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使用机器学习和电机阻抗与纳米增强传感器的组合预测早期的混凝土强度

Huang Ju1, Lin Xing2, Alaa Hussein Ali3

  • 1School of Mechanical Engineering, Chongqing Technology and Business University, Chongqing, 400067, China.

Environmental research
|June 1, 2024
PubMed
概括

实时混凝土强度监测对于结构完整性至关重要. 使用纳米增强传感器和人工智能的新混合方法准确地估计了混凝土强度的发展,提高了建筑安全.

关键词:
人工神经网络 (ANN) 是一个人工神经网络.机电阻抗是电机械阻抗的长时间的短期记忆 (LSTM)编号法 编号法 编号法 编号法非破坏性测试 (NDT) 技术压电传感器是一种电压传感器.智能纳米智能纳米智能纳米

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The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
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Non-destructive Tests for Concrete Strength

The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
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Elasticity in Concrete

Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...
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Fatigue Strength of Concrete01:22

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Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
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