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A kind of environment-friendly cement-based material for rapid pavement repair and its preparation and use method

A cement-based material and environmentally friendly technology, applied in the field of concrete materials, can solve problems such as high cost, unfavorable for large-scale production, and complicated operation, and achieve the effect of high early strength, high bonding performance, and fast setting time

Active Publication Date: 2019-11-29
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation of this invention is extremely complicated, and the cost is high, which is not conducive to large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The environment-friendly cement-based material for rapid pavement repair of the present invention is suitable for repairing through cracks with a width of 8 mm. It is mainly made of raw materials with the following mass ratio: environmental protection cement: sand: stone: PTB emulsion: water=5.66:8.45:0:0.20:1.91. Among them, the environmentally friendly cement is composed of MgO, water glass with a modulus of 1.0, slag and fly ash, and its mass ratio is MgO: water glass: slag: fly ash=0.31:0.20:4.05:0.

[0041] The specific steps of the preparation method of the road surface rapid repair environmental protection cement-based material of the present invention are:

[0042] (1) Metering: Measure each component material separately according to the above ratio;

[0043](2) Mix the dry material: pour the slag and MgO into the mixer and dry mix for 2 to 3 minutes, then pour sand and stir for 2 to 3 minutes to form a dry material;

[0044] (3) Preparation of admixture solut...

Embodiment 2

[0049] The environmental protection cement-based material for quick pavement repair of the present invention is suitable for repairing non-penetrating cracks or potholes with a depth of 15mm. It is mainly made of raw materials with the following mass ratio: environmental protection cement: sand: stone: PTB emulsion: water=5.66:8.45:0:0.20:1.91. Among them, the environmentally friendly cement is composed of MgO, NaOH, slag and fly ash, and its mass ratio is MgO: NaOH: slag: fly ash=0.31:0.20:4.05:0.

[0050] The specific steps of the preparation method of the road surface rapid repair environmental protection cement-based material of the present invention are:

[0051] (1) Metering: Measure each component material separately according to the above ratio;

[0052] (2) Mix the dry material: pour the slag and MgO into the mixer and dry mix for 2 to 3 minutes, then pour sand and stir for 2 to 3 minutes to form a dry material;

[0053] (3) Prepare admixture solution: dissolve NaOH...

Embodiment 3

[0058] The environmental protection cement-based material for rapid pavement repair of the present invention is suitable for repairing potholes with a depth of 35 mm. It is mainly made of raw materials with the following mass ratio: environmental protection cement: sand: stone: PTB emulsion: water = 6.02: 8.87: 13.25: 0.53: 2.50. Environmentally friendly cement is composed of magnesium oxide (MgO), water glass with a modulus of 1.5, slag and fly ash, and its mass ratio is MgO: water glass: slag: fly ash=0.56:0.47:5.17:1.22.

[0059] The specific steps of the preparation method of the road surface rapid repair environmental protection cement-based material of the present invention are:

[0060] (1) Metering: Measure each component material separately according to the above ratio;

[0061] (2) Mixing dry material: Pour fly ash, slag and MgO into the mixer for dry mixing for 2 to 3 minutes, then pour sand and stone and stir for 2 to 3 minutes to form dry material;

[0062] (3) ...

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Abstract

The invention discloses an environment-friendly cement-based material for quickly repairing a road surface and a preparation and use method of the material. The environment-friendly cement-based material for quickly repairing the road surface is prepared from the following raw materials in percentage by mass: environment-friendly cement: sand: stone: PTB emulsion: water = 5.66-7.23: 8.45-9.01: 0-16.71: 0.20-0.76: 1.91-2.87, wherein the environment-friendly cement consists of MgO, an activator, slags and fly ashes in a mass ratio of MgO: activator: slags: fly ashes = 0.31-0.72: 0.20-0.68: 4.05-5.62: 0-2.86. The environment-friendly cement-based material for quickly repairing the road surface has the advantages of good workability, simple production process, short setting time, high early strength, good water resistance, good bonding performance, short time for meeting the strength requirements of open traffic, low cost, strong environmental protection and the like, and has a better market application prospect.

Description

technical field [0001] The invention belongs to the field of concrete materials, and in particular relates to an environment-friendly cement-based material for rapid pavement repair and a preparation and use method thereof. Background technique [0002] Cement concrete pavement is widely used in road engineering in our country because of its high strength, good durability, low cost, and less affected by temperature. However, the concrete pavement is subjected to repeated traffic loads and environmental factors during its long-term service, which will cause different degrees of damage to the concrete pavement, such as local minor diseases such as gnawing edges, cracks, and pits. If these local diseases are not repaired in time, under the action of repeated loads, the diseases will increase sharply, which will have a great impact on driving safety and the normal service life of the road, causing serious economic losses. However, traditional pavement repair materials have disa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08E01C23/09C04B111/72
CPCC04B28/08C04B2111/00017C04B2111/72C04B2201/50E01C23/096E01C23/0973C04B22/066C04B18/08C04B22/062C04B14/06C04B14/00C04B24/2688C04B12/04
Inventor 许莉季韬张彬彬
Owner FUZHOU UNIV
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