Introduction The construction of offshore wind turbine foundations in the South China Sea faces exorbitant material transportation costs. While locally sourced coral aggregate concrete (CAC) offers an effective in-situ solution, the high water absorption of coral aggregates negatively impacts mechanical properties and durability. This study aims to develop a high-performance steel slag–silica fume composite coral concrete (SSC...

Traditional ultrasonic bolt stress measurement is hindered by high power consumption. Lowering excitation voltage reduces power but degrades signal-to-noise ratio (SNR), compromising accuracy. This paper proposes a synergistic algorithm combining Empirical Mode Decomposition (EMD) with Adaptive Threshold Wavelet Denoising (ATWD). The method preserves transient features by reconstructing high-frequency components via EMD, then...