为探讨镍粉复合水泥基材料的压敏性,首先研究了一次加载至破坏时不同掺量镍粉复合水泥基材料的电阻率变化规律,然后通过在弹性阶段的加载考察掺量为25%(体积分数,下同)的镍粉复合水泥基材料压敏性的重现性,最后研究了加载速率和试件偏压对掺量25%的镍粉复合水泥基材料压敏性的影响.结果表明:掺量15%和20%的镍粉复合水泥基材料不具有压敏性.掺量25%的镍粉复合水泥基材料一次加载至破坏,电阻率变化率最大可达40%,弹性阶段电阻率变化率可达35%以上,具有良好的压敏性;且其压敏性基本不受加载速率和试件偏压的影响.镍粉是制备具有高感知灵敏度的压敏水泥基材料的一种有效功能组分.
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