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Road subbase course material and method for preparing same

A sub-base and road technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of non-sustainable development, lack of natural sand and gravel, pollution of the environment, etc., and reduce consumption and mining. , the effect of alleviating the increasing scarcity and high elastic modulus

Inactive Publication Date: 2008-08-27
上海华威环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method of dealing with these construction wastes is to bury them or stack them in the open air, which not only occupies cultivated land, pollutes the environment, but also causes a lot of waste of resources
In addition, the existing road paving technology uses natural gravel as the skeleton material of the road sub-base, which requires mining a large amount of natural sand and gravel, resulting in the increasing shortage of natural gravel, which does not meet the requirements of sustainable development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The weight percent of the main composition of the road base course material that the present embodiment provides is as follows:

[0025] Waste Concrete 44%

[0026] Waste bricks 30%

[0027] Waste soil 20%

[0028] Binder 6%

[0029] The binder is cement.

[0030] The preparation method of the road base course material of the present embodiment is as follows:

[0031] 1) Sorting waste concrete, waste bricks and waste soil;

[0032] 2) Separately crush waste concrete and waste bricks, screen for pretreatment, and remove impurities therein;

[0033] 3) Respectively crush the pretreated waste concrete and waste bricks to lumps with a particle size less than 40mm;

[0034] 4) Weigh waste concrete, waste bricks, waste soil and binders according to the ratio on site;

[0035] 5) Add water to the above mixed material, make it stir and mix evenly, wherein: the amount of water added is 10% of the total weight of the mixed material;

[0036] 6) Spread the above-mentioned ...

Embodiment 2

[0043] The weight percent of the main composition of the road base course material that the present embodiment provides is as follows:

[0044] Waste Concrete 48%

[0045] Waste bricks 10%

[0046] Waste soil 40%

[0047] Binder 2%

[0048] The binder is cement.

[0049] The preparation method of the road base course material in this embodiment is the same as that described in Embodiment 1, except that the amount of water added is 5% of the total weight of the mixed material.

[0050] The performance test data of the road base course material of the present embodiment is shown in Table 2:

[0051] Table 2 Performance test data of road subbase materials

[0052] Test items

[0053] 7d unconfined compressive strength (MPa)

Embodiment 3

[0055] The weight percent of the main composition of the road base course material that the present embodiment provides is as follows:

[0056] Waste concrete 10%

[0057] Waste bricks 70%

[0058] Waste soil 5%

[0059] Binder 15%

[0060] The binder is a mixture of cement and pozzolanic additives, wherein the pozzolanic additive accounts for 1% of the weight of the binder.

[0061] The preparation method of the road base course material in this embodiment is the same as that described in Example 1, except that the amount of water added is 15% of the total weight of the mixed material.

[0062] The performance test data of the road base course material of the present embodiment is shown in Table 3:

[0063] Table 3 Performance test data of road subbase materials

[0064] Test items

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Abstract

The invention discloses a road subbottom material and a relative preparation method, wherein the road subbottom material uses 10-80% of waste concretes, 10-70% of crushed bricks, 5-40% of waste residue and 2-20% of adhesive as main components, while the total amount is 100%. The inventive road subbottom has high compressive strength, better hydraulicity, high resilient modulus, strong distorsion resistance ablity and wide application for the road construction of soft soil foundation at riverside and coastal area. The invention can resolve the treatment problems of waste concrete, waste brick and waste residue, to reduce the consumption and development of natural sand gravel and release the scarcity of natural sand gravel, to satisfy sustainable development. The invention has the advantages of energy saving, reduced consumption, material saving and emission reduction.

Description

technical field [0001] The invention relates to a road subbase material and a preparation method thereof, belonging to the technical field of road engineering materials. Background technique [0002] With the development of urban construction, a large amount of waste concrete, waste bricks, waste slag and other construction waste have been produced. The current method of dealing with these construction wastes is to bury them or stack them in the open air, which not only occupies cultivated land, pollutes the environment, but also causes a lot of waste of resources. In addition, the existing road paving technology uses natural gravel as the skeleton material of the road sub-base, which requires the mining of a large amount of natural sand and gravel, resulting in the increasing shortage of natural gravel, which does not meet the requirements of sustainable development. Contents of the invention [0003] The purpose of the present invention is to provide a road subbase mate...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/16
CPCC04B2111/0075C04B2111/00017C04B28/02Y02W30/91C04B7/12C04B18/04C04B18/16C04B18/165C04B20/026
Inventor 李如燕孙可伟林志伟李跃炬王守刚
Owner 上海华威环保技术有限公司
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