阅读说明：本技术 一种竹骨料混凝土低碳节能降噪轻质透水砖 (Low-carbon energy-saving noise-reducing light water permeable brick made of bamboo aggregate concrete ) 是由 孙学光 黄挺 孙君海 朱旭东 李治均 张理娟 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种竹骨料混凝土低碳节能降噪轻质透水砖,所述的透水砖由竹骨料和水泥砂浆组成,其组分包括硅酸盐水泥18.2～29.3份、改性处理的竹骨料25.2～40.1份、中砂13.5～20.8份、重组外加剂0.5～1.5份、中性水10～20份。本发明的透水砖具有以下特点：抗冻抗压与耐腐蚀性能强,多孔性材料竹骨料环保可再生,透水砖内部孔隙率高,有效解决了地面积水的问题,具有超强的透水性能,同时也能降低路面噪声3～5分贝,另外由于竹骨料替代了传统的石骨料,在同等尺寸下比普通混凝土砖轻30％～40％,相比同类产品,价格低廉。竹骨料混凝土低碳节能降噪轻质透水砖可广泛应用于非机动车道路、停车场、景区、园林、人行道等。(The invention discloses a bamboo aggregate concrete low-carbon energy-saving noise-reducing lightweight water permeable brick which is composed of bamboo aggregates and cement mortar, and the components of the water permeable brick comprise 18.2-29.3 parts of portland cement, 25.2-40.1 parts of modified bamboo aggregates, 13.5-20.8 parts of medium sand, 0.5-1.5 parts of recombinant additives and 10-20 parts of neutral water. The water permeable brick of the invention has the following characteristics: the anti-freezing, pressure-resistant and corrosion-resistant brick has the advantages that the anti-freezing, pressure-resistant and corrosion-resistant performances are strong, the porous bamboo aggregate is environment-friendly and renewable, the internal porosity of the water permeable brick is high, the problem of surface water accumulation is effectively solved, the water permeable brick has super-strong water permeability, and meanwhile, the pavement noise can be reduced by 3-5 decibels, in addition, the bamboo aggregate replaces the traditional stone aggregate, and the concrete brick is 30-40% lighter than the common concrete brick under the same size, and is lower in price compared with similar products. The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick can be widely applied to non-motor vehicle roads, parking lots, scenic spots, gardens, sidewalks and the like.)

1. The utility model provides a bamboo aggregate concrete low carbon energy-saving noise reduction light permeable brick which characterized in that: the water permeable brick comprises the following components in parts by mass:

25.2-40.1 parts of bamboo aggregate

18.2 to 29.3 portions of Portland cement

13.5-20.8 parts of medium sand

0.5 to 1.5 parts of recombinant additive

10-20 parts of neutral water.

2. The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick according to claim 1, characterized in that: the bamboo aggregate is bamboo particles with the length of 10-20 mm, the width of 2-10 mm and the thickness of 1-5 mm.

3. The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick according to claim 2, characterized in that: the bamboo aggregate is obtained by boiling bamboo particles in water and then carrying out modification treatment on the bamboo particles by using sodium hydroxide and silica sol.

4. The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick according to claim 1, characterized in that: the medium sand has a particle size of 0.45-0.35 mm.

5. The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick according to claim 1, characterized in that: the recombinant admixture is a high-performance polycarboxylate water reducer and a pervious concrete reinforcing agent, and the weight ratio of the high-performance polycarboxylate water reducer to the pervious concrete reinforcing agent is 1: 1.5-2.5 by mass ratio.

6. The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick according to claim 1, characterized in that: the water permeable brick is prepared by stirring the components in proportion, feeding the components into a mold, maintaining, demolding and maintaining again.

Technical Field

The invention belongs to the field of water permeable bricks, and particularly relates to a low-carbon, energy-saving and noise-reducing light water permeable brick made of bamboo aggregate concrete.

Background

Along with the population increase, the environment worsens, and carbon emission is high, and water resource, energy are deficient, and parking area, non-motor road, scenic spot, gardens, pavement etc. most are all laid by impervious materials such as granite, glazed tile, cement and asphalt, and full ground ponding makes people's trip more inconvenient when raining, causes vegetation to lack of water, water waste etc. simultaneously.

The main raw materials of the water permeable materials such as the water permeable bricks and the water permeable pavements in the current market adopt non-renewable mineral resources such as ceramics or concrete, a large amount of energy needs to be consumed in the processes of raw material mining and water permeable brick forming and sintering, a large amount of carbon dioxide is discharged, the environmental protection property is poor, the realization of carbon peak carbon neutralization targets is not facilitated, meanwhile, the water filtration performance is poor, and the noise reduction effect is poor.

Disclosure of Invention

The invention aims to provide a bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick which has the advantages of good water permeability, compression resistance, corrosion resistance, sound absorption, noise reduction, energy conservation, environmental protection, light weight, convenience in construction and the like. Therefore, the invention adopts the following technical scheme:

the bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick is composed of bamboo aggregates, cement mortar and a recombinant additive. The surface of the water permeable brick is sprayed with coatings with various colors, and the water permeable brick can be designed into various patterns to play a role in beautifying the city.

The water permeable brick comprises, by mass, 18.2-29.3 parts of portland cement, 25.2-40.1 parts of bamboo aggregate, 13.5-20.8 parts of medium sand, 0.5-1.5 parts of a recombinant additive and 10-20 parts of neutral water.

The bamboo aggregate is obtained by boiling bamboo particles in water and then treating the bamboo particles with sodium hydroxide and silica sol solution. The treatment refers to soaking and stirring.

Further, the bamboo particles obtained by cutting moso bamboos are boiled, washed with water for 1-2 times, soaked in a sodium hydroxide solution with the mass concentration of 0.5-4% for 60-120 minutes, washed for 2-3 times, dried, stirred and placed with silica sol according to the mass ratio of 2-5: 1 for 1-2 hours, and then dried to obtain the bamboo aggregate.

The bamboo aggregate is granular, and the particle size is as follows: the length is 10-20 mm, the width is 2-10 mm, and the thickness is 1-5 mm. And the surface has a plurality of pores, and has good sound absorption effect.

Furthermore, after the bamboo aggregate is subjected to the modification treatment, the interface compatibility of the bamboo aggregate and the cement matrix material is greatly improved, so that the bamboo aggregate and the cement mortar can be effectively bonded into a whole, and good porosity and strong water permeability can be ensured. The permeable brick is prepared by stirring bamboo aggregate, a recombined additive and cement mortar (silicate cement, medium sand and neutral water), molding, curing, demolding and curing again. The recombinant admixture is a high-performance polycarboxylate water reducer and a pervious concrete reinforcing agent, and the weight ratio of the high-performance polycarboxylate water reducer to the pervious concrete reinforcing agent is 1: 1.5-2.5 by mass ratio.

Bamboo, as a fast-growing plant rich in China, has numerous microscopic pores and good mechanical properties, but has poor affinity with cement mortar, poor corrosion resistance and the like. Therefore, the bamboo bone material prepared by the invention is as follows: firstly, crushing bamboos into a size specification with higher bonding degree with cement mortar, then optimizing the bonding strength and corrosion resistance with the cement mortar, enhancing the affinity through surface roughness and polarity modification, adjusting the proportion of bamboo aggregate and the cement mortar, and if too much cement mortar exists, blocking the pores of the bamboo aggregate and the gaps between the bamboo aggregate and the cement mortar, and damaging the water permeability and the noise reduction performance of the bamboo aggregate; if the cement mortar is too little, the bamboo aggregate concrete permeable brick is difficult to form. The bamboo aggregate is combined with cement mortar to form the bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick with good porosity, excellent sound absorption effect and superior water filtration performance.

The invention has the beneficial effects that:

1. the modified bamboo aggregate is utilized to reduce carbon dioxide discharged by bamboo as a combustion material, and meanwhile, the bamboo aggregate concrete permeable brick is formed at one time without high-temperature sintering, so that a large amount of energy is saved, and the national carbon peak reaching goal is favorably realized; bamboo as a raw material is a fast-growing renewable plant, can replace partial non-renewable resources such as cement, broken stones and the like, and promotes the sustainable development of national economy. Because the bamboo aggregate is adopted to replace the traditional stone aggregate, the permeable brick of the invention is lighter than the common concrete brick by 30-40% under the same size.

2. The bamboo aggregate concrete permeable brick prepared by mixing the bamboo aggregate modified by the specific modification process with cement mortar has good frost resistance and compression resistance. The bamboo aggregate concrete water permeable brick has excellent water permeability, sound absorption, noise reduction and environmental protection by utilizing the inner gap between the bamboo aggregate and the cement mortar and the microporous structure of the bamboo aggregate.

3. The method is applied to sponge cities, can greatly relieve the problems of urban waterlogging and drainage, maintains the balance of the ecological environment of the cities, creates natural and living environments with higher quality, can enable rainwater to quickly permeate the earth surface, supplements water and underground water in soil, can improve the living conditions of plants in various cities, and enriches microorganisms in the soil; the urban microclimate can be adjusted, the urban heat island effect can be greatly relieved, the flood control and drainage pressure of each city can be relieved, the road accumulated water is reduced, and the water pollution of public water areas is reduced; make things convenient for city resident's the business trip, the brick that permeates water can prevent the road surface reflection of light and absorb the noise of walking vehicle (can reduce road surface noise 3 ~ 5 decibels) because bamboo aggregate concrete self porosity surface, can effectively improve the travelling comfort.

Detailed Description

The bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick provided by the invention has the advantages of good water permeability, compression resistance, corrosion resistance, sound absorption, noise reduction, energy conservation, environmental protection, light weight, convenience in construction and the like, and can be widely applied to scenes such as non-motor vehicle roads, parking lots, scenic spots, gardens, sidewalks and the like.

The technical scheme of the invention is further explained by combining the specific examples as follows:

example 1

A bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick comprises the following raw material components: 28.5 parts of Portland cement, 26.4 parts of modified bamboo aggregate, 14.3 parts of medium sand, 1.5 parts of recombinant additive and 11 parts of neutral water, and the modified bamboo aggregate is prepared by stirring, molding, curing, demolding and curing again, and then the surface is sprayed with green pigment. The water permeability coefficient and the sound absorption coefficient of the low-carbon energy-saving noise-reducing light water permeable brick made of bamboo aggregate concrete are shown in table 1.

Table 1 water permeability coefficient and sound absorption coefficient of the bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick of example 1

Example 2

A bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick comprises the following raw material components: 28.5 parts of Portland cement, 40 parts of modified bamboo aggregate, 14.3 parts of medium sand, 1.5 parts of recombinant additive and 11 parts of neutral water, and the modified bamboo aggregate is prepared by stirring, molding, curing, demolding and curing again, and then the surface is sprayed with green pigment. The water permeability coefficient and the sound absorption coefficient of the low-carbon energy-saving noise-reducing light water permeable brick made of bamboo aggregate concrete are shown in table 2.

Table 2 permeability coefficient and sound absorption coefficient of the low-carbon, energy-saving and noise-reducing light permeable brick made of bamboo aggregate concrete of example 2

Example 3

A bamboo aggregate concrete low-carbon energy-saving noise-reducing light permeable brick comprises the following raw material components: 28.5 parts of Portland cement, 26.4 parts of modified bamboo aggregate, 20.8 parts of medium sand, 1.5 parts of recombinant additive and 11 parts of neutral water, and the modified bamboo aggregate is prepared by stirring, molding, curing, demolding and curing again, and then the surface is sprayed with green pigment. The water permeability coefficient and the sound absorption coefficient of the low-carbon energy-saving noise-reducing light water permeable brick made of bamboo aggregate concrete are shown in table 3.

Table 3 water permeability coefficient and sound absorption coefficient of the low-carbon, energy-saving and noise-reducing light water permeable brick made of bamboo aggregate concrete of example 3

The above technical solutions are preferred embodiments, and are not intended to limit the technical solutions of the present invention, and it should be understood that modifications made by those skilled in the art without departing from the present invention shall fall within the protection scope of the present invention.