阅读说明：本技术 一种绿色透水混凝土及制备方法 (Green pervious concrete and preparation method thereof ) 是由 李贵贤 廖芳融 姜泽忠 张岸青 朱明安 银朝辉 于 2021-10-11 设计创作，主要内容包括：本发明属于透水混凝土技术领域,尤其是一种绿色透水混凝土及制备方法,包括基层,所述基层的上表面固定连接有间隔柱层,多个所述间隔柱层在基层的表面均匀分布。该绿色透水混凝土及制备方法,通过设置基层、间隔柱层、透水填料层和透水表层,在使用时,基层具有对整个透水混凝土进行承重加强,并通过间隔柱层和透水填料层配合,增加透水混凝土的结构强度和透水性能,并在透水表层的内部设置纤维骨料混凝土,通过纤维加强骨料与骨料以及骨料与砂之间连接强度、韧性,从而解决了现有的透水混凝土常常出现因雨水冲刷和车辆碾压,造成粗骨料之间分离、脱离和沙化,影响透水混凝土使用效果的问题。(The invention belongs to the technical field of pervious concrete, and particularly relates to green pervious concrete and a preparation method thereof. This green pervious concrete and preparation method, through setting up the basic unit, the interval column layer, the packing layer and the superficial layer permeates water, when using, the basic unit has and carries out the bearing to whole pervious concrete and strengthen, and through interval column layer and the cooperation of packing layer that permeates water, increase pervious concrete's structural strength and water permeability, and set up the fibre aggregate concrete in the inside on the superficial layer that permeates water, strengthen joint strength, toughness between aggregate and sand through the fibre, thereby solved current pervious concrete and often appear because of rainwash and vehicle roll, cause separation between the coarse aggregate, break away from and desertification, influence the problem of pervious concrete result of use.)

1. The utility model provides a green pervious concrete, includes basic unit (1), its characterized in that: the upper surface fixedly connected with interval post layer (2) of basic unit (1), it is a plurality of interval post layer (2) are at the surperficial evenly distributed of basic unit (1), be provided with permeable packing layer (3) between the upper surface of basic unit (1) and the surface of interval post layer (2), the equal fixedly connected with of upper surface of permeable packing layer (3) and interval post layer (2) is superficial layer (4) that permeates water.

2. The green pervious concrete of claim 1, wherein: the inside of basic unit (1) is provided with coarse aggregate concrete, the inside of interval column layer (2) is provided with fine sand concrete, the inside of filler layer (3) that permeates water is provided with the cobblestone and packs, the inside on the top layer (4) that permeates water is provided with the fibre aggregate concrete.

3. The method for preparing green pervious concrete according to any one of claims 1-2, characterized in that: the method comprises the following steps:

step one, paving a base layer (1), namely paving coarse aggregate concrete, and then vibrating and compacting by a vibrator to prepare the base layer (1);

step two, pouring the spacing column layer (2), and pouring fine sand concrete on the surface of the base layer (1) through a template and a binding steel bar to prepare the spacing column layer (2);

step three, filling, namely pouring cobble filling into a cavity between the surface of the base layer (1) and the surface of the spacer column layer (2) to prepare a water permeable filling layer (3);

and fourthly, paving a surface layer, namely paving fiber aggregate concrete on the surfaces of the spacing column layer (2) and the permeable filler layer (3), and vibrating and compacting the fiber aggregate concrete through vibrating equipment.

4. The preparation method of the green pervious concrete according to claim 3, characterized by comprising the following steps: the laying of the base layer (1) in the first step comprises the following steps:

s1, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s2, primary stirring, namely adding the coarse stone aggregate and the cement into a stirrer for primary stirring;

s3, secondary stirring, namely, after the coal cinder and the sand are added after the primary stirring is finished, secondary stirring is carried out;

s4, stirring for the last time, and adding water, the composite early strength agent and the water reducing agent for the last stirring after stirring for the second time;

s5, preparing a base layer (1), paving the coarse aggregate concrete after final stirring to prepare the base layer (1), and vibrating and compacting the base layer (1) through a vibrator.

5. The preparation method of the green pervious concrete according to claim 4, characterized in that: the stirring time in S2 is 150-.

6. The preparation method of the green pervious concrete according to claim 3, characterized by comprising the following steps: the step two, pouring of the spacing column layer (2) comprises the following steps:

s01, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s02, primary stirring, namely adding sand, fine stones and cement into a stirrer for primary stirring;

s03, final stirring, namely, after the initial stirring is finished, adding water, the composite early strength agent and the water reducing agent for final stirring;

and S04, pouring, namely pouring the fine sand concrete after final stirring on the surface of the base layer (1) through a template and a binding steel bar to prepare the spacing column layer (2).

7. The preparation method of the green pervious concrete according to claim 6, characterized in that: the stirring time in the S02 is 150S at 120-150S, the stirring speed is 240 r/min at 200-03, and the stirring speed is 60-90 r/min at 150-180S at S03.

8. The preparation method of the green pervious concrete according to claim 3, characterized by comprising the following steps: the step four is that the permeable surface layer (4) is laid and comprises:

s001, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s002, primarily stirring, namely, placing 24 stones, sand, polyester fiber, activated carbon fiber and ceramic fiber into a stirrer for primary stirring;

s003, secondary stirring, namely adding cement for secondary stirring after primary stirring is finished;

s004, final stirring, namely adding water and a retarder to perform final stirring after secondary stirring is finished;

and S005, paving, namely paving the finally-stirred fiber aggregate concrete on the surfaces of the spacing column layer (2) and the packing layer, and vibrating and compacting the fiber aggregate concrete through a vibrating device.

9. The preparation method of the green pervious concrete according to claim 8, characterized in that: the stirring time in the S002 is 240-.

Technical Field

The invention relates to the technical field of pervious concrete, in particular to green pervious concrete and a preparation method thereof.

Background

Pervious concrete is also called porous concrete, sand-free concrete and pervious terrace. The porous lightweight concrete is prepared by mixing aggregate, cement, reinforcing agent and water, and does not contain fine aggregate.

Most of the existing pervious concrete is a honeycomb structure formed by coating a thin layer of cement paste on the surface of a coarse aggregate and bonding the thin layer of cement paste to form pores uniformly distributed, so that the pervious concrete has the characteristics of air permeability, water permeability and light weight.

Disclosure of Invention

Based on the technical problems that the existing pervious concrete often has separation, separation and desertification among coarse aggregates due to rain wash and vehicle rolling, and the use effect of the pervious concrete is influenced, the invention provides green pervious concrete and a preparation method thereof.

The green pervious concrete comprises a base layer, wherein the upper surface of the base layer is fixedly connected with a plurality of spaced column layers, the spaced column layers are uniformly distributed on the surface of the base layer, a pervious filler layer is arranged between the upper surface of the base layer and the surfaces of the spaced column layers, and the upper surfaces of the pervious filler layer and the spaced column layers are fixedly connected with pervious surface layers.

Preferably, the inside of basic unit is provided with coarse aggregate concrete, the inside of interval column layer is provided with fine sand concrete, the inside of filler layer that permeates water is provided with the cobblestone filler, the inside on superficial layer that permeates water is provided with the fibre aggregate concrete.

Preferably, the preparation method of the green pervious concrete comprises the following steps:

step one, paving a base layer, namely paving coarse aggregate concrete, and then vibrating and compacting by a vibrator to prepare the base layer;

step two, pouring the spacing column layer, pouring fine sand concrete on the surface of the base layer through the template and the binding steel bars, and preparing the spacing column layer;

thirdly, filling, namely pouring cobble filling into a cavity between the surface of the base layer and the surface of the spacing column layer to prepare a water-permeable filling layer;

and fourthly, paving a surface layer, namely paving fiber aggregate concrete on the surfaces of the spacing column layer and the permeable packing layer, and vibrating and compacting the fiber aggregate concrete through vibrating equipment.

Preferably, the step one of laying the base layer comprises:

s1, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s2, primary stirring, namely adding the coarse stone aggregate and the cement into a stirrer for primary stirring;

s3, secondary stirring, namely, after the coal cinder and the sand are added after the primary stirring is finished, secondary stirring is carried out;

s4, stirring for the last time, and adding water, the composite early strength agent and the water reducing agent for the last stirring after stirring for the second time;

and S5, preparing a base layer, namely paving the finally-stirred coarse aggregate concrete to prepare the base layer, and vibrating and compacting the base layer through a vibrator to prepare the base layer.

Preferably, the stirring time in S2 is 150-180S, the stirring speed is 120-200 rpm, the stirring time in S3 is 120-150S, the stirring speed is 300-400 rpm, the stirring time in S4 is 180-240S, and the stirring speed is 80-120 rpm.

Preferably, the step two of pouring the spacer column layer comprises the following steps:

s01, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s02, primary stirring, namely adding sand, fine stones and cement into a stirrer for primary stirring;

s03, final stirring, namely, after the initial stirring is finished, adding water, the composite early strength agent and the water reducing agent for final stirring;

and S04, pouring, namely pouring the fine sand concrete after final stirring on the surface of the base layer through a template and a binding steel bar to prepare the spacing column layer.

Preferably, the stirring time in S02 is 120-150S, the stirring speed is 200-240 rpm, the stirring time in S03 is 150-180S, and the stirring speed is 60-90 rpm.

Preferably, the step four of water permeable surface layer laying comprises:

s001, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s002, primarily stirring, namely, placing 24 stones, sand, polyester fiber, activated carbon fiber and ceramic fiber into a stirrer for primary stirring;

s003, secondary stirring, namely adding cement for secondary stirring after primary stirring is finished;

s004, final stirring, namely adding water and a retarder to perform final stirring after secondary stirring is finished;

and S005, paving, namely paving the fiber aggregate concrete prepared by final stirring on the surfaces of the spacing column layer and the packing layer, and vibrating and compacting the fiber aggregate concrete by using a vibrating device.

Preferably, the stirring time in S002 is 240-.

The beneficial effects of the invention are as follows:

1. through setting up the basic unit, the interval column layer, the packing layer and the top layer that permeates water, when using, the basic unit has and carries out the bearing to whole pervious concrete and strengthen, and through interval column layer and the cooperation of packing layer that permeates water, increase pervious concrete's structural strength and water permeability, and set up the fiber aggregate concrete in the inside on the top layer that permeates water, strengthen joint strength between aggregate and sand through the fiber, toughness, thereby solved current pervious concrete and often appear because of rainwash and vehicle roll, cause separation between the coarse aggregate, break away from and desertification, influence pervious concrete result of use's problem.

2. Through setting up the basic unit, when using, the coarse aggregate concrete that the inside of basic unit set up adopts cinder and sand cooperation, replaces using a large amount of sands, carries out waste utilization to the cinder, not only has the connection performance before increasing the coarse aggregate to compare with the sand, the water permeability of cinder is stronger, thereby reaches green more and the strong effect of water permeability.

3. Through setting up the packing layer that permeates water, when using, the inside cobblestone that sets up of packing layer that permeates water not only has the reduction cement quantity to be convenient for more the construction, and the water permeability is stronger, thereby has the concrete quick construction that permeates water of being convenient for, reduce cost and the green effect of environmental protection.

Drawings

FIG. 1 is a schematic view of a green pervious concrete and a preparation method thereof according to the present invention;

fig. 2 is a perspective view of a base structure of the green pervious concrete and the preparation method thereof.

In the figure: 1. a base layer; 2. a spacer column layer; 3. a permeable packing layer; 4. a water permeable surface layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a green pervious concrete and a preparation method thereof, comprising a base layer 1, wherein the upper surface of the base layer 1 is fixedly connected with a plurality of spaced column layers 2, the plurality of spaced column layers 2 are uniformly distributed on the surface of the base layer 1, a pervious filler layer 3 is arranged between the upper surface of the base layer 1 and the surface of the spaced column layers 2, and the upper surfaces of the pervious filler layer 3 and the spaced column layers 2 are fixedly connected with a pervious surface layer 4;

the inside of basic unit 1 is provided with coarse aggregate concrete, and the inside of interval column layer 2 is provided with fine sand concrete, and the inside of the filler layer 3 that permeates water is provided with the cobblestone and packs, and the inside of the top layer 4 that permeates water is provided with the fibre aggregate concrete.

A preparation method of green pervious concrete comprises the following steps of firstly, paving a base layer 1, and after paving coarse aggregate concrete, vibrating and compacting by a vibrator to prepare the base layer 1;

the laying of the base layer 1 in the first step comprises the following steps:

s1, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s2, primary stirring, namely adding the coarse stone aggregate and the cement into a stirrer for primary stirring;

s3, secondary stirring, namely, after the coal cinder and the sand are added after the primary stirring is finished, secondary stirring is carried out;

s4, stirring for the last time, and adding water, the composite early strength agent and the water reducing agent for the last stirring after stirring for the second time;

s5, preparing a base layer 1, paving the finally-stirred coarse aggregate concrete to prepare the base layer 1, and vibrating and compacting the base layer 1 through a vibrator to prepare the base layer 1;

preferably, the stirring time in S2 is 150-.

Further, the composite early strength agent has the effects of accelerating the setting time of coarse aggregate concrete in the base layer 1, improving the construction efficiency of laying the base layer 1 and reducing the construction cost of laying the base layer 1.

Furthermore, the coal slag is added, so that the content of sand in the concrete is reduced, the water permeability of the concrete is increased, waste utilization is carried out on the coal slag, and the effect of being more green and environment-friendly is achieved.

Through setting up basic unit 1, when using, the coarse aggregate concrete that basic unit 1's inside set up adopts cinder and sand cooperation, replaces using sand in a large number, carries out waste utilization to the cinder, not only has the connection performance before increasing the coarse aggregate to compare with sand, the water permeability of cinder is stronger, thereby reaches green more and the strong effect of water permeability.

Step two, pouring the spacing column layer 2, pouring fine sand concrete on the surface of the base layer 1 through a template and binding steel bars, and preparing the spacing column layer 2;

step two, pouring the spacing column layer 2 comprises the following steps:

s01, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s02, primary stirring, namely adding sand, fine stones and cement into a stirrer for primary stirring;

s03, final stirring, namely, after the initial stirring is finished, adding water, the composite early strength agent and the water reducing agent for final stirring;

s04, pouring, namely pouring the fine sand concrete after final stirring on the surface of the base layer 1 through a template and a binding steel bar to prepare a spacing column layer 2;

preferably, the stirring time in S02 is 120-150S, the stirring speed is 200-240 r/min, the stirring time in S03 is 150-180S, and the stirring speed is 60-90 r/min.

Furthermore, the spacing column layer 2 has the effects of increasing the overall structural strength of the concrete and increasing the water permeability of the concrete;

the preferred, when the in-service use, interval column layer 2 can also adopt prefabricated preparation to be convenient for lay out fast, save time raises the efficiency, and has the effect that receives the weather temperature influence minimum when laying out.

Step three, filling, namely pouring cobble filling into a cavity between the surface of the base layer 1 and the surface of the spacing column layer 2 to prepare a permeable filling layer 3;

preferably, the spacer column layer 2 is in latticed distribution on the surface of the base layer 1, so that the permeable packing layer 3 is convenient to fix and limit, and the effect of increasing the structural strength of the whole concrete is achieved.

Furthermore, the cobblestones arranged inside the permeable packing layer 3 have the effects of increasing the water permeability of the whole concrete, having good strength performance, being cheap in materials and reducing the manufacturing cost of the permeable concrete.

Through setting up the packing layer 3 that permeates water, when using, 3 inside cobblestones that set up of packing layer that permeate water not only have the reduction cement quantity to be convenient for more construct, and the water permeability is stronger, thereby have the concrete of being convenient for permeate water and construct fast, reduce cost and the green effect of environmental protection.

Furthermore, the cobblestones are arranged in the permeable packing layer 3, so that the cement consumption in the preparation of the permeable concrete is reduced, and the effect of more environmental protection is achieved.

Fourthly, paving a surface layer, namely paving fiber aggregate concrete on the surfaces of the spacing column layer 2 and the permeable filler layer 3, and vibrating and compacting the fiber aggregate concrete through vibration equipment;

the step four is that the permeable surface layer 4 is laid and comprises:

s001, preparing raw materials, wherein the raw materials comprise the following raw materials in parts by weight:

s002, primarily stirring, namely, placing 24 stones, sand, polyester fiber, activated carbon fiber and ceramic fiber into a stirrer for primary stirring;

s003, secondary stirring, namely adding cement for secondary stirring after primary stirring is finished;

s004, final stirring, namely adding water and a retarder to perform final stirring after secondary stirring is finished;

s005, paving, namely paving the finally-stirred fiber aggregate concrete on the surfaces of the spacing column layer 2 and the packing layer, and vibrating and compacting the fiber aggregate concrete through a vibrating device;

furthermore, the polyester fibers, the activated carbon fibers and the ceramic fibers are arranged to increase the connection strength among the 24 stone aggregates, the sand and the cement, so that the 24 aggregates, the sand and the cement are prevented from being separated and desertified due to rain wash in the use process, and the service life of the pervious concrete is prolonged.

Preferably, the stirring time in S002 is 240-.

Preferably, in actual use, a reinforcing mesh can be laid on the surface of the water-permeable filler layer 3, so that the structural strength of the water-permeable surface layer 4 is increased, and good water permeability is maintained.

Furthermore, the retarder has the effect of prolonging the setting time of the fiber aggregate concrete, so that the permeable surface layer 4 is vibrated and compressed and then is solidified when the construction is convenient, and the permeable surface layer 4 is convenient to pave and construct.

Through setting up basic unit 1, interval column layer 2, the packing layer 3 and the top layer 4 that permeates water permeate water, when using, basic unit 1 has and carries out the bearing to whole pervious concrete and strengthen, and through interval column layer 2 and the cooperation of packing layer 3 that permeates water, increase the structural strength and the water permeability of pervious concrete, and set up the fibre aggregate concrete in the inside on top layer 4 that permeates water, strengthen joint strength between aggregate and sand through the fibre, toughness, thereby solved current pervious concrete and often appear because of rainwash and vehicle roll, cause the separation between the coarse aggregate, break away from and desertification, influence the problem of pervious concrete result of use.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.