Strength analysis of concrete pavement deformation due to Alkali Silica Reaction (ASR)

  • Ariyo Adanikin Department of Civil Engineering, Elizade University, Ilara Mokin, Ondo State, Nigeria
  • Funsho Falade Department of Civil and Environmental Engineering, University of Lagos, Akoka, Nigeria
  • Adewale Olutaiwo Department of Civil and Environmental Engineering, University of Lagos, Akoka, Nigeria
Keywords: Concrete Pavement, Alkali Silica Reaction (ASR), Cow Bone Ash (CBA), Strength Modelling, Traffic Loading

Abstract

Alkali Silica Reaction (ASR) is a chemical reaction that negatively affects concrete pavements strengths and integrity. ASR impedes concrete pavements' performance due to the formation of cracks and ultimate deformation if not properly controlled. Concrete pavements are gaining more relevance due to their ability to be constructed on soils with low bearing capacity and support high traffic loadings, thus increasing the need for studies on how ASR in the concrete pavements can be mitigated. This study employed compressive and flexural strength tests to determine the strength properties and deformation of concrete pavements due to ASR when partially replaced with CBA at varying percentages. Static structural modelling of the concrete as a multiphase material in which aggregates, cracks and gel formations are considered as embedded inclusions in the cement paste is then carried out. The results are then compared with relevant standards and findings of other researchers. The study's findings reveal that all the concrete cube samples passed the recommended compressive strength for rigid pavement, which range from 35 - 40 N/mm2 at 28th day. The concrete cube samples also passed the target strength of 48.25 N/mm2 obtained from the mix design. The effect of ASR resulted in lower compressive and flexural strengths observed at 180th and 240th days with lower CBA addition, while samples containing higher CBA contents had increasing compressive strength. The static structural modelling results reveal that the maximum deformation was obtained for the concrete cubes admixed with 0% CBA with 47.045 mm while the least deformation was obtained at 30% CBA replacement with deformation value of 5.542 mm on application of a 900 KN force. Therefore, the study posits that CBA addition will help reduce Portland Cement Concrete Pavement deformation due to ASR in relation to traffic loadings.

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Strength analysis of concrete pavement deformation due to Alkali Silica Reaction (ASR)
Published
2020-12-28
How to Cite
1.
Adanikin A, Falade F, Olutaiwo A. Strength analysis of concrete pavement deformation due to Alkali Silica Reaction (ASR). Alger. J. Eng. Technol. [Internet]. 2020Dec.28 [cited 2024Apr.17];30:020-7. Available from: http://www.jetjournal.org/index.php/ajet/article/view/55