Fisuras de contracción en pavimentos de hormigón y el aserrado de juntas

  • M. F. Barreda LEMaC – Universidad Tecnológica Nacional Facultad Regional La Plata-60 y 124 -1900 La Plata
  • M. J. Naber LEMaC – Universidad Tecnológica Nacional Facultad Regional La Plata-60 y 124 -1900 La Plata
  • I. Quispe Sallo LEMaC – Universidad Tecnológica Nacional Facultad Regional La Plata-60 y 124 -1900 La Plata
  • J. D. Sota LEMaC – Universidad Tecnológica Nacional Facultad Regional La Plata-60 y 124 -1900 La Plata
DOI: https://doi.org/10.21041/ra.v3i2.47
Keywords: contraction, concrete, pavements, joints, cracks

Abstract

In the hardened concrete of pavements, with limited deformation, volumetric changes due to variations in temperature and humidity cause tensile stresses, with subsequent cracks random. The presence of shrinkage cracks in concrete pavements, reduces its service life and generates substantial maintenance costs. It is necessary to define a priori the location of cracks, by sawing the pavement. Sawn areas create planes of weakness where cracks form, being critical the right time to saw the contraction joints in pavements. The optimal time to perform the sawing is called sawing window. In this paper the first results about concrete pavements are recorded, establishing sawing times, comparing cylindrical compressive strength, maturity of concrete and ultrasonic pulse values. The studies are part of a R & D project.

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References

ACI 325.11R-01 (2001),“Accelerated Techniques for Concrete Paving”.

ACPA, TB016.01P (2002), “Early Cracking of Concrete Pavements – Causes and Repairs”, Skokie, Illinois.

ASTM C 1074 (1998), “Standard Practice for Estimating Concrete Strength by the Maturity Method”.

Dirección Nacional de Vialidad (1998), “Pliego de Especificaciones Técnicas Generales”.

Fava A., Zuker J. (1971), “Técnicas y Equipos Actuales para el Aserrado de Juntas en los Pavimentos de Hormigón”, VI Simposio del Equipo Vial, Dirección de Vialidad de la Provincia de Buenos Aires, Publicación Nº 95: pp. 117 –140.

IRAM 1683 (1990), “Hormigón de Cemento Portland, Método para Determinar la Velocidad de Pulsos Ultrasónicos”.

Taylor P., et al (2007), “Integrated Materials and Construction Practices for Concrete Pavement: a State-of-the-Practice Manual”, FHWA Publication No. HIF - 07 – 004.

Published
2013-05-30
How to Cite
Barreda, M. F., Naber, M. J., Quispe Sallo, I., & Sota, J. D. (2013). Fisuras de contracción en pavimentos de hormigón y el aserrado de juntas. Revista ALCONPAT, 3(2), 111 - 121. https://doi.org/10.21041/ra.v3i2.47
Issue
Vol. 3 No. 2 (2013)
Section
Applied Research

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