Acoustic Emission Detection of Graphene Oxide Concrete
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摘要: 制备了不同氧化石墨烯掺量的6组边长为100 mm的C30立方体混凝土试块，通过单轴抗压声发射试验来研究不同掺量的氧化石墨烯对混凝土力学性能和声发射参数（幅值、振铃计数、频率）的影响规律。结果表明：随着氧化石墨烯掺量的增加，混凝土各个龄期的抗压强度依次增大，混凝土的破坏形态整体性较好，混凝土的声发射频率范围逐渐加宽，混凝土的优势频率越来越大，并可根据声发射振铃计数率将混凝土的破坏阶段划分为5个阶段。Abstract: Six groups of C30 concrete cubes made of different dosage of graphene oxide were cast. The size of the cubes are all of 100 mm×100 mm×100mm. The uniaxial compressive test was carried out to study the effect of different dosage of graphene oxide on concrete mechanics performance and on acoustic emission parameters (amplitude, ringing counting, frequency). The results show that with the increase of the content of graphene oxide, the compressive strength of the concrete was increased at all ages, the destruction pattern of concrete was getting better, the acoustic emission was increasing, and the destruction stage of concrete was divided into five stages according to the ringing count rate.
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Keywords:
- graphene oxide /
- acoustic emission /
- compressive strength /
- frequency
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[1] 任亮,梁明元,王凯.桥梁伸缩缝超高性能混凝土关键性能的研究与应用[J].硅酸盐通报,2018,37(6):2048-2052. [2] 穆建忠.原材料的低价位不代表混凝土的低成本——浅谈混凝土原材料的价格与混凝土最终成本之间的关系[J].商品混凝土,2017(12):8-9. [3] 崔鑫有. 氧化石墨烯对水泥粉煤灰体系的性能影响及作用机理研究[D].北京:北京建筑大学,2018. [4] CHUASH S, LI W, CHEN S J. Investigation on dispersion of graphene oxide in cement composite using different surfactant treatments[J]. Construction and Building Materials, 2018,161,519-527.
[5] 刘春燕. 氧化石墨烯水泥基材料性能及其应用研究[D].西安:西安建筑科技大学,2017. [6] NOVOSELOV K S, GEIM A K, MROZOV S V. Electric field effect in atomically thin carbon films[J].Science,2004,306:666-669.
[7] STANKOVICH S, DIKIN D, RUOFFR S. Graphene-based composite material[J]. Nature, 2006, 442:282-286.
[8] INKYU R, YOONG A K.Compressive strength sensitivity of cement mortar using rice husk-derived graphene with a high specific surface area[J]. Construction and Building Materials,2015,96:189-197.
[9] LI W J, LI X Y, CHEN S J. Effects of graphene oxide on early-age hydration and electrical resistivity of Portland cement paste[J]. Construction and Building Materials, 2017,136:506-514.
[10] GEETHA S, SELVAKUMAR M. Graphene oxide admixed aerated concrete composite with carbon fibres[J]. Proceedings, 2018, 5:19808-19814.
[11] 王辉,刘爱红,李航.石墨烯纳米片对水泥基复合材料力学性能的影响[J].混凝土与水泥制品,2015(12):25-27. [12] 吕生华,马宇娟,邱超超,等.氧化石墨烯对水泥水化晶体形貌的调控作用及对力学性能的影响[J].功能材料,2013,44(10):1487-1492. [13] 杜涛.氧化石墨烯水泥基复合材料性能研究[D].哈尔滨:哈尔滨工业大学,2014. [14] 王健. 氧化石墨烯对水泥的性能影响及作用机理研究[D].北京:北京建筑大学,2017. [15] 饶春华. 氧化石墨烯水泥基再生混凝土材料主要力学性能试验与分析[D].南昌:南昌大学,2016. [16] 赖于树,熊燕,程龙飞.混凝土受载试验全过程声发射特性研究与应用[J].建筑材料学报,2015,18(3):380-386.
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