| Through hundreds of years, ancient seawall along Qiantang River still plays a role of defending against tide. Now, the remaining40Km of ancient seawall appears different kinds of damage, it is urgent to do research on the remaining ancient seawall and protect it.In this paper, take advantage of scientific methods, I focus on the study of sticky rice-lime mortar used in the ancient seawall. By experimental method and numerical method, the main study of this paper can be generalized as follows:(1) Taking field mortar sampling from Haining section, Using iodine-starch reaction experiments TG-DSC experiment、XRD、FT-IR、EDX to analysis chemical composition of the mortar sampling. And also, taking advantage of Scanning Electron Microscopy(SEM), I analyze microstructure of mortar sampling and pure lime mortar and explain characteristics of sticky rice-lime mortar from micro perspective.(2) An experimental study is performed to produce a suitable mortar and make into samples of compression test. Simulating three different conditions of sticky rice-lime mortar:airing curings dry-wet circulation curing and salty water curing. Through experiment, getting compression strength and provide theoretical basis for reproduce and application of mortar.(3) Designing pressure shear test for interface of sticky rice-lime mortar, this method has characteristics of stability, easy to loading and easy to analysis. Load transfers through interface of mortar as a form of shear and eliminate influence of bending moment. In pressure shear test, I take influence of salty water into consideration.(4) Setting strain-stress curve of interface of sticky rice-lime mortar from pressure shear test as interface property in ABAQUS, based on cohesive zone model, establishing finite element model of seawall body and analyzing stress and strain distribution of the seawall under different engineering conditions. |
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