Skip to Main content Skip to Navigation
Theses

Formulation et caractérisation d'un composite terre-fibres végétales : la bauge

Abstract : Soil is the first construction material used by man, widely available and low energy consuming. Indeed, about 30% of the current world population lives in earthen structures and, in developing countries, this rate rise to 50%, mostly rural. Moreover, earth-based materials allow an improved balance and control of thermal and acoustic indoor climate compared to industrial construction materials. However, most of earthen structures do not reach current requirements in terms of mechanical, thermal or architectural. To respond to these requirements, a work at scientific and craftsman levels is necessary.The objective of this study is to determine the influence of materials’ properties on the mechanical and hygrothermal behaviour of earth-fiber composites. In order to do this, different types of soil and plant fiber (flax straw, wheat straw) were used. Then, mechanical (compression, bending) and hygrothermal performances (sorption / desorption, water vapor permeability, thermal conductivity) were determined for different soil-fiber composites. Results show that the use of flax straw provides better mechanical performances than use of wheat straw. However, it should be noted that fibers addition to soil decreases mechanical performance due to the decrease of material density. No clear influence of fiber length on mechanical performance was found. The study of hygrothermal behaviour has shown that the sorption / desorption behaviour of earth-fiber material can be approximated from the results obtained from basic materials. In addition, it has been shown that the thermal conductivity evolution of earth-fiber material during drying is related to the shrinkage behaviour.
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-01938827
Contributor : Abes Star :  Contact
Submitted on : Thursday, November 29, 2018 - 1:01:48 AM
Last modification on : Wednesday, November 27, 2019 - 1:36:23 AM

File

28006-phung-tuan_anh-merged.pd...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-01938827, version 1

Citation

Tuan Anh Phung. Formulation et caractérisation d'un composite terre-fibres végétales : la bauge. Génie civil. Normandie Université, 2018. Français. ⟨NNT : 2018NORMC219⟩. ⟨tel-01938827⟩

Share

Metrics

Record views

661

Files downloads

4174