admixture for concrete Topic

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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

Polycarboxylate Ether High-Range Water-Reducing Admixtures

Publication: Concrete International
Date: 10/1/2019

Durability of Class C Fly Ash-Based Alkali Activated Concrete

Publication: Special Publication
Date: 9/30/2019

Nano-Modified Concrete Cast and Cured at Freezing Temperature

Publication: Special Publication
Date: 9/20/2019

Is this the Concrete Mix You Want?

Publication: Special Publication
Date: 7/1/2019

ASCC Position Statement #44

Publication: Concrete International
Date: 6/1/2019

Concrete Q&A: Slump Requirements per ACI 301 and Roughening of Existing Concrete to 1/4 in. Amplitude per ACI 318

Publication: Concrete International
Date: 5/1/2019

Polymeric Microspheres Provide Resistance to Harsh Winter Conditions

Publication: Concrete International
Date: 1/1/2019

Testing Self-Sealing Properties of Concrete

Publication: Concrete International
Date: 1/1/2019

Novel Clay-Mitigating Polymers for Robust Water-Reducing Admixtures

Publication: Concrete International
Date: 1/1/2019

Novel Admixtures to Reduce the Stickiness of Low W/C Concretes

Publication: Special Publication
Date: 9/26/2018

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