Experimental analysis and modelling of the mechanical behaviour of earthen bricks

Piattoni, Quintilio; Quagliarini, Enrico; Lenci, Stefano

doi:10.1016/j.conbuildmat.2010.11.039

Cited by 116 publications

(63 citation statements)

References 21 publications

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“…However, this may be explicable by the low aggregate or fiber content (below 1% by weight in the 4 cases). The compressive strength decreased in 11 references [5,15,23,26,29,34,35,41,42,53,58]. It was found by Algin and Turgut [58] that the dry compressive strength was inversely proportional to the cotton content: a decrease of 71% was reached for an addition of 7% of cotton.…”

Section: Compressive Strength and Elastic Modulusmentioning

confidence: 99%

Plant aggregates and fibers in earth construction materials: A review

Laborel-Préneron

Aubert

Magniont

et al. 2016

Construction and Building Materials

343

157

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Earth as a building material is increasingly being studied for its low environmental impact and its availability. Plant aggregates and fibers have been incorporated into the earth matrix in the aim of enhancing performance for thousands of years but scientific studies began quite recently. The present paper reviews the state of the art of research on the influence of these various natural and renewable resources in unfired earth materials such as compressed earth blocks, plasters, and extruded and stabilized blocks. This review, based on 50 major studies, includes characterization of the particles and treatments, and recapitulative tables of the material compositions, and the physical, mechanical, hygrothermal and durability performances of earth-based materials. A lack of references on hygroscopic and durability properties was observed. Future research orientations are thus suggested to promote and develop this type of sustainable material, which provides a solution for saving energy and natural resources. Highlights Earth-based products with plant aggregates as a sustainable material are reviewed.  Physicochemical and mechanical properties of plant aggregates or fibers are reviewed.  Mechanical, hygrothermal and durability performances of the composites are reviewed.  Further investigations are needed to promote these materials.

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Section: Compressive Strength and Elastic Modulusmentioning

confidence: 99%

Plant aggregates and fibers in earth construction materials: A review

Laborel-Préneron

Aubert

Magniont

et al. 2016

Construction and Building Materials

343

157

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“…Since the Ed strongly depends on the ultrasonic wave propagation velocity, because it varies with its square, Ed values followed the trend of increase of velocity over the storage time (Table 5). The highest Ed values were 4524 and 2045 MPa, for the treatments T 1 and T 2 , respectively, which were much higher than those reported for the traditional adobes, which vary from 100 to 300 MPa (Piattoni et al, 2011;Adorni et al, 2013).…”

Section: Agementioning

confidence: 67%

Quality evaluation of soil-cement-plant residue bricks by the combination of destructive and non-destructive tests

Ferreira

Cunha

2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TResidues from agricultural activity can be used to improve the quality of soil-based bricks, constituting an interesting alternative for their destination. The technical quality of soilcement-plant residue bricks was evaluated by the combination of non-destructive and destructive methods. A predominant clayey soil, Portland cement and residues of husks of both rice and Brachiaria brizantha cv. Marandu (0, 10, 20, 30 and 40%, in mass, in substitution to the 10% cement content) were used. The bricks were submitted to destructive (water absorption and compressive strength) and nondestructive (ultrasound) tests for their physical and mechanical characterization. Results from both destructive and non-destructive tests were combined to determine the quantitative parameter named "anisotropic resistance" in order to evaluate the quality of the bricks. The addition that promoted best technical quality was 10% residue content, regardless of the residue type. The anisotropic resistance proved to be adequate for the technical quality evaluation of the bricks.Avaliação da qualidade de tijolos de solo-cimento-resíduos vegetais por meio da combinação de testes destrutivos e não-destrutivos R E S U M OResíduos provenientes da atividade agrícola podem ser utilizados para a melhoria da qualidade de tijolos, constituindo-se como interessante alternativa de sua destinação. Avaliou-se a qualidade técnica de tijolos de solo-cimento-resíduos vegetais pela combinação de testes destrutivos e não-destrutivos. Utilizou-se um solo predominantemente argiloso, cimento CP II-F 32 e resíduos das cascas de arroz e de braquiária (Brachiaria brizantha cv. Marandu) nos teores (em massa) de 0, 10, 20, 30 e 40% em substituição ao teor de 10% do cimento. Os tijolos foram submetidos a ensaios destrutivos (absorção de água e compressão simples) e não-destrutivos (ultrassom) para sua caracterização físico-mecânica; em seguida, os resultados dos ensaios destrutivos e não-destrutivos foram combinados para se determinar o parâmetro "resistência anisotrópica" utilizado na avaliação da qualidade técnica dos tijolos, tendo sido obtido o melhor resultado com o teor de 10% de resíduo em substituição ao cimento, independentemente do tipo do resíduo. Concluiu-se que a resistência anisotrópica se mostra adequada para a avaliação da qualidade técnica dos tijolos.

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“…The test units include full size bricks; prisms with length-to-width ratios from 2 to 0.5 and cubes with edges of 40, 50, 100 and 150 mm (Illampas et al, 2014;Piattoni et al, 2011;. The use of cylinders with 1:1 and 2:1 aspect ratios and diameters ranging from 50 to 150 mm is also quite common (Illampas et al, 2014).…”

Section: Mechanical Propertiesmentioning

confidence: 99%