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.

JOURNAL Articles ON ADMIXTURE

Tailoring a New Restrained Shrinkage Test for Fiber Reinforced Concrete

Publication: Special Publication
Date: 6/1/2017

Repeatability of Self-Healing in Fiber Reinforced Concretes with and without Crystalline Admixtures: Preliminary Results

Publication: Special Publication
Date: 6/1/2017

Efficiency Comparison of Conventional and Unconventional Curing Methods in Concrete

Publication: Materials Journal
Date: 3/1/2017

A Safe Corrosion Solution for Potable Water Reservoirs

Publication: Concrete International
Date: 2/1/2017

Fly Ash Concrete with Low Portland Cement Content

Publication: Concrete International
Date: 1/1/2017

Products & Practice Spotlight: Solving the Slab Moisture Issue

Publication: Concrete International
Date: 1/1/2017

Effects of Air Void Clustering on Concrete Compressive Strength

Publication: Materials Journal
Date: 11/1/2016

Analysis of Drying Processes in Mortars with and without Shrinkage Reducing Admixtures

Publication: Special Publication
Date: 10/1/2016

Hydration of Cement Systems in the Presence of Novel LDH Nanocomposites

Publication: Special Publication
Date: 10/1/2016

Increasing the Strength of Concretes Made with Blended Cements

Publication: Concrete International
Date: 8/1/2016

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