Title: Experiences in the Use of Superplasticizers in England

Author(s): P.C. Hewlett

Publication: Symposium Paper

Volume: 62

Issue:

Appears on pages(s): 101-122

Keywords: admixtures; age; bleeding (concrete); cements; concrete construction; concrete durability; concretes; flow table tests; mix proportioning; plasticizers; slump tests; workability

DOI: 10.14359/17721

Date: 1/1/1979

Abstract:
Superplasticizers in the UK are not used extensively as routine admixtures but more in problem situations. The reasons for this are given. However, as a consquence, a number of relevant problem areas have come to light, for instance:-The time dependance of enhanced workability and the effect of aged concrete. Effect of cement type. Durability predictions of concrete containing superplasticiser. Inadequacy of standard workability tests. Mix design and consequential bleed. These aspects are discussed and taken in relation to case histories.