Our range of products include tamcem hca (liquid admixture for controlled concrete hydration).
TamCem HCA (Liquid Admixture for Controlled Concrete Hydration)
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TamCem HCA is a liquid additive for all fresh concrete and grout mixes where extended “open-time” becomes a crucial requirement for the construction process time frame. The product is designed to efficiently control cement hydration to allow for extended waiting times or delays on site, or readymix concrete transportation times. TamCem HCA eliminates the amount of rejected concrete due to loss of workability and helps contractors to stay within or even reduce the initially calculated material budget.TamCem HCA is a high performance hydration control admixture for all wet sprayed concrete. It can be used in tunnelling applications where low rebound and high performance in combination with TamShot alkali-free accelerator is needed.By adjusting the dosage, setting times of fresh concrete can be extended, giving an open-time typically in the range of 4 to 8 hours, but can be extended up to 2 days if required.TamCem HCA meets EN 934-2 requirements for set retarding admixtures, EN 934-5 requirements for consistence control admixtures and ASTM C-494 requirements for Type B, retarding and Type D, water reducing and retarding admixtures.