Ultrasonic, molecular and mechanical testing diagnostics in natural fibre reinforced, polymer-stabilised earth blocks

Carmen Galan-Marin, Carlos Rivera-Gomez, Fiona Bradley

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The aim of this research study was to evaluate the influence of utilising natural polymers as a form of soil stabilization, in order to assess their potential for use in building applications. Mixtures were stabilized with a natural polymer (alginate) and reinforced with wool fibres in order to improve the overall compressive and flexural strength of a series of composite materials. Ultrasonic pulse velocity (UPV) and mechanical strength testing techniques were then used to measure the porous properties of the manufactured natural polymer-soil composites, which were formed into earth blocks. Mechanical tests were carried out for three different clays which showed that the polymer increased the mechanical resistance of the samples to varying degrees, depending on the plasticity index of each soil. Variation in soil grain size distributions and Atterberg limits were assessed and chemical compositions were studied and compared. X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), and energy dispersive X-ray fluorescence (EDXRF) techniques were all used in conjunction with qualitative identification of the aggregates. Ultrasonic wave propagation was found to be a useful technique for assisting in the determination of soil shrinkage characteristics and fibre-soil adherence capacity and UPV results correlated well with the measured mechanical properties.
LanguageEnglish
Article number130582
Pages1-10
Number of pages10
JournalInternational Journal of Polymer Science
Volume2013
DOIs
Publication statusPublished - Aug 2013

Fingerprint

Natural fibers
Mechanical testing
Polymers
Ultrasonics
Earth (planet)
Natural polymers
Soils
Ultrasonic propagation
Wool fibers
Alginate
Composite materials
Bending strength
Compressive strength
Strength of materials
Plasticity
Clay
Stabilization
Fluorescence
X ray diffraction
X rays

Keywords

  • natural polymers
  • stabilised soil
  • natural construction materials
  • ultrasonic
  • molecular and mechanical testing diagnostics
  • natural fibre

Cite this

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abstract = "The aim of this research study was to evaluate the influence of utilising natural polymers as a form of soil stabilization, in order to assess their potential for use in building applications. Mixtures were stabilized with a natural polymer (alginate) and reinforced with wool fibres in order to improve the overall compressive and flexural strength of a series of composite materials. Ultrasonic pulse velocity (UPV) and mechanical strength testing techniques were then used to measure the porous properties of the manufactured natural polymer-soil composites, which were formed into earth blocks. Mechanical tests were carried out for three different clays which showed that the polymer increased the mechanical resistance of the samples to varying degrees, depending on the plasticity index of each soil. Variation in soil grain size distributions and Atterberg limits were assessed and chemical compositions were studied and compared. X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), and energy dispersive X-ray fluorescence (EDXRF) techniques were all used in conjunction with qualitative identification of the aggregates. Ultrasonic wave propagation was found to be a useful technique for assisting in the determination of soil shrinkage characteristics and fibre-soil adherence capacity and UPV results correlated well with the measured mechanical properties.",
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Ultrasonic, molecular and mechanical testing diagnostics in natural fibre reinforced, polymer-stabilised earth blocks. / Galan-Marin, Carmen; Rivera-Gomez, Carlos; Bradley, Fiona.

In: International Journal of Polymer Science, Vol. 2013, 130582, 08.2013, p. 1-10.

Research output: Contribution to journalArticle

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