of degrading nitrogen oxides in the air, and at the same time improving environmental problems such as serious pollution of construction waste and domestic waste and difficulty in landfill disposal;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045]The cement used in the embodiment of the present invention is ordinary Portland cement, the sand is natural medium sand with a fineness modulus of 2.3 to 3.0, the mineral admixture is secondary fly ash and slag powder provided by a certain factory, and the waste glass is a certain Recycled from landfills, waste red bricks are recycled from a demolition site near the campus, glass fiber, polycarboxylate water reducer (water reducing rate greater than 30%), and dispersant (sodium lauryl sulfate) are commercially available .

[0046] Preparation of waste glass sand: The recovered waste glass is manually crushed with an iron hammer, and then secondary crushed with a ball mill, and the crushed waste glass powder is screened with a standard sieve, and the particle size distribution is selected to be 0.35mm-4.25mm. Examples use waste glass sand. Soak the waste glass sand in water for 1 hour, wash it, boil it in water for 1 hour, rinse it to remove surface impurities, put it in...

Embodiment 2

[0050] This embodiment describes in detail a method of making an environmentally friendly exterior wall panel:

[0051] Step 1 Weighing and mixing: Weigh the raw materials according to the mass ratio shown in Example 1 and mix them in a concrete mixer for 2 to 3 minutes, then add water and mix for 3 to 5 minutes to make the material self-leveling;

[0052] Step 2 Pouring the mold: pour the high-efficiency photocatalytic cement-based material into the mold at one time, so that it is evenly distributed in the mold, and the size of the mold is 1500×250×15mm;

[0053] Step 3 Vibration forming: place the mold after pouring on the vibrating table and vibrate for 1-2 minutes, so that the gas in the material can escape completely and the finish is smooth;

[0054] Step 4 Curing: Put the poured and vibrated mold in a standard curing room for 24 hours, then remove the mold, put the formed exterior wall panels in water at 40°C for 2 days, and then put them in water at 90°C for 2 days.

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Abstract

The invention provides an efficient photocatalysis cement-based material and an application method thereof. The material is prepared from, by mass, 20-35% of cement, 15-20% of mineral additives, 30-45% of waste glass sand, 5-10% of red brick sand composite photocatalyst, 20-30% of natural sand, 0.2-1.0% of efficient water reducer and 2-5% of glass fiber. An environment-friendly external wall panelis formed by pouring the cement-based material, red brick sand loaded nano titanium dioxide is adopted, the problem that nanometer materials are likely to be gathered and likely to be recycled is avoided, and building garbage is effectively secondarily utilized; waste red brick sand granules are used for preparing the red brick sand composite photocatalyst, due to the porous performance and the glass light transmitting performance of the red brick body, the porosity and light transmittance can be improved, the photocatalytic effect is better achieved, the identical photocatalytic effect is achieved while the consumption of nanometer materials is decreased, and economic benefits are achieved while environment-friendly benefits are achieved.

Description

technical field [0001] The invention relates to a cement-based material and an application method thereof, in particular to a high-efficiency photocatalytic cement-based material and an application method thereof, belonging to the field of building materials. Background technique [0002] With the rapid development of my country's industrial level, automobiles have become an indispensable means of transportation for people's daily life. At the same time, people's demand for fuel has also increased exponentially. Oxides not only have higher emissions, but also are more harmful. Therefore, the NO in automobile exhaust X Purification and governance are imminent. In recent years, nano-titanium dioxide has been used in the construction field to degrade nitrogen oxides in the environment to solve air quality problems such as smog. However, due to the fact that nano-materials are easy to agglomerate and affect the photocatalytic efficiency, and the production cost is high, it is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00017C04B18/08C04B18/141C04B18/16C04B2103/10C04B14/068C04B24/24C04B14/42C04B18/146C04B2103/302
Inventor 毛继泽陈亚南纪映旭韩天一吕建福周思嘉李明森
Owner HARBIN ENG UNIV