Abstract
Abstract The water permeability of concrete is a crucial indicator to evaluate its ability to resist the infiltration of water or other liquids under pressure, which is vital for ensuring the stability and durability of building structures. The flange-type apparatuses are commonly used for detecting concrete’s impermeability and determining its impermeability rating. This article proposes a novel calibration method specifically designed for the flange-type apparatus to measure the water permeability of concrete, according to which the standard pressure measuring device is connected to the calibrated apparatus by a connection device designed and presented in this article in order to ensure sealing performance and operational safety during the experiment. Additionally, a host computer software is presented in this article for data recording and analysis to realize real-time recording and saving of experimental data, as well as generating pressure curves. The flange-type apparatus is calibrated mainly through the measurement of two metrological parameters, which are indication error and set pressure retention error. Experimental verification has confirmed that this method can simultaneously calibrate both parameters, which can significantly improve the accuracy and efficiency of on-site calibration of flange-type apparatus to measure the water permeability of concrete.
Published Version
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