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Types and functions of concrete admixtures

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(1) Ordinary water reducing agent: Under the condition that the slump of the concrete is basically the same, it can reduce the amount of water for mixing.
(2) High-efficiency water reducing agent: Under the condition that the slump of the concrete is basically the same, it can greatly reduce the amount of water for mixing, or under the same conditions of water, it can greatly improve the coagulation
Soil fluidity admixture.
(3) Early strength agent: accelerates the early strength development of concrete.
(4) Retarder: Prolong concrete setting time.
(5) Air-entraining agent: An admixture that can introduce a large number of uniformly distributed, stable and closed micro-bubbles during the mixing of the concrete and can be retained in the hardened concrete.
(6) Accelerator: An admixture capable of rapidly setting and hardening concrete.
(7) Early strength water reducing agent: It has both early strength and water reducing functions.
(8) Retarding water reducing agent: It has the function of retarding and reducing water.
(9) Retarding and superplasticizer: It has both retarding and drastic reduction functions.
(10) Air-entraining water reducing agent: It has both air-entraining and water-reducing functions.
(11) Waterproofing agent: It can improve the permeability of cement mortar and concrete and reduce the water permeability of concrete under hydrostatic pressure.
(12) Rust inhibitor: inhibit or reduce the corrosion of steel bars or other embedded metals in concrete. (13) Air-entraining agent: A large number of air holes are formed in the concrete due to chemical reactions that occur during the preparation of the concrete.
(14) Expansion agent: It causes concrete to expand in volume.
(15) Antifreeze: Harden the concrete at negative temperature and achieve sufficient antifreeze and strength within a specified time.
(16) Colorant: Preparation of concrete with stable color.
(17) Pumping agent: Improves the pumping performance of concrete mixtures.
(18) Water retaining agent: an admixture that can enhance the water retaining capacity of concrete.
(19) Preservative: an admixture that can shorten the coagulation time of the mixture.
(20) Flocculant: An admixture that can enhance the viscosity of concrete and resist the separation of cement and aggregates when it is used in water.
(21) Shrinkage reducing agent: admixture to reduce concrete shrinkage.
(22) Plasticizer: admixture to reduce the slump loss of concrete in a certain period of time.
(23) Thickener: An admixture that can increase the viscosity of the concrete mixture.

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