Lime–cement mortars for coating with improved thermal and acoustic performance

Palomar, Irene; Barluenga, Gonzalo; Puentes, Javier

doi:10.1016/j.conbuildmat.2014.11.012

Cited by 70 publications

(46 citation statements)

References 28 publications

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“…Furthermore, not only do they offer a fair durability, but also a low manufacturing cost and good thermal insulation (20). Concrete produced from this type of clays and derivatives presents low density values appropriate for lightweight applications (21)(22)(23). The material here considered can be crushed and reused in the preparation of new lightened concrete.…”

Section: Introductionmentioning

confidence: 99%

Acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates

Carbajo¹,

Esquerdo-Lloret²,

Ramis³

et al. 2015

Mater. construcc.

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ABSTRACT:The use of sustainable materials is becoming a common practice for noise abatement in building and civil engineering industries. In this context, many applications have been found for porous concrete made from lightweight aggregates. This work investigates the acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates. These natural resources can still be regarded as sustainable since they can be recycled and do not generate environmentally hazardous waste. The experimental basis used consists of different type specimens whose acoustic performance is assessed in an impedance tube. Additionally, a simple theoretical model for granular porous media, based on parameters measurable with basic experimental procedures, is adopted to predict the acoustic properties of the prepared mixes. The theoretical predictions compare well with the absorption measurements. Preliminary results show the good absorption capability of these materials, making them a promising alternative to traditional porous concrete solutions. RESUMEN: Propiedades acústicas del hormigón poroso a base de áridos ligeros de arlita y vermiculita.El uso de materiales sostenibles se está convirtiendo en una práctica común para la reducción de ruido en las industrias de la edificación e ingeniería civil. Este trabajo investiga las propiedades acústicas de hormigón poroso fabricado a partir de áridos ligeros de arlita y vermiculita. Estos recursos naturales todavía pueden considerarse sostenibles ya que pueden ser reciclados y no generan residuos peligrosos para el medio ambiente. La base experimental utilizada se compone de especímenes de diferente tipo cuyas prestaciones acústicas se evalúan en un tubo de impedancia. Adicionalmente, se ha adoptado un modelo teórico simple para medios porosos granulares, basado en parámetros medibles con procedimientos experimentales básicos, con objeto de predecir las propiedades acústicas de las mezclas preparadas. Las predicciones teóricas muestran una buena concordancia con las medidas de absorción. Los resultados preliminares demuestran la buena capacidad absorbente de estos materiales, haciendo de ellos una alternativa prometedora a las soluciones de hormigón poroso tradicionales.

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Section: Introductionmentioning

confidence: 99%

Acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates

Carbajo¹,

Esquerdo-Lloret²,

Ramis³

et al. 2015

Mater. construcc.

View full text Add to dashboard Cite

show abstract

“…The influence of w/b ratio on early age behaviour (free shrinkage and early age cranking) and pore structure (open porosity and capillary water absorption) was identified [3]. It was highlighted that the inclusion of different components (GGA, LWA and fibres) varied the w/b ratio required to achieve a plastic consistency.…”

Section: Materials and Compositionsmentioning

confidence: 99%

“…Besides, the thermal conductivity (λ) and sound absorption coefficient (α NRC ) were calculated. The experimental set-up and results have been previously published [3] and the data are summarised in Table 2.…”

Section: Materials and Compositionsmentioning

confidence: 99%

“…(1), (2), (3), (4) and (5) [5]. Where ρ is the apparent (bulk) density (g/cm 3 ) and V P and V S are the P-and S-wave velocity (m/s), respectively. …”

Section: Characterisation Of Lime-cement Mortars By Ultrasonic Pulsesmentioning

confidence: 99%

“…The assessment included early age cracking, mechanical, physical and acoustic and thermal performance. A parametric analysis of those results allowed to detect some relations: open porosity, early age shrinkage and cracking risk were related to water to binder ratio; mechanical and acoustic properties were affected by open porosity; thermal conductivity depended on density [3].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment by non-destructive testing of new coating mortars for retrofitting the Architectural Heritage

Palomar¹,

Barluenga²,

Puentes³

2015

WIT Transactions on the Built Environment

Self Cite

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Repairing or replacing the traditional coating lime-based mortars is a common measurement to retrofit building facades. The use of appropriate techniques and materials according to the originals is essential to ensure architectural values and to preserve the Architectural Heritage. Consequently, it is necessary to investigate the microstructure and properties of both traditional and today's mortars by proper characterization. Non-destructive testing techniques (NDT) are always preferred because they can be tuned in the laboratory and also applied to evaluate on-site performance. In this paper, the assessment of lime-cement repair mortars' microstructure and performance is carried out using NDT by ultrasonic pulses (US). Ten lime-cement mortars were designed using: hydrated lime; white cement; gap-graded siliceous aggregate (2-3 mm); three lightweight aggregates, expanded clay, perlite and vermiculite; two types of short fibres, cellulose and polypropylene. The samples were evaluated with compression and shear US waves (P-and S-respectively). Transmission times (UPV), compressive modulus (M), shear modulus (G), dynamic Young modulus (E), bulk modulus (K) and Poisson's ratio (ν) were obtained. The raw US signals were also analysed by Hilbert transformation (HT) and Fast Fourier transformation (FFT). HT facilitated P-and S-wave transmission time measurements while FFT simplified the evaluation of US attenuation. Then, bulk density, open porosity, capillary absorption, thermal conductivity, acoustic absorption and compressive and flexural strength of samples were compared to the US parameters. NDT by ultrasonic pulses showed very good correlations with hardened properties and demonstrated to be a useful tool for predicting the physical and mechanical performance of lime-cement repair mortars.

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Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

Liu,

et al. 2023

Polymer Composites

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The preparation of high‐filled composites by compounding with calcium carbonate (CaCO3) and polymer has received much attention. However, challenges such as enhancing the interaction between CaCO3 and the polymer and improving the performance of the resulting composites need to be addressed. In this paper, composites with a high filler content were made by adding fillers of various CaCO3 gradations into unsaturated polyester resin (UPR). The mechanical properties, curing degree, component distribution, and structural phases of resulting blends were analyzed by a universal testing machine, differential scanning calorimeter, Raman, and scanning electron microscope/energy‐dispersive x‐ray spectroscopy (EDX), respectively. Based on the research findings, optimizing the CaCO3 gradation significantly increased the strength of the resulting blends. The average flexural strength increased by 343.5%, while the average compressive strength increased by 888.9%. The composites with an optimized gradation of filler showed a significant reduction in uncured domains, leading to an improvement in the curing degree of the composites. The interfacial defects between the optimized graded CaCO3 filler and the UPR were reduced, resulting in a uniform distribution with no visible interface. The Raman and EDX analyses show that the gradation optimization technique has successfully prevented structural phase separation and enhanced the tendency to agglomerate between CaCO3 and UPR. This study proposes an effective method for developing high‐performance UPR/CaCO3 composites with a high filler content.Highlights The optimized gradation of CaCO3 was used as filler to address the weak interaction of CaCO3 with the UPR in a high‐filled UPR/CaCO3 composite system while improving the performance of the composite. The gradation optimization of CaCO3 filler can improve the morphology and reduce the porosity of the high‐filled UPR composites. The gradation optimization of CaCO3 filler can effectively improve the curing effect of UPR. Optimizing the CaCO3 gradation resulted in a significant increase in the average flexural strength (by 343.5%) and average compressive strength (by 888.9%) of the resulting blends.

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Lime–cement mortars for coating with improved thermal and acoustic performance

Cited by 70 publications

References 28 publications

Acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates

Acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates

Assessment by non-destructive testing of new coating mortars for retrofitting the Architectural Heritage

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites

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Lime–cement mortars for coating with improved thermal and acoustic performance

Cited by 70 publications

References 28 publications

Acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates

Acoustic properties of porous concrete made from arlite and vermiculite lightweight aggregates

Assessment by non-destructive testing of new coating mortars for retrofitting the Architectural Heritage

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO3 composites

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Product

Resources

About

Effect of inorganic particles gradation on the properties of high‐filled unsaturated polyester resin/CaCO₃ composites