研究了掺入少量纳米石墨烯片（GnPs）的水泥基复合材料的力学性能、电学性能和压敏性，结果表明，GnPs的掺入显著提高了水泥砂浆的早龄期抗压强度，但对后期抗压强度的影响不大。GnPs 表面积较大，将阻塞离子移动通路，故少量GnPs（体积掺量低于01．5％）对改善水泥砂浆导电性的作用效果不明显。GnPs水泥基复合材料能感知应力、应变，GnPs的掺入提高了其灵敏度和重复性。
In this paper ,effects of small amount (0‐0 1.5vol% )of graphene nanoplatelets (GnPs) on the mechan‐ical properties ,electrical properties and piezoresistivity of cementitious composites was investigated .Results show that the early (7 d) compression strength of cement‐based composites increases greatly with increase in the GnPs content ,while little variation in the 28 d strength is observed .The resistivity of cement‐based com‐posites changes little with the GnPs content increasing .This may be due to the large surface of GnPs can block the course for ionic transport .Cement‐based composites with GnPs can sense strain and stress .The addition of GnPs can improve the sensitivity and repetability .
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