CN111335097A

CN111335097A - Sponge city permeable brick mixed rock wool and paving method thereof

Info

Publication number: CN111335097A
Application number: CN202010205239.8A
Authority: CN
Inventors: 林广成; 林铭昭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-06-26

Abstract

A sponge city permeable brick mixed rock wool and a paving method thereof. The sponge city permeable brick blended rock wool is formed by blending and combining hexagonal columnar permeable bricks and hexagonal columnar rock wool for paving. The permeable brick is formed by wrapping a thin layer of cement slurry on the surface of coarse aggregate and mutually bonding, and has holes with uniformly distributed honeycomb structures. The column shape has high breaking strength, the hexagonal splicing pavement is stable in overall structure, and the compression resistance is strong. The rock wool has high strength, high water absorption and retention rate and long water retention time, and can release accumulated water into the surrounding environment and air in the drought period under the condition of no need of external force. The water permeable bricks and the rock wool are spliced and paved, the water permeability is high, and rainwater can permeate into the honeycomb holes and the porous fiber holes to be accumulated; the excess water can be quickly discharged through the holes and the fiber pores, and then flows into the ground through the filtration of the sand filter layer and the crushed stone base layer, so that the underground water is effectively supplemented, the rainwater can freely migrate in the city, and the water seepage and water purification performance is realized.

Description

Sponge city permeable brick mixed rock wool and paving method thereof

Technical Field

The invention relates to the technical field of sponge city construction engineering, and mainly relates to sponge city water permeable brick mixed rock wool and a paving method thereof.

Background

According to the technical guidance of sponge city construction published by the urban and rural construction department of housing, in the novel urbanization construction process of various regions, the low-influence development construction mode is popularized and applied, the rigid constraint of urban runoff rainwater source emission reduction is increased, a natural drainage system is preferentially utilized, ecological drainage facilities are built, the absorption, storage, seepage and slow-release effects of rainwater on urban greenbelts, roads, water systems and the like are fully exerted, the hydrological characteristics after urban development and construction are close to those before development, urban waterlogging is effectively relieved, urban runoff pollution load is reduced, water resources are saved, the urban ecological environment is protected and improved, and important guarantee is provided for building a sponge city with natural storage, natural seepage and natural purification functions. The central town chemical industry working meeting confirms that the construction of a 'sponge city' with natural accumulation, natural infiltration and natural purification is greatly promoted, namely the city can have good 'elasticity' in the aspects of adapting to environmental change, coping with natural disasters and the like a sponge, measures such as 'infiltration, stagnation, storage, purification, use, discharge' and the like are taken, water is absorbed, stored, infiltrated and purified when raining, the stored water is 'released' and utilized when needed, the urban ecological system function is improved, and the urban flood disasters are reduced. The construction of sponge cities becomes an important way for improving the urban value and realizing the ecological civilization and beautiful Chinese construction.

Disclosure of Invention

In view of the above background demands, the present invention provides a sponge city permeable brick mixed rock wool and a paving method thereof. The paving method of the permeable brick blended rock wool has the functions of absorbing water, storing water, permeating water and purifying water when raining, and releasing and utilizing the stored water when needed, is widely applied to urban roads, districts, squares, parking lots and other areas, not only improves the grade of urban construction, reduces the maintenance and management of road surfaces, but also can naturally adjust the humidity of air and environment according to environmental changes, effectively relieves the urban heat island effect, and has good economic and ecological benefits.

The invention discloses sponge city permeable brick mixed rock wool, which is formed by mixing columnar permeable bricks and columnar rock wool.

The columnar water permeable bricks are formed by selecting coarse aggregates with the particle diameter of 5-15 mm, wrapping a thin layer of cement paste on the surfaces of the coarse aggregates, and bonding the coarse aggregates with one another, and have honeycomb structural holes which are uniformly distributed, so that the columnar water permeable bricks have the characteristics of water permeability, air permeability and water retention. The aggregate is mixed with cement paste by a stirrer to wrap the surface, and poured into a mould to form the columnar water permeable brick with the cross section in a geometric shape. And the consistency of the cement paste is adjusted to ensure that the cement paste can be uniformly wrapped on the aggregates, so that the cement paste is prevented from being separated out from the surfaces of the aggregates to block pores between the aggregates and flowing into the bottom to form a waterproof layer after the mixture of the aggregates and the cement paste is poured into a mould. The gaps of the holes of the columnar water permeable bricks are large, the water permeability is greater than that of sandy soil, and the water permeability coefficient is greater than 20 mm/s; compared with the permeable brick in the prior art, the columnar appearance ensures that the permeable brick has higher anti-bending capability.

The coarse aggregate is 5-15 mm aggregate which is formed by crushing and processing stone or secondary waste stone, ceramic tiles and ceramic ware.

Preferably, the cross section of the columnar water permeable brick is hexagonal, so that the spliced and paved structure is more stable, and the compression resistance is improved.

The columnar rock wool is long columnar rock wool with a cross section in a geometric shape formed by pressing. Rock wool is an inorganic porous fiber made of natural rock through high-temperature melting and fiberization, and then is processed and pressed into a columnar body with a cross section in a geometric shape. The rock wool has small volume weight (30-40 kg/m)²) High water absorption (60-70 kg/m rain water absorption)²) The load bearing is high (4-10 tons/square), the water retention rate is high (the porosity is more than 90%), the pores are large, excessive water can penetrate through the fiber pores to be discharged, the water permeability is equivalent to that of sandy soil, and the permeability coefficient reaches 8.5 mm/s. The columnar rock wool can hold water for a long time, and can release accumulated water into the surrounding environment and air in a drought period without external force, thereby playing a role in naturally regulating the environment and the air humidity. The performance of the soil-friendly fertilizer is close to that of soil, and the soil-friendly fertilizer is nontoxic and cannot be corroded or generate mildew and bacteria.

The columnar rock wool is of a whole 1-section or 2-section structure, the upper half section of the 2-section structure is a water permeable brick, and the lower half section of the 2-section structure is rock wool.

Preferably, the cross section of the columnar rock wool is hexagonal.

The invention also discloses a method for paving the rock wool formed by splicing the sponge city water permeable bricks in a mixed mode, wherein the method comprises the following steps:

the method comprises the following steps:

the raw materials of the water permeable brick are prepared according to the formula: 350-550 parts of coarse aggregate, 100 parts of cement, 2-10 parts of an additive and 20-50 parts of water; uniformly mixing the prepared water permeable brick raw materials by a stirrer, and uniformly wrapping cement paste on the surface of aggregate to form a thin layer; pouring the uniformly mixed raw materials into a long columnar mold with a geometric shape of a cross section, lightly shaking and paving, standing and maintaining for 5-7 days, demolding, spraying a sealing agent on the surface, and standing and maintaining for 28 days to the maximum strength to obtain the columnar water permeable brick with uniformly distributed honeycomb-shaped structural holes.

Step two:

the porous fiber rock wool is processed and pressed to prepare long column rock wool with the same shape, specification and size as the blended column permeable brick.

Step three:

when splicing and paving, paving a graded broken stone base layer with the thickness of 100-300 mm, and compacting; laying a sand filter layer with the thickness of 10-50 mm, and flattening; the columnar water permeable bricks and the columnar rock wool are mixed and paved on the sand filter layer.

Preferably, 1 hexagonal columnar rock wool and 6 hexagonal columnar water permeable bricks are spliced and paved, and 1 hexagonal water permeable brick is spliced on each of 6 surfaces of the hexagonal columnar rock wool; the hexagonal columnar water permeable bricks are paved in a combined manner, so that the structure is stable, and the compressive strength is high; the hexagonal columnar rock wool is spliced in the centers of the 6 hexagonal columnar water permeable bricks to absorb rainwater flowing out of the water permeable bricks and release water to the water permeable bricks during drought.

The invention has the beneficial effects

The invention discloses sponge city permeable brick mixed rock wool and a paving method thereof. The sponge city permeable brick blended rock wool is formed by blending columnar permeable bricks and columnar rock wool. The columnar water permeable brick is formed by wrapping a thin layer of cement slurry on the surface of coarse aggregate and mutually bonding, and has honeycomb structural holes which are uniformly distributed, so that the columnar water permeable brick has the characteristics of water permeability, air permeability and water retention; the column design flexural strength is high, and hexagonal concatenation is paved overall structure and is stable, and crushing resistance is strong. The columnar rock wool is high in strength, high in water absorption and water retention rate and long in water retention time, accumulated water can be released to the surrounding environment and air in the drought period under the condition that external force is not needed, and the effect of naturally adjusting the environment and the air humidity is achieved. The columnar water permeable bricks and the columnar rock wool are spliced and paved, the water permeability is high, and rainwater can permeate into the honeycomb holes and the porous fiber pores to be accumulated; the excess water can be quickly discharged through the holes and the fiber pores, and then flows into the ground through the filtration of the sand filter layer and the crushed stone base layer, so that the underground water is effectively supplemented, the rainwater can freely migrate in the city, and the water seepage and water purification performance is realized. The permeable bricks and the rock wool can release the accumulated water into the surrounding environment and air in the arid period, so as to play a role in naturally adjusting the environment and the air humidity, effectively relieve the urban heat island effect and ensure that the urban pavement does not heat any more. The implementation of the invention realizes the requirements of natural storage, natural penetration and natural purification of 'sponge cities', has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like, has the measures of 'seepage, stagnation, storage, purification, use, discharge' and the like, absorbs water, stores water, seeps water and purifies water when raining, releases and utilizes the stored water when needed, relieves the pressure of urban inland inundation, promotes the functions of urban ecological systems and reduces the occurrence of urban flood disasters. In addition, the coarse aggregate is 5-15 mm aggregate formed by crushing and processing stone or secondary waste stone, ceramic tiles and ceramic ware, and the recycled stone and ceramic industry is solid waste, so that waste is changed into valuable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:

FIG. 1 shows a structure diagram of rock wool blended with water permeable bricks in a sponge city and paving thereof;

fig. 2, 2 section type column rock wool structure chart

Detailed Description

The invention provides sponge city water permeable brick mixed rock wool and a paving method thereof. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example for implementation one

In the embodiment, the sponge city permeable brick blended rock wool is formed by blending and paving columnar permeable bricks 1 and columnar rock wool 2.

In the embodiment, the raw materials of the water permeable brick are prepared according to the formula: 450 parts of coarse aggregate, 100 parts of cement, 3 parts of admixture and 36 parts of water.

In this example, the coarse aggregate is obtained by crushing secondary waste marble with a crusher, and has a particle size of 10 to 13 mm.

In the embodiment, the prepared water permeable brick raw materials are uniformly mixed by a stirrer, and cement paste is uniformly coated on the surface of aggregate and is a thin layer; pouring the uniformly mixed raw materials into a hexagonal mold with the inner distance of 100mm and the length of 200mm, lightly shaking and paving, standing and maintaining for 5 days, demolding, spraying a sealing agent on the surface, and standing for 28 days to the maximum strength to obtain the hexagonal columnar water permeable brick with the inner distance of 100mm and the length of 200 mm.

In this example, porous fiber rock wool was processed and pressed to produce hexagonal columnar rock wool having an inner distance of 100mm and a length of 150 mm.

In this example, the above-mentioned steps of preparing the water permeable bricks were repeated to prepare hexagonal water permeable bricks having an inner distance of 100mm and a length of 50 mm.

In this example, a graded crushed stone base course 3 having a thickness of 250mm is laid on the compacted raw soil and compacted.

In this example, a 40mm thick sand filter layer 4 was laid on the crushed stone base layer and flattened.

In this example, 1 hexagonal rock wool and 6 hexagonal water permeable bricks are mixed and paved on the sand filter layer, and 1 hexagonal water permeable brick is respectively spliced on each of six faces of the hexagonal rock wool.

In this example, the hexagonal columnar rock wool is assembled in 2 sections, and the lower half section is hexagonal porous fiber rock wool with the inner distance of 100mm and the length of 150 mm; the upper half section is a hexagonal water permeable brick with the inner distance of 100mm and the length of 50 mm.

The sponge city permeable brick mixed rock wool and the paving method thereof can be applied to parking lots.

Example II

In the embodiment, the raw materials of the water permeable brick are prepared according to the formula: 380 parts of coarse aggregate, 100 parts of cement, 2.7 parts of additive and 30 parts of water.

In the embodiment, the coarse aggregate is prepared by crushing secondary waste porcelain by a crusher, and the particle diameter of the aggregate is 5-8 mm.

In the embodiment, the prepared water permeable brick raw materials are uniformly mixed by a stirrer, and cement paste is uniformly coated on the surface of aggregate and is a thin layer; pouring the uniformly mixed raw materials into a hexagonal mold with the inner distance of 50mm and the length of 100mm, lightly shaking and paving, standing and maintaining for 5 days, demolding, spraying a sealing agent on the surface, standing for 28 days to the maximum strength, and preparing the hexagonal columnar water permeable brick with the inner distance of 50mm and the length of 100 mm.

In this example, the porous rock wool is processed and pressed to form hexagonal columnar rock wool with an internal distance of 50mm and a length of 100 mm.

In this example, a graded broken stone base course with a thickness of 150mm is laid on the compacted raw soil.

In this example, a sand filtration layer with a thickness of 20mm was laid on the crushed stone base layer and flattened.

The sponge city permeable brick mixed rock wool and the paving method thereof can be applied to sidewalks.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims

1. The sponge city permeable brick blended rock wool and the paving method thereof are characterized in that the sponge city permeable brick blended rock wool is formed by blending columnar permeable bricks and columnar rock wool.

2. The sponge city water permeable brick blended rock wool according to claim 1, wherein the columnar water permeable brick is made of coarse aggregate with a particle diameter of 5-15 mm, the surface of the coarse aggregate is wrapped with a thin layer of cement slurry, the coarse aggregate is bonded with the thin layer of cement slurry, holes with a honeycomb structure are uniformly distributed, and the cross section of the columnar water permeable brick is in a geometric shape.

3. The sponge city permeable brick-mixed rock wool according to claim 2, wherein the coarse aggregate is formed by crushing and processing stone or secondary waste stone, ceramic tiles and ceramic ware.

4. The sponge city water permeable brick-parquet rock wool according to claim 1 or 2, wherein the cross section of the columnar water permeable brick is hexagonal.

5. The sponge city permeable brick blended rock wool according to claim 1, wherein the columnar rock wool is a long column with a cross section of geometric shape formed by pressing porous fiber rock wool, and the shape, specification and size of the columnar rock wool are the same as those of the blended permeable brick.

6. The sponge city permeable brick mixed rock wool according to claim 1 or 5, wherein the columnar rock wool is of a whole 1-segment or 2-segment structure; 2, the upper half section is a permeable brick, and the lower half section is rock wool.

7. The sponge city permeable brick assorted rock wool according to claim 1 or 5, wherein the cross section of the columnar rock wool is hexagonal.

8. Any one of the sponge city permeable brick assorted rock wool according to the claims 1 to 7, wherein the paving method further comprises the following steps:

the method comprises the following steps:

Step two:

Step three:

9. The method for paving the sponge city water permeable brick blended rock wool according to claim 8, wherein preferably, 1 hexagonal columnar rock wool and 6 hexagonal columnar water permeable bricks are blended and paved, and 1 hexagonal columnar water permeable brick is respectively spliced on six faces of the hexagonal columnar rock wool.