Experimental study on seismic performance of rammed earth walls reinforced with basalt fibers
The rammed earth wall dwelling is characterized by its convenience in material sourcing,low cost,thermal regulation and eco-friendliness.However,the unique properties of the materials result in poor durability and seismic resistance.In order to enhance the seismic performance of rammed earth walls,five rammed earth wall samples with varying ratios and lengths of basalt fibers were designed and subjected to quasi-static tests to investigate their failure modes,failure processes,failure mechanisms,hysteresis curves,skeleton curves,ductility and energy dissipation under the combined action of horizontal force and vertical load.The results showed that compared to the plain rammed earth wall,the addition of basalt fibers delayed the time to cracking and increased the cracking load with a maximum difference of 28.56%.The ultimate bearing capacity increased by 3.34%-16.05%and the ultimate displacement increased by 9.34%-51.32%.The results suggest that basalt fibers can effectively improve the durability and seismic resistance of rammed earth walls.
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