阅读说明：本技术 一种控制建筑垃圾肥槽回填沉降的水泥胶囊材料 (Cement capsule material for controlling backfill settlement of construction waste fertilizer tank ) 是由 郭强 王帅 杨冠杰 王健 毛林涛 房海波 刘永涛 于 2021-09-17 设计创作，主要内容包括：本发明公开了一种控制建筑垃圾肥槽回填沉降的水泥胶囊材料,其特征在于：包括水泥胶囊材料和建筑垃圾；所述水泥胶囊材料为内部包裹有水泥砂浆的胶囊,胶囊内水泥砂浆主要成分为32.5水泥、河砂和水,其中32.5水泥：河砂：水的配比为1：5.27：1.16。本发明针对上述状况,以建筑垃圾细料(特别是粒径小于5mm)为主要原材料,添加水泥胶囊这一新材料,以达到自密实的效果,相应的也提出了这一新材料的施工方法。其施工方法包括肥槽清理、建筑垃圾与水泥胶囊配比混合、分层填筑并碾压等步骤。本发明不但提高了建筑垃圾的利用率,而且很好的解决了肥槽回填中不均匀沉降的问题。该项施工工艺简便易行,不需要专门的施工机械设备,工程造价较低,易于推广应用。(The invention discloses a cement capsule material for controlling backfill settlement of a construction waste fertilizer tank, which is characterized by comprising the following components in parts by weight: comprises cement capsule materials and construction wastes; the cement capsule material is a capsule wrapped with cement mortar, the main components of the cement mortar in the capsule are 32.5 cement, river sand and water, wherein the weight ratio of the cement to the cement is 32.5: river sand: the proportion of water is 1: 5.27: 1.16. aiming at the situation, the invention takes construction waste fine materials (particularly the grain diameter is less than 5 mm) as main raw materials, adds the new material of the cement capsule to achieve the self-compacting effect, and correspondingly provides a construction method of the new material. The construction method comprises the steps of cleaning a fertilizer tank, proportionally mixing construction waste and cement capsules, filling layer by layer, rolling and the like. The invention not only improves the utilization rate of the construction waste, but also well solves the problem of uneven settlement in the backfilling of the fertilizer tank. The construction process is simple and easy to implement, does not need special construction mechanical equipment, has low construction cost and is easy to popularize and apply.)

1. The utility model provides a control cement capsule material that construction waste fertilizer groove backfilled and subside which characterized in that: comprises cement capsule materials and construction wastes; the cement capsule material is a capsule wrapped with cement mortar, the main components of the cement mortar in the capsule are 32.5 cement, river sand and water, wherein the weight ratio of the cement to the cement is 32.5: river sand: the proportion of water is 1: 5.27: 1.16.

2. the cement capsule material for controlling the backfill settlement of the construction waste manuring tank as claimed in claim 1, wherein: the construction waste is construction waste fine materials obtained by sorting, crushing and screening the waste concrete after the waste building is dismantled.

3. The cement capsule material for controlling the backfill settlement of the construction waste manuring tank as claimed in claim 2, wherein: in the construction waste fine material, the mass percentage content of particles with the particle size of less than 4.75mm reaches more than 90 percent.

4. The cement capsule material for controlling the backfill settlement of the construction waste manuring tank as claimed in claim 2, wherein: the grading index of the building waste fine materials is determined to be not less than 0.3, and the quality grade is I grade; or the grading index is less than 0.3, and the quality grade is II grade.

5. The cement capsule material for controlling the backfill settlement of the construction waste manuring tank as claimed in claim 4, wherein: the grading index is the ratio of the mass percent passing through a 0.075mm sieve to the cumulative percent rejects of a2.36 mm sieve.

6. The cement capsule material for controlling the backfill settlement of the construction waste manuring tank as claimed in claim 1, wherein: the outer wall of the capsule is made of polyurethane, the capsule is granular or spherical, and the outer side surface of the outer wall of the capsule is of an irregular concave-convex structure.

7. The construction method of the cement capsule material for controlling the backfill settlement of the construction waste manuring tank according to claim 1, which is characterized in that: the construction method comprises the following steps:

step 1: cleaning a fertilizer groove: the fertilizer tank cleaning comprises primary cleaning and deep cleaning, wherein the primary cleaning is to clean a foundation pit, and the deep cleaning is to clean floating soil and garbage on a slope outside the foundation pit;

step 2: determining the filling thickness: determining the thickness of layered filling according to the magnitude of the vibration rolling action force;

and step 3: determining the mixing ratio of the construction waste to the cement capsules: according to the difference of the particle sizes of the construction waste and the cement capsules, the mixing ratio of the construction waste and the cement capsules is determined through tests, so that cement mortar flowing out of the cement capsules after the cement capsules are broken under the action of preset pressure can be bonded with the surrounding construction waste;

and 4, step 4: layering and compacting: repeating the step 3, and carrying out layered rolling compaction until the designed elevation is reached;

and 5: controlling the sedimentation of the backfill material: after the cement mortar is solidified, the backfilled construction waste is integrated so as to control the sedimentation of the backfill material.

8. The construction method of the cement capsule material for controlling the backfill settlement of the construction waste manuring tank according to claim 7, characterized in that: and measuring a foundation pit during the fertilizer tank cleaning step, determining a construction mode and rolling pressure according to measurement data and the shape and size of the foundation pit, and determining the mass ratio of the construction waste to the cement capsules through tests.

9. The construction method of the cement capsule material for controlling the backfill settlement of the construction waste manuring tank according to claim 7, characterized in that: in the determined mixing proportion of the construction waste and the cement capsules, the optimal proportion is that the cement mortar flowing out after the cement capsules are crushed by extrusion can just bond the surrounding construction waste, and the cement capsules which are not crushed by extrusion or extrusion are solidified into capsule balls with higher strength along with the hydration of cement, wherein 100kg of the construction waste and 30kg of the cement capsules are uniformly mixed on site and are rolled and compacted by adopting a flat plate vibration until no settlement occurs.

10. The construction method of the cement capsule material for controlling the backfill settlement of the construction waste manuring tank according to claim 7, characterized in that: and the settlement of the backfill material is controlled by observing after the construction preset time, wherein the surface of the backfill surface at the construction position is intact, and the phenomena of cracking and uneven settlement are not generated.

Technical Field

The invention relates to a material for backfilling a foundation pit by using construction waste and cement capsules and a construction method thereof, which are suitable for backfilling of narrow areas such as bridge abutment backfilling, foundation pit backfilling, pipeline engineering backfilling and the like, in particular to a cement capsule material for controlling backfilling and sedimentation of a construction waste fertilizer tank and a construction method thereof.

Background

Since the advent of concrete, the world industrialization process is continuously accelerated, the gray hardware cannot be developed in modern cities, and the concrete provides convenience for the life of people all the time. However, with the development of human society, concrete also consumes a great amount of natural resources, and has been used as an unrecoverable consumable, which causes a lot of problems in the production and use processes. The ecological environment is irreparably damaged by adopting natural resources such as sand stones and the like, the scale of urban construction and transformation is continuously increased along with the rapid development stage of urbanization in China, a large amount of building waste and construction waste are generated in the process of construction and removal, more than hundreds of millions of tons of construction waste are generated every year, and the construction waste accounts for about 40 percent of the urban waste. The disposal of construction waste has become a major problem and problem in the steady development of urban health. Along with the gradual improvement of environmental protection consciousness of people, the treatment of construction waste gradually draws attention of people.

Meanwhile, in the backfill of the foundation pit of the building engineering, the backfill soil of some parts cannot be effectively compacted. If the urban road subgrade is grooved for backfilling after pipeline laying, backfilling around an inspection well, backfilling of a retaining wall back and a bridge abutment back and the like, because the backfilling space is narrow, large-scale machinery cannot be used for rolling construction, the compactness can hardly reach the design requirement, so that the defects of backfilling deformation, settlement and the like are caused, and effective repair cannot be carried out after the defects are caused.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: 1. a new way for recycling the fine materials of the construction waste is developed, and the problem of low recycling rate of the construction waste is solved; 2. the problems that the construction waste material is not compacted tightly, and settlement and uneven settlement are generated in the later period are solved.

In order to solve the technical problems, the invention adopts the following technical means:

the utility model provides a control cement capsule material that construction waste fertilizer groove backfilled and subside which characterized in that: comprises cement capsule materials and construction wastes; the cement capsule material is a capsule wrapped with cement mortar, the main components of the cement mortar in the capsule are 32.5 cement, river sand and water, wherein the weight ratio of the cement to the cement is 32.5: river sand: the proportion of water is 1: 5.27: 1.16. aiming at the situation, the invention takes construction waste fine materials (particularly the grain diameter is less than 5 mm) as main raw materials, adds the new material of the cement capsule to achieve the self-compacting effect, and correspondingly provides a construction method of the new material.

Preferably, the further technical scheme of the invention is as follows:

the construction waste is construction waste fine materials obtained by sorting, crushing and screening the waste concrete after the waste building is dismantled.

In the construction waste fine material, the mass percentage content of particles with the particle size of less than 4.75mm reaches more than 90 percent.

The grading index of the building waste fine materials is determined to be not less than 0.3, and the quality grade is I grade; or the grading index is less than 0.3, and the quality grade is II grade.

The grading index is the ratio of the mass percent passing through a 0.075mm sieve to the cumulative percent rejects of a2.36 mm sieve.

The outer wall of the capsule is made of polyurethane, the capsule is granular or spherical, and the outer side surface of the outer wall of the capsule is of an irregular concave-convex structure.

A construction method of a cement capsule material for controlling backfill settlement of a construction waste fertilizer tank comprises the following steps:

step 1: cleaning a fertilizer groove: the fertilizer tank cleaning comprises primary cleaning and deep cleaning, wherein the primary cleaning is to clean a foundation pit, and the deep cleaning is to clean floating soil and garbage on a slope outside the foundation pit;

step 2: determining the filling thickness: determining the thickness of layered filling according to the magnitude of the vibration rolling action force;

and step 3: determining the mixing ratio of the construction waste to the cement capsules: according to the difference of the particle sizes of the construction waste and the cement capsules, the mixing ratio of the construction waste and the cement capsules is determined through tests, so that cement mortar flowing out of the cement capsules after the cement capsules are broken under the action of preset pressure can be bonded with the surrounding construction waste;

and 4, step 4: layering and compacting: repeating the step 3, and carrying out layered rolling compaction until the designed elevation is reached;

and 5: controlling the sedimentation of the backfill material: after the cement mortar is solidified, the backfilled construction waste is integrated so as to control the sedimentation of the backfill material.

And measuring a foundation pit during the fertilizer tank cleaning step, determining a construction mode and rolling pressure according to measurement data and the shape and size of the foundation pit, and determining the mass ratio of the construction waste to the cement capsules through tests.

In the determined mixing proportion of the construction waste and the cement capsules, the optimal proportion is that the cement mortar flowing out after the cement capsules are crushed by extrusion can just bond the surrounding construction waste, and the cement capsules which are not crushed by extrusion or extrusion are solidified into capsule balls with higher strength along with the hydration of cement, wherein 100kg of the construction waste and 30kg of the cement capsules are uniformly mixed on site and are rolled and compacted by adopting a flat plate vibration until no settlement occurs.

The settlement of the backfill material is controlled by observing after the construction preset time, the observation period is one year, the surface of the backfill surface at the construction position is intact, and the phenomena of cracking and uneven settlement are not generated.

Compared with the existing backfill material, the invention has the following beneficial effects:

1) economic and environment-friendly: the construction waste is a recycled material, and a new way is opened up for recycling the construction waste. Is economical and environment-friendly.

2) Backfilling the fertilizer tank to control sedimentation: because the cement capsules are added, when the building garbage is vibrated and rolled, part of cement mortar which is cracked and flows out of the cement capsules can bond the building garbage into a whole, the problem that the building garbage is not compacted is solved, and the settlement and the uneven settlement are prevented.

3) Good construction performance, which is the same as the prior construction technology of fertilizer tank backfill without adding special construction technology.

4) The application range is wide, namely fertilizer groove backfilling, backfilling after pipeline laying of urban road subgrade grooving, backfilling around an inspection well, backfilling of a retaining wall back and a bridge abutment back and the like.

The invention relates to a cement capsule material for controlling backfill settlement of a construction waste fertilizer tank and a construction method thereof. The construction waste is waste concrete obtained after the waste construction is dismantled, and the cement capsule is a capsule wrapped with cement mortar. The construction method comprises the steps of cleaning a fertilizer tank, proportionally mixing construction waste and cement capsules, filling layer by layer, rolling and the like. The invention not only improves the utilization rate of the construction waste, but also well solves the problem of uneven settlement in the backfilling of the fertilizer tank. The construction process is simple and easy to implement, does not need special construction mechanical equipment, has low construction cost and is easy to popularize and apply.

Detailed Description

The present invention will be further described with reference to the following examples.

Specific example 1:

the invention relates to a cement capsule material for controlling backfill sedimentation of a construction waste fertilizer tank, wherein construction waste is construction waste fine materials obtained by sorting, crushing and screening waste concrete after dismantling waste buildings, the mass percentage content of particles with the particle size of less than 4.75mm reaches more than 90 percent, and the grading index is determined to be more than or equal to 0.3 according to the grading index of the construction waste fine materials, and the quality grade is I grade; the grading index is less than 0.3, and the quality grade is II grade.

Wherein the grading index is the ratio of the mass passing percentage of the 0.075mm sieve to the cumulative percent of the oversize of the 2.36mm sieve, and is calculated as follows:

C=P_0.075/A_2.36

in the formula, C-grading index

P_0.075Mass percent pass through of 0.075mm sieve

A2.36-2.36mm sieve cumulative percent of rejects

The cement capsule is a capsule wrapped with cement mortar, the cement mortar is composed of 32.5 parts of cement, river sand and water, and the proportion is 1: 5.27: 1.16.

a cement capsule material for controlling backfill settlement of a construction waste fertilizer tank is a particle capsule formed by cement mortar wrapped by a polyurethane capsule wall.

The cement capsule is formed by injecting cement mortar into the wall of the spherical polyurethane capsule and then sealing the polyurethane capsule.

The outer wall of the capsule is a rugged rough surface.

And when the fertilizer tank is backfilled, determining the mass ratio of the construction waste to the cement capsules through tests according to the shape, the size, the construction mode, the rolling pressure and the like of a foundation pit. The optimal proportion is that the cement mortar flowing out after the cement capsules are crushed by extrusion can just bond the surrounding construction waste, and the cement capsules which are not extruded or crushed are solidified into capsule balls with higher strength along with the hydration of cement.

Because the outer wall of the capsule is a rugged rough surface, the cement mortar flowing out after being crushed can provide larger bonding force for the cement capsule which is not crushed.

Specific example 2:

the invention relates to a cement capsule material for controlling backfill settlement of a construction waste fertilizer tank, and a construction method for controlling backfill settlement of the construction waste fertilizer tank by using cement capsules, which comprises the following steps:

1) cleaning a fertilizer groove: cleaning up floating soil and garbage on the foundation pit and the slope outside the pit;

2) determining the thickness of layered filling according to the magnitude of the vibration rolling action force;

3) determining the mixing ratio of the construction waste to the cement capsules: according to the difference of the particle sizes of the construction waste and the cement capsules, the mixing ratio of the construction waste and the cement capsules is determined through tests, so that the cement mortar flowing out of the broken cement capsules under a certain pressure can be bonded with the construction waste adjacent to the cement capsules;

4) after the cement mortar is solidified, the backfilled construction waste becomes a whole, and the sedimentation of the backfill material can be effectively controlled.

Specific example 3:

1) cleaning a fertilizer groove: cleaning up floating soil and garbage on the foundation pit and the slope outside the pit;

2) determining the thickness of layered filling according to the magnitude of the vibration rolling action force;

3) determining the mixing ratio of the construction waste to the cement capsules: 100kg of construction waste and 30kg of cement capsules are uniformly mixed on site, and are rolled and compacted by adopting a flat plate vibration until no settlement occurs;

4) repeating the step 3), and carrying out layered rolling compaction until the designed elevation is reached;

5) after the cement mortar is solidified, the backfilled construction waste becomes a whole, and the sedimentation of the backfill material can be effectively controlled.

6) The construction effect is as follows: after one year of construction, the backfill surface of the construction part is observed to be complete in surface, and phenomena such as cracking, uneven settlement and the like do not occur.

Since the above description is only a specific embodiment of the present invention, but the protection of the present invention is not limited thereto, any equivalent changes or substitutions of the technical features of the present invention which can be conceived by those skilled in the art are included in the protection scope of the present invention.