Title: Evaluation of Superplasticizers in Concrete

Author(s): P. K. Kherjee

Publication: Symposium Paper

Volume: 119

Issue:

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

DOI: 10.14359/2569

Date: 9/1/1989

Abstract:
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.