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The Importance Of Gypsum Retarder
Gypsum retarder is an important additive to building materials. Commercial gypsum retarders are mainly composed of four types: organic acids, phosphates, protein, and composite retarders. Although the effects of organic acids and phosphates have better retarding performances, there is still an obvious shortcoming that the mechanical strength reduces largely with time going by. Protein-based retarders prolong the setting time of hemihydrates with less strength loss and higher costs. The gypsum retarder from waste mycelium, a protein-rich raw material, solved the problem of the disposal of waste mycelium from anti-biotic plants, while producing a high-quality retarder for gypsum, and shows potential for the future.
Superplasticizer for concrete
Superplasticizers (SPs) are also known as high- range water reducers that are additive used in making high strength concrete. Plasticizers are chemical compounds that enable the production of concrete with approximately 15% less water content. Superplasticizers allow a 30% or more reduction in water content.
It is chemical admixtures that are added to the concrete to improve their flowing ability, they help to reduce the amount of water in the concrete and to improve the strength and durability of concretes.
They achieve a reduction in water content without loss of workability.
It is chemical admixtures that are added to the concrete to improve its flowing ability, they help to reduce the amount of water in the concrete and to improve the strength and durability of concretes.
They achieve a reduction in water content without loss of workability.