Influence of the spruce strands hygroscopic behaviour on the performances of wood-cement composites

V. Caprai; F. Gauvin; K. Schollbach; H. J.H. Brouwers

doi:10.1016/j.conbuildmat.2018.01.162

Influence of the spruce strands hygroscopic behaviour on the performances of wood-cement composites

V. Caprai, F. Gauvin, K. Schollbach, H. J.H. Brouwers

Building Materials

Research output: Contribution to journal › Article › Academic › peer-review

24 Citations (Scopus)

110 Downloads (Pure)

Abstract

In wood wool cement composites, the influence of natural fibres is the main factor leading to the instability of the final product. During the manufacture, small variations in wood properties result in inhomogeneous density and strength of the boards. Among the accountable factors, the hygroscopic behaviour of the wood can deeply affect the cement hydration. However, the competitive water absorption mechanism between wood strands and cement is not fully understood. This paper will address the absorption behaviour of wood wool strands in combination with cement. A model for calculating the water to binder ratio of the paste in presence of wood is proposed and validated by NMR and isothermal calorimetry. Finally, the mechanical performances of the composites are tested for different water amounts, verifying the proposed model and defining the conditions for the optimal bending strength.

Original language	English
Pages (from-to)	522-530
Number of pages	9
Journal	Construction and Building Materials
Volume	166
DOIs	https://doi.org/10.1016/j.conbuildmat.2018.01.162
Publication status	Published - 30 Mar 2018

Funding

The authors would like to acknowledge the financial support provided by STW (Stichting voor de Technische Wetenschappen), the Netherlands, under the project number 10013077, with the title: “Development of sustainable and functionalized inorganic binder-biofiber composites”. Moreover, for equipment support, the authors would like to acknowledge ESEM and BET in the group of Chemical Engineering and Chemistry, Chemical Reactor Engineering, Eindhoven University of Technology. Furthermore, the authors wish to express their gratitude to Guillaume Doudart de la Gree for the valuable discussions, concerning the wood-binder dynamics. Finally, the following sponsors of the Building Materials research group at TU Eindhoven: Rijkswaterstaat Grote Projecten en Onderhoud; Graniet-Import Benelux; Kijlstra Betonmortel; Struyk Verwo; Attero; Enci; Rijkswaterstaat Zee en Delta-District Noord; Van Gansewinkel Minerals; BTE; V.d. Bosch Beton; Selor; GMB; Geochem Research; Icopal; BN International; Eltomation; Knauf Gips; Hess AAC Systems; Kronos; Joma; CRH Europe Sustainable Concrete Centre; Cement & Beton Centrum; Heros and Inashco; Keim; Sirius International; Boskalis; ENERGY; Millvision and Sappi (in chronological order of joining).

Keywords

Analytical modelling
Fibre/matrix bond
Hygroscopic behaviour
Mechanical testing
Wood wool strands

Access to Document

10.1016/j.conbuildmat.2018.01.162

Publishers versionFinal published version, 2.35 MBLicence: TAVERNE

Cite this

@article{700dee4a2033424d8dbd20bb04040235,

title = "Influence of the spruce strands hygroscopic behaviour on the performances of wood-cement composites",

abstract = "In wood wool cement composites, the influence of natural fibres is the main factor leading to the instability of the final product. During the manufacture, small variations in wood properties result in inhomogeneous density and strength of the boards. Among the accountable factors, the hygroscopic behaviour of the wood can deeply affect the cement hydration. However, the competitive water absorption mechanism between wood strands and cement is not fully understood. This paper will address the absorption behaviour of wood wool strands in combination with cement. A model for calculating the water to binder ratio of the paste in presence of wood is proposed and validated by NMR and isothermal calorimetry. Finally, the mechanical performances of the composites are tested for different water amounts, verifying the proposed model and defining the conditions for the optimal bending strength.",

keywords = "Analytical modelling, Fibre/matrix bond, Hygroscopic behaviour, Mechanical testing, Wood wool strands",

author = "V. Caprai and F. Gauvin and K. Schollbach and Brouwers, \{H. J.H.\}",

year = "2018",

month = mar,

day = "30",

doi = "10.1016/j.conbuildmat.2018.01.162",

language = "English",

volume = "166",

pages = "522--530",

journal = "Construction and Building Materials",

issn = "0950-0618",

publisher = "Elsevier",

}

TY - JOUR

T1 - Influence of the spruce strands hygroscopic behaviour on the performances of wood-cement composites

AU - Caprai, V.

AU - Gauvin, F.

AU - Schollbach, K.

AU - Brouwers, H. J.H.

PY - 2018/3/30

Y1 - 2018/3/30

N2 - In wood wool cement composites, the influence of natural fibres is the main factor leading to the instability of the final product. During the manufacture, small variations in wood properties result in inhomogeneous density and strength of the boards. Among the accountable factors, the hygroscopic behaviour of the wood can deeply affect the cement hydration. However, the competitive water absorption mechanism between wood strands and cement is not fully understood. This paper will address the absorption behaviour of wood wool strands in combination with cement. A model for calculating the water to binder ratio of the paste in presence of wood is proposed and validated by NMR and isothermal calorimetry. Finally, the mechanical performances of the composites are tested for different water amounts, verifying the proposed model and defining the conditions for the optimal bending strength.

AB - In wood wool cement composites, the influence of natural fibres is the main factor leading to the instability of the final product. During the manufacture, small variations in wood properties result in inhomogeneous density and strength of the boards. Among the accountable factors, the hygroscopic behaviour of the wood can deeply affect the cement hydration. However, the competitive water absorption mechanism between wood strands and cement is not fully understood. This paper will address the absorption behaviour of wood wool strands in combination with cement. A model for calculating the water to binder ratio of the paste in presence of wood is proposed and validated by NMR and isothermal calorimetry. Finally, the mechanical performances of the composites are tested for different water amounts, verifying the proposed model and defining the conditions for the optimal bending strength.

KW - Analytical modelling

KW - Fibre/matrix bond

KW - Hygroscopic behaviour

KW - Mechanical testing

KW - Wood wool strands

UR - http://www.scopus.com/inward/record.url?scp=85043289709&partnerID=8YFLogxK

U2 - 10.1016/j.conbuildmat.2018.01.162

DO - 10.1016/j.conbuildmat.2018.01.162

M3 - Article

AN - SCOPUS:85043289709

SN - 0950-0618

VL - 166

SP - 522

EP - 530

JO - Construction and Building Materials

JF - Construction and Building Materials

ER -

Influence of the spruce strands hygroscopic behaviour on the performances of wood-cement composites

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this