A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Insight into the Crushing Strength of Rockfill Grains at Different Temperature and Relative Humidity Conditions
https://orcid.org/0000-0002-5038-9427
Abstract The degradation of rockfill materials in certain surrounding environments is directly related to the deformation of many important geotechnical structures. This study aims to systematically reveal the effects of temperature and relative humidity on the crushing strength of rockfill materials at the particle scale. To this end, a series of single-particle crushing tests with controlled temperatures and relative humidities were carried out on rockfill grains. A crushing strength model, by combining an analytical solution and the Weibull statistics, was then proposed to predict the particle size and the environmental factors on the characteristic crushing strength of rockfill grains. The effects of temperature and relative humidity on the crushing strength were captured in the analytical solution by establishing the corresponding relationship between intensity criterion and energy criterion based on the fracture mechanics of idealized brittle solids. The Weibull statistics was adopted in the model to consider the influence of the random defects on the scale effect of crushing strength. The performance of the proposed model was verified by the experimentally obtained relationship between the characteristic strength and the average particle size at different temperature and relative humidity conditions. The result of this study provides a grain-scale insight into the water weakening or thermal weakening behavior of rockfill materials, as well as a quantitatively approach to consider the effects of particle scale and environmental factors in constitutive modeling of rockfill materials.
Highlights The test results for the single-particle crushing strength of rockfill materials, considering the effects of temperature, relative humidity, and particle size, are provided.The effects of temperature and relative humidity on the single-particle crushing strength of rockfill grains are captured in an analytical solution based on the fracture mechanics of idealized brittle solids.A crushing strength model for single rockfill grains considering the combined effects of particle size, temperature and relative humidity is obtained by analogy between the Weibull statistics and the analytical solution.
Insight into the Crushing Strength of Rockfill Grains at Different Temperature and Relative Humidity Conditions
https://orcid.org/0000-0002-5038-9427
Abstract The degradation of rockfill materials in certain surrounding environments is directly related to the deformation of many important geotechnical structures. This study aims to systematically reveal the effects of temperature and relative humidity on the crushing strength of rockfill materials at the particle scale. To this end, a series of single-particle crushing tests with controlled temperatures and relative humidities were carried out on rockfill grains. A crushing strength model, by combining an analytical solution and the Weibull statistics, was then proposed to predict the particle size and the environmental factors on the characteristic crushing strength of rockfill grains. The effects of temperature and relative humidity on the crushing strength were captured in the analytical solution by establishing the corresponding relationship between intensity criterion and energy criterion based on the fracture mechanics of idealized brittle solids. The Weibull statistics was adopted in the model to consider the influence of the random defects on the scale effect of crushing strength. The performance of the proposed model was verified by the experimentally obtained relationship between the characteristic strength and the average particle size at different temperature and relative humidity conditions. The result of this study provides a grain-scale insight into the water weakening or thermal weakening behavior of rockfill materials, as well as a quantitatively approach to consider the effects of particle scale and environmental factors in constitutive modeling of rockfill materials.
Highlights The test results for the single-particle crushing strength of rockfill materials, considering the effects of temperature, relative humidity, and particle size, are provided.The effects of temperature and relative humidity on the single-particle crushing strength of rockfill grains are captured in an analytical solution based on the fracture mechanics of idealized brittle solids.A crushing strength model for single rockfill grains considering the combined effects of particle size, temperature and relative humidity is obtained by analogy between the Weibull statistics and the analytical solution.
Insight into the Crushing Strength of Rockfill Grains at Different Temperature and Relative Humidity Conditions
https://orcid.org/0000-0002-5038-9427
Abstract The degradation of rockfill materials in certain surrounding environments is directly related to the deformation of many important geotechnical structures. This study aims to systematically reveal the effects of temperature and relative humidity on the crushing strength of rockfill materials at the particle scale. To this end, a series of single-particle crushing tests with controlled temperatures and relative humidities were carried out on rockfill grains. A crushing strength model, by combining an analytical solution and the Weibull statistics, was then proposed to predict the particle size and the environmental factors on the characteristic crushing strength of rockfill grains. The effects of temperature and relative humidity on the crushing strength were captured in the analytical solution by establishing the corresponding relationship between intensity criterion and energy criterion based on the fracture mechanics of idealized brittle solids. The Weibull statistics was adopted in the model to consider the influence of the random defects on the scale effect of crushing strength. The performance of the proposed model was verified by the experimentally obtained relationship between the characteristic strength and the average particle size at different temperature and relative humidity conditions. The result of this study provides a grain-scale insight into the water weakening or thermal weakening behavior of rockfill materials, as well as a quantitatively approach to consider the effects of particle scale and environmental factors in constitutive modeling of rockfill materials.
Highlights The test results for the single-particle crushing strength of rockfill materials, considering the effects of temperature, relative humidity, and particle size, are provided.The effects of temperature and relative humidity on the single-particle crushing strength of rockfill grains are captured in an analytical solution based on the fracture mechanics of idealized brittle solids.A crushing strength model for single rockfill grains considering the combined effects of particle size, temperature and relative humidity is obtained by analogy between the Weibull statistics and the analytical solution.
Insight into the Crushing Strength of Rockfill Grains at Different Temperature and Relative Humidity Conditions
Mao, Hangyu (author) / Shen, Chaomin (author) / Liu, Sihong (author) / Wang, Liujiang (author) / Fu, Zhongzhi (author)
2023
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
Single-particle crushing strength under different relative humidity conditions
| Springer Verlag | 2021
Testing Rockfill Under Relative Humidity Control
| Online Contents | 2004
Testing Rockfill Under Relative Humidity Control
| Online Contents | 2004
Testing Rockfill Under Relative Humidity Control
| British Library Online Contents | 2004