对灌筑水下混凝土有重要影响的是水,在水下灌筑混凝土时,水可能把水泥和砂冲走或与混凝土会加大了水灰比。以前,用导管法灌筑水下混凝土是认为混凝土从管底流出,将已有混凝土向外向上挤出,以为仅仅最初灌筑的 Water has an important effect on the filling of underwater concrete. When underwater concrete is poured, the water may wash away the cement and sand or increase the water-cement ratio with the concrete. In the past, the use of conduit method of filling underwater concrete was considered that the concrete flowed out of the bottom of the pipe, and the existing concrete was extruded outwards so that only the initial filling