Raidy products are used at low temperaturesKey points of the guide.
If conventional Portland cement screeds, thin-bottom adhesives, caulks and plasters fall below freezing point just after application, their internal structure will be permanently damaged. When the water contained in the mortar turns into ice, it will cause the internal gel structure of Portland cement to crack, which will seriously affect the strength, flexibility and durability in the later stage.
Subsequent repairs to damaged areas will be complex and will cause delays. Construction is not recommended in this case.
Even if the temperature is not below freezing, the hydration rate and strength of Portland cement develop more slowly in the range of 0 4, and the curing time needs to be longer than at room temperature. A simple "rule of 10" can be followed, i.e. the curing time of Portland cement and epoxy cementitious materials can be extended to twice as long for every 10 times the application temperature below 21 room temperature.
For example, at room temperature21, it needs to be cured for 7 days to withstand light loads. Due to the effects of low temperatures, the curing time needs to be extended according to the 10 rules mentioned above. Larger ceramic tiles and stones should also be cured for a longer time when they are constructed at low temperatures. Corresponding protective measures should be added to the construction environment.
Transportation and storage
For best results, keep above 0 for shipping and storing installation materials so they can be used whenever needed.
If a Red-Emperor emulsion additive or liquid coating product freezes, thaw it completely before use. Allow the product to rise to room temperature of about 21 C. Stir well before use or before mixing with thin-bottom mortar, caulk and other Portland cement mortars.
Placed at a low temperature, the unopened barrel can be soaked in hot water until the temperature rises completely. Keep waterproofing membranes, crack resistant and acoustic insulation products within the temperature range required for their respective use. Polymer-reinforced, thin-bottom mortars and caulk products must be stored at an appropriate temperature for 24 hours before use.
Construction
Construction is carried out during periods of high daytime temperatures. As far as possible, ensure that the base surface temperature is within the recommended temperature range for the installation and maintenance of the Rae-T帝 product. More information can be found in the Ray帝 product brochure and construction instruction document. Generally speaking, the recommended construction temperature of cement-based products (such as adhesives, tile adhesives, cement-based waterproofing materials, cement-based caulks, etc.) is 5 32.
During installation and maintenance, fences are erected and heated in areas that may be exposed to low temperatures. Exhaust gas from temporary heating equipment must comply with the requirements of the Occupational Safety and Health Management Unit and local building regulations. After the construction is completed, any light and heavy loads are prohibited until the maintenance is completed.
Maintenance
Because Portland cement develops slower hydration rate and strength at low temperatures, the curing time is longer than at room temperature. After the construction is completed, any light and heavy loads are prohibited until the maintenance is completed. For example, at room temperature 21, it can be maintained for 7 days. Due to the low temperature, it is necessary to extend the curing time according to the 10 rules mentioned above.
It should be reminded that the maintenance time of ceramic tiles and stones with larger sizes should also be extended when they are constructed at low temperatures. Corresponding protective measures should be added to the construction environment.
For example, the Tile Installation Manual of the North American Tile Association (TCNA) has installation instructions under the heading "Protecting Newly Laid Tiles": "Builders shall provide 19 mm thick plywood or OSB board and lay on unstained kraft paper to protect the tile floor during the curing of the installation material." In addition, for applications that contain multiple layers of structural layers (e.g. screeds, waterproofing, sound insulation, crack resistance, epoxy caulk, etc.), each layer must be cured before the next step can be applied.