TY - JOUR
AU1 - Wang, Yanqi
AU2 - Sun, Quansheng
AU3 - Liu, Yancheng
AU4 - Rim, Chol
AU5 - Kim, Changsop
AB - The frequent damage and repair of bridge expansion joint anchorage zone has caused a great burden to the bridge maintenance work. The objective of this study is to prepare a steel fiber reinforced polyurethane concrete (SFPUC) with balanced multi-properties of workability, compressive strength, and flexural strength for the application in bridge expansion joint anchorage zone. A four-factor, five-level orthogonal experimental design was carried out to investigate the effects of the binder-aggregate ratio (BA), cement content (C), fine-coarse aggregate ratio (FC), and steel fiber dosing (SF) on the workability, compressive strength, and flexural strength, respectively. The multi-criteria decision-making (MCDM) method was used to transform the multi-response problem in the orthogonal experimental design into a single-response problem. Finally, a real engineering application and a finite element method were used to verify the feasibility of SFPUC for the expansion joint anchorage zone. The results show that the optimum proportion of SFPUC is BA (25%), C (20%), FC (20%), and SF (2.5%). The maximum principal stress in SFPUC anchorage zone is less than that in C50 steel fiber concrete anchorage zone under the same load. SFPUC is a highly promising material for bridge expansion joint anchorage zone repair.
TI - Preparation of polyurethane concrete and its novel application in bridge expansion joint anchorage zone
JF - Journal of Reinforced Plastics and Composites
DO - 10.1177/07316844231206920
DA - 2024-12-01
UR - https://www.deepdyve.com/lp/sage/preparation-of-polyurethane-concrete-and-its-novel-application-in-Buxpcm56eB
SP - 1356
EP - 1374
VL - 43
IS - 23-24
DP - DeepDyve
ER -