Thermophysical properties of hydrophobised lime plasters – The influence of ageing

Pavlíková, Milena; Zemanová, Lucie; Pavlík, Zbyšek

doi:10.1063/1.4994510

Cited by 1 publication

(4 citation statements)

References 12 publications

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“…The total open porosity was calculated on the basis of knowledge of the bulk and apparent density values. The relative expanded uncertainty of applied testing method was 5% [16].…”

Section: Basic Physical Propertiesmentioning

confidence: 99%

“…Studied renders were characterized by their basic structural properties such as bulk density, apparent density and total open porosity. The bulk density was measured according to the standard EN 1015-10 [15] by weighing sample dry mass and determination of its volume by a digital calliper [16]. The apparent density was accessed using automatic helium pycnometer Pycnomatic ATC (Porotec).…”

Section: Basic Physical Propertiesmentioning

confidence: 99%

“…The measurement of thermal parameters was conducted on a transient impulse method principle using device ISOMET 2114 (Applied Precision) equipped with surface circular probe [16]. The dried plaster samples in the form of cubes with side dimension of 70 mm were used for the measurement [16]. Additionally, thermophysical parameters of perlite mix, and silica aggregate in dependence on compaction time were tested.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…For the thermal conductivity (λ) in the range 0.05-2.0 W/mK was the measuring accuracy 10% of reading. For the volumetric heat capacity (c) in the range 4.0×10 4 −4.0×10 6 J/m 3 K, the measuring accuracy was 15% of reading [16].…”

Section: Thermal Propertiesmentioning

confidence: 99%

See 3 more Smart Citations

The Use of Lightweight Aggregate in Preparation of Thermal Insulation Lime-Based Renders

Pokorný¹,

Pavlíková²,

Pavlík³

2019

APP

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Lime-based renders are common part of historical or older buildings that don’t always provide a comfortable inside climate due to the problems with high thermal losses. Thermal insulation renders may possibly retrofit or replace original render layers and mitigate negative impacts of harmful external climate. In this respect, determination of basic structural, mechanical and thermal properties of lime-based renders containing various amount of perlite that was used as partial silica sand replacement is presented in the paper. Experimental tests performed for 28 days high relative humidity-cured samples showed significant decrease in bulk density and apparent density for renders with incorporated perlite compared to reference render mix composed of silica sand-based aggregate only. Accordingly, porosity of perlite mortars was significantly higher, what led to the lower thermal conductivity values in comparison with reference render. Although the mechanical resistance of perlite-modified renders was lower than that of reference material, it was still sufficient for their use as thermal insulation layer compatible with older construction materials. Based on the obtained data it can be concluded, the analysed hydrated lime-based plasters with perlite admixture can be considered as promising materials for buildings refurbishment.

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“…The total open porosity was calculated on the basis of knowledge of the bulk and apparent density values. The relative expanded uncertainty of applied testing method was 5% [16].…”

Section: Basic Physical Propertiesmentioning

confidence: 99%

Section: Basic Physical Propertiesmentioning

confidence: 99%