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Porous concrete prepared from waste road concrete aggregate and preparation process

A technology for waste concrete and porous concrete, applied in the field of concrete, can solve the problems of low strength of porous concrete, can not reach porous concrete, affect normal use, etc., and achieve the effect of changing the pH value, increasing the strength, and improving the pH value.

Inactive Publication Date: 2014-07-30
宋金博
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when waste concrete is used as the aggregate of porous concrete, there are often problems of low aggregate strength and high water absorption. Direct use will lead to problems such as low strength and large shrinkage of porous concrete, thus failing to meet the requirements of porous concrete. affect its normal use

Method used

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  • Porous concrete prepared from waste road concrete aggregate and preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Experiment time: October 20, 2013

[0034] Implementation location: laboratory

[0035] Room temperature: room temperature 20-25°C

[0036] Experimental equipment: vibrating screen with a gradation of 10-20, pulverizer, agitator

[0037] Experiment period: 30 days

[0038] The specific components and mass ratio of raw materials are: 1000kg of recycled aggregate, 500kg of steel slag, 250kg of cement, 4kg of polypropylene fiber, 150kg of sand, 150kg of water and 4kg of admixture. Agent, bentonite, natural rubber latex, fine iron powder, and organic flocculant are all 0.8 kg.

[0039] experiment procedure:

[0040] (1) Preparation of raw materials: 1) Preparation of recycled aggregate: use waste concrete after road reconstruction, expose it to the sun for 1-2 hours, then use a pulverizer to crush it into particles with a particle size of 45-60cm, and then expose it to the sun again After 1-2 hours, perform secondary crushing; after crushing into particles with a par...

Embodiment 2

[0050] Experiment time: January 20, 2014

[0051] Implementation location: workshop

[0052] Room temperature: room temperature 20-25°C

[0053] Experimental equipment: vibrating screen with a gradation of 5 to 15, pulverizer, agitator

[0054] Experiment period: 35 days

[0055] The specific components and mass ratio of raw materials are: recycled aggregate 1080kg, steel slag 540kg, cement 270kg, polypropylene film fiber 5kg, sand 180kg, water 180kg and admixture 5kg. , bentonite, natural rubber latex, fine iron powder, and organic flocculant are all 0.83 kg.

[0056] experiment procedure:

[0057] (1) Preparation of raw materials: 1) Preparation of recycled aggregate: use waste concrete after road reconstruction, expose it to the sun for 1-2 hours, then use a pulverizer to crush it into particles with a particle size of 45-60cm, and then expose it to the sun again After 1-2 hours, perform secondary crushing; after crushing into particles with a particle size of 30-40cm,...

Embodiment 3

[0067] Experiment time: February 20, 2014

[0068] Implementation location: laboratory

[0069] Room temperature: room temperature 20-25°C

[0070] Experimental equipment: vibrating screen with a gradation of 5 to 15, pulverizer, agitator

[0071] Experiment period: 40 days

[0072] The specific components and mass ratio of raw materials are: 1200kg of recycled aggregate, 600kg of steel slag, 300kg of cement, 6kg of polypropylene fiber, 200kg of sand, 200kg of water and 6kg of admixture. , bentonite, natural rubber latex, fine iron powder, and organic flocculant are all 1 kg.

[0073] experiment procedure:

[0074] (1) Preparation of raw materials: 1) Preparation of recycled aggregate: use waste concrete after road reconstruction, expose it to the sun for 1-2 hours, then use a pulverizer to crush it into particles with a particle size of 45-60cm, and then expose it to the sun again After 1-2 hours, perform secondary crushing; after crushing into particles with a particle ...

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Abstract

The invention discloses a porous concrete prepared from a waste road concrete aggregate and a preparation process, belonging to the technical field of concrete. The porous concrete specifically comprises the following components in parts by mass: 1000-1200 parts of a recycled aggregate, 500-600 parts of steel slag, 250-300 parts of cement, 2-6 parts of polypropylene film-broken fibers, 100-200 parts of sand, 150-200 parts of water and 2-6 parts of an additive, wherein the additive consists of 10-15 parts of a high-efficiency water reducing agent, 10-15 parts of bentonite, 10-15 parts of natural rubber latex, 10-15 parts of fine iron powder and 10-15 parts of an organic flocculating agent. The porous concrete prepared by the process disclosed by the invention not only meets the national requirements but also meets the requirements of plant growth, and can be widely applied to two sides of a road for protecting the road as well as afforesting the environment, so the porous concrete has a great significance.

Description

technical field [0001] The invention relates to a porous concrete and a preparation process, in particular to a porous concrete prepared from road waste concrete aggregates and a preparation process, and belongs to the technical field of concrete. Background technique [0002] With the development of my country's economy and the continuous deepening of urbanization, urban roads are also constantly being expanded and rebuilt, resulting in a large amount of waste concrete. The traditional treatment methods are landfill or stacking, which not only consumes a lot of construction costs such as arable land and garbage removal, but also puts a lot of pressure on environmental governance. [0003] In order to alleviate the above-mentioned pressure, it is often used to directly use waste concrete as the aggregate of porous concrete. Porous concrete is a kind of concrete with a special pore structure, which is made of specific graded aggregates, cement, water, admixtures, etc. throug...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/06C04B18/14C04B16/06
CPCC04B28/02C04B18/16C04B18/142C04B16/0633C04B14/06C04B14/104C04B22/04C04B24/24C04B2103/302C04B2103/0068Y02W30/91
Inventor 宋金博曾周玉
Owner 宋金博
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