Wall mosaic construction technology and mosaic map

2022-07-22
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When it comes to wall mosaics, people will not feel strange. As early as the early 1980s, it was the materials used by many families to lay the walls and floors of toilets. Today, wall mosaics have made a comeback and become the darling of decorative materials with colorful forms, which are favored by avant-garde and fashionable families. Now let's take a look at the construction technology of wall mosaic and some mosaic maps

wall mosaic is one of the oldest decorative arts known. It is a pattern created by using small tiles or pottery chips. In modern times, wall mosaic is more of a kind of ceramic tile. It is a kind of brick with a special way of existence, which is generally composed of dozens of small bricks to form a relatively large brick. It is widely used in indoor small area floors, walls and outdoor large and small walls and floors because of its small size and colorful characteristics. Due to its small size, wall mosaic can make some jigsaw puzzles to produce a gradual effect

construction technology of wall mosaic

I. material preparation

⑴ cement: Ordinary portland cement or slag Portland cement of No. 325 or above

⑵ white cement: 325 white cement (for joint wiping)

⑶ medium sand

⑷ lime paste: when used, the lime paste should not contain immature particles and impurities. (if lime powder is used, it should be soaked in water one week in advance.

(5) ceramic and glass mosaic tiles (wall mosaic): the variety, specification and color should be in accordance with the design regulations, and there should be a product certificate

II. Process flow

base treatment → Paste ash cake and make screeds → Wet substrate → Plastering bottom mortar → Plaster the middle layer mortar → Pre arranged grid snapping line → Tiling → Wetting tissue → Uncovering and sewing → Wipe the seam → Joint cleaning

III. operation process

⑴ when the base course is a concrete wall cylinder surface: for the base course with smooth surface, it should be roughened first, brushed with steel wire, and then wetted with water. The base course with smooth surface shall be “ Roughening treatment. Clean up the dust and dirt on the surface, wet it with water, spray with 1:1 cement fine mortar, or throw the mortar onto the smooth base surface with a brush. The throwing point shall be uniform, and then watering and curing shall be carried out after final setting until the cement mortar has high strength and cannot be broken by hand

⑵ plastering: hang vertically, find rules, paste ash cakes, and make screeds. When hanging vertically and finding rules, the symmetry of the arrangement method of brick facing with the windowsill, waist line, external corner and other parts of the wall and the squareness of the paving of indoor ground blocks should be comprehensively considered to strive for overall perfection

⑶ pre arrange brocade bricks (mosaic) and snap lines. According to the color sample requirements of the design drawings, bricks of the same classification and specification shall be pasted on the surface of a room and a whole wall and column, and the arrangement of bricks shall start from the inner corner and stop at the outer corner (closing); From the ceiling to the ground (closing); For parapets, window tops, windowsills and various waist lines, the top bricks should be covered with facade bricks to prevent water seepage and hollowing; If there is no drip line in the design, the front bricks of various waist lines of the outer wall should protrude about 3mm downward, and the bricks at the bottom of the line should wing inward about 3 ~ 5mm, so as to facilitate dripping

⑷ veneering

1) hard bottom paving method:

a. after the final setting of the base ash (usually the next day), re water and wet, fully coat the cement paste on the parts to be tiled, and use a wood trowel to hit the cement paste to a uniform thickness (the thickness should be 1 ~ 2mm)

b. Dip water with a brush, wipe the dust off the surface of the brick, fill the seams of the mosaic with white cement paste with an iron trowel (or mix an appropriate amount of fine sand and white cement into a slurry), and then paste it on the wall. When pasting wall mosaics, pay attention to the regularity of patterns and make mistakes. After the bricks are pasted, the iron trowel shall be used to compact them to make them stick firmly and correct them

c. After the brocade brick (wall mosaic) is pasted firmly (about 30 minutes later), dip water with a brush, wipe the paper wet, and remove the paper

d. Check whether the size of the seam is uniform and smooth, and timely adjust and pat the skewed seams with different widths. The joint adjustment sequence should be carried out horizontally first and then vertically

2) soft bottom paving method:

a. leave about 8 ~ 10mm thick as a wet ash layer when plastering the bottom mortar

b. Water and wet the bottom ash surface, trowel the bottom ash according to the screeding (subject to the paving area of the current shift), scrape it with a pressure gauge, roughen and compact it with a wooden trowel

c. When the bottom ash surface is dry to about 80%, pave according to the hard bottom paving method. The soft bottom paving method is generally applicable to the construction of large areas of exterior walls, and its characteristic is beneficial to the flatness control

IV. key points of construction

when dealing with the base course, all kinds of dirt on the wall should be cleaned up and watered one day in advance. The raised part of the concrete wall shall be chiseled off, and the base course shall be roughened to clean the floating ash. Or roughen with 107 glue cement mortar. After plastering the primer, when the bottom layer is 60-70% dry, arrange bricks and snap lines

before formal pasting, standard points must be pasted to control the flatness of the pasted surface. During operation, the flatness should be checked with a guiding rule at any time. If it is uneven or not straight, it should be removed and re pasted. Before the wall mosaic is pasted, it must be soaked in clean water for more than two hours, subject to the fact that the bricks do not bubble, and then taken out and dried for use. In case of pipelines, lamp switches, supports of toilet equipment, etc. during paving, the whole brick must be cut and matched. After inlaying, wipe the surface with cotton thread, and then wipe the joint with white cement slurry. Or use special adhesives, and use special caulking paste for caulking

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