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首页> 外文期刊>Journal of Materials Science >Tensile tests on plain and fibre reinforced geothermal cements
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Tensile tests on plain and fibre reinforced geothermal cements

机译：普通和纤维增强地热水泥的拉伸试验

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The tensile behaviour of different geothermal well cement formulations was investigated in order to determine how these materials perform under such loading and how tensile capacity can be improved. The influence of latex, perlite and fibres on the load-displacement relationship of the cements was measured on notched cylinders. The fracture surfaces were examined to further elucidate failure mechanisms. Unreinforced cements exhibited linear elastic behaviour to different degrees and failed in a brittle manner. Cements reinforced with either carbon (150 mum) or steel (1-3 mm) microfibres required greater loads for failure. However, the microfibres did not provide any major improvement in ductility. Addition of 13 mm steel fibres to the cements resulted in both strengthening and transition to ductile behaviour. Inclusion of the types of fibres studied in this work in cements offers potential benefits in maintaining the integrity of geothermal wells when tensile stresses are involved. (C) 2004 Kluwer Academic Publishers. [References: 17]
机译：为了确定这些材料在这种载荷下的性能以及如何提高抗拉能力，研究了不同地热井水泥配方的抗拉性能。在带缺口的圆柱体上测量了乳胶，珍珠岩和纤维对水泥的荷载-位移关系的影响。检查了断裂表面以进一步阐明失效机理。未增强的水泥表现出不同程度的线性弹性，并且以脆性方式破坏。用碳（150毫米）或钢（1-3毫米）微纤维增强的水泥需要更大的载荷才能破坏。但是，微纤维在延展性方面没有提供任何重大改善。在水泥中添加13毫米钢纤维既增强又转变为延性。在涉及张应力的情况下，将这项工作中研究的纤维类型包括在水泥中可为维护地热井的完整性提供潜在的好处。 （C）2004 Kluwer学术出版社。 [参考：17]

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