ISSN: 0149-6123
Page Count: 7

Setting Times of Fly Ash and Slag-Cement Concretes as Affected by Curing Temperature
Eren, O
Graduate research assistant and associate professor, Eastern Mediterranean University,

Brooks, JJ
Senior lecturer, The University of Leeds,

Celik, T
Graduate research assistant and associate professor, Eastern Mediterranean University,

Abstract

Using Test Method for Time of Setting of Concrete Mixtures Paste by Penetration Resistance (ASTM C 403), Proctor penetration resistance was determined under isothermal curing temperatures ranging from 6 to 80°C for concretes containing up to 50% of fly ash or ground-granulated blast-furnace slag. The results show that as the temperature increases, the initial and final setting times decrease for all types of concrete, with fly-ash concrete having the longest setting times. At high temperatures, slag concrete has shorter setting times than Type I cement concrete. Relationships are presented for setting time as a function of penetration resistance, temperature, and cement replacement level.

Keywords:
setting time, Proctor penetration, fly ash, slag, curing temperature, regression analysis

Paper ID: CCA10331J
DOI: 10.1520/CCA10331J
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