A construction method for vibration forming cement stabilized crushed stone base

A cement-stabilized crushed stone and construction method technology, which is applied to roads, buildings, instruments, etc., can solve the problems of many cracks in the gravel base, cracks in the asphalt binder surface layer, and filling materials that cannot be compacted, so as to reduce cracks, Improve the life of the road and the effect of uniform gap filling of the roadbed

Active Publication Date: 2021-02-12
秦山伟业建设集团有限公司
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Problems solved by technology

However, due to the different rolling degrees of the upper and lower layers of the base layer, the gap filling degree of the upper and lower gravel skeletons is different. If the gaps are not filled enough, the filling material will not be compacted, and if the gaps are too full, the gravel will not be able to form a skeleton. The "stone-stone" structure results in more cracks in the cement-stabilized macadam base, which will reflect upwards and cause corresponding cracks in the asphalt binder surface, which will affect the quality and service life of the road

Method used

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  • A construction method for vibration forming cement stabilized crushed stone base
  • A construction method for vibration forming cement stabilized crushed stone base

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Embodiment Construction

[0018] refer to figure 1 and figure 2 , the present invention a kind of vibration forming cement stabilized gravel base construction method, comprises the following steps:

[0019] a) Test: Add the cement mortar mixture into the sample box 5 of the vibratory compaction tester, place the sample box 5 under the first through hole 12, and carry out the test of the maximum dry density. In the frame 45, the weights of the counterweights in the hanging frame 45 on the side plates 44 on both sides should be the same, and the hoist 6 is used to lower the support plate 42 until the vibrating wheel 7 contacts the cement mortar mixture. Statically press the cement mortar mixture 1 to 3 times, and then make the vibrating wheel 7 vibrate the cement mortar mixture 3 to 7 times under the condition of vibration. The overlapping width of the vibration wheel 7 wheel tracks is 1 / 3~1 / 2 wheel width, the traveling speed of the mobile frame 4 along the second track 21 is 0.6~0.7m / s, after the vi...

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Abstract

The invention discloses a construction method of a vibration-formed cement-stabilized macadam foundation. The construction method comprises the steps of testing, paving, grouting, rolling, maintenanceand detection; a vibrating compaction tester composed of a supporting frame with through holes, a sliding plate and a moving frame is utilized, through static compaction and vibrating compaction, a compaction test outside an indoor imitation chamber is achieved, and the maximum dry density and optimal moisture content of different layers above and below a sample are obtained, thereby selecting appropriate vibration frequencies of a rolling bar and road roller; through the initial pressure of the rolling bar after each time of grouting and the overall rolling of the road roller after three times of grouting, even gap filling of a roadbed can be ensured, cracks are reduced, and the service life of a road is prolonged.

Description

technical field [0001] The invention relates to the technical field of traffic civil engineering, in particular to the technical field of a construction method for vibration-forming cement-stabilized gravel base. Background technique [0002] At present, most of the highways and urban roads in my country have been built with inorganic binder base and asphalt binder surface layer structure, of which the inorganic binder base is mostly cement stabilized gravel. Cement-stabilized crushed stone consists of aggregates and mortar, wherein the aggregates are graded crushed stones, and the mortar consists of water, cement and aggregates. The strength formation principle of cement-stabilized macadam pavement base is: use graded crushed stones as aggregates, use mortar to fill the gaps in the aggregates, and pave and compact according to the principle of embedded extrusion. , requires crushed stones to form a skeleton, with high overall strength and good board performance. However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/12G01N9/36
Inventor 胡怡桂晓董小芬薛琳李书航张华顺
Owner 秦山伟业建设集团有限公司
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