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A new method for evaluating the rock mass damage index based on the field point load strength [PDF]
Royal Society Open Science, 2019 The damage index is a crucial controlling parameter for rock mass strength and deformation in civil, geological and mining engineering projects. In this study, a new method was proposed for computing the damage index of a rock mass based on the field ...
Lei Wen +5 more
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Research on Rock Strength Test Based on Electro-Hydraulic Servo Point Load Instrument
Applied Sciences, 2022 A new electro-hydraulic servo point load instrument was designed to address the problem that the existing point load instrument cannot be loaded continuously and uniformly; different loading rates (using three loading rates: 0.1, 0.5, 1.0 kN/s) were ...
Xiaoxia Zhou +5 more
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Assessing point load strength in irregular phyllite via an equivalent area method. [PDF]
PLoS ONEObtaining intact cylindrical cores from soft, weathered rock is frequently challenging, making the point load test a preferred technique for quickly determining rock strength.
Hong Zhang, Yong Cao, Qiang Luo, Wei Qi
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Influence of orthoclase phenocrysts on point load strength of granitic rocks
Engineering Geology, 2012 Abstract The point load index test involves loading cylindrical, block or irregular rock samples between two conical platens until sample failure. The point load strength index (Is) determined using failure load and sample dimension is widely and variously used in engineering geological studies.
M Fener, Ismail Ince
exaly +4 more sources
KSCE Journal of Civil Engineering, 2015 The point load strength (Is(50)) is an alternative mechanical parameter to predict the compressive strength of concrete. The scope of this investigation is to develop an empirical equation relating the point load strength and compressive strength of concrete.
Levent Selcuk, H Suleyman Gökçe
exaly +3 more sources
Estimation of Uniaxial Compressive Strength and Tensile Strength of Sandstone Based on Point Load
Renmin ZhujiangIn rock mechanics and engineering practice, accurate and rapid evaluation of uniaxial compressive strength and tensile strength of rock is important for engineering design and construction safety. Traditional test methods are time-consuming and laborious,
LIU Yongzhi +5 more
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Evaluation of artificial neural network, neuro-fuzzy and multivariate regression modelling for prediction of concrete compressive strength via point load test [PDF]
مجله مدل سازی در مهندسی, 2020 Nowadays, the determination of in place concrete strength is more considered. The necessity of in situ testing can be expressed in a variety of applications such as structural change or development, quality control, strength evaluation and concrete ...
meysam effati +2 more
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Buildings, 2022 Concrete is a brittle material whose tensile strength is about one-tenth of its compressive strength. Tensile strength is a key parameter for concrete under impact loading.
Jie Wang, Junlin Tao
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Shock and Vibration, 2021 The deep high prestatically loaded rock is often subjected to low-frequency dynamic disturbance and exhibits unusual strength characteristics, and thus, it is important to investigate the strength characteristics under the coupling effect of prestatic ...
Wuxing Wu, Fengqiang Gong
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工程科学学报, 2023 The frequent occurrence of core disking in boreholes under high in-situ stress in deep rock engineering leads to the difficulty in intact core sampling on sites.
Di-yuan LI +4 more
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