Experimental investigation of the uniaxial compressive behavior of thin building granite

Huang, Baofeng; Liu, Wensheng

doi:10.1016/j.conbuildmat.2020.120967

Cited by 15 publications

(3 citation statements)

References 48 publications

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“…The term ‘granite’ is used to describe all igneous rock types used as building materials, so other igneous rocks will be considered as ‘granite’ in this study. Previous studies have mainly analyzed the structural properties of granite samples, but more research is needed to evaluate their radiation shielding capabilities [ 20 , 21 , 22 ]. Since the granites already exist as common building material or decorative tiles in various dwellings, thus this study investigates the capability of the common existence of granites in the purpose of gamma radiation shielding.…”

Section: Introductionmentioning

confidence: 99%

The Potentials of Egyptian and Indian Granites for Protection of Ionizing Radiation

et al. 2021

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This paper aims to study the radiation shielding characteristics and buildup factor of some types of granite in Egypt. The mass attenuation coefficient (MAC) for three types of granite (gandola, white halayeb, and red aswani) was experimentally determined, and the experimental results were validated by XCOM software. The relative deviation between the two methods does not exceed 3% in all discussed granite samples, which means that MAC calculated through the experimental and XCOM are in suitable agreement. The effective atomic number (Zeff) varies from 13.64 to 10.69, 13.68 to 10.59, and 13.45 and 10.66 for gandola, white halayeb, and red aswani, respectively. As well as the equivalent atomic number (Zeq) was calculated in a wide range of energy to deduce the exposure (EBF) and energy absorption (EABF) buildup factors for the studied granite materials. The linear attenuation coefficient (LAC), half-value layer (HVL), mean free path (MFP) were calculated at each investigated energy and showed that the most effective shielding ability at high energy was red aswani, while at low energy, the shielding ability was nearly constant for studied granites. The present study forms the first endeavor to obtain the radiation shielding properties of the studied materials to be used in practical applications.

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Section: Introductionmentioning

confidence: 99%

The Potentials of Egyptian and Indian Granites for Protection of Ionizing Radiation

et al. 2021

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“…As various types of underground engineering projects continue to develop deeper, the geothermal gradient increases, leading to significant thermodynamic effects on deep rock masses. These effects have triggered secondary disasters in many large geotechnical engineering structures, such as deep mining, deep tunnels, oil or gas drilling, geothermal resource development, and radioactive waste disposal 1 – 6 . Granite, being one of the most widely used materials in construction and civil engineering, has its physical and mechanical properties form the foundation for the stability of deep underground space structures.…”

Section: Introductionmentioning

confidence: 99%

Analysis of physical and mechanical behaviors and microscopic mineral characteristics of thermally damaged granite

Peng,

Li,

Peng

et al. 2024

Sci Rep

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Temperature’s influence on the physical and mechanical properties of rocks is a crucial concern for the rational design of deep rock engineering structures and the assurance of their long-term stability. To systematically comprehend the impact of the evolution of mineral composition and micro characteristics on the physical and mechanical behavior of thermally damaged granite, we observed the microscopic structural defects inside the rocks with a polarizing microscope and revealed the thermal damage mechanism of granite from a microscopic perspective by combining ultrasound detection and XRD phase characteristic analysis. The results show that the physical properties of the specimens changed significantly at three characteristic temperature points: 400 °C, 800 °C, and 1000 °C. Under high temperature conditions, the diffraction intensity of all minerals in granite, except for quartz, generally decreased, and stable minerals decomposed. Albite and potash feldspar decomposed to form anorthoclase, thereby reducing the structural stability of the rock material. In addition, the peak width of various minerals decreased to varying degrees with increasing temperature. The increase in mineral volume further damaged the internal structure of the rock material while promoting the transformation from grain boundary to intergranular cracks and from intragranular cracks to transgranular cracks, ultimately forming a interconnected crack network. Thermal damage significantly reduced the longitudinal wave velocity, uniaxial compressive strength, and elastic modulus of the specimens, while the stress–strain curve relationship indicated that the specimens underwent two opposite processes of transformation from brittleness to ductility and then from ductility to brittleness. The thermal damage threshold of granite in this study was 600 °C.

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“…The interest in studying those types of building material arises from their high chemical durability, weathering resistance, low hydraulic conductivity and relatively high hardness beside their natural availability. Clays have less resistance to chemical and environmental factors compared to other shielding materials, and are more available in Egypt [19,20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Photon Radiation Attenuation Capability of Different Clay Materials

et al. 2021

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This work aims to experimentally report the radiation attenuation factors for four different clays (red, ball, kaolin and bentonite clays) at four selected energies (emitted from Am-241, Cs-137, and Co-60). The highest relative difference in the mass attenuation coefficient (MAC) is equal to −3.02%, but most of the other results are much smaller than this value, proving that the experimental and theoretical data greatly agree with each other. From the MAC results, the shielding abilities of the clay samples at 0.060 MeV follow the order of: bentonite > red > ball > kaolin. Thus, at low energies, the bentonite clay sample provides the most effective attenuation capability out of the tested clays. The half value layer (HVL) increases as energy increases, which suggests that, only a thin clay sample is needed to sufficiently absorb the radiation at low energies, while at higher energies a thicker sample is needed to shield the same amount of high energy radiated. Furthermore, bentonite clay has the lowest HVL, while the kaolin clay has the greatest HVL at all energies. The radiation protection efficiency (RPE) values at 0.060 MeV are equal to 97.982%, 97.137%, 94.242%, and 93.583% for bentonite clay, red clay, ball clay, and kaolin clay, respectively. This reveals that at this energy, the four clay samples can absorb almost all of the incoming photons, but the bentonite clay has the greatest attenuation capability at this energy, while kaolin clay has the lowest.

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Experimental investigation of the uniaxial compressive behavior of thin building granite

Cited by 15 publications

References 48 publications

The Potentials of Egyptian and Indian Granites for Protection of Ionizing Radiation

The Potentials of Egyptian and Indian Granites for Protection of Ionizing Radiation

Analysis of physical and mechanical behaviors and microscopic mineral characteristics of thermally damaged granite

Investigation of Photon Radiation Attenuation Capability of Different Clay Materials

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