Seite - 1179 - in Book of Full Papers - Symposium Hydro Engineering

To validate the SPUC technology, an in-situ test was conducted in Tanjiang bridge, Guangdong Province, China. A pit was digged and paved with plastic sheet with color bands, as shown in Fig. 3. Then water filled and UPA was poured into the water. Concrete had been poured until the pit filled with SPUC. After concrete harden, the difference of elevation between the cast point and 5 m away is only 60 mm. The average compress strength of drill cores is 36.8 MPa, where design compress strength is only 25 MPa. The bottom concrete of the piers in this huge bridge was decided to pour by using SPUC technology. Fig. 2 Flowchart of SPUC casting Fig. 3 In-situ test of SPUC in Tanjiang bridge (a) commencement of pouring (b) process of pouring (c) pouring finished (d) drill cores after harden 5m 60mm Pouring point Dilution of UPA UPA casting point set UPA cast UPA cast-speed control SPUC casting prepare SPUC cast END 1179