- 孫 威，陳 佳，閻 石，孫 麗，黃友強
引用本文摘 要：提出一種基于壓電智能骨料的混凝土強度監測方法。將壓電智能骨料傳感器成對埋置于混凝土梁內部，對28d內各目標齡期進行信號監測試驗與立方體強度抗壓試驗。試驗結果表明，智能骨料監測信號能量值隨齡期的衰減與混凝土強度隨齡期的增加基本同步，說明智能骨料監測信號能量的變化趨勢能很好地揭示強度發展趨勢，可用于混凝土結構強度監測。對試驗數據作進一步處理得到監測信號能量比與混凝土強度百分比，二者呈良好的線性關系。 Abstract: A new method to monitoring strength of concrete based on piezoelectric smart aggregate was proposed in the paper. The piezoelectric smart aggregates were embedded in the concrete beams in pairs. Signal energy monitoring test and compressive strength test were conducted in each target age within 28d. The test results show that the attenuation of monitoring signals collected by smart aggregates synchronize the increasing of concrete strength. It proves that the variation tendency of monitoring signals can reveal the development tendency of concrete strength. The method proposed in the paper could be used to monitor the increase of concrete strength. And the energy ratio of monitoring signals and strength percentage of concrete were got by processing signals further. Excellent linearity between the energy ratio and strength percentage is achieved.