High early and final strength cement

super high strength,very early strength,fast setting time,low alkali,rapid hardening,frost and corrosion resistance,anti-water

Rapid Hardening Cement Notice in usingrapid hardening cementsRapid Hardening cement is similar to Portland cement in color and most mixing and use procedures.When rapid hardening cement is used in any temperature different than the normal 20°C(70°F), special attention should be made to the setting time limitations and requirements.Field test should be made to fine-tune the water/cement ratio and the retarder percentage to be used to reflect the temperature, humidity and job conditions.Calculated amount of retarder should be mixed with water prior to concrete mixing.Rapid Hardening Cement is produced by grinding sulpho-aluminate cement clinker, consisting of essentially anhydrous calcium sulphoaluminate. Suitable gypsum shall be blended with clinker during manufacture of rapid hardending cement. Besides the high early strength property as fast setting cement, rapid hardening cement has some other characters such as low alkalinity, small expansive ratio, short stability time and small dry-shrinkage rate, compounded with glass fiber. Rapid hardening cement has high strength retaining ratio and longer work-time, so it is the special cement for making GRC products. And it is also named as low alkalinity rapid hardening cement.Rapid Hardening Cement Main Applications: This low alkali rapid hardening cements can be used to produce light-weight slab of internal and external wall, and GRC products Rapid Hardening Cement Techinical Data Sheet: Specific surface area: not less than 400 M2/KG.2.Setting time: Initial set>=25min, Final set<= 180min. It can be changed according to customer's request.2. AlkalinityIn cement slurry of water cement ratio 1:10, one hour’s PH value≤10.5 3. Free expansive ratio:Under the condition cement/sand=1:0.5, the free expansive ratio is 0.00%-0.15% in 28 days.

Rapid Hardening Cement Package: Rapid hardening cements is available 1 ton-jumbo bag.

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High early and final strength cement