Thermal Conductivity of Building Materials Employed in the Preservation of Traditional Structures

Stefanidou, Maria; Assael, Marc J.; Antoniadis, Konstantinos; Matziaroglou, Gregory

doi:10.1007/s10765-010-0750-8

Cited by 38 publications

(16 citation statements)

References 2 publications

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“…Abdou and Budaiwi [7] propose comparison of the building insulation materials according to the values of thermal conductivity using standard ASTM C518 and ISO 8301 protocols. The thermal conductivity, in relation from the historic structures as a cultural heritage to new materials, became an interesting topic also for the research of Maria Stefanidou and her colleagues [8].…”

Section: Introductionmentioning

confidence: 99%

Certain Building Materials with Respect to Their Thermal Properties as Well as to Their Impact to Environment

Antonyová¹,

Abdullah²,

Nagapan

et al. 2018

IJIE

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Section: Introductionmentioning

confidence: 99%

Certain Building Materials with Respect to Their Thermal Properties as Well as to Their Impact to Environment

Antonyová¹,

Abdullah²,

Nagapan

et al. 2018

IJIE

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“…The method was also developed for measurements in electroconducting and in highly corrosive liquids [12][13][14][15]. Actually, although the guarded hot plate technique is largely used, the transient hot-wire method is extended to the measurement and calculation of the effective thermal conductivity of granular materials [16][17][18][19], rocks [20][21][22], building materials, [23][24][25], and soils [26][27][28] via multicaptor or multineedle probes.…”

Section: Introductionmentioning

confidence: 99%

Simplified Transient Hot-Wire Method for Effective Thermal Conductivity Measurement in Geo Materials: Microstructure and Saturation Effect

Merckx

Dudoignon

Garnier

et al. 2012

Advances in Civil Engineering

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The thermal conductivity measurement by a simplified transient hot-wire technique is applied to geomaterials in order to show the relationships which can exist between effective thermal conductivity, texture, and moisture of the materials. After a validation of the used "one hot-wire" technique in water, toluene, and glass-bead assemblages, the investigations were performed (1) in glassbead assemblages of different diameters in dried, water, and acetone-saturated states in order to observe the role of grain sizes and saturation on the effective thermal conductivity, (2) in a compacted earth brick at different moisture states, and (3) in a limehemp concrete during 110 days following its manufacture. The lime-hemp concrete allows the measurements during the setting, desiccation and carbonation steps. The recorded ΔT/ ln(t) diagrams allow the calculation of one effective thermal conductivity in the continuous and homogeneous fluids and two effective thermal conductivities in the heterogeneous solids. The first one measured in the short time acquisitions (<1 s) mainly depends on the contact between the wire and grains and thus microtexture and hydrated state of the material. The second one, measured for longer time acquisitions, characterizes the mean effective thermal conductivity of the material.

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“…A traditional lime plaster was compared with the insulation materials. Lime plaster is not considered an insulator although it has good thermal properties (Stefanidou and Assael, 2010). Researchers report thermal conductivity and specific heat capacity of 0.73W/mK and 970J/KgK (Cerny et al, 2006) and 0.83W/mK and 867J/KgK (Vejmelková et al, 2012) for 1:3 (hydrated lime: aggregate) mixes.…”

Section: Methodsmentioning

confidence: 99%

Propiedades térmicas e hídricas de materiales aislantes apropiadas para fábricas históricas = Thermal and hygric properties of insulation materials suitable for historic fabrics

Walker

Pavía

2016

ADE

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ResumenMejorar el rendimiento térmico de los edificios mediante la adaptación del aislamiento puede reducir la pérdida innecesaria de calor y energía minimizando el impacto ambiental. El aislamiento térmico interior es a menudo el elegido en los edificios históricos para preservar sus características. Sin embargo, el aislamiento interior puede aumentar la acumulación de humedad en paredes que socavan su durabilidad. Hay una falta de conocimiento sobre la eficacia de sólidos muros históricos y el impacto del aislamiento interno en su comportamiento higrotérmico. Este artículo investiga las propiedades térmicas e hídricas de siete opciones de aislamiento internos, incluyendo la pintura térmica, aerogel (AG), corcho-cal (CL), cal-cáñamo (HL), silicato de calcio bordo (CSB), tablero de fibra de madera (TFB) y placa de polisocianurato (PIR). Sus propiedades se comparan con un enlucido de cal tradicional. El PIR y el aerogel AG muestran extraordinarias propiedades térmicas que contribuyen a la comodidad y ahorro de energía, y la CL y HL son permeables al vapor y a la capilaridad. Estos tienen aproximadamente el doble de la masa térmica de los otros aislantes. Además, la CL tiene una buena inercia térmica (segunda difusividad más baja) y, a pesar de su contenido orgánico, una adsorción de baja a alta RH.AbstractImproving the thermal performance of buildings by retrofitting insulation can reduce unnecessary heat loss and building operational energy minimising environmental impact. Internal thermal insulation is often favoured for historic buildings to preserve their features. However, internal insulation may increase moisture accumulation in walls undermining their durability. There is a lack of knowledge on the performance of historic solid walls and the impact of internal insulation in their hygrothermal behaviour. This paper investigates the thermal and hygric properties of seven internal insulation options including thermal paint, aerogel (AG), cork lime (CL), hemp lime (HL), calcium silicate board (CSB), timber fibre board (TFB) and polyisocyanurate (PIR) board. Their properties are compared with a traditional lime plaster. The PIR and aerogel AG show outstanding thermal properties that contribute towards indoor thermal comfort and energy savings and the CL and HL are vapour permeable and capillary active. They have approximately double the thermal mass of the other insulations. In addition, the CL has a good thermal inertia (2nd lowest diffusivity) and, in spite of its organic content, a low adsorption at high RH.

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Thermal Conductivity of Building Materials Employed in the Preservation of Traditional Structures

Cited by 38 publications

References 2 publications

Certain Building Materials with Respect to Their Thermal Properties as Well as to Their Impact to Environment

Certain Building Materials with Respect to Their Thermal Properties as Well as to Their Impact to Environment

Simplified Transient Hot-Wire Method for Effective Thermal Conductivity Measurement in Geo Materials: Microstructure and Saturation Effect

Propiedades térmicas e hídricas de materiales aislantes apropiadas para fábricas históricas = Thermal and hygric properties of insulation materials suitable for historic fabrics

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