Curtain Grouting Effectivity Analysis On Foundation Rocks In Blocks 37 – 40 In The Body Of Randugunting Dam, Blora Regency, Central JavaDian Agus Widiarso, Tieties Firman and Jenian MarinE3S Web Conf., 448 (2023) 03039DOI: https://doi.org/10.1051/e3sconf/202344803039