Rice husk-earth based composites: A novel bio-based panel for buildings refurbishment

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

With the aim of developing economic and ecological bio-based composite panels to be used on indoor wall or ceiling coating systems, contributing to hygrothermal comfort and health, three different composite formulations were produced, differing on the content and pre-treatment of rice husk: 15% and 30%, only dried or previously boiled. Composite samples were tested for biological development and several physic-mechanical characteristics. Increasing on rice husk content decreases thermal conductivity due to bulk density decrease, decreasing ultrasound velocity, flexural strength, abrasion and fire resistance, but improving the moisture buffering capacity at least in 20%. For high rice husk-content composites, its pre-boiling decreases biological susceptibility although decreasing resistance to fire, most probably due to destruction of the cellulose wall, but significantly increases abrasion resistance and compressive strength, probably because of a better bond between the rice husk and the earthen matrix, quicker reaching a high water vapour adsorption limit.

Original languageEnglish
Pages (from-to)99-108
Number of pages10
JournalConstruction and Building Materials
Volume221
DOIs
Publication statusPublished - 10 Oct 2019

Fingerprint

Earth (planet)
Composite materials
Wear resistance
Fire resistance
Ceilings
Steam
Cellulose
Bending strength
Boiling liquids
Water vapor
Compressive strength
Thermal conductivity
Fires
Moisture
Physics
Ultrasonics
Health
Adsorption
Coatings
Economics

Keywords

  • Air lime
  • Earth
  • Gypsum
  • Hygrothermal
  • Insulation
  • Massive wall
  • Mechanical performance
  • Moisture buffer value
  • Plant fiber
  • Thermal conductivity

Cite this

@article{a3610d62f2ac4b388115502d6865ea82,
title = "Rice husk-earth based composites: A novel bio-based panel for buildings refurbishment",
abstract = "With the aim of developing economic and ecological bio-based composite panels to be used on indoor wall or ceiling coating systems, contributing to hygrothermal comfort and health, three different composite formulations were produced, differing on the content and pre-treatment of rice husk: 15{\%} and 30{\%}, only dried or previously boiled. Composite samples were tested for biological development and several physic-mechanical characteristics. Increasing on rice husk content decreases thermal conductivity due to bulk density decrease, decreasing ultrasound velocity, flexural strength, abrasion and fire resistance, but improving the moisture buffering capacity at least in 20{\%}. For high rice husk-content composites, its pre-boiling decreases biological susceptibility although decreasing resistance to fire, most probably due to destruction of the cellulose wall, but significantly increases abrasion resistance and compressive strength, probably because of a better bond between the rice husk and the earthen matrix, quicker reaching a high water vapour adsorption limit.",
keywords = "Air lime, Earth, Gypsum, Hygrothermal, Insulation, Massive wall, Mechanical performance, Moisture buffer value, Plant fiber, Thermal conductivity",
author = "Ana Antunes and Paulina Faria and V{\'i}tor Silva and Ana Br{\'a}s",
note = "The authors wish to acknowledge Aur{\'e}lie Laborel-Pr{\'e}neron for the earth and to Portuguese Funda{\cc}{\~a}o para a Ci{\^e}ncia e Tecnologia (FCT) for the financial support under Project DB-Heritage - Database of building materials with historical and heritage interest ( PTDC/EPH-PAT/4684/2014 ).",
year = "2019",
month = "10",
day = "10",
doi = "10.1016/j.conbuildmat.2019.06.074",
language = "English",
volume = "221",
pages = "99--108",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier",

}

TY - JOUR

T1 - Rice husk-earth based composites: A novel bio-based panel for buildings refurbishment

AU - Antunes, Ana

AU - Faria, Paulina

AU - Silva, Vítor

AU - Brás, Ana

N1 - The authors wish to acknowledge Aurélie Laborel-Préneron for the earth and to Portuguese Fundação para a Ciência e Tecnologia (FCT) for the financial support under Project DB-Heritage - Database of building materials with historical and heritage interest ( PTDC/EPH-PAT/4684/2014 ).

PY - 2019/10/10

Y1 - 2019/10/10

N2 - With the aim of developing economic and ecological bio-based composite panels to be used on indoor wall or ceiling coating systems, contributing to hygrothermal comfort and health, three different composite formulations were produced, differing on the content and pre-treatment of rice husk: 15% and 30%, only dried or previously boiled. Composite samples were tested for biological development and several physic-mechanical characteristics. Increasing on rice husk content decreases thermal conductivity due to bulk density decrease, decreasing ultrasound velocity, flexural strength, abrasion and fire resistance, but improving the moisture buffering capacity at least in 20%. For high rice husk-content composites, its pre-boiling decreases biological susceptibility although decreasing resistance to fire, most probably due to destruction of the cellulose wall, but significantly increases abrasion resistance and compressive strength, probably because of a better bond between the rice husk and the earthen matrix, quicker reaching a high water vapour adsorption limit.

AB - With the aim of developing economic and ecological bio-based composite panels to be used on indoor wall or ceiling coating systems, contributing to hygrothermal comfort and health, three different composite formulations were produced, differing on the content and pre-treatment of rice husk: 15% and 30%, only dried or previously boiled. Composite samples were tested for biological development and several physic-mechanical characteristics. Increasing on rice husk content decreases thermal conductivity due to bulk density decrease, decreasing ultrasound velocity, flexural strength, abrasion and fire resistance, but improving the moisture buffering capacity at least in 20%. For high rice husk-content composites, its pre-boiling decreases biological susceptibility although decreasing resistance to fire, most probably due to destruction of the cellulose wall, but significantly increases abrasion resistance and compressive strength, probably because of a better bond between the rice husk and the earthen matrix, quicker reaching a high water vapour adsorption limit.

KW - Air lime

KW - Earth

KW - Gypsum

KW - Hygrothermal

KW - Insulation

KW - Massive wall

KW - Mechanical performance

KW - Moisture buffer value

KW - Plant fiber

KW - Thermal conductivity

UR - http://www.scopus.com/inward/record.url?scp=85067195882&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2019.06.074

DO - 10.1016/j.conbuildmat.2019.06.074

M3 - Article

VL - 221

SP - 99

EP - 108

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

ER -