Aeolian sand cement stabilized graded broken 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, short service life of roads, lack of road construction stone resources, etc., to reduce road construction. The effect of cost, low cost and short transportation distance

Active Publication Date: 2018-05-22
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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  • Aeolian sand cement stabilized graded broken stone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An aeolian sand cement stabilized graded crushed stone is composed of P.F32.5 cement, water, and aeolian sand graded crushed stone. Its mass percentage ratio is: cement: 4.2%, water: 5.6%, wind Sand graded gravel: 90.2%.

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

[0030] The mass ratio of the 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 the particle size distribution of the crushed stone is:

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

Embodiment 2

[0035] A kind of aeolian sand cement stabilized graded crushed stone is composed of P.F32.5 cement, water and aeolian sand graded crushed stone. Its mass percentage ratio is: cement: 4.7%, water: 5.4%, wind Sand graded gravel: 89.9%.

[0036] Aeolian sand graded gravel is composed of raw materials with the following mass ratios: aeolian sand: stone chips: gravel = 13:17:70.

[0037] The mass ratio of the 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 the particle size distribution of the crushed stone 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 crushed stone is composed of P.F32.5 cement, water and aeolian sand graded crushed stone. Its mass percentage is: cement 4.7%, water: 5.2%, aeolian sand Sand graded gravel: 90.1%.

[0043] Among them, the aeolian sand graded crushed stone is composed of raw materials with the following mass ratios: aeolian sand: stone chips: crushed stone = 12:20:68.

[0044] The mass ratio of the 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 the particle size distribution of the crushed stone 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] Road construction costs in desert areas are high, and the main pavement bases are: (1) The lack of road stone resources leads to a significant increase in cost; (2) The use of fine aggregates with a particle content of less than 0.075mm affects the overall stability, and the existing cement is stable The flexural tensile strength and crack resistance of graded gravel are not ideal, and the service life of the highway is not long. Summary 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 materials, and improves the flexural tensile strength and crack resistance of cement stabilized graded crushed stone ...

Claims

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Application Information

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Patent Type & Authority Applications(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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