Water-absorbent and breathable square bricks

Abstract

The present invention discloses a water-absorbing and breathable square brick. The raw materials include: construction waste, white clay, carbon, cement, silica fume, fly ash, sand, and water. The square brick has excellent water absorption properties, absorbing most rainwater within the brick body, effectively preventing water accumulation in road cracks. The square brick uses discarded sintered bricks as aggregate, which improves the brick's strength and water absorption and permeability.

Description

Technical Field

[0001] The invention relates to the technical field of building materials, in particular to a water-absorbing and breathable square brick. Background Art

[0002] At present, there are a large number of abandoned brick and tile houses in my country's towns and villages, and a large amount of brick and tile construction waste is generated before and after the collapse and production. These construction wastes are difficult to dispose of. If they are simply landfilled or piled in the open air, they will cause great pollution to the environment. At present, there is a lack of a method for the utilization of waste bricks to solve the current dilemma of difficult brick and tile waste disposal.

[0003] Square bricks are wear-resistant bricks used for paving roads. They are generally wear-resistant, anti-skid, and have high hardness. They are widely used in various public places and road paving. However, due to material reasons, the cement-based square bricks currently on the market, while having good wear resistance and hardness, have low water absorption and permeability. After rain, rainwater often accumulates on the road surface or between the bricks, causing obstruction and inconvenience to pedestrians. Therefore, how to produce a square brick product with good water absorption and permeability, high strength, low cost, and the ability to recycle waste has become a pressing problem. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a water-absorbing and breathable square brick to at least achieve the effects of anti-slip, good water absorption performance and low cost.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] The utility model relates to a water-absorbing and breathable square brick, the raw materials of which include: construction waste residue, white mud, carbon monoxide, cement, silica fume, fly ash, sand and water.

[0007] Furthermore, the raw materials include, by weight: 25-30 parts of construction waste, 10-15 parts of white clay, 1-2 parts of mono-carbonate, 2-4 parts of cement, 10-15 parts of silica fume, 6-8 parts of fly ash, 20-25 parts of sand and 5-10 parts of water.

[0008] Furthermore, the construction waste residue is broken sintered bricks with a particle size of 2-5 mm.

[0009] Furthermore, the particle size of the white mud is 0.08-0.1 mm.

[0010] Furthermore, the particle size of the independent carbon is 0.1-0.12 mm.

[0011] Furthermore, the cement is composite Portland cement.

[0012] Furthermore, the sand is the sand in the second zone.

[0013] The method for preparing the square bricks comprises the following steps:

[0014] S1: Mix white clay, carbon fiber, cement, silica fume, sand and fly ash evenly;

[0015] S2: adding construction waste residue and water to the material obtained in step S1 and stirring evenly;

[0016] S3: pouring the material obtained in step S2 into a flat mold, demoulding and calcining the material after solidification.

[0017] Furthermore, the calcination temperature is 1200-1250°C.

[0018] Furthermore, the calcination time is 5-6 hours.

[0019] It is worth noting that Baishan mud is a kind of clay unique to Yingjing County. It is usually used in combination with Dulian carbon to prepare black sandware. This kind of sandware has good water permeability and air permeability after firing. By controlling the particle size and dosage of Baishan mud and Dulian carbon, the water absorption and water permeability of the material can be controlled. The present invention uses Baishan mud as a binder to replace cement to prepare a clay-based square brick with water absorption and air permeability similar to Yingjing sandware. When it rains, the bricks will quickly absorb and penetrate rainwater to prevent rainwater from accumulating on the surface. When the weather is clear, as the surface temperature is high, the rainwater absorbed in the brick body is evaporated again. The present invention also adds broken sintered bricks as aggregate, which on the one hand improves the strength of the clay-based square bricks, and on the other hand, because the sintered bricks have a rough and porous internal structure, the water absorption capacity and anti-slip ability of the brick body can be further improved.

[0020] The beneficial effects of the present invention are:

[0021] 1. The square bricks of the present invention have good water absorption and permeability, which effectively solves the problem of water accumulation on the surface of square bricks on rainy days.

[0022] 2. The square bricks of the present invention use less cement and use waste brick slag as aggregate, which has low raw material cost and is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The following are photos of the vehicle passing test results of the square bricks of the present invention and ordinary square bricks in Experimental Example 1. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in further detail below, but the protection scope of the present invention is not limited to the following.

[0025] Example 1

[0026] Prepare a water-absorbing and breathable square brick. The specific operations are as follows:

[0027] Mix 1.5 kg of sieved white clay (180 mesh), 0.2 kg of independent carbon (150 mesh), 0.3 kg of P.C42.5 composite silicate cement, 1 kg of silica fume, 0.6 kg of fly ash and 2 kg of medium sand from the second zone, and stir for 3 minutes to obtain a mixed slurry. Take the discarded sintered brick material and crush it to control the particle size to 2-5 mm. Add 2.5 kg of crushed brick slag to the above mixed slurry and mix evenly, then add 1 kg of water, stir for 5 minutes, and then pour it into a 300*600*25 mm square brick flat mold, pour and vibrate. After the bricks in the mold solidify, demould and fire them in an electric kiln, control the temperature to 1250 ° C, calcine for 5 hours, and then take them out and cool.

[0028] Example 2

[0029] Prepare a water-absorbing and breathable square brick. The specific operations are as follows:

[0030] Mix 1.2 kg of sieved white clay (180 mesh), 0.1 kg of independent carbon (150 mesh), 0.4 kg of P.C42.5 composite silicate cement, 1.5 kg of silica fume, 0.8 kg of fly ash and 2.5 kg of medium sand in the second zone, and stir for 3 minutes to obtain a mixed slurry. Take the discarded sintered brick material and crush it to control the particle size to 2-5 mm. Add 3 kg of crushed brick slag to the above mixed slurry and mix evenly, then add 1 kg of water, stir for 5 minutes, and then pour it into a 300*600*25 mm square brick flat mold, pour and vibrate. After the bricks in the mold solidify, demould and fire them in an electric kiln, control the temperature to 1200 ° C, calcine for 6 hours, and then take them out and cool.

[0031] Comparative Example

[0032] Prepare a square brick, the specific operation is as follows:

[0033] Mix 2kg of P.C42.5 composite silicate cement, 1.5kg of silica fume, 0.8kg of fly ash and 2.5kg of medium sand from zone 2, and stir for 3 minutes to obtain a mixed slurry. Take the discarded sintered brick material and crush it to control the particle size to 2-5mm. Add 3kg of crushed brick slag to the above mixed slurry and mix evenly, then add 1kg of water and stir for 5 minutes, then pour it into a 300*600*25mm square brick flat mold, pour and vibrate. After the bricks in the mold solidify, demould and fire them in an electric kiln, control the temperature to 1200℃, calcine for 6 hours, and then take them out and cool them.

[0034] Experimental example

[0035] According to the method of JB / T 25993-2010, the water absorption and water permeability of the square bricks of Examples 1-2, the comparative example, and commercially available ordinary square bricks (purchased from Chengdu Jindinghong Co., Ltd.) were tested using a water permeability meter. The experimental data are as follows:

[0036] Water absorption (%) Permeability coefficient (mm / s) Example 1 11.92 4.5 Example 2 12.73 4.8 Comparative Example 4.41 1.1 Ordinary square bricks 8.49 2.7

[0037] The square bricks of Example 1-2 and ordinary square bricks on the market were tested by vehicles. Specifically, the bricks were placed on a concrete surface and a car was run over them. The test results are shown in the attached figure. Figure 1 Ordinary square bricks break after a vehicle passes through them once in the horizontal direction, while the square bricks of the present invention do not break after a vehicle passes through them twice in the horizontal direction and twice in the vertical direction.

[0038] The above experiments prove that the square bricks of the present invention have good water absorption and permeability as well as compression and flexural strength.

[0039] The foregoing description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the appended claims.

Claims

1. A water-absorbing and breathable square brick, characterized in that: The raw materials include, by weight: 25-30 parts of construction waste, 10-15 parts of white clay, 1-2 parts of carbonized carbon, 2-4 parts of cement, 10-15 parts of silica fume, 8-10 parts of fly ash, 20-25 parts of sand and 5-10 parts of water; Wherein, the particle size of the white mud is 0.08-0.1mm; The particle size of the independent carbon is 0.1-0.12 mm.

2. The square brick according to claim 1, characterized in that: The construction waste residue is broken sintered bricks with a particle size of 2-5 mm.

3. The square brick according to claim 1, characterized in that: The cement is composite Portland cement.

4. The square brick according to claim 1, characterized in that: The sand is the medium sand in zone 2.

5. The method for preparing square bricks according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: Mix white clay, carbon fiber, cement, silica fume, sand and fly ash evenly; S2: adding construction waste and water to the material obtained in step S1 and stirring evenly; S3: pouring the material obtained in step S2 into a flat mold, demoulding and calcining the material after solidification.

6. The preparation method according to claim 5, characterized in that: The calcination temperature is 1200-1250°C.

7. The preparation method according to claim 5, characterized in that: The calcination time is 5-6 hours.

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