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Admixture for Concrete

Definition: a material other than water, aggregates, cementitious materials, and fiber reinforcement, used as an ingredient of a cementitious mixture to modify its freshly mixed, setting, or hardened properties and that is added to the batch before or during its mixing.- ACI Concrete Terminology


Admixtures are materials added to concrete before or during mixing. Most admixtures are chemicals that change some property of the fresh or hardened concrete. Water, aggregates, cementitious materials (pozzolans and hydraulic cements [fly ash, silica fume, slag cement]), and fiber reinforcement are not considered admixtures.

Types of chemical admixtures include: air-entraining admixtures; accelerating admixtures; retarding admixtures; water-reducing admixtures (normal and mid-range); high-range water-reducing admixtures; and special-purpose admixtures such as pigments, corrosion inhibitors, shrinkage reducers, admixtures for producing flowing concrete, cold-weather admixtures, and pumping aids.

Practice oriented papers and articles ON ADMIXTURE FOR CONCRETE

Innovative Admixtures to Address Operational and Sustainability Issues with Returned Concrete

Publication: Special Publication
Date: 7/1/2022

Novel Perspective to Explain the Retarding Effect of Organic Admixtures in Silicate-Activated Slag

Publication: Special Publication
Date: 7/1/2022

Effect of Calcium Ions on Bio-Based Polymers for Rheology Control

Publication: Special Publication
Date: 7/1/2022

Effect of Different Retarders and their Combination with Superplasticizer on the Properties of CSA

Publication: Special Publication
Date: 7/1/2022

Impact of a Novel Slow Absorption Superabsorbent Polymer on Compressive Strength and Autogenous Shrinkage of Concrete

Publication: Special Publication
Date: 7/1/2022

The Effect of Alkanolamine Admixtures in the Hydration of Limestone Calcined Clay Cements (LC3)

Publication: Special Publication
Date: 7/1/2022

The Effect of the Charge Density of a Comb Polyphosphate Superplasticizer on the Structural Build-Up of Cement Paste

Publication: Special Publication
Date: 7/1/2022

Thermal Stability of HPEG-Type Polycarboxylate Superplasticizers

Publication: Special Publication
Date: 7/1/2022

The MAXXI Building in Rome with the Long, Inclined and Curvilinear Reinforced Concrete Walls after 18 Years from their Construction

Publication: Special Publication
Date: 7/1/2022

Synthesis and Analysis of an Anti-Segregation Admixture Based on Acrylamide Copolymer

Publication: Special Publication
Date: 7/1/2022

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