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Brick capable of using salt-containing aeolian sand as raw materials and preparation method thereof

A technology for aeolian sand and bricks, applied in the field of bricks and their preparation, can solve the problems of the preparation of mechanical sand barriers, poor environmental adaptability, complicated preparation process, etc. The effect of good curing effect and simple preparation process

Active Publication Date: 2019-12-03
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention aims at the technical defects of the prior art, and provides a mechanical sand barrier in the form of sand-fixing bricks that can use salt-containing aeolian sand as raw material to solve the problem that it is difficult to use salt-containing aeolian sand to prepare Technical Problems of Mechanical Sand Barriers
[0009] The purpose of the present invention is to provide a curing agent firstly used in the production of mechanical sand barriers for windproof and sand-fixing, so as to solve the problems of complicated preparation process, difficult procurement, difficult transportation, poor environmental adaptability and high cost of existing chemical sand-fixing agents.

Method used

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  • Brick capable of using salt-containing aeolian sand as raw materials and preparation method thereof
  • Brick capable of using salt-containing aeolian sand as raw materials and preparation method thereof
  • Brick capable of using salt-containing aeolian sand as raw materials and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] ①At room temperature, prepare a portion of aeolian sand for use.

[0050] ②At room temperature, prepare a raw material of composite Portland cement P·C32.5 or geotechnical rock 5%-10%, water 8% and salt content 8%.

[0051] ③Under normal temperature, use vibration to make bricks to machine-made bricks.

[0052] ④ After the preparation of the sand-fixing sand barrier, it is maintained in a natural environment for 2 days.

[0053] ⑤ After curing, use a standard road strength tester to conduct an unconfined compressive strength test.

[0054] ⑥After the test, see Table 1 and Table 2 for the compressive strength of each proportion.

Embodiment 2

[0056] ①At room temperature, prepare a portion of aeolian sand for use.

[0057] ②At room temperature, prepare a raw material of composite Portland cement P·C32.5 or geotechnical rock 5%-10%, water 8% and salt content 8%.

[0058] ③Under normal temperature, use vibration to make bricks to machine-made bricks.

[0059] ④ After the preparation of the sand-fixing sand barrier, it is maintained in a natural environment for 2 days.

[0060] ⑤ After curing, carry out the dry-wet cycle test.

[0061] ⑥After 20 times of dry-wet cycle test, see Table 1 and Table 2 for the compressive strength of each proportion.

Embodiment 3

[0063] ①At room temperature, prepare a portion of aeolian sand for use.

[0064] ②At room temperature, prepare a raw material of composite Portland cement P·C32.5 or geotechnical rock 5%-10%, water 8% and salt content 8%.

[0065] ③Under normal temperature, use vibration to make bricks to machine-made bricks.

[0066] ④ After the preparation of the sand-fixing sand barrier, it is maintained in a natural environment for 2 days.

[0067] ⑤ After curing, conduct a freeze-thaw cycle test.

[0068] ⑥ After 20 freeze-thaw cycle tests, see Table 1 and Table 2 for the compressive strength of each mix.

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Abstract

The invention provides a brick capable of using salt-containing aeolian sand as raw materials and a preparation method thereof. According to the technical scheme, cement and materials for soil to rockare used as a curing agent, and the technical problem that the salt-containing aeolian sand is difficultly used as engineering raw-materials due to difficulty in curing the salt-containing aeolian sand is solved. Since selected raw materials are local aeolian sand, no new pollution is generated after weathering when the service life is reached, the environmental compatibility is good, and the engineering cost is further reduced. In the production process, underground saturated saline water resources in the desert area can be used, the trouble of transporting and storing fresh water is avoided, the project cost is greatly reduced, and on-site construction is facilitated. According to the brick capable of using the salt-containing aeolian sand as the raw materials and the preparation methodthereof, the construction is very simple, only a vibrating type brick making machine is required, the movement is flexible, and the construction position can be moved at any time according to the requirements of the project; and meanwhile, the sand-fixing bricks can be cured only under natural conditions. The sand-fixing brick has the advantages of high strength, high stability after wind erosion, good durability and the like, and has a good sand-fixing effect through constructed sand-fixing sand-protecting barriers.

Description

technical field [0001] The invention relates to the technical field of windbreak and sand fixation, in particular to a brick capable of using saline drift sand as a raw material and a preparation method thereof. Background technique [0002] my country is the country with the largest desertification area in the world. The climate in the desert area is dry, the precipitation is scarce, the wind and sand are frequent, and the sand source is difficult to control. Therefore, infrastructure such as railways in desert areas are affected by wind and sand to varying degrees. [0003] At present, the existing sand fixation techniques mainly include: mechanical sand fixation, chemical sand fixation and biological sand fixation. Mechanical sand fixation technology usually sets sand barriers such as stone grids and grass grids on sand dunes. This sand fixation method changes the direction of wind and sand running on the underlying surface and increases surface roughness by setting up ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04E01F7/02C04B111/21
CPCC04B28/04C04B2111/21C04B2201/50E01F7/02C04B18/0427C04B14/068C04B22/124Y02A40/22
Inventor 孙婧王海龙刘宏波王宏毛世奇王茜兰建伟
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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