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Concrete sensor with multi-intelligence characteristic and preparation method thereof

A concrete and sensor technology, applied in the direction of instruments, scientific instruments, analytical materials, etc., can solve the problems of decreased perception performance, single performance sensor, single monitoring performance, etc., and achieve the effect of excellent performance, universal improvement, and high sensitivity perception performance

Active Publication Date: 2021-01-26
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0007] In order to overcome the lack of single monitoring performance of intelligent concrete in the prior art, and the applicable load range is only the elastic range of its matrix, the present invention provides a concrete sensor with multi-intelligence characteristics and its preparation method. Three-dimensional carbon nanomaterials, ultra-high molecular weight polyethylene fibers and steel fibers solve the problem that smart concrete only acts as a single performance sensor and the decline in perceived performance after the load exceeds its own elastic range or cracks, and can stably monitor the structure. Changes in temperature, humidity, and load conditions

Method used

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  • Concrete sensor with multi-intelligence characteristic and preparation method thereof
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  • Concrete sensor with multi-intelligence characteristic and preparation method thereof

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Embodiment 1

[0042] The concrete sensor with composite intelligent characteristics described in this implementation includes cement, nano-silica, slag, three-dimensional carbon nanomaterial aqueous dispersion, water reducing agent, defoaming agent, steel fiber, ultra-high molecular weight polyethylene fiber, Sand and conductive electrodes. The quality of each group of products is shown in Table 1:

[0043] Table 1 Mix ratio of smart concrete

[0044]

[0045] The preparation method of the intelligent concrete with compound perception characteristics described in this embodiment is as follows:

[0046] (1) Add the dispersant into water and stir evenly, then add three-dimensional carbon nanomaterials to stir and moisten, then place the aqueous solution in an ice-water bath, put it in an ultrasonic processor with a frequency of 20KHz and a power of 750w, and use an ultrasonic power of 80%, open and close cycle parameters of 3s and 6s respectively, after ultrasonic treatment for 20 minute...

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Abstract

A concrete sensor with a multi-intelligence characteristic comprises the following components in percentage by weight: cement to nano silicon dioxide to slag to sand to water reducing agent to defoaming agent to three-dimensional carbon nano material aqueous dispersion liquid =1:(0.05-0.12):(0.1-0.2):(0.8-1.2):(0.02-0.03):(0.001-0.004):(0.240-0.284), the volume content of steel fibers is 1.0-2.0%,and the volume content is 0.5-1.5%. The invention further provides a preparation method of the concrete sensor with the multi-intelligence characteristic. The problems that intelligent concrete onlyserves as a single performance sensor, and the sensing performance is reduced after the load exceeds the elastic range of the intelligent concrete or the intelligent concrete cracks are solved, and meanwhile the temperature, humidity and load state change of the structure can be stably monitored.

Description

technical field [0001] The invention relates to the field of advanced cement-based composite materials, in particular to a concrete sensor with multi-intelligence characteristics and a preparation method thereof. Background technique [0002] To date, most infrastructure in service is constructed of concrete. However, due to the durability issues of concrete materials and the interaction between concrete materials and their environment, the functional degradation of concrete materials occurs. Due to the lack of suitable monitoring means, timely maintenance has not been carried out, resulting in a large number of concrete structures being in a state of damage, and even causing structural damage. Therefore, the importance of structural damage assessment and health monitoring is highlighted. [0003] Most of the traditional methods of structural health monitoring are real-time monitoring by pre-embedded sensors in the structure or regular monitoring by a series of detection m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04C04B28/04
CPCG01N27/041G01N27/048C04B28/04C04B2201/50C04B2111/00844C04B14/062C04B18/141C04B14/48C04B16/0625C04B14/06C04B14/026C04B14/022C04B2103/50C04B2103/302C04B2103/40
Inventor 刘金涛黄存旺杨杨顾春平倪彤元
Owner ZHEJIANG UNIV OF TECH
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