Study on the Performance of Grouting Material for Shilangtan Cliff Carving Group

In this study, the rock powder, inorganic mineral polymer and low alkali sulphoaluminate cement were selected to design the ratio of A, B and C grouting materials for the dangerous rock mass of Shilangtan cliff carving group. The undisturbed rock, pure grouting material and the combination of original rock and grouting material were prepared, and the wave velocity, shear and tensile strength under 3d, 7d, 14d and 28d curing ages were tested. The results show that the mechanical indexes of each sample increase first fast and then slow with the increase of curing age, and tend to be stable after 28 days. The performance of the original rock-grouting material combination is significantly improved compared with the original rock. The ratio of A and B is suitable for large crack repair. The ratio of A has better shear performance, and the ratio of B has better tensile performance, less polymer dosage and higher cost performance. The research provides experimental basis for the grouting repair of the stone carving group, and also provides theoretical support for the selection of stone cultural relics repair materials.