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Polypropylene fiber lime-fly ash aggregate base material and preparation method thereof

A technology of polypropylene fiber and fly ash gravel, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem that the drying shrinkage slowing effect is not obvious, and achieve excellent road performance, water The effect of improving stability

Inactive Publication Date: 2009-03-18
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results show that: ① With the increase of fine steel slag content, the strength and stiffness of the mixture first increase and then decrease; The effect of slowing down the drying shrinkage of the mixture is more obvious, but the effect of slowing down the drying shrinkage after adding coarse steel slag is not very obvious

Method used

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  • Polypropylene fiber lime-fly ash aggregate base material and preparation method thereof

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Experimental program
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Effect test

Embodiment Construction

[0033] 1. Preparation of materials:

[0034] Weigh 100kg of lime and fly ash (28.6kg of lime and 71.4kg of fly ash), 471.4kg of aggregate, 45.8kg of water, and 0.1-0.15kg of polypropylene fiber.

[0035] And divide the polypropylene fiber into 5 equal parts.

[0036] 2. Preparation method steps:

[0037] First, the polypropylene fibers are pre-dispersed in lime and fly ash in 5 batches, and mechanically stirred every time they are added.

[0038] Then the mixture of fly ash (lime and fly ash) and fiber is mixed with aggregate and water by ordinary machinery to prepare the fly ash crushed stone base material mixed with polypropylene fiber.

[0039] 3. Application:

[0040] The prepared fly ash crushed stone base material mixed with polypropylene fiber is supplemented on the base and maintained under standard conditions.

[0041] 4. Detection index and effect:

[0042]

[0043] Through analysis and arrangement, the effect after adding polypropylene fiber is summarized as...

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Abstract

The invention polypropylene fiber lime fly-ash broken stone base course and a method for preparing the same and relates to the technical field of road semi-rigid base course modification. The preparation method is as follows: polypropylene fiber is per-dispersed in lime and fly-ash, and then is mixed with aggregate and water to form the polypropylene fiber lime fly-ash broken stone base course. Compared with the prior lime fly-ash broken stone base course, the polypropylene fiber lime fly-ash broken stone base course has the advantages of higher cracking resistance, bending strength, indirect pull strength and water stability and smaller temperature shrinkage and dry shrinkage.

Description

technical field [0001] The invention relates to the technical field of improving road semi-rigid base materials, and aims at inventing a polypropylene fiber fly ash gravel base material. Background technique [0002] At present, the cracking problem of semi-rigid base has attracted extensive attention from domestic and foreign engineering circles. Many improvement measures have been put forward for the problem of cracking at the grassroots level, and certain results have been achieved. [0003] The specific measures mainly focus on the following aspects: [0004] ① Design for pavement structure; [0005] ② For the base material itself; [0006] ③ For the setting and construction process between the semi-rigid base and asphalt surface; [0007] ④ For the asphalt pavement material itself. [0008] Starting from the base material itself, it is possible to reduce its shrinkage coefficient as much as possible and improve Its strength increases the cracking resistance of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/08C04B14/28C04B16/06
CPCC04B2111/34C04B2111/27C04B28/10C04B2111/343Y02W30/91C04B14/02C04B16/0633C04B18/08C04B40/0028
Inventor 肖鹏吴正光孙伟
Owner YANGZHOU UNIV
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