Mechanical Strengths of Modified PET Mortar Composites in Aggressive MgSO4 Medium: ACI & B.S Predictions

  • Nabil Kazi Tani Higher School of Applied Sciences (ESSA-T), BP 165, 13000 Bel Horizon, Tlemcen, Algeria.
  • Ahmed Soufiane Benosman Higher School of Applied Sciences, ESSA-Tlemcen, Bel Horizon, 13000 Tlemcen, Algeria,
  • Hamed Taïbi Faculty of Exact and Applied Sciences, Laboratory of Polymer Chemistry LCP, University of Oran 1, Ahmed Benbella, BP 1524, El Mnaouer, Oran 31000, Algeria,
  • Mohamed Mouli Department of Civil Engineering, Laboratory of LABMAT, ENPO Maurice Audin, Oran, Algeria,
DOI: https://doi.org/10.34118/jbms.v4i2.34
Keywords: Recycled polymer aggregates, Composite mortars, MgSO4 Solutions, Mechanical properties, Sustainable materials

Abstract

Composites mortars based on plastic aggregates are often considered as an innovative materials of the future because of their potential and the advantages they present. In this paper, a comparative study was carried out on the effect of magnesium sulfate MgSO4 (5%) attack on the durability of composite mortars modified by recycled polyethylene terephthalate (PET). Laboratory tests were accomplished on limestone sand and cement mortars where the blended Portland cement was partially replaced by various volume fractions of PET plastic aggregates. Mechanical properties measured on specimens were used to assess the changes in the compressive strengths of PET-mortar composites exposed to MgSO4 attack at different ages, mainly the Young modulus of elasticity. Based on experimental compressive tests on selected specimens and there densities, the evolution of static Young modulus of elasticity has been discussed in accordance to predicted models proposed by (ACI-318) and (BS-8110) codes of practice. In addition, a comparative analysis has been carried out for corrosion resistance coefficients K of referenced mortar to those modified with plastic aggregates. It can be noted that, the corrosion resistance coefficients decrease as much as composite specimens are exposed to MgSO4 corrosive medium. For the case of modified composites, the values of K based on predicted Young modulus before and after immersion are better than the ones calculated for the unmodified mortar. Therefore, ACI 318 prediction model is recommended code for design and investigation works related to reparation mortars, screeds, pavements…etc. Also, it can be concluded that adding PET plastic aggregates by volume to blend Portland cement act to improve the corrosive resistance of this cement against MgSO4 aggressive medium.

References

ACI 318. (2005). Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05), ACI Committee 318, American Concrete Institute, Farmington Hills, MI.

AFNOR, (1990). Granulats. Analyse Granulométrique par Tamisage.. NFP 18-560, Association française de normalisation.

Alfahdawi, I.H., Osman, S.A., Hamid, R., Al-Hadithi, A.I. (2016). Utilizing waste plastic polypropylene and polyethylene terephthalate as alternative aggregates to produce lightweight concrete: a review, Journal of Engineering Science and Technology, 11(8), 1165-1173.

Alqahtani, F.K., Iqbal Khan, M., Ghataora, G., & Dirar, S. (2017). Production of recycled plastic aggregates and its utilization in concrete, Journal of Materials in Civil Engineering, ASCE, 04016248, 29(4), 1.

ASTM C1012-04. (2004). Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution, C1012-04, Annual Book of ASTM Standards.

Azhdarpour, A.M., Nikoudel, M., & Taheri, M., (2016). The effect of using polyethylene terephthalate particles on physical and strength-related properties of concrete; a laboratory evaluation, Construction and Building Materials, 109, 55–62.

Benosman, A.S. (2013). Performances, Propriétés Thermiques et Durabilité des Composites Mortier-Polytéréphtalate d’éthylène PET, Dossier d’Habilitation Universitaire, Université Abou-Bekr Belkaid, Tlemcen.

Benosman, A.S., Mouli, M., Taibi, H., Belbachir, M., Senhadji, Y., Bahlouli, I., & Houivet, D. (2013). La Durabilité des Matériaux Composites PET-Mortier dans un Environnements Agressifs, In theproceedings of CIMDD’2013, ISBN : 978-9931-9090-1-9, Université Boumerdès, Algérie, 06-09 Mai 2013, 330.

Benosman, A.S., Mouli, M., Taibi, H., Belbachir, M., Senhadji, Y., Bahlouli, I., & Houivet, D. (2017a). The Chemical, Mechanical and Thermal Properties of PET-Mortar Composites Containing Waste PET, Environmental Engineering and Management Journal, 16 (7), 1489-1505.

Benosman, A.S., Taïbi, H., Senhadji, Y., Mouli, M., Belbachir, M, Bahlouli, M.I. (2017b). Plastic waste particles in mortar composites: sulfate resistance and thermal coefficients, Progress in Rubber Plastics and Recycling Technology Journal, 33(3), 171-202.

BS 8110. (1997). Structural use of concrete. Code of practice for design and construction. British Standards Institution.

EN 196-1. (2005). Methods of testing cement - Part 1: determination of strength, European Committee for Standardization, CEN.

Gu, L., Ozbakkaloglu, T. (2016). Use of recycled plastics in concrete: A critical review, Waste Management, 51, 19-42.

Hannawi, K., Prince, W. & Kamali-Bernard, S. (2010). Effect of thermoplastic aggregates incorporation on physical, mechanical and transfer behaviour of cementitious materials, Waste Biomass Valorization, 1, 251-259.

http://www.planetoscope.com/petrole/989-production-mondiale-de-plastique.html

Jiang, L., Liu, Z., & Ye, Y. (2004). Durability of concrete incorporating large volumes of low-quality fly ash, Cement and Concrete Research, 34, 1467–1469.

Mehta, PK. (1975). Evaluation of sulfate resisting cements by a new test method, Journal of American Concrete Institute, 72(40), p 573–575.

Miletić, S., Ilić, M., Otović, S., Folić, R., Ivanov, Y. (1999). Phase composition changes due to ammonium-sulphate: Attack on portland and portland fly ash cements, Construction and Building Materials, 13(3), 117-127.

Rahmani, E., Dehestani, M., Beygi, M.H.A., Allahyari, H., & Nikbin, I.M. (2013). On the mechanical properties of concrete containing waste PET particles, Construction and Building Materials, 47, 1302 -1308.

Sharma, R. & Bansal P.P. (2016). Use of different forms of waste plastic in concrete – a review, Journal of Cleaner Production, 112, 473-482.

Siad, H., Kamali-Bernard, S., Mesbah, H.A., Escadeillas, G., Mouli, M., & Khelafi, H. (2013). Characterization of the degradation of self-compacting concretes in sodium sulfate environment: Influence of different mineral admixtures, Construction and Building Materials, 47, 1188–1200.

Zuccheratte, A.C.V., Freire, C.B., & Lameiras, F.S. (2017). Synthetic gravel for concrete obtained from sandy iron ore tailing and recycled polyethyltherephtalate, Construction and Building Materials, 151, 859-865.

Published
2018-02-19
How to Cite
Kazi Tani, N., Benosman, A. S., Taïbi, H., & Mouli, M. (2018). Mechanical Strengths of Modified PET Mortar Composites in Aggressive MgSO4 Medium: ACI & B.S Predictions. Journal of Building Materials and Structures, 4(2), 76-83. https://doi.org/10.34118/jbms.v4i2.34
Issue
Vol 4 No 2 (2017)
Section
Original Articles

Authors who publish with this journal agree to the following terms:

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.