Equilibrium moisture content of clay bricks: The influence of the porous structure

Raimondo, M.; Dondi, Michele; Mazzanti, Francesca; Stefanizzi, Pietro; Bondi, Paolo

doi:10.1016/j.buildenv.2005.10.017

Cited by 33 publications

(18 citation statements)

References 2 publications

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“…A relatively restricted range of the average moisture content is specified for the sampled locations (3±1% except 318, 5±1%), and these margins make a small contribution (<3% of the overall error) to the overall uncertainty in the age. This seems to be reasonable in the light of recent studies (Raimondo et al, 2006) of the effect of microstructure and pore morphology on the equilibrium moisture content (MEq; absorbed water per dry volume) of modern fired clay bricks, where a value of MEq converted to absorbed water per unit dry weight of ~3% was obtained for bricks with a total porosity of ~35% (70% RH).…”

Section: Age Calculationmentioning

confidence: 92%

“…Significant departures from steady-state conditions in the past would consequently have potentially important implications on the interpretation of dates and hence this needs to be considered when selecting samples. A more quantitative approach to arriving at an estimate of the average moisture content is likely to require an analysis of the pore size distribution (Raimondo et al, 2006) and this type of investigation has yet to be explored.…”

Section: Age Calculationmentioning

confidence: 99%

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Methodological Developments in the Luminescence Dating of Brick From English Late‐medieval and Post‐medieval Buildings*

Bailiff

2007

Archaeometry

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Fired clay brick samples, obtained from a group of seven high‐status late‐medieval and post‐medieval buildings in England ranging in age from c. ad 1390 to 1740, were dated by the luminescence method using an optically stimulated luminescence (OSL) technique. The results obtained indicate that, when applied to quartz extracted from brick, the technique is capable of producing dates that are in consistently good agreement with independent dating evidence for the buildings. For six samples taken from a group of four dating ‘control’ buildings the mean difference between the central values of luminescence and assigned ages was 5 ± 10 years (SD, n = 6). The methodology used is appropriate for application to other standing buildings in other temporal and geographic regions, and may be used with confidence where conventional dating methods are less certain. The study also examines the luminescence characteristics of quartz and the characteristics of the lithogenic radionuclides in brick samples and identifies various aspects related to the assessment of experimental uncertainty in testing the reliability of the method.

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Section: Age Calculationmentioning

confidence: 92%

Section: Age Calculationmentioning

confidence: 99%

Methodological Developments in the Luminescence Dating of Brick From English Late‐medieval and Post‐medieval Buildings*

Bailiff

2007

Archaeometry

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“…The porosity does enable the prediction of not only the sorption capacities but also, predominantly, the distribution of pore sizes [30].This distribution for both bricks was different, with a higher pore size in brick Br 1 . The size distribution was monomodal (5 mm) for Br 1 and multimodal (0.01e0.80 mm) for Br 2 .…”

Section: Water Vapor Permeability Testsmentioning

confidence: 99%

Experimental evaluation of hydric performances of masonry walls made of earth bricks, geopolymer and wooden frame

Fouchal

Gouny

Maillard³

et al. 2015

Building and Environment

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“…Recent studies have considered the impact of the cladding materials used on building walls on CO 2 emissions, and their influence on energy consumption (3). Other studies have sought to further improve the materials used in building envelopes by showing how the porous nature of clay bricks can improve thermal characteristics (4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

Influence of the type of lightweight clay brick on the equivalent thermal transmittance of different types of façades on buildings

Morales¹,

Muñoz²,

Juárez³

et al. 2016

Mater. construcc.

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This paper compares the equivalent thermal transmittances of different façades built using commercial clay bricks with three different thicknesses and façades made using the same method but with ceramic bricks with optimized rhomboidal interior geometry.Equivalent thermal transmittances of 0.300 W/m 2 ·K were recorded for the rhomboidal brick with a thickness of 0.290 m and a façade with thermo-acoustic insulation and a large format brick on the interior, but the final thickness of the façade was 0.445 m. RESUMEN: Influencia del tipo de bloque de arcilla aligerada en la transmitancia térmica equivalente de diferentes tipos de fachadas en edificios.En el presente trabajo se comparan las transmitancias térmicas equivalentes de diferentes fachadas ejecutadas con bloques comerciales de tres espesores 0,290 m, 0,240 m y 0,190 m, con el mismo montaje pero con un bloque cerámico optimizado con geometría interior romboidal.Se ha obtenido una transmitancia térmica equivalente de 0,300 W/m 2 ·K para el ladrillo con geometría romboidal de 0,290 m de espesor y pared con aislamiento termoacústico y gran formato en el interior, con un espesor total de fachada de 0,445 m.Para fachadas ventiladas con el ladrillo romboidal propuesto con espesores de 0,290 y 0,240 m, se obtiene una mejora de un 8%-9%, con valores de 0,312 W/m 2 ·K y 0,339 W/m 2 ·K, respectivamente. Podemos concluir que, dada la pequeña diferencia en términos térmicos, la mejor opción es el uso de ladrillos de 0,240 m de espesor, siempre y cuando el espesor total de fachada no exceda los 0,300 m.

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Equilibrium moisture content of clay bricks: The influence of the porous structure

Cited by 33 publications

References 2 publications

Methodological Developments in the Luminescence Dating of Brick From English Late‐medieval and Post‐medieval Buildings*

Methodological Developments in the Luminescence Dating of Brick From English Late‐medieval and Post‐medieval Buildings*

Experimental evaluation of hydric performances of masonry walls made of earth bricks, geopolymer and wooden frame

Influence of the type of lightweight clay brick on the equivalent thermal transmittance of different types of façades on buildings

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