Investigating the changes in the strength of carbonate rocks exposed to microwave energy

IF 1.827 Q2 Earth and Planetary Sciences

Arabian Journal of Geosciences Pub Date : 2024-09-03 DOI:10.1007/s12517-024-12058-4

Sair Kahraman, Muhammed Ozbek, Masoud Rostami, Mustafa Fener, Andrei Andras, Florin Dumitru Popescu

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Abstract

Microwave treatment is one of the research topics to solve cutting problems of hard rocks such as low cutting rate and high tool wear. Microwave irradiation creates fractures in the rock body and decreases its strength. Numerous studies have been conducted to ascertain how microwaves affect the strength of rocks. Ten carbonate rocks are examined in this paper to see how microwaving affects their strength. First, unconfined compression and tensile strength tests were conducted on unirradiated dry and saturated core specimens. Following that, the two tests were performed again on samples that had been exposed to radiation for varying amounts of time—between 2 and 6 min—at a microwave power of 6 kW. The results showed that the uniaxial compressive strength loss due to microwave irradiation was between 9.0 and 90.0% and 7.3 and 92.0% for the dry and saturated samples, respectively. Tensile strength loss was between 15.6 and 62.7% and 23.2 and 63.1% for the dry and saturated samples, respectively. The efficiency of treating carbonate rocks with microwaves is significantly impacted by density, porosity, and impurities. Multiple regression equations were derived to estimate the strength losses. Concluding remark is that the strength reductions due to microwaves are significant for carbonate rocks.

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研究碳酸盐岩在微波能量作用下的强度变化

微波处理是解决硬岩切削问题（如切削率低和刀具磨损大）的研究课题之一。微波辐照会在岩体中产生裂缝，降低岩体强度。为确定微波如何影响岩石强度，已经进行了大量研究。本文研究了十种碳酸盐岩，以了解微波如何影响其强度。首先，对未经辐照的干燥岩芯和饱和岩芯试样进行了无约束压缩和拉伸强度测试。然后，在微波功率为 6 千瓦的情况下，对经过不同时间（2 至 6 分钟）辐照的样本再次进行这两项测试。结果表明，对于干燥和饱和样品，微波辐照造成的单轴抗压强度损失分别在 9.0% 到 90.0% 之间和 7.3% 到 92.0% 之间。干燥样本和饱和样本的拉伸强度损失分别为 15.6% 至 62.7%，23.2% 至 63.1%。用微波处理碳酸盐岩的效率受密度、孔隙率和杂质的影响很大。得出了多元回归方程来估算强度损失。结论是，微波对碳酸盐岩的强度影响很大。

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来源期刊

Arabian Journal of Geosciences GEOSCIENCES, MULTIDISCIPLINARY-

自引率

0.00%

发文量

1587

审稿时长

6.7 months

期刊介绍： The Arabian Journal of Geosciences is the official journal of the Saudi Society for Geosciences and publishes peer-reviewed original and review articles on the entire range of Earth Science themes, focused on, but not limited to, those that have regional significance to the Middle East and the Euro-Mediterranean Zone. Key topics therefore include; geology, hydrogeology, earth system science, petroleum sciences, geophysics, seismology and crustal structures, tectonics, sedimentology, palaeontology, metamorphic and igneous petrology, natural hazards, environmental sciences and sustainable development, geoarchaeology, geomorphology, paleo-environment studies, oceanography, atmospheric sciences, GIS and remote sensing, geodesy, mineralogy, volcanology, geochemistry and metallogenesis.