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Precautions for customized concrete cutting diamond wire saw china in Pavement Construction

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  • Time of issue:2022-09-15 22:49
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(Summary description)Customized concrete cutting diamond wire saw china are generally installed in hydraulic wall saws, electric disc saws, water drills or road cutting machines and other tools to cut concrete components, walls, roads and other construction technologies. Customized concrete cutting diamond wire saw china has the characteristics of strong cutting ability, static nondestructive, high efficiency, water cooling, no construction dust, etc.

Precautions for customized concrete cutting diamond wire saw china in Pavement Construction

(Summary description)Customized concrete cutting diamond wire saw china are generally installed in hydraulic wall saws, electric disc saws, water drills or road cutting machines and other tools to cut concrete components, walls, roads and other construction technologies. Customized concrete cutting diamond wire saw china has the characteristics of strong cutting ability, static nondestructive, high efficiency, water cooling, no construction dust, etc.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2022-09-15 22:49
  • Views:
Information

Customized concrete cutting diamond wire saw china are generally installed in hydraulic wall saws, electric disc saws, water drills or road cutting machines and other tools to cut concrete components, walls, roads and other construction technologies. Customized concrete cutting diamond wire saw china has the characteristics of strong cutting ability, static nondestructive, high efficiency, water cooling, no construction dust, etc.

For the smooth operation of customized concrete cutting diamond wire saw china, the following points should be noted:

1. Bridge cutting and demolition -- construction preparation

(1) During the construction of precast beam slab and abutment back wall, anchor bars shall be embedded and notches shall be reserved according to the design requirements.

(2) During the installation of beams and slabs, the size of the gap shall be appropriately adjusted on the piers and abutments with bridge expansion joints to meet the width required for the installation of bridge expansion joint devices.

(3) In order to ensure the passage of construction vehicles before paving the asphalt pavement, sand or sandy soil shall be filled in the groove and between the embedded reinforcement. The top surface of the exposed part shall be 1-2 cm higher than the top surface of the embedded reinforcement to protect the reinforcement from being crushed.

(4) Before the construction of bridge expansion joints, it is required to submit a detailed construction organization design plan, which requires careful organization, overall arrangement, clear responsibilities, clear responsibilities, and strict control in accordance with the construction specifications.

(5) Get familiar with the drawings and installation operation procedures, conduct training on construction operation procedures, check the location number of bridge expansion joints, and inspect and accept the straightness, flatness, torsion and spacing of bridge expansion joints.

2. Cutting and Demolition of Bridges -- Transportation of Bridge Expansion Joint Devices

(1) The bridge expansion joint device is generally composed of 4 pieces in a group, which have been fixed when supplied by the manufacturer. The expansion device shall be bundled on the flatbed truck as a whole, and shall be driven slowly when turning to prevent overturning.

(2) The expansion device shall be transported to the bridge construction site according to the classification of each bridge and checked in detail.

3. Cutting and Demolition of Bridges -- Installation of Bridge Expansion Joints

(1) Kerf

After the asphalt paving concrete on the bridge deck is cut and cured, customized concrete cutting diamond wire saw china is used to cut the joint. Before cutting the joint, it is required to test the flatness of the asphalt pavement. When the test results meet the requirements, the width of the groove is determined according to the requirements of the construction drawings, and the accurate measurement and setting out are carried out. Generally, two colored nylon ropes can be pulled as the reference line for cutting the joint, so as to ensure that the size of the cutting joint is accurate and the cutting joint is straight.

(2) Slotting

The air pick shall be used for grooving in bridge demolition and cutting, and the grooving depth shall not be less than 12cm. Firstly, use an air pick to chisel off the asphalt pavement between the two cutting joints. After the bridge expansion joint is grooved, remove all the debris from the slot, and use a high-pressure water gun to wash the remaining residue. The road and bridge concrete pavement beyond the joint cutting line shall be covered with color strip cloth or steel plate for protection before the joint is cut, so that on the one hand, the sundries generated by the slotting can be uniformly placed on it, and on the other hand, the stone powder generated during the joint cutting can be prevented from polluting the pavement.

Bridge demolition and cutting During the use of customized concrete cutting diamond wire saw china, if the compactness of concrete is not enough, the thickness of reinforcement protective layer is not enough or is damaged, it is easy to cause reinforcement corrosion after bridge operation. When the steel bar is corroded, the volume of the corroded part will expand, and the concrete will crack due to squeezing the surrounding concrete, and the section area of the steel bar will decrease, and the bearing capacity of the structure will decrease. In addition, the corrosion of reinforcement will also reduce the grip of customized concrete cutting diamond wire saw china on reinforcement, and the corrosion will flow out, forming rust on the surface of the structure, affecting the beauty of the structure.

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