High Strength Self-leveling Cement
High strength self-leveling cement is a one component material composed of inorganic bonding material, natural mineral powder and polymer additives. It can be applied to the self-leveling of floor, the second time leveling of the substrate, self-leveling for final finishing and the repair for old floor, dusting floor or disqualified floor. It has good flow-ability, good stability, good flexibility, high early flexural and compressive strength, high bonding strength and high durability.
Performance feature:
1. Stable property, not be influenced by time, temperature and humidity;2. Excellent flow-ability, can self-leveling;3. Applied to seamless floor, low shrinkage;4. Can supply the density of substrate, enhance the uniformity of floor and supply the sound insulation. Application of self-leveling cement:
1. Materials: bonding agent, self-leveling cement;
2. Tools: grinder, portable grinder, high power cleaner, large-surface scrapper for self-leveling, de-foam roller, wool roller, spiked shoes, electric drill, stirrer, mixing tank, water-measuring container, etc.
3. Construction process:
(1)Treatment of Substrate: The laitance on the substrate should be cleaned by some proper machine, such as sand blasting machine or milling machine, grinder, etc. Any contamination, such as oil, paint, grease, etc, which may do harm to the adhesion between substrate and the bonding agent, should be cleaned using proper agent. The substrate should keep clean.(2)Coating bonding agent: Dilute bonding agent with water by ratio 1:1 (or according to the PDS of bonding agent); then coating by wool roller, coating twice for those high absorptive substrate; then dry approx. 0.5-2hours in accordance with the floor condition, the site condition, temperature, humidity, etc. When the surface remains wetting and without puddle of the liquid, can the self-leveling cement be applied. (3)Mix the self-leveling cement and water according to material supplier’s directions;(4)Placing the mixture in batches and in order to the floor , let it flows/self-leveling just like water; Serrated scraper is necessary for the control of thickness if the designed thickness is less than 4mm.(5)De-foaming in one direction with de-foaming roller to avoid of air bubbles, sponge surface, and discrepancy in elevation of interface. (6)Close doors and windows after construction to avoid strong wind and direct sunshine. Foot traffic in 12 hours is forbidden. (7)Fine grinding with burnisher after 12 hours if needed to make the self-leveling surface more smooth, flat.
4. Can add nano-photocatalyst, anion emitting material or nano- antibacterial material into the self-leveling cement according to the specification of customer or the requirement of application place to get air-cleaning or antibacterial functions.
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