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A 3D printing equipment and construction method for cement concrete pavement

A cement concrete and 3D printing technology, applied in the field of road paving, can solve the problems of difficult to achieve fast, large-scale, long-distance road printing, and achieve the effects of eliminating roughness, eliminating road bubbles, and increasing skid resistance.

Active Publication Date: 2022-03-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing 3D printing equipment is mainly used in building structures and prefabrication of structural components, and it is difficult to achieve fast, large-scale, long-distance road printing

Method used

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  • A 3D printing equipment and construction method for cement concrete pavement
  • A 3D printing equipment and construction method for cement concrete pavement
  • A 3D printing equipment and construction method for cement concrete pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1-5 As shown, this embodiment provides a cement concrete pavement 3D printing equipment, including vehicle-mounted system 2, batching system, control system, printing system and leveling system, wherein,

[0040] The vehicle-mounted system is equipped with a batching system, which is connected to a printing system. The printing system is equipped with a control system. The concrete is laid on the road through the printing system and the control system. The printing system is equipped with a leveling system. The paved road surface is leveled. The vehicle-mounted system is an existing vehicle equipment, which is driven by crawler-type electric drive wheels 3 .

[0041] The printing system includes a servo drive mechanism, a mechanical arm drive mechanism and a forming mechanism;

[0042] The servo drive mechanism includes a hydraulic cylinder 4, a hydraulic motor 5, a guide rail drive device 8 and a linear slide rail 34. The bottom of the vehicle system ...

Embodiment 2

[0057] A construction method for cement concrete pavement 3D printing equipment, the operation steps are as described in Example 1, the difference is that in step (2), the materials required for the concrete 24 are as follows: each cubic meter of concrete includes the following components by weight: 330-360kg of cement, 140-160kg of fly ash, 175-185kg of water, 750-800kg of river sand, 860-900kg of gravel, 0.18-0.23kg of air-entraining agent, 0.06-0.12kg of high-efficiency water reducing agent and thickening rheology Dosage 0.20-0.46kg.

[0058] The cement is Portland cement P·I42.5, and the fly ash is Class F fly ash with an average particle size of 24 μm, which is used to improve the fluidity of the concrete, and the usage amount reaches 40% of the cement, and the fine aggregate is river sand. The fineness modulus of river sand is 2.95-3.36, the specific gravity is 2.6-2.65, the water absorption range of river sand is 1.09-2.32, the particle size range of river sand is 0-4.7...

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Abstract

The invention relates to a cement concrete pavement 3D printing equipment and a construction method, belonging to the technical field of pavement paving. The equipment includes vehicle-mounted system, batching system, control system, printing system and leveling system. Among them, the batching system is set on the vehicle-mounted system, the batching system is connected to the printing system, and the printing system is equipped with a control system. Through the printing system and the control system, the Concrete is laid on the road surface, and the printing system is equipped with a leveling system, which can level the road surface paved with concrete. The invention combines 3D printing technology with concrete pavement technology, uses a mechanical arm to replace the portal steel frame used by traditional 3D printing machines, realizes the three-dimensional movement of the machine, and installs the mechanical arm on the vehicle-mounted system, so that the machine can Moving around makes the printing area unrestricted, realizing large-scale, integrated and fast printing construction on the road.

Description

technical field [0001] The invention relates to a cement concrete pavement 3D printing equipment and a construction method, belonging to the technical field of pavement paving. Background technique [0002] Cement concrete pavement is mostly used on low-grade highway pavement, and still has broad application prospects in our country. The pavement construction is mostly paved by three-roller machines and small machines. However, this type of technology requires a vibrator to vibrate, resulting in poor road surface roughness and affecting driving comfort. At the same time, this type of paving method needs to erect the formwork before construction, and the formwork needs to be removed after construction, which wastes a lot of construction time and human resources, and reduces the construction efficiency. [0003] 3D printing technology has begun to be used in the field of concrete due to its advantages of rapid prototyping and integration. Its technology of constructing object...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C19/48E01C19/47E01C19/46
CPCE01C19/48E01C19/4866E01C19/47E01C19/475E01C19/46E01C19/466E01C2301/02E01C2301/04E01C2301/08
Inventor 葛智王聿梁张洪智孙仁娟管延华凌一峰
Owner SHANDONG UNIV
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