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Studying the effect of various parameters on mechanical properties of lightweight aggregate concrete using MANOVA

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Abstract

In order to reduce the dead load of the structures prone to seismic hazards and improve the insulating characteristics of construction materials with the purpose of economical construction, lightweight aggregate (LWA) concrete (LWAC) could be pondered. In this paper, the effect of different parameters such as volume fraction, LWA grading and sand to cement ratio on compressive strength, and elastic modulus of lightweight concrete have been studied. In this study, 36 different mix designs were developed; 3 different sand to cement ratios, 4 volume fractions and 3 different gradings of LWA were considered in order to study the effect of these parameters and find out an efficient mix design for structural use. In order to investigate the effect of each parameter on the compressive strength and elastic modulus, a multivariate analysis of variation was performed. Results indicate that the volume fraction and the LWA grading are the two key parameters influencing compressive strength comparing with sand to cement ratios. Moreover, it was concluded that the sand to cement (S/C) ratio could be as effective as other parameters on elastic modulus of LWAC.

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Authors and Affiliations

  1. School of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran

    A. Rahai & A. Dolati

  2. Department of Civil and Environmental Engineering, Pennsylvania State University, State College, PA, USA

    M. E. Kamel

  3. Structural Engineer, Stantec Inc., Baton Rouge, LA, USA

    H. Babaizadeh

Authors
  1. A. Rahai
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  2. A. Dolati
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  3. M. E. Kamel
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  4. H. Babaizadeh
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Correspondence to M. E. Kamel.

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Rahai, A., Dolati, A., Kamel, M.E. et al. Studying the effect of various parameters on mechanical properties of lightweight aggregate concrete using MANOVA. Mater Struct 48, 2353–2365 (2015). https://doi.org/10.1617/s11527-014-0317-4

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  • DOI: https://doi.org/10.1617/s11527-014-0317-4

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