Influence of plant particles treatments on the interface with a mineral matrix

Title: Influence of plant particles treatments on the interface with a mineral matrix
Author(s): V. Nozahic, S. Amziane
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 146 - 154
Total Pages: 9
Nb references: 14
Language: English

Abstract: Engineering of ultra-lightweight lignocellulosic concretes had been already considered from the point of view of physical, chemical or thermal characteristics. It had been studied macroscopically as a civil engineering material when it could also be observed as a composite material. In fact, interfaces are the weakest part of these composites. In contact with liquid media, particles have the ability to pump huge quantities of water leading to an important swelling, followed by shrinkage during concrete drying. These phenomenons, coupled with vegetable lignocellulosic extracts effect on the matrix setting and alkaline attack create short and long term problems in a so-called transition zone (TZ).
Main goal of this study was to characterise the interface between vegetable particles and mineral binder during the first hours and after several days. Results underline water management as a key axe to solve partially interfacial problems. Particle coating shows interesting ability to improve samples TZ.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00