Physical and mechanical properties of Ignimbrite from Arucas, Canary Islands

Valido, J. A.; Cáceres, J.M.; Sousa, Luís

doi:10.1007/s12665-023-11024-9

Cited by 6 publications

(2 citation statements)

References 143 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The proposed classification system defined in Table 4 is more a guideline than a list of mandatory requirements. In fact, many traded ornamental stones have porosity values higher than 11% [47,[79][80][81], to mention one of the rock properties.…”

Section: Proposal For Classification and Limit Values Of The Physical...mentioning

confidence: 99%

Guidelines for Natural Stone Products in Connection with European Standards

Strzałkowski,

Köken,

Sousa

2023

Materials

Self Cite

View full text Add to dashboard Cite

The selection of ornamental stones for specific applications requires technical guidance since it should be based on the durability, service life, and aesthetic value of the stones. In most cases, these fundamentals provide quantitative data on the usability and performance of ornamental stones. The present study attempts to put forward a quantitative classification system for natural stone products concerning critical rock properties. For this purpose, fundamental physical and mechanical rock properties are listed based on European standards. Then, minimum limit values are proposed for different applications of natural stone products based on retrospective analyses of numerous ornamental stone applications. The suggested limit values based on several physical and mechanical rock properties can guide relevant engineers to initially consider possible rock types for use as natural stones in a wide range of applications. In this context, it is believed that the present study contributes to the natural stone industry by discussing the minimum limit values for the consideration of a wide range of rock types possibly usable in the dimension stone industry.

show abstract

Section: Proposal For Classification and Limit Values Of The Physical...mentioning

confidence: 99%

Guidelines for Natural Stone Products in Connection with European Standards

Strzałkowski,

Köken,

Sousa

2023

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Çelik et al obtained a mass loss of 0.49% after 60 salt mist cycles [37] in their study of an andesite from Turkey. Valido et al [38] obtained a mass loss varying between 0.04 and 0.10% in two ignimbrites from the Canary Islands (Spain).…”

Section: Introductionmentioning

confidence: 99%

Effect of Salt Mist Ageing on the Physical and Mechanical Properties of Two Ignimbrites from the Canary Islands (Spain)

Valido,

Cáceres,

Freire-Lista

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

The aim of this research work is to study the effect of salt mist ageing on the physico-mechanical properties of two ignimbrites from the Canary Islands (Spain). Due to their insular nature and extensive coastlines, these regions are highly susceptible to atmospheric salt aerosols, which is a significant weathering agent for building materials. The ignimbrites analysed are marketed under the names “Azul Lomo Tomás de León” and “Marrón de Abades” and are widely used as building stones. Petrographic, mineralogical and chemical properties were obtained via polarisation microscopy, X-ray diffraction and X-ray fluorescence. The samples were subjected to 60 cycles of a salt mist environment, following relevant European standards. Scanning electron microscopy images of the specimens were analysed along with physical properties, including apparent density, open porosity, water absorption, colourimetry and ultrasound propagation velocity, initially and after every 20 cycles, allowing us to assess their evolution during the ageing test. Mechanical properties were evaluated using uniaxial compressive strength and flexural strength under concentrated load tests on two groups of specimens: one unaged and the other subjected to 60 ageing cycles. With the exception of apparent density, the other properties show a decrease between 5% and 30%. However, open porosity increases and is one of the properties most affected by the ageing test.

show abstract

Rotomolded polypropylene‐ignimbrite composites: Giving a second life to mineral dust wastes

Romero,

Suárez,

Díaz

et al. 2024

Polymer Composites

View full text Add to dashboard Cite

The possibility of rotomolding polypropylene (PP) composites with high loadings of a silica‐based dust of ignimbrite, a byproduct of volcanic stone extraction is demonstrated. This study aims to establish the properties of composites with various ratios of mineral dust as a filler in PP matrices at loadings from 5 to 30 wt%, ultimately transforming mining residues into a valuable resource for composite production and creating a value chain around the traditional mining industry. Once the composites were obtained, they were subjected to several characterization techniques to comprehensively assess their mechanical and thermal properties. In general, a high percentage of ignimbrite powder has resulted in a reduction in the mechanical properties of neat PP, although no significant changes were observed for composites at lower loadings. Furthermore, the incorporation of this mineral material modified the thermal properties of the PP, enhancing its thermal stability. The blending of the matrix and filler resulted in a reduction in both the melting crystallization temperatures for highly‐filled composites. Rotomolded items with good aesthetics, with stone‐like appearance, were obtained without any modification on the mineral dust or even without any melt compounding, therefore not increasing the energy consumption during the composites production.Highlights Composites production is a suitable strategy for valorization of mineral residues. Welded ignimbrite residual dust has been used for the first time in composites. Mineral dust has been successfully used in composites obtained by rotomolding. Polypropylene with up to 30% of the stone dust can be processed. Good aesthetics and mechanical features can be obtained with mineral wastes.

show abstract

Physical and mechanical properties of Ignimbrite from Arucas, Canary Islands

Cited by 6 publications

References 143 publications

Guidelines for Natural Stone Products in Connection with European Standards

Guidelines for Natural Stone Products in Connection with European Standards

Effect of Salt Mist Ageing on the Physical and Mechanical Properties of Two Ignimbrites from the Canary Islands (Spain)

Rotomolded polypropylene‐ignimbrite composites: Giving a second life to mineral dust wastes

Contact Info

Product

Resources

About