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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Predicting Concrete Strength at a High Level of Accuracy
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Abstract:During the last decades, the concrete maturity method has been developed and used as one of the most favoured methods to estimate in-situ concrete strength. A research project was carried out to build and assess the concrete strength-maturity model, considering two elements – the curing
temperature and the addition of admixture. To investigate the effects of admixtures, the standard curing condition in AS 1012.8 was applied. To investigate the effects of temperatures, a cyclic environment room (i.e. 5°C~15°C) was used to simulate the curing condition in winter. A concrete block was cast and cured in this cyclic environment for the first 3 days. The temperature profile obtained from this concrete block was used as the input into a temperature matched curing system in order to secure concrete specimens for the maturity and strength data (i.e. at 1, 2, 3, and 7 days). At the end of the low temperature curing condition, concrete cylinders were further cured at a standard curing condition. This paper presents the concrete strength–maturity models considering the effects of admixture and the curing condition. It is recommended to use the temperature matched curing method during concrete trial mixes so that an appropriate concrete strength-maturity model can be built prior to its use for the anticipated weather conditions.
Concrete Institute of Australia, International Partner Access.
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