Effects of the freeze–thaw (F–T) cycle on the andesitic rocks (Sille-Konya/Turkey) used in construction building

Fener, Mustafa; İnce, İsmail

doi:10.1016/j.jafrearsci.2015.05.006

Cited by 91 publications

(25 citation statements)

References 32 publications

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“…When the temperature falls below the freezing point, water in the discontinuities and fractures of the rock increases stresses on the surface of these fractures and result in an increase in volume. Repeating this process causes degradation of materials [32,33]. An automatic freezing-thawing machine, Wuhan, China was used in this study.…”

Section: Frost Attack Processmentioning

confidence: 99%

Predicting Unconfined Compressive Strength Decrease of Carbonate Building Materials against Frost Attack Using Nondestructive Physical Tests

2020

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Carbonate building materials and engineering constructions are exposed to severe seasonal environmental fluctuations and result in a full or partial disintegration, especially in cold regions, and employment of nondestructive methods for evaluating the durability of building materials subject to frost weathering is gaining great significance. This research aims to obtain reliable relationships between unconfined compressive strength decrease and nondestructive parameters variations of limestone types under frost conditions and provide useful information regarding their durability in order to ensure the long-term viability or sustainability of these materials used for constructions against frost conditions. In this study, five important types of Chinese limestone used as construction materials were subjected to 50 frost cycles. Unconfined compressive strength, compressional wave velocity and spatial attenuation, and porosity were obtained at the end of every 10 cycles. As a result of progression in frost cycles, the increase and decrease rates were determined at the end of every 10 cycles, and the relationships between them were obtained to predict the loss ratios of unconfined compressive strength (RDσc). Results indicated that at the end of 40th cycles, there was a high correlation between RDσc and spatial attenuation loss with an R2 of 0.8584. Furthermore, there was also a strong relationship between RDσc and compressional wave velocity decrease after the end of 20th and 50th cycles with an R2 of 0.9089 and 0.9025, respectively. Therefore, these relations are reliable to provide useful information for durability and viability of studied samples under frost conditions and support the use of the ultrasonic measurements. It can also be successfully used for pre-estimation of unconfined compressive strength loss of studied limestone types against frost weathering without any tests.

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Section: Frost Attack Processmentioning

confidence: 99%

Predicting Unconfined Compressive Strength Decrease of Carbonate Building Materials against Frost Attack Using Nondestructive Physical Tests

2020

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“…e change in mechanical behavior is caused by the rock pore structure deterioration under F-T conditions. In previous works, some attempts have been made to investigate the degradation and fracture behavior of F-T treated rocks [9][10][11][12][13][14][15][16]. However, most of the previous reports mainly focused on the static mechanical research [17,18]; and only a few studies on coupled dynamic mechanical deterioration and fracture behavior have been reported.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Dynamic Fracture Mechanism and Energy Evolution of Saturated Yellow Sandstone under Different Freeze‐Thaw Temperatures

Chen

Mao

Yang

et al. 2019

Advances in Civil Engineering

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The coupling effect of freeze-thaw (F-T) temperature and dynamic load on the dynamic mechanical properties and fracture mechanism of saturated yellow sandstone was experimentally investigated in this research. The dynamic compression tests on the specimen after different F-T temperatures (i.e., −5°С, −10°С, −15°С, −20°С, −30°С, and 20°С) have been carried out with split-Hopkinson pressure bar (SHPB) setup under eight F-T cycle numbers. The density and P-wave velocity of the specimens were obtained before and after the F-T tests. After the F-T tests, the specimen microstructures were examined via the scanning electron microscope (SEM). The dynamic fracture process was visualized by the high-speed camera. The particle size distribution and fragment shapes of the specimens were analyzed using a classifying screen. In addition, the energy dissipation law of specimens during the impact test was also discussed. Experimental results show that the dynamic elastic modulus, strength of the specimen, and the average particle size decrease with decreasing F-T temperature. SEM results reveal that low F-T temperature leads to severer internal damage of the specimen by inducing freeze-swell holes, interconnected cracks, and pore clusters. In addition, the fragmentation shapes of the failed specimens exhibit double-cone failure, single-side slope failure, double-side slope failure, and split failure. The energy dissipation increases gradually with increasing F-T temperature. This study helps to prevent geological disasters and optimize engineering design in cold regions.

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“…When the water-saturated rock is under freeze-thaw conditions, the water connects microcracks and generates expansion [11] in the rock, which aggravates the development of these cracks. e development of these cracks is mainly manifested in the following aspects: on the one hand, the size of these cracks is further increased [12]; on the other hand, the crack tip continues to extend; meanwhile, in the local cracks, adjacent cracks close due to expansion of ice, while the size of cracks without water filling shrinks [13]. In addition, freezing and thawing will also have an impact on the water polymer.…”

Section: Introductionmentioning

confidence: 99%

Freeze‐Thaw Cycle Effect on Sputtering Rate of Water‐Saturated Yellow Sandstone under Impact Loading

Duan

Xian

et al. 2019

Advances in Civil Engineering

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In order to explore the impact of freeze-thaw temperature on the sputtering rate of water-saturated yellow sandstone under impact loading, in this paper, the Hopkinson pressure bar is used to conduct impact loading test on the water-saturated yellow sandstone at the same strain rate (74.22 s−1) under five different freeze-thaw temperatures. After impact loading, the yellow sandstone fragments are graded and screened by using the sizing screen, and the mass of fragments with different particle sizes after screening is counted. By transforming the fragments into spheres with the corresponding particle sizes, and combining the dissipated energy, the surface specific energy of yellow sandstone with different freeze-thaw temperatures is calculated. Finally, the sputtering rate of the fragments is obtained by using the relationship of total work, dissipated energy, and kinetic energy. The main conclusions are as follows: The freeze-thaw temperature has a significant effect on the fracture degree of yellow sandstone. The lower the freeze-thaw temperature is, the higher the fracture degree of yellow sandstone is, and the smaller the particle size distribution of fragments is. The fractal dimension of yellow sandstone increases with the decrease of freeze-thaw temperature, indicating that the damage of yellow sandstone is more serious. The dissipative energy of yellow sandstone increases with the decrease of freezing temperature, while the kinetic energy increases gradually when the freeze-thaw temperature is −30°C to −15°C and decreases gradually when the freeze-thaw temperature is −15°C to −5°C. The surface area and surface specific energy of yellow sandstone fragments both increase with the increase of freeze-thaw temperature. And the sputtering rate of yellow sandstone fragments increases gradually at freezing temperature from −30°C to −15°C and decreases gradually at −15°C to −5°C. Therefore, from the perspective of dynamic destruction process, the sputtering of yellow sandstone fragments at freezing temperatures of −15°C, −20°C, and −30°C is more intense than that at −5°C and −10°C. The results can provide some guidance for production in winter and winter regions.

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Effects of the freeze–thaw (F–T) cycle on the andesitic rocks (Sille-Konya/Turkey) used in construction building

Cited by 91 publications

References 32 publications

Predicting Unconfined Compressive Strength Decrease of Carbonate Building Materials against Frost Attack Using Nondestructive Physical Tests

Predicting Unconfined Compressive Strength Decrease of Carbonate Building Materials against Frost Attack Using Nondestructive Physical Tests

Experimental Investigation on Dynamic Fracture Mechanism and Energy Evolution of Saturated Yellow Sandstone under Different Freeze‐Thaw Temperatures

Freeze‐Thaw Cycle Effect on Sputtering Rate of Water‐Saturated Yellow Sandstone under Impact Loading

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