Measure of maturity of the concrete structure
Abstract
Measure of maturity of the concrete structure
ABSTRACT
In this paper we determine the degree of maturity in situ concrete structure. To do this, temperatures are measured in the concrete foundations of a structure, from the first hours of hydration, to 28 days, with a device developed at the Faculty. Simultaneously testing compressive strength are performed establishing the relationship with temperature, with expressions Nurse-Saul and Arrhenius. The results allowed to determine the maturity curve of the studied concrete and establish the degree of maturity in each of the different parts of the structure.n The use of this methodology allows to control the entire concrete received, its homogeneity and to monitor resistance in real time.
Keywords:Â maturity; concrete; temperature; resistance.
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Medida de la madurez del hormigón en una estructura
RESUMEN
En este trabajo realizamos la determinación del grado de madurez del hormigón in situ en una estructura. Para ello, se miden las temperaturas en las bases de hormigón de una estructura, desde las primeras horas de la hidratación, hasta los 28 dÃas, con un equipo desarrollado en la Facultad. Simultáneamente se realizan ensayos de resistencia a la compresión estableciendo la relación con las temperaturas, con las expresiones de Nurse-Saul y Arrhenius. Los resultados permitieron determinar la curva de madurez del hormigón estudiado y establecer el grado de madurez en cada una de las partes diferenciadas de la estructura. El uso de esta metodologÃa permite controlar la totalidad del hormigón recibido, su homogeneidad y monitorear su resistencia en tiempo real.
Palabras claves: madurez; hormigón; temperatura; resistencia.
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Medida de maturidade do concreto in situ numa estrutura
RESUMO
Neste trabalho, determinar o grau de maturidade na estrutura de concreto situ. Para fazer isso, as temperaturas são medidas nas fundações de betão de uma estrutura, desde as primeiras horas de hidratação, a 28 dias, com um dispositivo desenvolvido na Faculdade. Simultaneamente testar resistência à compressão são realizados estabelecer a relação com a temperatura, com expressões Nurse-Saul e Arrhenius. Os resultados obtidos permitem determinar a curva do betão estudada maturidade e estabelecer o grau de maturação em cada uma das diferentes partes da estrutura. A utilização desta metodologia permite controlar todo o betão recebido, a sua homogeneidade e monitorar a resistência em tempo real.
Palavras-chave: maturidade; betão; temperatura; resistência.
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References
ACI 325.11R-01 (2001), American Concrete Institute. Accelerated Techniques for Concrete Paving.
ASTM C 1074 (1998), Standard Practice for Estimating Concrete Strength by the Maturity Method.
Barreda, M. F., Naber, M. J., Quispe Sallo, I., Sota, J. D. (2013), “Fisuras de contracción en pavimentos de hormigón y el aserrado de juntasâ€, XII Congreso Latinoamericano de PatologÃa de la Construcción y XIV Congreso de Control de Calidad en la Construcción. CONPAT 2013. Octubre de 2013. Cartagena de Indias, Colombia.
Sota, J. D., Avid, F. A., Chury, M., Moreira P. (2014), “Medida de la madurez del hormigón de pavimentos urbanos para determinar su resistencia. Diseño de equipamientoâ€, X Congreso Internacional sobre PatologÃa y Recuperación de Estructuras. CINPAR 2014. 4 al 6 de junio de 2014. Santiago, Chile.
Taylor, P. C., Kosmatka, S. H., Voigt, G. F. et al (2007), Integrated Materials and Construction Practices for Concrete Pavement: a State-of-the-Practice Manual, FHWA Publication No. HIF - 07 – 004.
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