admixture Topic

Admixture

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

Design Approach and Properties of a New Generation of Sustainable Structural Concretes

Publication: Special Publication
Date: 8/10/2018

Highly Durable Concrete based on Calcined Clays

Publication: Special Publication
Date: 8/10/2018

Rheological Behaviour of Cement Pastes with Low Amounts of Polynaphthalene Sulfonate Plasticizer

Publication: Special Publication
Date: 8/10/2018

Kinetics of UHPC Strength Gain at Subfreezing Temperatures

Publication: Special Publication
Date: 8/10/2018

Environmentally Friendly Concretes Manufactured with CSA Cement

Publication: Special Publication
Date: 8/10/2018

Effect of Hardening Conditions on the Structure of Cement

Publication: Special Publication
Date: 8/10/2018

Influence of Negative Temperatures on Water Permeability of Concrete

Publication: Special Publication
Date: 8/10/2018

Influence of Self-Healing Stimulated via Crystalline Admixtures on Chloride Penetration

Publication: Special Publication
Date: 8/10/2018

Planning and Execution of a Mass Concrete Placement Utilizing Insulation Regimen

Publication: Special Publication
Date: 7/25/2018

The Rheology of Control Flow Concrete

Publication: Concrete International
Date: 1/1/2018

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