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A kind of special concrete for paver and its preparation method and construction method

A construction method and paver technology, which are applied in the direction of on-site coagulation pavement, roads, road repair, etc., can solve the problems of inconvenient mechanized construction, poor adhesion, and disturbance of the concrete surface, and achieve convenient construction and improved performance. Toughness, strong and fast effect

Active Publication Date: 2021-07-06
GUANGZHOU YOUAN GIVIL ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the artificial chiseling method is the most commonly used method in my country's engineering at present. It has the advantages of convenient, simple and fast construction, no need for any mechanical equipment, easy operation, and low cost. However, it also disturbs the original concrete surface. There may be additional micro-cracks, which is not convenient for large-scale mechanized construction, and has disadvantages such as poor adhesion

Method used

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Examples

Experimental program
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preparation example Construction

[0036] A method for preparing concrete for paver, comprising:

[0037] Material preparation step: prepare the raw materials according to the formula ratio;

[0038] Stirring steps: first add the Portland cement, silica fume, rice stone, sand, steel fiber, nano-calcium carbonate, and polypropylene synthetic fiber into the mixing device for stirring, and then add the formula amount of water after stirring evenly. Perform stirring and fluidization, control the stirring speed at 20-30r / min, and stir for 10-15 minutes, and then the special concrete for paver can be obtained.

[0039] A construction method of special concrete for paver, comprising:

[0040] Brushing the interface adhesive step: brushing a layer of interface adhesive on the pre-repaired pavement base;

[0041] Preparation steps of special concrete for paver: prepare special concrete for paver according to the second purpose of the present invention;

[0042] Paving construction steps: Before paving, brush a layer ...

Embodiment 1

[0047] A special concrete for paver, prepared from the following raw materials in parts by weight: 420 parts of Portland cement, 60 parts of silica fume, 670 parts of rice stone, 1000 parts of sand, 30 parts of steel fiber, 45 parts of nano calcium carbonate 8 parts of polypropylene synthetic fiber, 160 parts of water.

[0048] The rice stone comprises the first rice stone and the second rice stone, the diameter of the first rice stone is 2-5mm, the diameter of the second rice stone is 5-10mm, and the weight ratio of the first rice stone and the second rice stone is 1:2.

[0049] The steel fiber includes a first steel fiber and a second steel fiber, the diameter of the first steel fiber is 0.10mm-0.15mm, and the length is 3mm-5mm; the diameter of the second steel fiber is 0.15mm-0.20mm, and the length is 8mm -11 mm; the weight ratio of the first steel fiber to the second steel fiber is 1:3.

[0050] A method for preparing concrete for paver, comprising:

[0051] Material pr...

Embodiment 2

[0058] A special concrete for paver, prepared from the following raw materials in parts by weight: 420 parts of Portland cement, 60 parts of silica fume, 670 parts of rice stone, 1000 parts of sand, 30 parts of steel fiber, 45 parts of nano calcium carbonate 8 parts of polypropylene synthetic fiber, 160 parts of water.

[0059] The rice stone comprises the first rice stone and the second rice stone, the diameter of the first rice stone is 2-5mm, the diameter of the second rice stone is 5-10mm, and the weight ratio of the first rice stone and the second rice stone is 1:2.5.

[0060] The steel fiber includes a first steel fiber and a second steel fiber, the diameter of the first steel fiber is 0.10mm-0.15mm, and the length is 3mm-5mm; the diameter of the second steel fiber is 0.15mm-0.20mm, and the length is 8mm -11 mm; the weight ratio of the first steel fiber to the second steel fiber is 1:2.

[0061] Others are the same as in Example 1.

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Abstract

The invention discloses a special concrete for paver, which is prepared from the following raw materials in parts by weight: 410-430 parts of Portland cement, 40-80 parts of silica fume, 660-680 parts of rice stone, and 950-parts of sand 1050 parts, 25-40 parts of steel fiber, 40-50 parts of nano calcium carbonate, 5-10 parts of polypropylene synthetic fiber, 150-170 parts of water. The invention also discloses a preparation method and construction method of the special concrete for paver. The concrete of the invention can increase the thickness of the concrete once sprayed, and has the characteristics of fast initial strength, high later strength, good impermeability, high bonding strength, high compressive strength, high toughness and convenient construction.

Description

technical field [0001] The invention relates to a concrete, in particular to a special concrete for a paver and a preparation method and a construction method thereof. Background technique [0002] In some new concrete projects and structural maintenance, reinforcement, and renovation projects, the interface bonding between new and old concrete is often involved. The quality of the interface bonding between new and old concrete directly affects the quality of the project. To make the old and new concrete truly work together as a whole, good bonding at the interface between the old and new concrete becomes the key. In many projects, after working for a period of time, cracks will appear on the bonding surface of old and new concrete, and peeling and cracking will also appear in the newly repaired concrete, which will damage the function and safety of the overall structure again, and fail to achieve the desired effect. . [0003] In the prior art, surface treatment methods i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E01C7/14E01C19/48
CPCC04B28/04C04B2111/0075C04B2201/50C04B2201/52E01C7/142E01C7/147E01C19/4833C04B18/146C04B16/0633C04B14/48C04B14/06C04B14/02C04B14/28
Inventor 唐凌炜
Owner GUANGZHOU YOUAN GIVIL ENG TECH CO LTD