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Piezoresistive effect concrete with high sensitivity and preparation method thereof
The invention provides piezoresistive effect concrete with high sensitivity. The piezoresistive effect concrete is prepared by taking carbon fibers, steel fibers, multi-walled carbon nanotubes and graphene nanosheets as functional fillers, and a conductive network is perfected through co-doping of a plurality of functional fillers, so that the piezoresistive response sensitivity is improved. Basedon 100 parts by weight of Portland cement, the piezoresistive effect concrete with high sensitivity further comprises 0.6-1.8 parts of carbon fibers, 2-6 parts of steel fibers, 0.25-1 part of multi-walled carbon nanotubes and 0-0.05 part of graphene nanosheets. By changing the mixing amount of the filler, a series of piezoresistive effect concrete materials are provided, and the resistivity change rate is not less than 4% under the load effect of at least 16 MPa. The resistivity change rate can be kept stable and repeatable at the loading rate of 5, 10, 20 and 30 KN/min.
本发明提供了具有高灵敏度的压‑阻效应混凝土，所述压‑阻效应混凝土以碳纤维、钢纤维、多壁碳纳米管、石墨烯纳米片为功能填料进行制备，通过多种功能填料的复掺，完善了导电网络，从而提高压‑阻响应灵敏度。以硅酸盐水泥的重量为100份计，所述具有高灵敏度的压‑阻效应混凝土，还包含碳纤维0.6‑1.8份、钢纤维2‑6份、多壁碳纳米管0.25‑1份、石墨烯纳米片0‑0.05份。通过改变填料的掺量，提供了一系列压‑阻效应混凝土材料，至少在16MPa荷载作用下电阻率变化率不少于4%。在5、10、20、30KN/min的加载速率下电阻率变化率能保持稳定性与重复性。
Piezoresistive effect concrete with high sensitivity and preparation method thereof
The invention provides piezoresistive effect concrete with high sensitivity. The piezoresistive effect concrete is prepared by taking carbon fibers, steel fibers, multi-walled carbon nanotubes and graphene nanosheets as functional fillers, and a conductive network is perfected through co-doping of a plurality of functional fillers, so that the piezoresistive response sensitivity is improved. Basedon 100 parts by weight of Portland cement, the piezoresistive effect concrete with high sensitivity further comprises 0.6-1.8 parts of carbon fibers, 2-6 parts of steel fibers, 0.25-1 part of multi-walled carbon nanotubes and 0-0.05 part of graphene nanosheets. By changing the mixing amount of the filler, a series of piezoresistive effect concrete materials are provided, and the resistivity change rate is not less than 4% under the load effect of at least 16 MPa. The resistivity change rate can be kept stable and repeatable at the loading rate of 5, 10, 20 and 30 KN/min.
本发明提供了具有高灵敏度的压‑阻效应混凝土，所述压‑阻效应混凝土以碳纤维、钢纤维、多壁碳纳米管、石墨烯纳米片为功能填料进行制备，通过多种功能填料的复掺，完善了导电网络，从而提高压‑阻响应灵敏度。以硅酸盐水泥的重量为100份计，所述具有高灵敏度的压‑阻效应混凝土，还包含碳纤维0.6‑1.8份、钢纤维2‑6份、多壁碳纳米管0.25‑1份、石墨烯纳米片0‑0.05份。通过改变填料的掺量，提供了一系列压‑阻效应混凝土材料，至少在16MPa荷载作用下电阻率变化率不少于4%。在5、10、20、30KN/min的加载速率下电阻率变化率能保持稳定性与重复性。
Piezoresistive effect concrete with high sensitivity and preparation method thereof
一种具有高灵敏度的压-阻效应混凝土及制备方法
SUN YAFEI (author) / ZHOU TIANSHU (author) / WU FAHONG (author) / PENG YUEYUE (author) / LIU HONGWEI (author) / LI JUN (author)
2020-12-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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