Soil and Rock Properties in a Young Volcanic Deposit on the Island of Hawaii

Brandes, Horst G.; Robertson, Ian; Johnson, G.

doi:10.1061/(asce)gt.1943-5606.0000453

Cited by 14 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are, however, exceptions to the low water absorptions suggested above. For example, Brandes et al [27] reported that Hawaiian basaltic coarse aggregate can absorb up to 8.8% of water. High water absorption values have also been reported for carbonate and diabasic/basaltic aggregates quarried in Cyprus [28,29].…”

Section: Water Absorption and Relative Densitymentioning

confidence: 99%

Correlations between the Properties of Crushed Fine Aggregates

Fournari

Ioannou

2019

Minerals

View full text Add to dashboard Cite

Aggregates are essential in the production of composite building materials and their properties and characteristics influence the performance of these materials in use. Nevertheless, despite the existence of several standardized and other methods for testing aggregates, the inherent inhomogeneity of these geomaterials does not permit the establishment of rigid specifications for their quality. Hence, research on aggregate testing and quality control is always timely. This paper presents the results of standardized (soundness, Micro-Deval, sand equivalent, methylene blue, water absorption, and relative density) and non-standardized (PXRD) laboratory tests performed on crushed fine aggregates of different mineralogical composition quarried in Cyprus. From these results, it is evident that the mineralogical composition of aggregates affects their physicomechanical properties. A good correlation was observed between the magnesium sulphate soundness coefficient and the Micro-Deval coefficient. This may lead to the introduction of an alternative test method for the quality testing of fine aggregates at European level. A reasonable correlation was also noted between the methylene blue and sand equivalent test results, despite the fact that the literature does not seem to support such a relationship. No further correlations were observed among the rest of the properties investigated.

show abstract

Section: Water Absorption and Relative Densitymentioning

confidence: 99%

Correlations between the Properties of Crushed Fine Aggregates

Fournari

Ioannou

2019

Minerals

View full text Add to dashboard Cite

show abstract

“…The interpretations of the results were proposed according to studies in the areas, which are well known and geologically mapped by researchers. Studies, such as those by Brandes et al (2011), carried out using the same lithologies as in the present study, which obtained similar results and interpretations of seismic wave velocities, were also considered.…”

Section: Cordeirópolis Dammentioning

confidence: 66%

Non-Destructive Investigation on Small Earth Dams using Geophysical Methods: Seismic Surface Wave Multichannel Analysis (MASW) and S-Wave Refraction Seismic Methods

Netto¹,

Gandolfo²,

Filho³

et al. 2020

Braz J Geophys

View full text Add to dashboard Cite

ABSTRACT. The application of non-destructive methods of investigation in dams, such as refractive seismic analysis and multichannel surface wave analysis (MASW) are increasingly effective from the point of choosing the best dam site, as well as in the phases of construction and maintenance of the structure. Considering that the objective of the use of the geophysical surveys in the dam structure is to detect the internal flow of fluids, to detect the presence of voids and/or craters, to find possible fracture zones and to identify variations in the saturation level of the massif, characteristics related to the permeability and directly linked to the stability of the dam, the geophysical methods stand out as excellent tools because, unlike probes, for example, they can cover a large area of study quickly and with a good cost effectiveness. This paper aims to present the results of the correlation between the multichannel surface seismic wave analysis (MASW) method and the S wave seismic refraction method in two small earth dams in the countryside of the State of São Paulo, Brazil, more precisely in the cities of Cordeirópolis and Ipeúna. The main goal was to obtain the depths of the rocky top and the saturated / unsaturated zone of the earth dams using seismic tests under conditions of lack of information about the construction of the dam. The application of geophysical methods in dams that do not previously have important information (presence of drainage blanket, vertical / horizontal filters, for example) proves to be a very interesting non-destructive investigation technique. Keywords: geophysics in dams, MASW, seismic refraction, dam investigation. RESUMO. A aplicação de métodos não destrutivos de investigação em barragens, como o método da sísmica de refração e a análise multicanal de ondas de superfície (MASW), são cada vez mais eficazes desde a fase de escolha do melhor local para a instalação da barragem, bem como nas fases da construção e manutenção da estrutura. Considerando que o objetivo do uso dos ensaios geofísicos na estrutura da barragem busca detectar o fluxo interno de fluidos, observar a presença de vazios e/ou crateras, encontrar possíveis zonas de fratura e identificar variações no nível de saturação do maciço, características relacionadas à permeabilidade e diretamente ligada à estabilidade da barragem, os métodos geofísicos se destacam como excelentes ferramentas, pois, ao contrário das sondagens, por exemplo, podem cobrir uma grande área de estudo com rapidez e economia. Este trabalho tem como objetivo apresentar os resultados da correlação entre o método de análise multicanal de ondas sísmicas de superfície (MASW) e o método sísmico de refração com ondas S em duas pequenas barragens de terra no interior do Estado de São Paulo, mais precisamente nas cidades de Cordeirópolis e Ipeúna. O objetivo principal foi o de obter as profundidades do topo rochoso e da zona saturada/insaturada das barragens de terra fazendo uso de ensaios sísmicos em condições de ausência de informações a respeito da construção do barramento. A aplicação de métodos geofísicos em barragens que não possuem previamente informações importantes (presença de tapete drenante, filtros verticais/horizontais, por exemplo) mostra-se como uma técnica de investigação não destrutiva bastante interessante.Palavras-chave: geofísica em barragens, MASW, sísmica de refração, investigação em barragens.

show abstract

“…The specific gravity values of compact basalt is estimated to be 2.89. The density and specific gravity values of compact basalt is compared with the available data from the literature and observed to be well in agreement [18,19].…”

Section: Physical Propertiesmentioning

confidence: 80%

“…The elastic modulus from the stress-strain graph at 50% of peak stress value is calculated to be 24.00 GPa [24]. The static uniaxial compressive strength of the tested rock is compared with the available data from the literature and observed to be well in agreement [19,20].…”

Section: Static Uniaxial Compressive Strengthmentioning

confidence: 93%

Mechanical Characterization of Compact Basalt by Using SHPB Device

Mishra

Chakraborty

Matsagar

2018

The 18th International Conference on Experimental Mechanics

View full text Add to dashboard Cite

In the present work, dynamic stress-strain response of compact basalt is tested under high loading rates using 38 mm split Hopkinson pressure bar (SHPB) device. The physical and static mechanical properties of compact basalt, e.g., density, specific gravity, static compressive strength and elastic modulus values are also determined. Petrological studies of compact basalt are carried out through X-ray diffraction (XRD) test and scanning electron microscope (SEM) test. In the SHPB tests, it is observed from the stress-strain response that the dynamic peak stress increases with increasing strain rate however the elastic modulus is nearly constant with increase in strain rate. Dynamic force equilibrium at the incident and transmission bar ends of the rock samples is attained in all tests till the failure of the rock samples. Dynamic increase factor (DIF) for the rock is determined at a particular strain rate by comparing the dynamic to static peak compressive stress. Correlation equation for dynamic strength increase factor with respect to strain rate has been proposed herein.

show abstract

Soil and Rock Properties in a Young Volcanic Deposit on the Island of Hawaii

Cited by 14 publications

References 6 publications

Correlations between the Properties of Crushed Fine Aggregates

Correlations between the Properties of Crushed Fine Aggregates

Non-Destructive Investigation on Small Earth Dams using Geophysical Methods: Seismic Surface Wave Multichannel Analysis (MASW) and S-Wave Refraction Seismic Methods

Mechanical Characterization of Compact Basalt by Using SHPB Device

Contact Info

Product

Resources

About