Set Adjusting Additive and Admixture

For cement based or gypsum based product like mortar or concrete, set adjustment is so necessary, which is important for ensure the application time and early strength development. There are many types of product to change the initial and final setting time. In some case, Set Retarder is adopted to extend the setting for cement or gypsum including tartaric acid, citric acid, sodium gluconate etc. In other case, Set Accelerator is also critical to shorten the setting time and improve the early strength, such as lithium carbonate, lithium sulphate and calcium formate etc. CSA cement, as fast setting cement, works as fast-setting admixture, which give excellent instant setting effect when used alone or combined with ordinary portland cement. Furthermore, in some fast-setting binder system, retarder and accelerator have to be added together to fine tune the hydration process.