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Light subgrade material and preparation method thereof

A roadbed material, lightweight technology, used in roads, roads, sustainable waste treatment, etc., can solve the problems of difficult wet and soft clay, low hydraulic hardness, difficult foundation stability, etc., to reduce uneven settlement of pavement, reduce The effect of maintenance costs, obvious economic benefits and social benefits

Inactive Publication Date: 2002-12-18
TENGDA CONSTR GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is more difficult to fundamentally improve the stability of wet and soft clay due to the limitation of construction period, cost, environment, resources and technology in the above method
At present, there is also the practice of using fly ash as a lightweight material instead of clay as a roadbed; there are also reports abroad that large pieces of rigid foam are used as foundation materials. However, because these materials have no hydraulicity or very little hydraulicity, it is difficult to truly Improve the stability of the foundation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention is further described below by way of examples. Embodiment 1, each group distribution ratio is as follows:

[0032] Fly ash (high calcium grade II ash) 1000g

[0033] Calcium chloride 10g

[0034] water 220g

[0035] Polystyrene foam plastic particles 0.67L were prepared according to the above steps to obtain the required material. performance:

[0036] Fluidity (mm) 130

[0037] Bulk density (kg / m 3 ) 1.24

[0038] 28-day compressive strength (MPa) 3.2

[0039] Strength softening coefficient 0.91

[0040] Water absorption rate (%) 13% embodiment 2, each group distribution ratio is as follows:

[0041] Fly ash (high calcium grade II ash) 900g

[0042] Cement (label 32.5) 100g

[0043] Calcium chloride 5g

[0044] water 230g

[0045] 0.80L of polystyrene foam plastic particles was prepared according to the aforementioned steps to obtain the desired material. performance:

[0046] Fluidity (mm) 130

[0047] Bulk density (kg / m 3 ) 1.11...

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Abstract

The present invention relates to a new-type light road bed material and its preparation method. It is made up by using industrial waste slag and discarded foamed plastics as main raw material, addingactivating agent and water and stirring them. Said method possesses high strength, good hydraulicity and strong deformation resistance, so it is an ideal roadbed material.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to a novel lightweight roadbed material using industrial waste residue and waste foam plastics as main raw materials and a preparation method thereof. Background technique [0002] In most areas of southern my country, it is a typical wet and soft clay foundation. Its biggest feature is poor water stability and high compressibility. Under the action, the base will be gradually compacted, subsidence or consolidation deformation and uneven deformation will occur, which will lead to excessive deformation and stress increase on the road surface, road cracking, uneven road surface and bridge head jumping and other diseases. , affecting the service life of the road and affecting the comfort of driving. [0003] To improve the stability of soft soil subgrade, two methods can be adopted, one is to adopt the method of construction and treatment of subgrade, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/0075C04B2111/40Y02W30/91C04B16/08C04B18/067
Inventor 杨钱荣杨全兵朱蓓蓉张树青吴学礼
Owner TENGDA CONSTR GROUP CORP
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