Geotechnical Behavior of Construction Waste (CW) as a Partial Replacement of a Lateritic Soil in Fiber-Reinforced Cement
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ORIGINAL PAPER
Geotechnical Behavior of Construction Waste (CW) as a Partial Replacement of a Lateritic Soil in FiberReinforced Cement Mixtures Juliana Azoia Lukiantchuki . Jose´ Renato Moreira da Silva de Oliveira . Ma´rcio de Souza Soares de Almeida . Jeselay Hemete´rio Cordeiro dos Reis . Tiago Betinardi Silva . Leandro Canezin Guideli
Received: 13 October 2019 / Accepted: 26 August 2020 Ó Springer Nature Switzerland AG 2020
Abstract It is increasingly important to find solutions for the problem of construction waste (CW) which is generated in high quantities and is often disposed of irregularly. The reuse of this material in large scale projects, such as base and sub-base layers for road pavements, can lead to long term environmental benefits. This paper describes the novel use of CW to partially replace a lateritic natural soil in fiberreinforced cement mixtures. In addition to the CW, Portland cement and polypropylene fibers were added J. A. Lukiantchuki (&) J. H. C. dos Reis Department of Civil Engineering, University of State of Maringa, Bloco C67, Colombo Avenue 5790, Jardim Universita´rio, Maringa´, Parana´ 87020-900, Brazil e-mail: [email protected] J. H. C. dos Reis e-mail: [email protected] J. R. M. d. S. de Oliveira M. S. S. de Almeida Department of Civil Engineering, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil e-mail: [email protected] M. S. S. de Almeida e-mail: [email protected] T. B. Silva Maringa, Brazil e-mail: [email protected] L. C. Guideli Department of Civil Engineering, Federal University of Parana, Curitiba, Brazil e-mail: [email protected]
to the natural soil as a percentage of its dry mass. The geotechnical characterization, unconfined compressive strength, tensile strength, direct shear strength, permanent strain and resilient modulus were used to the evaluate the effect of polypropylene fiber and Portland cement on the behavior of the soil–CW mixtures. Laboratory test results indicate that the partial replacement of soil with CW and the addition of 0.1% of 50 mm long polypropylene fiber to soil– CW mixtures produces a viable alternative material for geotechnical applications, with better performance than natural soil alone. Keywords Construction waste Natural soil Polypropylene fiber Cement Geotechnical applications List of Symbols ar Aspect ratio qs Particle density cdmax Maximum dry unit weight wop Optimum water content MR Resilient modulus rd Deviatoric stress er Resilient axial deformation Dh Resilient axial deformation H Initial height of the specimen r3 Confining stress r1 Axial stress IS Shear strength improvement factor
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Geotech Geol Eng
sfu sR d dfu k1 k2
Shear strength of the unreinforced soil Shear strength of the fiber-reinforced soil Shear displacement Shear displacement of the unreinforced soil Model parameter Model parameter
1 Introduction Oftentimes natural soil does not exhibit suitable behavior for geotechnical purposes, primarily because of its low tensile and sh
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