Evaluation of Superplasticizers in Concrete


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Title: Evaluation of Superplasticizers in Concrete

Author(s): P. K. Kherjee

Publication: Special Publication

Volume: 119


Appears on pages(s): 625-644

Keywords: admixtures; compressive strength; concretes; drying shrinkage; evaluation; freeze-thaw durability; low-heat cements; plasticizers; nuclear reactor containment; segregation; workability; Materials Research

Date: 9/1/1989

The construction procedure of a nuclear containment concrete structure recently built required a highly workable concrete to facilitate placing around heavily congested steel embedments and reinforcements. Use of a superplasticizing admixture was considered essential. A test program was undertaken with several commercially available admixtures to study the properties of the fresh and hardened concrete made with low-heat cement (CSA: A5 Type 40). Under controlled conditions, four of these products met the construction requirements without adversely affecting the properties of the concrete.