Pressure-sensitive cement-base composite material
A technology for cement-based materials and composite materials, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of being greatly affected by humidity, low sensitivity of force-electric coupling effect, and matrix polarization easily affecting electricity Signal test and other problems, to achieve the effect of low humidity and high sensitivity
Inactive Publication Date: 2008-02-13
HARBIN INST OF TECH
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Problems solved by technology
[0004] The purpose of the present invention is to provide a pressure-sensitive cement-based composite material in order to solve the defects of the existing pressure-sensitive cemen
Method used
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specific Embodiment approach 1
[0009] Embodiment 1: The pressure-sensitive cement-based composite material of this embodiment is composed of a functional component and a cement-based material, the functional component is nickel powder, and the cement-based material is a cementitious material or a composite material of a cementitious material and aggregate; The functional components account for 1-80% of the total weight, and the rest are cement-based materials.
specific Embodiment approach 2
[0010] Embodiment 2: This embodiment differs from Embodiment 1 in that the functional components account for 40-70% of the total weight. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0011] Embodiment 3: This embodiment differs from Embodiment 1 in that the functional components account for 55% of the total weight. Others are the same as in the first embodiment.
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Abstract
The present invention discloses a pressed cement composite material, which relates to a cement composite material; the present invention is to solve the shortcoming in the existing pressed cement material that: the sense ability for the force-electricity coupling effect is much lower, the existing method is influenced by the humidity greatly, and the base polarization is easy to influence the test of the electricity signal. The present invention consists of a function component and cement material; the function component is a nickel powder or a mixture between the nickel powder and one or more than one material including carbon cellulose, carbon, graphite and steel residual; the cement material is a glue material or a composite material between the glue material and the bone material; thereinto, the function component occupies between 1 percent and 80 percent in the total weight; and the rested is the cement material. The sense ability of the pressed cement composite material in the present invention is much higher; the sensitivity can reach to more than hundred or thousand, which is higher than the sensitivity of the existing pressed cement composite material with the function component including carbon cellulose, carbon and steel residual and so on. Besides, the force-electricity coupling effect for the material is much smaller by the humidity; the test of the electricity signal is not easy to be influenced by the base polarization.
Description
technical field [0001] The invention relates to a cement-based composite material. Background technique [0002] In 1989, Professor D.D.L.Chung of the United States discovered that after traditional cement-based materials were mixed with chopped carbon fibers, the volume resistance of the carbon fiber cement-based composites produced would change regularly under the action of force field or temperature field, so carbon fiber Cement-based materials can perceive their own stress, strain, damage and temperature through changes in resistivity, that is, they have force-electricity coupling effects and thermo-electricity coupling effects (force-electricity coupling effects and thermo-electricity coupling effects are collectively referred to as sensitivity) . Through the research, it is also found that the combination of functional components (one or several kinds of carbon black, steel slag and nano particles) and cement-based materials also has the mechanical-electrical coupling...
Claims
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Patent Timeline
Login to view more IPC IPC(8): C04B28/00C04B22/04
CPCC04B2111/90C04B28/02Y02W30/91C04B14/022C04B14/024C04B18/142C04B20/0048C04B22/04C04B14/047C04B14/06C04B18/08C04B18/146C04B18/02C04B14/02C04B20/0076
Inventor 欧进萍韩宝国韩宝忠张灵燕
Owner HARBIN INST OF TECH
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