Has anyone thought about how the stone steps we often walked through were made? The craftsmanship of the stone steps that we have inadvertently walked through actually condensed the hard work of our ancestors. We are going to understand the stone steps now. Construction techniques so that we can cherish the present society more conveniently!
Process: base treatment - elastic line - pre-laying - laying - jointing - cleaning main construction technical measures: 1, basic treatment: stone construction on the ground base layer of ash, floating ash and other debris Clean up and clean with a wire brush or steel flat shovel. Brush a layer of cement paste on the floor before construction. The basic treatment should pay attention to the requirements of the construction conditions. Considering the need of the decorative thickness, the ground should be wet with clean water before the formal construction, but there is no water.
2, the elastic line: in the center of the field to play a vertical cross control line, to check and control the position of the stone plate, the cross line can be played on the ground and always the bottom of the wall. After the crosshairs are ejected on the ground, the stone grid lines are popped on the ground according to the stone specifications.
3, pre-shop: First of all, in the design of the drawings design requirements, the stone color, texture, geometric size, surface leveling, etc. should be strictly selected, and then pre-lay according to the drawings. Adjust and exchange the errors that may occur in the pre-shop until the best results are achieved. At the same time, attention should be paid to the light-colored stone and the stone with a lower density. The coating should be applied on the back and all sides to prevent the water from affecting the surface of the stone when the stone is paved.
4, paving: bonding layer: before the paving mortar to clean the base layer, spray water with a watering can wet, brush the cement slurry (water-cement ratio of about 0.5 to do with the brush).
Paving mortar layer: Determine the thickness of the screed layer according to the horizontal control line on the ground, and control with the cross line vertical and horizontal. The stone inlay should be made with 1:4 (1:3) dry hard mortar after thorough mixing and evenly (required dry mortar) The hardness is not loose when the hand is kneaded. The dry hard mortar that has been stirred is laid on the ground, and the gray board is used to shoot. It should be noted that the width of the mortar should exceed 1/3 of the width of the stone, and the thickness of the mortar should be higher. The horizontal elevation is 3~4mm, and the mortar thickness is controlled at 30mm.
Paving stone: before the paving, the board is pre-soaked and then dried in the shade. First, try the paving. For the vertical and horizontal joints, use the rubber to hit the mat board (do not hit the stone board directly with a rubber hammer), and then tap the mortar to the laying height. Move the board aside to check whether the upper surface of the mortar is in agreement with the plate. If there is any emptiness, fill the dry hard mortar and then formally lay it. Fill the mortar layer with a layer of plain cement with a water-cement ratio of 0.5. When placing it, drop the corners at the same time, use a rubber mallet or a wooden hammer to lightly hit the board, use a level ruler to control the paving level, and then install the order. shop.
According to the requirements of the seam: the seam of the stone plate should be tight when it is paved, and generally no gap is left.
5, wiping seam: 1~2 day and night after the paving is completed, grouting and jointing. In the cement slurry, according to the color of the stone, the same color of the mineral pigment is uniformly prepared into a 1:1 thin cement slurry, which is filled into the gap by the pulp pot or the cement is mixed with the dry cement. After completion, the cement slurry of the stone surface is cleaned and cleaned with cotton thread.
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