Rotational and Penetration Rate Effects on the Formation and Axial Capacity of Pressure-Grouted Helical PilesQiang Wang, Fu Yang, Shuai Fang, Yucun Yang, Wei Zhang and Jinlong ZhangE3S Web Conf., 728 (2026) 02001DOI: https://doi.org/10.1051/e3sconf/202672802001