Regulation before construction
1. Artificial stones should be avoided to roll and collide in transit, which result in dark fissure or some harm to slab. They should be covered with water-proof cloth for the prevention of wetting up while they stack outside.
2. Cement and sand mixture should not be too wet, which will lead to two possibilities.
(1) a layer of vapor film may appear and so artificial stone and sand mixture can not be sticked firmly.
(2) the water under slab is hard to vapor alkalization and continually basify with cement, which bring on eroded slab and appear protrudent end surface and fissure on slab.
3. Cement and sand mixture should be mix round evenly. Uneven sand mixture exist worse configuaration, which result in bad adherence and so it may cause crack on loaded slabs of artificial stones..
4. Because there is a irregular quality of portland cement and counterfeit portland cement in the market, so portland cement's intensity and quality shoud be inspected while it is used for installation.
Installation and Construction Suggestion
Spread on wall
1. Clean the wall by rinse and spade it into flatness.
2. Sweep the wall by cement glue twice.
3. Fix the slab on the wall firmly by iron wire and expansion bolt.
4. Fill up the space between slab and wall by cement and sand mixture in the proportion of 1: 3
5. Get rid of the sand mixture and feculence on the surface of slab
6. If the slab is installed in the sunlit place, then it should be covered with wet cloth 24 hours for maintenance.
If more water are needed in installation, slabs should handled with waterproof and moistureproof measures.
Spread on floor
1. Line out ground baseline and then romove the part that is above the baseline and fill the part that is below the baseline in order to facilitate construction.
2. To make cement and sand mixture in 1:4 proportion of sand to cement with adequate amount of water and mix round evenly into damp-dry condition.
3. Pave the well-mixed cement and sand slurry into the height of 3 - 4 cm approximately, and then place artificial stones on it and adjust its height well.
4. Romove the artificial stones after the height is adjusted well and pare off a layer of special gum on cement and sand slurry. If there is no special gum, high grade black cement can be used to pare off evenly at the bottom of artificial stones.
5. Spread artificial stones on floor and use rubber or wooden gavel to knock stones lightly in order to combine artificial stones with cement and sand slurry thoroughly and tightly and then revise the juncture between level tiles at the same time.
If one or more slates do not level with other slates, then remove them and regulate the bottom level once more. At last, repeat the above 4 and 5 steps.
In general, 2mm juncture is reserved between artificial stone tiles for the convenience of water evaporation and offset of inflating stress. When spreading in large areas, telescopic juncture should be applied in appropriate partition in case the earth's surface and framework will inflate and shrink, which lead to stone's protuberance or fracture.
The juncture can be filled up 3 or 5 day later after completing spreading for bottom sand slurry dry normally. If junctures were filled up rapidly, large amount of water still exist in wall framework and cement and sand slurry, so the process of hydrate will happen in the alkali substance in cement. In the same time, large amount of water vaporize and salt and alkali water disgorge from stone's pores, thus "white crystalloid" appear, which will affect the decorative effect seriously. Special joint mixture for stone or Portland cement should be applied for filling up juncture. After filling up junctures, the overflown joint mixture should be wiped away in time.