There are so many concrete admixtures, such as retarder and reducing agent, what are their functions?
1. The working principle of concrete water-reducing agent: Water-reducing agent is usually a surfactant, which is an anionic surfactant. It is adsorbed on the surface of cement particles so that the p…
What are the main components of concrete retarder, and what are their main functions?
There are many kinds of retarder, including sugar, lignosulfonate, hydroxy acid, inorganic salt and so on. Set Retarder is an additive that reduces the hydration rate and heat of hydration of cement o…
What should I do if the amount of retarder is too large? What impact will it have? Is there any solution
Concrete admixtures, referred to as admixtures, refer to substances added to improve and adjust the properties of concrete. Since admixtures can improve and adjust the properties of concrete, admixtur…
The difference between retarder and accelerator, and under what circumstances should they be used?
Accelerating setting agent Accelerating setting agent is an admixture that can quickly set and harden concrete. The main types of accelerators are inorganic salts and organic substances. The commonly …
If 100 cubic meters of concrete plus retarder requires a retarding time of 6 hours, how much retarder should be used?
The dosage of retarder should be determined based on experiments. For example: Calculated based on four ten thousandths of the cementitious material, assuming 400*0.0004=0.16kg/m3 Then 100 cubic meter…
What is the difference between high-efficiency retarder and retarder, and what are their benefits?
The role of high-efficiency retarder is to maintain good slump and fluidity of concrete. Set Retarder is an additive that reduces the hydration rate and heat of hydration of cement or gypsum and prolo…
What are the main components of concrete retarder?
The types of cement retarder can be divided into two categories: inorganic retarder and organic retarder according to their chemical composition. From the perspective of molecular weight or synthesis …
What are the common reasons for using retarder?
High-efficiency retarder is mainly a concrete admixture composed of retarder, air-entraining and other components, and has the properties of super plasticization, high water reduction, and good water …
What is the purpose of adding retarder and water reducing agent to pumped concrete?
1. Retarder: Pumped concrete mostly uses commercial concrete, which requires small slump loss. Especially for large-volume concrete or concrete constructed at high temperatures in summer, retarder mus…
Are concrete retarder and early strength agent mutually exclusive? Why should they be used?
Concrete retarder delays the initial setting time of concrete, that is, it inhibits the hydration rate of cement. Early strength additives increase the hydration rate and facilitate the early improvem…
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