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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.

JOURNAL Articles ON ADMIXTURE FOR CONCRETE

Characterization of Extrudability Using Rheology and Desorptivity

Publication: Materials Journal
Date: 4/1/2024

Multi-Approaches to Improve Internally Cured Concrete for Rigid Pavement Application

Publication: Materials Journal
Date: 2/8/2024

Contribution of Shrinkage Reducing Admixture and Lightweight Sand on Moist Curing Requirement for Fiber-Reinforced Ultra-High-Performance Concrete

Publication: Materials Journal
Date: 2/8/2024

Influence of Mixture Proportions and Permeability- Reducing Admixtures on Concrete Fluid Transport

Publication: Materials Journal
Date: 12/1/2023

Effects of Different Fibers and Cement Substituting Minerals on Mechanical Properties of Ultra-High- Performance Fiber-Reinforced Concrete

Publication: Materials Journal
Date: 9/1/2023

Carbon Dioxide Conversion and Use as Admixture for Calcined Clay Blended Pastes

Publication: Materials Journal
Date: 9/1/2023

Self-Healing Efficiency of Concretes through Permeability to Chlorides

Publication: Materials Journal
Date: 9/1/2023

Effect of Iron Tailings as Fine Aggregate and Mineral Admixture on Strength and Microstructure of Cement Mortar

Publication: IJCSM
Date: 7/31/2023

Kappaphycus alvarezii Seaweed as Novel Viscosity- Modifying Admixture for Cement-Based Materials

Publication: Materials Journal
Date: 7/1/2023

Influence of Activated Coal Gangue Powder on Compressive Strength of Coal Gangue Coarse Aggregate Concrete

Publication: Materials Journal
Date: 7/1/2023

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