Stone paving method in seawall mounting project

Abstract

The invention discloses a stone paving method in seawall mounting engineering, which comprises the following steps of: 1, cleaning a base layer, namely cleaning accumulated dust and sundries on the surface of a concrete layer or a cement-stabilized layer; 2, leveling and line snapping are conducted, specifically, according to a design drawing, the elevation and the plane axis are close to the interior of an elevation control point; thirdly, trial splicing and trial arrangement are carried out, wherein trial splicing is carried out on each stone according to the orientation and the angle before laying; before formal paving, one-time trial arrangement is carried out; fourthly, mortar is laid, specifically, the mortar virtual laying thickness is determined according to the horizontal line, a cross curve is drawn, and mortar can be laid; 5, paving stones, namely turning over the plates after the plates are paved to be qualified, and checking whether a mortar bonding layer is flat and dense; supplementing the mortar; sixthly, crack pouring and crack wiping are conducted, specifically, after paving is completed, thin cement paste is put into a small-nozzle paste pot and slowly poured into gaps between the plates; seventhly, covering and maintaining are conducted, specifically, geotextile or clean fine sand is used for covering, and water spraying and maintaining are conducted; the stone paving device has the advantages that the engineering construction efficiency is improved, and the stone paving quality is also improved.

Description

Technical Field

[0001] The invention relates to a construction method in a seawall safety project, and in particular to a stone paving method in a seawall safety project. Background Art

[0002] The Seawall Safety Project is a comprehensive marine engineering project that aims to protect coastal areas from seawater intrusion, maintain the stability of the coastline, and protect the ecological environment. The Seawall Safety Project builds seawalls, which are sea retaining walls made of a certain material (such as concrete) located at the junction of the coastline and the seawater to prevent wave impact and seawater erosion, thereby maintaining the stability of the coastline and the balance of the ecological environment.

[0003] During the construction of the seawall safety project, a large amount of stone paving is required. The existing problems in paving are as follows: (1) The paving area is large. When several areas are constructed at the same time, it is easy to cause misalignment and height differences when they are combined, which affects the quality of the project. (2) Due to the heavy weight of the stone, it is difficult to carry it manually. (3) Since the stone itself is heavy and thick, the effect of using a rubber hammer to hit it during paving may not be good. (4) When using the horizontal mortar method for construction, the mortar density under each stone is different after hitting, which is easy to cause different post-settlement amounts and cause height differences between slabs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a stone paving method in a seawall safety project in view of the deficiencies in the prior art.

[0005] In order to achieve the above object, the measures taken by the present invention are:

[0006] A stone paving method in seawall safety engineering,

[0007] The first step is to clean the base layer: clean up the dust and debris on the surface of the concrete layer or water-stabilizing layer;

[0008] The second step is leveling and marking: follow the elevation control points in the design drawings to draw the elevation and plane axis; before paving each 5m×5m square, first lay a reference stone at each of the four corners according to the position and elevation, and then lay a reference stone on each of the north and south sides; after measuring and checking, after the elevation and position are correct, proceed with subsequent large-scale paving;

[0009] The third step is trial assembly and trial arrangement: Before paving, each stone is tested according to the orientation and angle; after trial assembly, they are numbered in two directions, and then arranged neatly according to the numbers; to check the gaps between the plates, check whether the position of the plates is consistent with the design drawings; before formal paving, a trial arrangement should be carried out;

[0010] Step 4: Mortar: The mortar layer for 100mm thick plates is 30mm, and the mortar layer for 30 or 50mm thick plates is 20mm. Determine the virtual mortar thickness according to the horizontal line, draw the cross line, and then you can lay the mortar;

[0011] Step 5, stone paving: dust the stone before paving, soak it and dry it in the shade for later use; when trial paving the slabs, align the vertical and horizontal joints of the slabs placed at the paving position; use a prefabricated hammer to gently tap the middle of the slab to vibrate and compact the mortar, and hammer it to the paving height; after the slabs are qualified for trial paving, turn over the slabs to check whether the mortar bonding layer is flat and dense; add mortar, pour a layer of plain cement slurry with a water-cement ratio of 0.5 on the cement mortar layer, then gently align the slabs to the original position and put them down, use a rubber hammer to tap the wooden pad placed on the slabs to make the slabs flat, use a level ruler to level according to the horizontal line, and then lay them in sequence to the sides and back;

[0012] Step 6: Filling and wiping the seams: After paving, use a 1:1 diluted cement slurry with white cement and pigment similar to the color of the board according to the color of the board. Put it into a small-mouthed slurry pot and slowly pour it into the gaps between the boards. Use a horn scraper to feed the slurry flowing on the seam edge into the seam until it is full. The seam width is 2 mm. After 1 to 2 hours, use a cotton ball dipped in the slurry to wipe the seam until it is flat and smooth.

[0013] Step 7: Covering and curing: 24 hours after grouting and wiping, cover with geotextile or clean fine sand, and spray water for curing for no less than 7 days;

[0014] In the first step of cleaning the base layer, the local unevenness of the concrete layer or the water-stable layer is chiseled flat and the concave parts are filled;

[0015] In the fourth step, the mortar is made of 1:3 dry hard cement mortar. After laying, it is scraped with a large bar, compacted, and leveled with a trowel. The thickness is 2 to 3 mm higher than the horizontal line.

[0016] In the fifth step, check at any time during paving. If any gaps are found, lift the board and fill it with mortar before paving;

[0017] At the end of the sixth step, the slurry adhering to the stone surface is wiped off with a cotton ball.

[0018] The beneficial effects of the present invention are as follows: it is convenient for large-area paving and simultaneous construction of multiple areas, effectively avoiding the phenomenon of misalignment during joining, improving engineering construction efficiency, and also improving the quality of stone paving. DETAILED DESCRIPTION

[0019] A stone paving method in seawall safety engineering,

[0020] The first step is to clean the base layer: clean the dust and debris on the surface of the concrete layer or water-stabilizing layer; this cleaning can be done by flushing with a high-pressure water gun.

[0021] The second step is leveling and marking: follow the elevation control points in the design drawings to draw the elevation and plane axis; before paving each 5m×5m square, first lay a reference stone at each corner according to the position and elevation, and then lay a reference stone on the north and south sides; after measurement and inspection, when the elevation and position are correct, proceed with subsequent large-scale paving; in this way, adopt segmented construction and organize and implement it in an overlapping flow operation mode, which is convenient for large-scale and multi-regional construction at the same time to improve the progress of the project.

[0022] The third step is trial assembly and trial arrangement: before paving, each stone should be trial assembled according to the direction and angle; after the trial assembly, they should be arranged according to the numbers in two directions, and then arranged neatly according to the numbers; to check the gaps between the plates, check whether the positions of the plates are consistent with the design drawings; before formal paving, a trial arrangement should be carried out; this step is conducive to improving the quality of paving and avoiding unevenness.

[0023] The fourth step, mortar: the mortar layer for 100mm thick board is 30mm, and the mortar layer for 30 or 50mm thick board is 20mm. Determine the virtual thickness of the mortar according to the horizontal line, draw the cross line, and then you can lay the mortar; according to the different thickness of the board, its weight is different, and the required thickness of the mortar layer is also different.

[0024] The fifth step is stone paving: dust the stone before paving. After dust removal, it can effectively prevent it from falling off. After soaking, dry it in the shade and set it aside. When trial paving the slabs, align the vertical and horizontal seams of the slabs placed on the paving position. Use a prefabricated hammer to gently tap the middle of the slab to vibrate and compact the mortar, and hammer it to the paving height. After the trial paving of the slabs is qualified, turn over the slabs to check whether the mortar bonding layer is flat and dense. Add mortar, pour a layer of plain cement slurry with a water-cement ratio of 0.5 on the cement mortar layer, then gently align the slab to its original position and put it down. Use a rubber hammer to tap the wooden pad on the slab to make the slab flat. Use a spirit level to level it according to the horizontal line, and then lay it in sequence to both sides and back. Add a process of adding mortar after turning over the slabs to improve the laying quality.

[0025] Step 6: Filling and wiping the seams: After paving, use a 1:1 diluted cement slurry with white cement and pigment similar to the color of the board according to the color of the board. Put it into a small-mouthed slurry pot and slowly pour it into the gaps between the boards. Use a horn scraper to feed the slurry flowing on the seam edge into the seam until it is full. The seam width is 2 mm. After 1 to 2 hours, use a cotton ball dipped in the slurry to wipe the seam until it is flat and smooth.

[0026] Step 7: Covering and curing: 24 hours after grouting and wiping, cover with geotextile or clean fine sand and spray water for curing for no less than 7 days.

[0027] In the first step of cleaning the base layer, the local unevenness of the concrete layer or the water-stabilizing layer is chiseled flat at the convex parts and filled at the concave parts, and then washed with a high-pressure water gun.

[0028] In the fourth step, the mortar is made of 1:3 dry hard cement mortar. After laying, it is scraped with a large bar, compacted, and leveled with a trowel. The thickness is 2 to 3 mm higher than the horizontal line.

[0029] In the fifth step, check at any time during paving. If any gaps are found, the board should be lifted up and filled with mortar before paving.

[0030] At the end of the sixth step, the slurry adhering to the stone surface is wiped off with a cotton ball.

[0031] During the use of this application, the elevation shall be positioned and calibrated and the base shall be reviewed. The pavement shall be positioned and calibrated according to the design drawings. The base surface shall be reviewed and repaired if it does not meet the requirements. The pavement brick reference points and reference lines shall be set according to the paving plan design drawing. The pavement brick reference points shall be set at the edge of the curb. Two mutually perpendicular pavement brick reference lines shall be set through the pavement brick reference points, and the angle between one of the reference lines and the curb stone reference line should be 0° or 45°.

[0032] Set up two or more pavement brick reference points. When paving pavement bricks at the same time, according to the scale of the project and the shape and size of the pavement bricks, it is advisable to set up vertical and horizontal parallel pavement brick reference lines with a spacing of 5 to 10m.

Claims

1. A stone paving method in a seawall safety project, characterized in that: The first step is to clean the base layer: clean up the dust and debris on the surface of the concrete layer or water-stabilizing layer; The second step is leveling and marking: follow the elevation control points in the design drawings to draw the elevation and plane axis; before paving each 5m×5m square, first lay a reference stone at each of the four corners according to the position and elevation, and then lay a reference stone on each of the north and south sides; after measuring and checking, after the elevation and position are correct, proceed with subsequent large-scale paving; The third step is trial assembly and trial arrangement: Before paving, each stone is tested according to the orientation and angle; after trial assembly, they are numbered in two directions, and then arranged neatly according to the numbers; to check the gaps between the plates, check whether the position of the plates is consistent with the design drawings; before formal paving, a trial arrangement should be carried out; Step 4: Mortar: The mortar layer for 100mm thick plates is 30mm, and the mortar layer for 30 or 50mm thick plates is 20mm. Determine the virtual mortar thickness according to the horizontal line, draw the cross line, and then you can lay the mortar; Step 5, stone paving: dust the stone before paving, soak it and dry it in the shade for later use; when trial paving the slabs, align the vertical and horizontal joints of the slabs placed at the paving position; use a prefabricated hammer to gently tap the middle of the slab to vibrate and compact the mortar, and hammer it to the paving height; after the slabs are qualified for trial paving, turn over the slabs to check whether the mortar bonding layer is flat and dense; add mortar, pour a layer of plain cement slurry with a water-cement ratio of 0.5 on the cement mortar layer, then gently align the slabs to the original position and put them down, use a rubber hammer to tap the wooden pad placed on the slabs to make the slabs flat, use a level ruler to level according to the horizontal line, and then lay them in sequence to the sides and back; Step 6: Filling and wiping the seams: After paving, use a 1:1 diluted cement slurry with white cement and pigment similar to the color of the board according to the color of the board. Put it into a small-mouthed slurry pot and slowly pour it into the gaps between the boards. Use a horn scraper to feed the slurry flowing on the seam edge into the seam until it is full. The seam width is 2 mm. After 1 to 2 hours, use a cotton ball dipped in the slurry to wipe the seam until it is flat and smooth. Step 7: Covering and curing: 24 hours after grouting and wiping, cover with geotextile or clean fine sand and spray water for curing for no less than 7 days.

2. The stone paving method in a seawall safety project according to claim 1, characterized in that: In the first step of cleaning the base layer, the local unevenness of the concrete layer or the water-stable layer is chiseled flat at the convex parts and filled at the concave parts.

3. A stone paving method in a seawall safety project according to claim 1 or 2, characterized in that: In the fourth step, the mortar is made of 1:3 dry hard cement mortar. After laying, it is scraped with a large bar, compacted, and leveled with a trowel. The thickness is 2 to 3 mm higher than the horizontal line.

4. The stone paving method in a seawall safety project according to claim 3 is characterized in that: In the fifth step, check at any time during paving. If any gaps are found, the board should be lifted up and filled with mortar before paving.

5. The stone paving method in a seawall safety project according to claim 4, characterized in that: At the end of the sixth step, the slurry adhering to the stone surface is wiped off with a cotton ball.