scholarly journals Development of Coir-fibre Cement Composite Roofing Tiles

2016 ◽  
Vol 24 ◽  
pp. 169-178 ◽  
Author(s):  
P. Darsana ◽  
Ruby Abraham ◽  
Anu Joseph ◽  
Arakkal Jasheela ◽  
P.R. Binuraj ◽  
...  
Keyword(s):  
Cement Composite ◽  
Coir Fibre ◽  
Fibre Cement ◽  
Fibre Cement Composite

scholarly journals CEMENT COMPOSITES REINFORCED WITH TEOS-TREATED WOOD FIBRES

2021 ◽  
Vol 55 (1-2) ◽  
pp. 141-147
Author(s):  
ALESSANDRA BUSS TESSARO ◽  
RAFAEL DE AVILA DELUCIS ◽  
SANDRO CAMPOS AMICO ◽  
DARCI ALBERTO GATTO ◽  
MARGARETE REGINA FREITAS GONÇALVES
Keyword(s):  
Mechanical Properties ◽  
Treated Wood ◽  
Cement Composite ◽  
Tetraethyl Orthosilicate ◽  
Wood Fibre ◽  
Cement Composites ◽  
Hygroscopic Properties ◽  
Wood Fibres ◽  
Fibre Cement ◽  
Fibre Cement Composite

In this study, wood fibres were extracted from eucalyptus and pine woods, treated by immersion in tetraethyl orthosilicate (TEOS) and incorporated into a cementitious matrix at three weight contents (2 wt%, 5 wt% and 10 wt%). The fibres were characterized using chemical and morphological analyses and the cement-based composites were evaluated using chemical, hygroscopic, mechanical and morphological tests. The morphological and spectroscopic results satisfactorily justified the physical-mechanical properties. The wood fibre-cement composites reached similar water uptake and apparent porosity to those of the neat mortar, but exhibited higher mechanical properties. Furthermore, all treated fibres yielded composites with improved mechanical and hygroscopic properties compared to those with pristine fibres. Overall, the best performance (based on hygroscopic and mechanical results) was obtained for the wood fibre-cement composite with 2 wt% pine fibres.

Test of Adhesion and Cohesion of Silicone Sealants on Facade Cladding Materials within Extreme Weather Conditions

2014 ◽  
Vol 1041 ◽  
pp. 23-26 ◽  
Author(s):  
Barbora Nečasová ◽  
Pavel Liška ◽  
Martina Šimáčková ◽  
Jiří Šlanhof
Keyword(s):  
New Technologies ◽  
Extreme Temperature ◽  
Weather Conditions ◽  
Cement Composite ◽  
Suitable Material ◽  
Experimental Part ◽  
Fibre Cement ◽  
Fibre Cement Composite ◽  
Technical Properties ◽  
Cladding Material

This research was carried out as part of project MPO FR - TI4/332 – New Technologies of Bonded Facade Cladding with Anchor Elements with Increased Resistance to Corrosion.This contribution concerns tests carried out to investigate the tensile properties of silicone sealants for use with facade cladding materials. The experimental part of the research is aimed at ascertaining the technical properties of sealants via the cyclic alternation of extension and compression of test specimens in test moulds. For the tests, industrially manufactured neutral and universal silicones were chosen from three different manufacturers. The aim of the research was to discover any differences that might appear in their resistance against alternating maintained extension and compression of the specimens under extreme temperature conditions, i.e. a high temperature of (70+2) °C and a temperature simulating freezing, i.e. (-20+2) °C. The cladding material used was fibre-cement composite boards (known as Cembonit), ceramic and glass cement facade claddings.The result of the measurements taken is a summary in which effective and unsuitable combinations of sealants and test substrates are outlined. The main conclusion is the fact that it is not possible to responsibly choose a suitable material without taking appropriate measurements or having previous experience. A secondary conclusion to this article is the fact that there are significant differences between individual sealants in the results they provide in combination with specific cladding material.

Wood fibre - cement composites by extrusion

2000 ◽  
Vol 27 (3) ◽  
pp. 543-552 ◽  
Author(s):  
Yixin Shao ◽  
Shylesh Moras ◽  
Nilgun Ulkem ◽  
George Kubes
Keyword(s):  
Cement Composite ◽  
Temperature Cycling ◽  
Wood Fibre ◽  
Flexural Behavior ◽  
Cement Composites ◽  
Building Product ◽  
Toughness Index ◽  
Composites Materials ◽  
Fibre Cement ◽  
Hardwood Pulp

Wood fibres derived from both hardwood and softwood, being relatively inexpensive and in ample supply, have gained increasing popularity in the fibre-cement building product industry. Presently, the manufacture of most wood fibre - cement composites employs the Hatschek process. The purpose of this paper is to examine the feasibility of using extrusion technology for the production. Wood fibre - cement sheets, composed of both hardwood and softwood fibres of different fibre contents, were fabricated using an auger-type extruder. The flexural behavior, moisture content, water absorption, and density of all batches were evaluated. To investigate the weathering durability of the extruded composites, materials were also subjected to a temperature-cycling test and a natural exposure weathering test. With a relative ease of manufacture and a much cleaner production, extrusion was found to be a suitable means for making cement composite thin sheets with up to 8% fibres by weight. The extruded composites exhibited a performance comparable to or even better than that of the Hatschek products. Hardwood fibres, which are cheaper and more available than the softwood fibres, were found to be more suitable for extrusion production in terms of the extrudability, finished surface, and long-term mechanical properties.Key words: wood fibre - cement composites, hardwood pulp, softwood pulp, extrusion, strength, toughness index, temperature cycling, natural weathering.

Material Properties of Fibre-Cement and Fibre-Concrete Composites Used for Plated Components of Building Structures

2013 ◽  
Vol 1612 ◽  
Author(s):  
Marcela Karmazínová
Keyword(s):  
Building Materials ◽  
Bending Strength ◽  
Experimental Studies ◽  
Cement Composite ◽  
Building Structures ◽  
The Czech Republic ◽  
Manufacturing Plants ◽  
Fibre Concrete ◽  
Load Carrying ◽  
Fibre Cement

ABSTRACTThe paper presents the brief information on particular results of experimental studies dealing with the problems of properties of materials based on fibre-cement and fibre-concrete composites, which are being recently developed, tested and verified, to use them in the plated components of load-carrying structures of building constructions. The problems mentioned are solved in the co-operation with the company of the Research Institute of Building Materials Inc. (“VUSTAH a.s.”) at Brno city in the Czech Republic. The attention is paid to two basic types of material: (i) fibre-cement composite used for the slab components intended for vertical or horizontal building or technology structures, such as permanent shuttering of bridges, timber floor structures and slab flooring, the wall cladding of buildings and formwork of components in manufacturing plants of the concrete units; (ii) glass-fibre-concrete composite mainly intended for the building façade claddings, but also for the objects of daily use. The experimental verification has been mainly oriented to the investigation of physical-mechanical properties, like as the tensile-bending strength, as well as the corresponding modulus of elasticity.

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