scholarly journals Fibre reinforcement in earthen construction materials

Author(s):  
Douglas Readle ◽  
Sarah Coghlan ◽  
Jonathan C. Smith ◽  
Andrew Corbin ◽  
Charles E. Augarde
2021 ◽  
Vol 54 (3) ◽  
Author(s):  
Alessandra Vincenzini ◽  
Charles E. Augarde ◽  
Massimiliano Gioffrè

AbstractEarthen construction materials are the subject of renewed interest due to the rising alarm about environmental pollution from the construction industry. Current research efforts are focused on improving the mechanical properties of earthen materials to make them modern and competitive. To increase strength and improve ductility fibres can be added to the soil mixture and if natural fibres are used one achieves stabilisation in an environmentally friendly way. Several previous studies have dealt with the behaviour of this composite material at a macroscopic level and on the general interaction between fibres and soil, but there is little published research on the interfacial mechanical interaction between natural fibre reinforcement and a soil matrix which is key to the former. This paper attempts to fill this gap by presenting and discussing laboratory results from a large campaign of pull-out tests conducted on composite earthen samples. The variables investigated here are the nature of the fibres (i.e. single or collections twisted together) and the use of fibre treatments such as PVA glue and baking soda. In the study both fibre–soil failure and soil-soil failure are investigated and the results lead to conclusions as to appropriate use of fibres to reinforce earthen construction materials.


2021 ◽  
Vol 14 ◽  
pp. e00496
Author(s):  
Abdellah Mellaikhafi ◽  
Amine Tilioua ◽  
Hanène Souli ◽  
Mohammed Garoum ◽  
Moulay Ahmed Alaoui Hamdi

Materials ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 2513 ◽  
Author(s):  
Abbas Mohajerani ◽  
Siu-Qun Hui ◽  
Mehdi Mirzababaei ◽  
Arul Arulrajah ◽  
Suksun Horpibulsuk ◽  
...  

Fibres have been used in construction materials for a very long time. Through previous research and investigations, the use of natural and synthetic fibres have shown promising results, as their presence has demonstrated significant benefits in terms of the overall physical and mechanical properties of the composite material. When comparing fibre reinforcement to traditional reinforcement, the ratio of fibre required is significantly less, making fibre reinforcement both energy and economically efficient. More recently, waste fibres have been studied for their potential as reinforcement in construction materials. The build-up of waste materials all around the world is a known issue, as landfill space is limited, and the incineration process requires considerable energy and produces unwanted emissions. The utilisation of waste fibres in construction materials can alleviate these issues and promote environmentally friendly and sustainable solutions that work in the industry. This study reviews the types, properties, and applications of different fibres used in a wide range of materials in the construction industry, including concrete, asphalt concrete, soil, earth materials, blocks and bricks, composites, and other applications.


2019 ◽  
Vol 10 (1) ◽  
pp. 9-14
Author(s):  
Marie Sokolová ◽  
Pavla Ryparová

All building materials can be affected by microbiological agents during their lifecycle. The presence of microorganisms changes the appearance of the surface, degrading it, and they can even cause health problems to the residents. The biological susceptibility is dependent on the content of nutrient based on organic compounds. Thus one of the most susceptible of those materials are earthen construction materials. The degree of fungal growth is influenced by the chemical composition and plant fibres additives as well as the external conditions such as temperature and relative humidity. The earth plastering mortar has started to gain more attention recently as it is considered to have a low environmental impact and to increase the indoor air quality. Mechanical and physical characteristics of earth materials were studied by a number of authors but the knowledge about the biological resistance of the material is scarce. This study intends to look into the issue of the biological colonisation of earth plasters depending on the relative humidity. The samples, made of four types of earth plasters with different plant fibres, were placed to an environment of the relative humidity ranging from 33% to 100%. During a period of 4 weeks the extent of fungal growth was observed.


2013 ◽  
Vol 78 (2) ◽  
pp. 344-358 ◽  
Author(s):  
Sarah C. Sherwood ◽  
John H. Blitz ◽  
Lauren E. Downs

AbstractThe Graveline Mound (22JA503) is a sand platform mound in Jackson County, Mississippi, built on a low, late Pleistocene terrace on the Mississippi Sound. The Late Woodland mound (A.D. 590–780) is composed of local soils, and its presence today is a testament to the ancient builders’ knowledge of earthen construction materials and methods. Central to the study of the mound is an integrated geoarchaeological approach that uses stratigraphy and micromorphology to decipher material source and selection, construction techniques, and periodicity, in combination with more traditional artifacts, revealing the activities that created this ultimately monumental space. The mound was built in three rapid stages beginning with a low earthwork demarcating a ritual precinct used during late spring/early summer. Stage II quickly followed with a series of alternating zoned fills, sealing the space that was then subsequently covered by Stage III, a massive hard red surface that marked the location with a platform mound.


2020 ◽  
Vol 259 ◽  
pp. 119725 ◽  
Author(s):  
S. Muguda ◽  
G. Lucas ◽  
P.N. Hughes ◽  
C.E. Augarde ◽  
C. Perlot ◽  
...  

2013 ◽  
Vol 8 (4) ◽  
pp. 423-438 ◽  
Author(s):  
C. T. S. Beckett ◽  
M. R. Hall ◽  
C. E. Augarde

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