Preparation and evaluation of polymer/clay nanocomposite surface treatments for concrete durability enhancement

Scarfato, Paola; Maio, Luciano Di; Fariello, Maria Letizia; Russo, Paola; Incarnato, Loredana

doi:10.1016/j.cemconcomp.2011.11.006

Cited by 92 publications

(41 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is due to high level of clay loading resulted in agglomeration due to the strong interactions between clay particles. A critical limit of layered silicate content is reported by many authors, due to the poorer exfoliation of nanofillers resulting in lower performance of the properties [30][31][32][33]. Similar decreases were observed in several polymer/nano clay composite systems such as 6% Cloisite 30B addition into Fluoline CP and Antipluviol S resins on the concrete surfaces [34].…”

Section: Surface Characteristics Of the Uncoated And Coated Marblessupporting

confidence: 58%

“…1) containing 7 wt% clay shifted to lower angles with broader peaks showing intercalated flocculated structure. This can be explained by the consequence of the coalescence phenomena due to the strong interactions between the silicate platelets at the highest clay content as commonly reported in the literature [22,[30][31][32][33]. The results indicated that high interaction between the layered silicates and polymer matrix was achieved for only low clay loaded (1, 2 and 5 wt %) samples.…”

Section: Structural Characterization Of Bio-nano Composite Coatingssupporting

confidence: 56%

See 1 more Smart Citation

Sustainable bio-nano composite coatings for the protection of marble surfaces

Ocak¹,

Sofuoğlu²,

Tıhmınlıoğlu³

et al. 2015

Journal of Cultural Heritage

View full text Add to dashboard Cite

a b s t r a c tWater repellency on natural stone surfaces is the most important issue in the protection of stone monuments from effects of atmospheric pollutants. In this study, effectiveness of a bio-nano composite coating, composed of a biodegradable polymer (poly-L-lactide [PLA]) and montmorillonite clay (MMT) was investigated for the protection of marble surfaces from pollution. The clay dispersion in polymer matrices was analyzed by using Scanning Tunnel Electron Microscopy (STEM) and X-Ray Diffraction (XRD), while protection performance was investigated by the measurement of surface roughness, wettability, water vapor permeability, capillary water absorption, and color changes on the marble surfaces. As a result, no alteration on the color of coated marbles was observed, significant improvement was obtained for hydrophobicity of the surface and inhibition of sulfation reaction on the exposed marble surfaces under acidic atmosphere. It could be said that PLA based nanocomposites seem to be promising materials as protective coating agents in reducing the effects of water and atmospheric pollutants on marble surfaces.

show abstract

Section: Surface Characteristics Of the Uncoated And Coated Marblessupporting

confidence: 58%

Section: Structural Characterization Of Bio-nano Composite Coatingssupporting

confidence: 56%

Sustainable bio-nano composite coatings for the protection of marble surfaces

Ocak¹,

Sofuoğlu²,

Tıhmınlıoğlu³

et al. 2015

Journal of Cultural Heritage

View full text Add to dashboard Cite

show abstract

“…The application of nanocomposite surface treatments to enhance the durability of concrete substrates has already been experimented in previous research activities. For instance in [9] different amounts of nanoclay composites have been added to a concrete substrate leading to a significant improvement of the protection performances. In the present work preliminary natural aging tests have been performed on traditional ceramic and painted concrete tiles in order to point out the main aging mechanisms and to determine the predominant factors responsible for color and reflectance degradation.…”

Section: Introductionmentioning

confidence: 99%

Nanobased coatings with improved NIR reflecting properties for building envelope materials: Development and natural aging effect measurement

Revel

Martarelli

Bengochea

et al. 2013

Cement and Concrete Composites

View full text Add to dashboard Cite

A significant contribution to the reduction of the Urban Heat Island effect and cooling energy demand is given today by the so called cool materials for the building envelope with enhanced reflecting and emitting properties. The present study shows some preliminary results of the EU project COOL-Coverings aiming at developing innovative nanobased coatings with improved Near InfraRed reflecting capabilities. The key idea is to work on a nanoscale by tuning the crystal size and distribution of selected nanostructured oxides . Cool prototypes of brown colored ceramic tiles and green acrylic paints have been developed and compared to conventional ones showing an improvement in solar reflectance without any perceptual difference in color. The material characterization has been based on the measurement of spectral reflectance on a wide wavelength range (300-2200nm) using a UV/Vis/NIR spectrophotometer. In parallel with the development of nanostructured cool materials, natural aging tests on ceramic and painted concrete tiles have been performed with the goal of identifying and measuring the effects of the main aging factors affecting reflective properties. A significant drop of solar reflectance for paints has been noticed from the very beginning of the testing period while ceramic tiles have confirmed excellent resistance to weathering. However, both for paints and tiles the effect of soiling cannot be neglected and, if combined to weathering, it can lead to a solar reflectance reduction as high as 10%. This preliminary study will pave the way to a future development of dedicated accelerated aging testing procedures for cool materials.

show abstract

“…Biocides can be mixed with consolidants and water repellents to promote protection against future biological growth (Ditaranto et al 2010;Barrionuevo and Gaylarde 2011;Khamova et al 2012;Pinna et al 2012). Biological agents such as plant extracts have also been used (Afifi 2012 Nanotechnology has also proposed for protection against biological agents and other pollutants with examples of nanoparticulates of SiO 2 (Manoudis et al 2009;Matziaris et al 2011), organomodified montmorillonite (D'Arienzo et al 2008Scarfato et al 2012), titanium dioxide and zinc oxide (Fonseca et al 2010;Gladis et al 2010;Maury and De Belie 2010;MacMullen et al 2012;La Russa et al 2012;Quagliarini et al 2012), copper (Ditaranto et al 2010) or diamonds (Khamova et al 2012).…”

Section: Protective Treatmentsmentioning

confidence: 98%

Conservation of stony materials in the built environment

Alves

Sanjurjo-Sánchez

2015

Environ Chem Lett

View full text Add to dashboard Cite

Materials in the built environment are exposed to several agents that promote alteration processes resulting in features that might be considered detrimental of its value. There are diverse possible intervention measures that might, however, have unwanted side effects. Here are reviewed the main issues related to the struggle against these alteration processes, from the consideration of the intervention criteria to strategic considerations on the organisation of the intervention that must include temporal and spatial features of alteration processes, as well as possible interventions on the surroundings of the materials and in the materials, including its replacement. The longterm effectiveness of these interventions is linked with the global strategy namely in relation to the conditions that promote alteration processes. Some sustainability questions related to the intervention operations are also considered such as the use of toxic substances and the consumption of resources.

show abstract

Preparation and evaluation of polymer/clay nanocomposite surface treatments for concrete durability enhancement

Cited by 92 publications

References 33 publications

Sustainable bio-nano composite coatings for the protection of marble surfaces

Sustainable bio-nano composite coatings for the protection of marble surfaces

Nanobased coatings with improved NIR reflecting properties for building envelope materials: Development and natural aging effect measurement

Conservation of stony materials in the built environment

Contact Info

Product

Resources

About