Accelerated strength and testing of concrete in Jordan

Autor: O. N. Madanat, Musa Resheidat
Rok vydání: 1992
Předmět:
Zdroj: Materials and Structures. 25:79-83
ISSN: 1871-6873
0025-5432
DOI: 10.1007/bf02472460
Popis: Accelerated strength testing using the boiling water procedure of ASTM C 684 was performed to evaluate this test method for use in the routine quality control of concrete made of local materials, and in the prediction of potential quality and strength of concrete at later ages. 190 groups of standard concrete specimens were sampled: in each group two cylinders represented the accelerated strength and were tested at 28.5 h, while the other two were normally cured and tested at 28 days. Test results were recorded and statistically evaluated. A computer program was developed to carry out the numerical statistical computations and regression analysis. Correlations between the 28-day compressive strength and the corresponding accelerated strength were established, taking account of the utilization of local materials and practices. The outcome of this study confirms that accelerated strength testing can do everything the 28-day test can do but 27 days sooner. The conclusions derived provide experimental evidence in favour of implementing the standard boiling water method for use in relation to quality control and prediction of concrete strength at later ages.
Databáze: OpenAIRE
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