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Product relevant with cement stabilized recycled aggregate

A technology for recycled aggregates and products, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as difficult to master the ratio, environmental resource burden, complex production process, etc., to save natural resources, Save raw material costs, good waste recycling effect

Inactive Publication Date: 2018-07-03
越艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As aggregate products commonly used in construction, a large amount of sand and gravel natural resources are usually consumed every year, which has caused a great burden on environmental resources.
The existing aggregates that replace the natural resources of sand and gravel are often only able to carry out some simple crushing and proportioning of construction waste, but still cannot meet the requirements for the strength and performance of building materials in the existing construction.
Among the existing products, there are still a large number of recycled concrete products configured by limestone powder, machine-made sand and recycled aggregate, or recycled concrete is composed of limestone powder, cement, gravel, etc. with a relatively large particle size. The ratio is not easy to grasp

Method used

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  • Product relevant with cement stabilized recycled aggregate
  • Product relevant with cement stabilized recycled aggregate
  • Product relevant with cement stabilized recycled aggregate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In a specific embodiment, the technical solution of this product can be implemented in the following ways:

[0031] (1) Raw materials

[0032] 1. Cement

[0033] The unit chooses P.S32.5 slag portland cement to produce this product, and conducts sampling inspection according to the test frequency of the "Regulations on the Quality Management of Inorganic Binder Stable Materials" compiled by the Road Engineering Quality Supervision Station to ensure that the cement quality meets the design requirements.

[0034] 2. Aggregate

[0035] (1) The aggregates of this product are recycled aggregates from construction waste crushed and screened, which are required to be clean and free of sundries.

[0036] (2) The aggregate crushing value is not more than 20%, and the needle flake content is not more than 3%.

[0037] The test frequency of the "Regulations on the Quality Management of Inorganic Binder Stable Materials" compiled by the Road Engineering Quality Supervision Stati...

Embodiment 2

[0059] The technical solution of this product can also be realized in the following ways:

[0060] (1) Raw materials

[0061] 1. Cement

[0062] The unit chooses P.S.B32.5 slag Portland cement to produce this product, and conducts sampling inspection according to the test frequency of the "Inorganic Binder Stable Material Quality Management Regulations" compiled by the Road Engineering Quality Supervision Station to ensure that the cement quality meets the design requirements.

[0063] 2. Aggregate

[0064] (1) The aggregates of this product are recycled aggregates from construction waste crushed and screened, which are required to be clean and free of sundries.

[0065](2) The aggregate crushing value is not more than 20%, and the needle flake content is not more than 3%, and the entry into the site is carried out according to the test frequency of the "Quality Management Regulations for Inorganic Binder Stable Materials" compiled by the Beijing Road Engineering Quality Sup...

Embodiment 3

[0085] combine figure 1 , in yet another specific embodiment, the production process of the product is as follows:

[0086] 1) Pulverize the construction waste materials and sieve them according to particle size specifications to obtain recycled aggregates;

[0087] 2) Mix different particle sizes of the recycled aggregate according to the ratio of the number of aggregates and mix them evenly;

[0088] 3) Mix the uniformly mixed aggregate and cement in step 2) according to the mixing ratio;

[0089] 4) Add an appropriate amount of water to the mixed material in step 3), and after mixing evenly, the mixed material is required to be clean, free of impurities, uniform, and free of segregation;

[0090] 5) Discharging to form a recycled product.

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Abstract

The invention provides a product relevant with a cement stabilized recycled aggregate. The product contains cement and recycled aggregates, wherein the recycled aggregates are obtained by crushing andscreening building waste; the cement is P.S32.5 Portland blast furnace slag cement; the aggregate crushing value of the recycled aggregates is not more than 20%, and the acicular content is not morethan 3%; the recycled aggregates have three specification particle sizes as follows: 0-4.75mm, 4.75mm-19mm and 19mm-31.5mm; and the ratio of the recycled aggregates with the specification particle sizes of 0-4.75mm, 4.75mm-19mm and 19mm-31.5mm are sequentially 50% to 30% to 20%. The product is completely accordant with specified compressive strength, and the recycled aggregates are recycled and reutilized, so that the raw material cost is saved, the natural resources are saved, and the waste reutilization is well realized.

Description

technical field [0001] The invention relates to a recycled product utilizing recycled aggregate, in particular to a recycled product formed according to a specific proportioning relationship and preparation process of stable recycled aggregate related to cement mixing. Background technique [0002] With the continuous advancement of my country's infrastructure construction, a large amount of construction waste will be generated in urban construction. The random disposal of these construction wastes will inevitably bring about a large number of urban pollution problems. Under the background of advocating the concept of environmental protection and waste utilization in our country, the recycling and reuse of construction waste materials has become an important development direction in recent years. [0003] As aggregate products commonly used in construction, a large amount of sand and gravel natural resources are usually consumed every year, causing a great burden on environm...

Claims

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Application Information

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IPC IPC(8): C04B28/08C04B18/16C04B20/02
CPCC04B18/16C04B20/026C04B28/08C04B2201/50C04B20/0076C04B22/002Y02W30/91
Inventor 不公告发明人
Owner 越艳
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