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首页> 外文期刊>Journal of Materials Research >Concrete reinforced with irradiated nylon fibers
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Concrete reinforced with irradiated nylon fibers

机译：辐照尼龙纤维增强的混凝土

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Polymeric fibers have been used since the 1980s for improvement of the concrete. However, hi-h mechanical performance has been obtained at high cost and using complex technologies. At least two parameters are important here: dimensions and surface characteristics of the fibers. We have modified nylon 6,12 fiber surfaces by 5. 10, 50, and 100 kGy gamma irradiation dosages. Tensile strength of the irradiated fibers was determined and then the fibers mixed at 1.5%, 2.0%, and 2.5% in volume with Portland cement, gravel, sand, and water. The compressive strength of the fiber reinforced concrete (FRC) was evaluated and the results were compared with results for similar materials reported before. The highest values of the compressive strength of FRC are seen for fibers at 50 kGy and 2.0% in volume of fiber: the strength is 122.2 MPa, as compared to 35 MPa for simple concrete without fibers. We advance a mechanism by which the fiber structure can be affected by gamma irradiation resulting in the compressive strength improvement of the concrete.
机译：自1980年代以来，一直在使用聚合物纤维来改善混凝土。然而，已经以高成本和使用复杂技术获得了高机械性能。这里至少有两个参数很重要：纤维的尺寸和表面特性。我们已经通过5、10、50和100 kGyγ辐射剂量对尼龙6,12纤维表面进行了改性。确定辐照纤维的拉伸强度，然后将纤维以1.5％，2.0％和2.5％的体积与波特兰水泥，砾石，沙子和水混合。评估了纤维增强混凝土（FRC）的抗压强度，并将结果与​​以前报道的类似材料的结果进行了比较。在50 kGy和纤维体积的2.0％时，纤维的FRC抗压强度最高：强度为122.2 MPa，而不含纤维的简单混凝土为35 MPa。我们提出了一种机制，通过该机制，伽玛射线可以影响纤维结构，从而提高混凝土的抗压强度。

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