Super-thick regenerative cement stabilized macadam foundation

A technology for stabilizing gravel base and reclaiming cement, applied in roads, roads, buildings, etc., can solve problems such as waste of machinery and personnel, increase road costs, strength damage, etc., and achieve high utilization, cost saving, and shortening of age. Effect

Pending Publication Date: 2019-09-20
河南省光大路桥工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The thickness of each layer of traditional cement-stabilized macadam paving is generally 22-23cm. Paving generally requires two layers, and the first layer needs to wait for 7 days of strength age before the second layer can be constructed, and the second layer should be rolled. Layering will cause a certain degree of damage to the strength of the first layer, resulting in lengthening of age, waste of machinery and personnel, and increase of road costs

Method used

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  • Super-thick regenerative cement stabilized macadam foundation
  • Super-thick regenerative cement stabilized macadam foundation
  • Super-thick regenerative cement stabilized macadam foundation

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Experimental program
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Effect test

Embodiment 1

[0055] The ultra-thick recycled cement stabilized crushed stone base is composed of the following raw materials: the first crushed stone, the second crushed stone, the third crushed stone, recycled materials, and the fourth crushed stone; the weight ratio of the above raw materials is: the first crushed stone: The second crushed stone: the third crushed stone: recycled material: the fourth crushed stone=27 parts: 14 parts: 4 parts: 33 parts: 20 parts, the degree of compaction of the base layer is ≥ 96%, and the water content of the base layer 5.5%~6.3%, the dry density of the base layer is 2.0~2.4g / cm 3 .

Embodiment 2

[0057] Ultra-thick recycled cement stabilized crushed stone base, composed of the following raw materials: first crushed stone: second crushed stone: third crushed stone: recycled material: fourth crushed stone = 23 parts: 30 parts: 3 parts: 29 parts: 14 share.

[0058] The degree of compaction of the base layer is ≥96%, the water content of the base layer is 6.1%, and the maximum dry density of the base layer is 2.298g / cm 3 .

Embodiment 3

[0060] In order to prepare an ultra-thick recycled cement-stabilized gravel base, the preparation process of the ultra-thick recycled cement-stabilized gravel base comprises the following steps:

[0061] 1) Demolition and milling of pavement, planing and milling of asphalt pavement with milling machine, oil hammer for cement concrete pavement, breaking water stabilization layer and fly ash layer with oil hammer, and concentrating water stabilization or fly ash with excavator pile up.

[0062] 2) Crushing and grading. After the old cement-stabilized gravel is sent to the crushing station, it is crushed by a conventional gravel crusher. The crushed cement-stabilized gravel is conveyed to the grading sieve for classification and screening through a belt to obtain recycled materials that meet the particle size requirements. Material.

[0063] 3) Design grading, carry out tests such as sieving the graded crushed stone, compacting the inorganic binder, and designing the mixing rati...

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Abstract

The invention relates to a super-thick regenerative cement stabilized macadam foundation. The super-thick regenerative cement stabilized macadam foundation is composed of the following raw materials: first macadam, second macadam, third macadam, regenerative materials and fourth macadam; the particle size of the first macadam is 10 mm-30 mm, the particle size of the second macadam is 10 mm-20 mm, the particle size of the third macadam is 5 mm-10 mm, and the particle size of the fourth macadam is 0 mm-5 mm; and the weight ratio of the first macadam to the second macadam to the third macadam to the regenerative materials to the fourth macadam is 20-31 parts: 15-35 parts: 2-27 parts: 28-37 parts: 10-20 parts. According to the provided super-thick regenerative cement stabilized macadam foundation, the cement stabilized macadam source is wide, a recycling method is simple, the usage rate is high, one-time forming can be achieved through paving, the period is shortened, and efficiency of machines and staff is improved.

Description

technical field [0001] The invention belongs to the technical field of regeneration and utilization of pavement base materials, and in particular relates to an ultra-thick recycled cement stabilized gravel base. Background technique [0002] The thickness of each layer of traditional cement-stabilized macadam paving is generally 22-23cm. Paving generally requires two layers, and the first layer needs to wait for 7 days of strength age before the second layer can be constructed, and the second layer should be rolled. The strength of the first layer will be damaged to a certain extent during the layering process, resulting in the lengthening of the age, the waste of machinery and personnel, and the increase of road costs. Contents of the invention [0003] The object of the present invention is to solve the problems raised in the background technology, and provide a super thick recycled cement stabilized crushed stone base that saves costs and materials, can be formed once, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/00E01C3/04
CPCE01C3/003E01C3/04
Inventor 牛科科吴利锁鲁泽东李双华程子岩代红艳王金梅朱闪闪
Owner 河南省光大路桥工程有限公司
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