Title:
Effects of Chemical Admixtures onColloidal Underwater Concrete
Author(s):
M. Kawakami, S. Wada, and K. Suzukawa
Publication:
Symposium Paper
Volume:
119
Issue:
Appears on pages(s):
493-516
Keywords:
admixtures; air-entraining agents; concretes; pH; plasticizers; setting (hardening); strength; turbidity; underwater construction; water-reducing agents; workability; Materials Research
DOI:
10.14359/2550
Date:
9/1/1989
Abstract:
Describes the effect of superplasticizer (SP) and air-entraining water-reducing admixture (AE-WRA) on spread, turbidity, pH, flowability, setting time, and compressive strength of colloidal underwater concrete. In summary, the studies resulted in the following conclusions: Spread was affected considerably by the SP and was not controlled by the AE-WRA; turbidity was affected by both SP and AE-WRA when the apparent viscosity of the concrete was low; pH was affected somewhat by the SP and AE-WRA; flowability was affected considerably by the SP; setting time was affected by both SP and AE-WRA when water-cement ratio was lower; the strength of underwater concrete was not affected by SP or AE-WRA amounts.