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Strength Characteristics of Reef Limestone for Different Cementation

The mechanical properties and damage behavior of coral limestone collected from the Zhongsha Islands, South China Sea were investigated based on the results of uniaxial compression tests.

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Influence of Water Saturation Time on Microstructure …

Influence of Water Saturation Time on Microstructure and Mechanical Properties of Jointed Limestone Huigui Li1*, Jun Wang1,2*, Xiaohe Wang2, Wanliang Liang2, Guosheng Xu1 and Yingchun Kang3 1College of Mining Engineering, Guizhou University of Engineering Science, Bijie, China, 2School of Energy and Mining, China University of Mining and Technology, …

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Mechanical behavior of Benxi Formation limestone …

Uniaxial compression tests on Guiting limestone with different crack lengths were conducted under different loadings (Aliha et al. 2012;Akbardoostetal.2014). Test results showed that fracture resistance was related to the specimen size and loading conditions of the rock specimens. Triaxial tests on the limestone were also performed, and the

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china limestone compression test in Oman

Analysis of triaxial compression deformation and strength — Limestone from Xuzhou, Jiangsu, China, was selected as the test material. This limestone is gray in its natural state and mainly composed of calcite, dolomite, illite, etc. The limestone has a uniform overall texture and has an average density of 2.71–2.73 g/cm 3.

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Study on Dynamic Mechanical Properties of Limestone …

limestone samples are shown in Tables and, respectively. e static uniaxial compression test of limestone com-pletes in the RMT-C system as shown in Figure ... e SHPB Impact Compression Test Apparatus and Cal-culation Principle. elarge diameter SHPB device (mm) is adopted in this experiment, which is jointly developed by

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Static and dynamic compressive performance of coral reef limestone …

Static uniaxial and dynamic split Hopkinson pressure bar (SHPB) compression tests are conducted to obtain the strengths at very low and medium to high compressive strain rates, respectively.

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Dynamic compressive properties and self-similarity …

In this paper, the Split Hopkinson Pressure Bar tests were carried out on the specimens of deep coral reef limestone in the South China Sea, ... For deep CRL in Fig. 1b, Meng et al. (2024) conducted dynamic compression tests, demonstrating the impact of pore structure on its dynamic stress-strain and dissipation energy responses. Noting that ...

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Study on Dynamic Mechanical Properties of Limestone under …

Dynamic compressive properties and failure modes of limestone under different impact pressure are investigated. In addition, energy dissipation is studied in the process of …

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Test and Models of the Mechanical Properties of Limestone …

With the Permian limestone in Chongqing Wulong area as research object, the relations among yield strength, rock peak intensity, residual strength and confining pressure were studied through triaxial test.

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Analysis of compression failure and acoustic emission …

SONG Zhanping, CHENG Yun, YANG Tengtian, et al. Analysis of compression failure and acoustic emission characteristics of limestone under permeability-stress coupling[J]. Journal of …

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Effects of bedding plane dip angle and lithology on the

To investigate the mechanical and micro-failure behavior of stratified rock, a series of uniaxial compression and CT scanning tests of stratified limestone and sandstone at different bedding plane dip angles (α) were conducted. The experimental results showed that with the increasing α, uniaxial compressive strength (UCS), peak strain (ε1p), Poisson's ratio (μ) of …

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Study on Dynamic Mechanical Properties of Limestone …

Dynamic compressive properties and failure modes of limestone under diferent impact pressure are investigated. In addition, energy dissipation is studied in the process of experiment. The …

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Tests on dynamic properties of coral-reef limestone in South China …

Biogenic coral-reef limestone is distinct from the traditional geological rock. In this study, Hopkinson pressure bar tests on coral-reef limestone are conducted to investigate the dynamic ...

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Characteristic Point of the Relatively Quiet Period for Limestone

Abstract. In view of the precursory characteristic point of limestone failure under uniaxial compression, the underlying mechanisms are not sufficiently clear. Experimental studies examining the acoustic emission (AE) characteristics of the complete limestone failure process have been carried out under uniaxial compression. The experimental results, including …

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Modification and Application of Limestone HJC Constitutive …

Limestone is the main rock used for geotechnical engineering for its quality in the southwest of China. The study of the dynamic characteristics of limestone under impact loads is highly important for high-speed impact and accurate rock breaking as well as geotechnical engineering disaster prevention and mitigation. ... the triaxial compression ...

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Failure properties of rocks in true triaxial unloading compressive test

Trans. Nonferrous Met. Soc. China 25(2015) 571âˆ'581 Failure properties of rocks in true triaxial unloading compressive test Kun DU 1, Xi-bing LI 2, Di-yuan LI 2, Lei WENG 2 1. ... the standard uniaxial compression test was carried out on two rocks and the uniaxial compressive strengths of granite and red sandstone are 139.0 MPa and 57. ...

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Fatigue Characteristics of Limestone under Triaxial Compression …

Deviatoric stress-strain curves from the triaxial compression tests of the limestone samples with a single loading rate (0.003 mm/s). ... China. Correspondence should be addressed to Huiqiang Duan ...

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Fatigue Characteristics of Limestone under Triaxial Compression …

Deviatoric stress-strain curves from the triaxial compression tests of the limestone samples with a single loading rate (0.003 mm/s). 3.2. Cyclic Loading Tests ... This research was supported by the National Natural Science Foundation of China (Grant nos. 51379116 and 51574156), Tai'shan Scholar Talent Team Support Plan for Advantaged and ...

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Strain field investigation of limestone specimen under …

Using the colorful video images and experimental data from the laboratory uniaxial compression test of a limestone, XU et al [5] obtained the displacement field using a digital image correlation …

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Experimental Study on Damage Behavior of Porous Coral Limestone …

The damage characteristics of coral limestone are of great significance for guiding the design and construction of offshore engineering such as submarine tunnels and pipelines. The mechanical properties and damage behavior of coral limestone collected from the Zhongsha Islands, South China Sea were investigated based on the results of uniaxial compression tests. …

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Energy analysis of limestone during triaxial compression …

Tests on dynamic properties of coral-reef limestone in South China Sea [J]. Rock and Soil Mechanics, 2019, 40(1): 183-190. [10] PENG Shou-jian, WANG Zhe, XU Jiang, OKUBO Seisuke, TANG Yang, . Experimental study on loading rate effect in post-failure region of water-saturated rock under triaxial compression [J]. Rock and Soil Mechanics, 2018, 39 ...

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Mechanical Properties and Acoustic Emission Characteristics …

1. Introduction. China has the most widely distributed karst area in the world. The distribution area of soluble rock in China is mainly located in the southwest, total area is about 3,400,000 km 2 (Figure 1), among which the exposed carbonate area reaches 910,000 km 2 [1, 2].The development of Western China is an important strategy for China's economic …

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Investigation of damage characteristics of coral reef limestone …

This study analyzed uniaxial compression behavior and pore structural characteristics of four types of CRL using the uniaxial compression test and computerized tomography (CT) scanning test. The influence mechanism of CRL's physical properties on its uniaxial compression characteristics was revealed from a microscopic perspective.

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Crack Initiation and Damage Evolution of Micritized Framework Reef

The mechanical properties and damage behavior of coral limestone collected from the Zhongsha Islands, South China Sea were investigated based on the results of uniaxial compression tests.

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Experimental Study on Damage Behavior of Porous Coral Limestone …

The mechanical properties and damage behavior of coral limestone collected from the Zhongsha Islands, South China Sea were investigated based on the results of uniaxial compression tests.

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Investigation of damage characteristics of coral reef limestone …

The variation of the biological source and diagenetic environment results in significant differences in pore structure and mechanical properties of coral reef limestone (CRL) with various structures. This study analyzed uniaxial compression behavior and pore structural characteristics of four types of CRL using the uniaxial compression test and computerized …

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Experimental Investigation of the Static and Dynamic …

These above investigations have provided insights into the compression static and dynamic characteristics of limestone with different initial levels of damage. Hence, in this paper a series of compression tests were conducted on block type limestone by employing a large-scale rock multi-function shear device subjected to 2 110 4 s strain rates ...

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Effects of bedding plane dip angle and lithology on the …

To investigate the mechanical and micro-failure behavior of stratified rock, a series of uniaxial compression and CT scanning tests of stratified limestone and sandstone at different bedding plane ...

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Effect of hydro-chemical corrosion on mechanical properties …

The THMC multifield coupling triaxial compression test equipment was used to conduct the compression tests, as shown in Fig. 2 a. The measuring system consisted of a pair of LVDTs (linear variable displacement sensors) used to measure the axial displacement and a chain radial extensometer used to measure the radial displacement ( Fig. 2 b).

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4. Fractal Characteristics of Limestone Fragments

Under both the uniaxial stress state and the confining pressure of 10 MPa, the number of limestone specimen fragments generated in the cyclic loading test is greater than that generated in the conventional compression test; and the mass fraction of the fragments in the former test is obviously greater than that in the latter test when the ...