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Cement stabilized macadam material added with illegal cooking oil and preparation method

A technology of cement-stabilized gravel and waste oil, which is applied in the field of cement-stabilized gravel materials and preparation, cement-stabilized gravel semi-rigid base materials, and can solve the problems of high cost and increased construction difficulty

Active Publication Date: 2018-10-19
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of these measures can only inhibit and reduce the occurrence and development of cracks. How to start from the inside of the material and fundamentally improve the crack resistance of the base structure remains to be further studied.
[0004] Starting from the material, suppress and reduce the cracking of the semi-rigid base. At present, there are methods such as adding emulsified asphalt and resin when preparing cement-stabilized gravel materials. This method has achieved certain results, but it also has the disadvantages of increasing construction difficulty and high cost.

Method used

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  • Cement stabilized macadam material added with illegal cooking oil and preparation method
  • Cement stabilized macadam material added with illegal cooking oil and preparation method
  • Cement stabilized macadam material added with illegal cooking oil and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] On the basis of the comparative example, the coarse aggregate is modified, and the amount of waste oil added accounts for 0.88% of the coarse aggregate, according to figure 1 Process for preparing oil-mixed cement-stabilized gravel materials, the composition formula of waste oil-modified cement-stabilized gravel materials is as follows:

[0025]

[0026] The basic performance indicators of waste oil are as follows: water content: 0.53%; solid content: 9.2%.

Embodiment 2

[0028] On the basis of Example 1, the amount of refueling is changed, and the amount of waste oil added accounts for 1.1% of the coarse aggregate, according to figure 1 Process for preparing oil-mixed cement-stabilized gravel materials, the composition formula of waste oil-modified cement-stabilized gravel materials is as follows:

[0029]

Embodiment 3

[0031] Change the ratio of coarse aggregate, fine aggregate, cement and water within the required range, the amount of waste oil added accounts for 0.88% of the coarse aggregate, and the composition formula of waste oil modified cement stabilized crushed stone material is as follows:

[0032]

[0033] Embodiment and comparative example performance contrast

[0034] The strength and flexibility properties of Comparative Example 1, Embodiment 1, Embodiment 2 and Embodiment 3 of the actual test are as follows:

[0035]

[0036] It can be seen from the table that the addition of waste oil to the coarse aggregate will lead to a slight decrease in the strength of the cement-stabilized gravel material, but it meets the requirements of the "Technical Rules for Road Pavement Base Construction" (JTG / T F20-2015). The elastic modulus decreases and the deflection at failure increases, indicating that the flexibility of the material becomes better and it can withstand more deformation...

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Abstract

The invention discloses a cement stabilized macadam material added with illegal cooking oil and a preparation method. The material is prepared from the following ingredients in mass percent: 50 to 70%of modified coarse aggregate, 20 to 40% of fine aggregate, 3 to 6% of cement and 4 to 6% of water, wherein the mass percent sum of all the ingredients is 100%, the modified coarse aggregate is prepared by evenly stirring coarse aggregate and pretreated illegal cooking oil, and the mass percent of the pretreated illegal cooking oil in the coarse aggregate is 0.8 to 1.3%. The preparation method comprises the steps: evenly stirring the illegal cooking oil and the coarse aggregate, then adding the fine aggregate, the cement and the water to be stirred and evenly mixing to obtain the cement stabilized macadam material. Compared with a structural layer of a general semi-rigid base material of the same grade, strength of a structural layer of the cement stabilized macadam material added with theillegal cooking oil disclosed by the invention is slightly reduced, rigidity is remarkably reduced, base cracking and reflection crack generation are effectively reduced, and pavement performance isgood.

Description

technical field [0001] The invention discloses a cement-stabilized gravel material added with waste oil and a preparation method thereof, in particular to cement-stabilized gravel semi-rigid base material for highway engineering construction, and belongs to the technical field of highway engineering. technical background [0002] Cement-stabilized macadam semi-rigid base is the main base structure form of expressways and high-grade highways in my country. The semi-rigid base has the advantages of high strength and low cost, but drying shrinkage and temperature shrinkage will cause cracking of the semi-rigid base, which affects the bearing capacity and service life of the base. How to effectively suppress and reduce the cracking of the semi-rigid base has always been a research hotspot. [0003] At present, for semi-rigid base cracking, the main measures are the use of low-dose cement, optimized gradation design, and the selection of cement-stabilized gravel structures with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/34
CPCC04B28/04C04B2111/00017C04B2111/343C04B22/002C04B14/28C04B14/068C04B14/06C04B18/18
Inventor 李雪连陈宇亮吕新潮王文强刘汉麟杨乐邢欣欣李志明熊渝高飞
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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