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A kind of aeolian sand cement stabilized graded crushed stone

A technology for grading crushed stone and cement stabilization, applied in the field of building materials, can solve the problems of unsatisfactory flexural tensile strength and crack resistance of crushed stone, lack of road construction stone resources, and short service life of roads, etc., to reduce road construction. The effect of cost, low cost and short transportation distance

Active Publication Date: 2020-07-14
CCCC SECOND HARBOR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The cost of road construction in desert areas is high, and the pavement base is mainly: (1) the lack of road construction stone resources leads to a significant increase in cost; (2) the use of fine aggregates with a particle content below 0.075mm will affect the overall stability, and the existing cement is stable. The bending and tensile strength and crack resistance of graded gravel are not ideal, and the service life of the road is not long

Method used

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  • A kind of aeolian sand cement stabilized graded crushed stone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A blown-sand cement stabilized graded crushed stone is composed of P.F32.5 cement, water and blown-sand graded crushed stone, and its mass percentage ratio is: cement: 4.2%, water: 5.6%, wind blown sand Accumulated sand graded crushed stone: 90.2%.

[0029] Among them, the aeolian sand graded crushed stone is composed of raw materials in the following mass ratio: aeolian sand: stone chips: crushed stone = 8:26:66.

[0030] The mass ratio of particle size distribution of aeolian sand is:

[0031] (0~0.075) mm: (0.075~0.25) mm: (0.25~3) mm=2:87:11.

[0032] The mass ratio of particle size distribution of gravel is:

[0033] (4.75 ~ 9.5) mm: (9.5 ~ 19.0) mm: (19.0 ~ 26.5) mm = 18:43:39.

Embodiment 2

[0035] A blown-sand cement stabilized graded crushed stone is composed of P.F32.5 cement, water and blown-sand graded crushed stone, and its mass percentage ratio is: cement: 4.7%, water: 5.4%, wind blown sand Accumulated sand graded crushed stone: 89.9%.

[0036] The aeolian sand graded crushed stone is composed of raw materials in the following mass ratio: aeolian sand: stone chips: crushed stone = 13:17:70.

[0037] The mass ratio of particle size distribution of aeolian sand is:

[0038] (0-0.075) mm: (0.075-0.25) mm: (0.25-3) mm = 1:75:24.

[0039] The mass ratio of particle size distribution of gravel is:

[0040] (4.75~9.5) mm: (9.5~19.0) mm: (19.0~26.5) mm=22:39:39.

Embodiment 3

[0042] A kind of aeolian sand cement stabilized graded gravel, which is composed of P.F32.5 cement, water, and aeolian sand graded gravel, and its mass percentage ratio is: cement 4.7%, water: 5.2%, aeolian sand Sand graded gravel: 90.1%.

[0043] Wherein, the aeolian sand graded crushed stone is composed of raw materials in the following mass ratio: aeolian sand: stone chips: crushed stone = 12:20:68.

[0044] The mass ratio of particle size distribution of aeolian sand is:

[0045] (0-0.075) mm: (0.075-0.25) mm: (0.25-3) mm = 1:79:20.

[0046] The mass ratio of particle size distribution of gravel is:

[0047] (4.75~9.5) mm: (9.5~19.0) mm: (19.0~26.5) mm=21:41:38.

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Abstract

The invention discloses aeolian sand cement stabilized graded broken stone. The aeolian sand cement stabilized graded broken stone comprises the following raw materials by mass percent: 4.2-5.2% of cement, 4.6-6.6% of water, and the balance of aeolian sand graded broken stone; the aeolian sand graded broken stone comprises the following raw materials by mass ratio, and the ratio of the aeolian sand to the stone chips to the broken stone is equal to (8-13):(17-26):(66-70). According to the aeolian sand cement stabilized graded broken stone, the capital input of the highway projects is relatively low, the cost of the raw materials for building the road is low, and the flexural-tensile strength and the crack resistant property of the cement stabilized graded broken stone are improved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to an aeolian sand cement stabilized graded crushed stone. Background technique [0002] The cost of road construction in desert areas is high, and the pavement base is mainly: (1) the lack of road construction stone resources leads to a significant increase in cost; (2) the use of fine aggregates with a particle content below 0.075mm will affect the overall stability, and the existing cement is stable. The bending and tensile strength and crack resistance of graded gravel are not ideal, and the service life of the road is not long. Contents of the invention [0003] The purpose of the present invention is to provide a kind of aeolian sand cement stabilized graded crushed stone, which solves the problem of large capital investment in highway engineering and high cost of road construction raw materials, and improves the bending and tensile strength and crack resistance of cement s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B28/04
CPCC04B28/00C04B28/04C04B2111/0075C04B2201/50C04B14/068C04B14/02
Inventor 耿权陈立兵师华符超董彦霍道平周新尧罗思桥
Owner CCCC SECOND HARBOR ENG
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