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A kind of permeable concrete and its construction method

A technology of permeable concrete and construction methods, which can be applied to cohesive pavements, roads, gutters/curbs and other directions paved on site, and can solve the problems of low compressive strength of permeable concrete

Active Publication Date: 2021-09-10
湖北华天翼建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low compressive strength of permeable concrete, the application provides a permeable concrete and its construction method

Method used

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  • A kind of permeable concrete and its construction method
  • A kind of permeable concrete and its construction method
  • A kind of permeable concrete and its construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] refer to figure 1 , a construction technique of permeable concrete, comprising the following steps:

[0052] S1: Stir to mix. Transport 15 kg of crushed stone and 4.75 kg of cement in parts by weight to a concrete mixer for mixing and stirring, and keep stirring for 1.5 minutes to form a first mixture. Then, 1.2 kg of water was added to the first mixture, and the addition was divided into three times, with an interval of 10 seconds between each time. After the last water addition was completed, the mixture was continuously stirred and mixed for 5 minutes to form the second mixture. Among them, the cement is Portland cement, and the crushed stone is made of crushed stone with a particle size of 4.75-9.5mm.

[0053] S2: The spread material is vibrated. Pour the second mixture into the mold, and then the staff will spread the second mixture in the mold, and then tamp and level the second mixture in the mold, and control the loosening coefficient within the range of 1.10...

Embodiment 2

[0060] The difference from Example 1 is that in step S3, the mold is removed after the material treated in S2 lasts for 8 days.

[0061] S4: Conservation. The material after S3 treatment was maintained continuously for 30 days; water was sprinkled on the material every day, and the plastic film was immediately covered after watering. After curing, polish and clean the floating slurry on the surface of the material.

[0062] In step S6, each material of component A of polyurea includes 800 parts of polyether polyol, 150 parts of crosslinking agent, 4 parts of defoamer, and plasticizer by weight of each material of component A of polyurea. 45 parts, 4 parts of anti-ultraviolet agent and 4 parts of antioxidant.

[0063] Among them, the polyether polyol is polyoxypropylene glycol, the crosslinking agent is cyclohexane dimethanol, the defoamer is polydimethylsiloxane, the plasticizer is dioctyl terephthalate, and the anti-ultraviolet agent is The UV-531 ultraviolet absorber sold...

Embodiment 3

[0065] A construction technique for permeable concrete, comprising the following steps:

[0066] S1: Stir to mix. Transport 15 kg of crushed stone and 4.75 kg of cement in parts by weight to a concrete mixer for mixing and stirring, and keep stirring for 1.5 minutes to form a first mixture. Then, 1.2 kg of water was added to the first mixture, and the addition was divided into three times, with an interval of 10 seconds between each time. After the last water addition was completed, the mixture was continuously stirred and mixed for 5 minutes to form the second mixture. Among them, the cement is Portland cement, and the crushed stone is made of crushed stone with a particle size of 4.75-9.5mm.

[0067] S2: The spread material is vibrated. Pour the second mixture into the mold, and then the staff will spread the second mixture in the mold, and then tamp and level the second mixture in the mold, and control the loosening coefficient within the range of 1.10-1.15, using plate v...

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Abstract

The application relates to the technical field of concrete, and specifically discloses a permeable concrete and a construction method thereof. The raw materials of the permeable concrete include, in parts by weight: 100-140 parts of water, 1300-1700 parts of gravel, 400-550 parts of cement and 150-300 parts of polyurea. The construction method includes the following steps: S1: stirring and mixing; S2: paving and vibrating; S3: demoulding; S4: curing; S5: coating sealant; S6: rolling coating; Polyurea; After S6 treatment, permeable concrete is obtained. Since the application uses polyurea in the pervious concrete, the compressive strength of the final pervious concrete is enhanced.

Description

technical field [0001] The present application relates to the technical field of concrete, in particular to a permeable concrete and a construction method thereof. Background technique [0002] Permeable concrete is also called porous concrete, sand-free concrete, and permeable floor. It is a kind of porous lightweight concrete made by mixing aggregate, cement, reinforcing agent and water, and does not contain fine aggregate. Permeable concrete consists of a thin layer of cement paste coated on the surface of coarse aggregates to bond with each other to form a honeycomb structure with uniform distribution of pores, so it has the characteristics of air permeability, water permeability and light weight. [0003] In related technologies, pervious concrete has a skeleton-pore structure after subsequent construction. Therefore, compared with normal concrete, although pervious concrete has the function of water and air permeability, its compressive strength decreases. Contents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B41/89E01C7/14E01C7/35E01C11/22
CPCC04B28/04C04B41/52C04B41/89C04B2111/00284E01C7/142E01C7/356E01C11/226C04B14/02C04B41/4884C04B41/4535C04B41/488C04B41/48C04B41/4896
Inventor 章华涂珊赵荣
Owner 湖北华天翼建设工程有限公司
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