中文摘要：

为研究湿度变化对土楼夯土强度的影响规律,从而对福建土楼的结构性能进行深入的研究,为保护土楼提供理论依据.通过模拟福建土楼当地干湿交替的气候变化特征,利用恒温恒湿箱进行试验,研究干湿循环对夯土试块的抗压强度的影响.测试了原状土、重塑土和新土三种夯土试块在干湿交替作用过程中的质量、含水率和抗压强度,系统分析试块的质量、含水率和抗压强度的变化规律与影响因素.结果表明：三种试块的质量随循环次数的增加而减少;含水率总体上随干湿循环次数的增加而下降;重塑土试块和新土试块的抗压强度随干湿循环次数的增加呈现先增大后减小的趋势.

英文摘要：

On the basis of simulating the drying and wetting climates where Fujian tulou locates,this study investigates the response of rammed earth blocks with different ages and different composition to compressive loading.It records the weights,the rates of water content and the compressive strengths of three kinds of rammed earth blocks—the undisturbed soil ones,the remolded soil ones and the new soil ones during the process of drying and wetting cycles.The reason for variation of the weights,the rates of water content and the compressive strengths during the drying and wetting cycles is analyzed,and the experimental data can be used for the deeper study of Fujian tulou and provide theory evidence for the protection of Fujian tulou.The result shows that the weights of three kinds of rammed earth blocks decrease as the drying and wetting cycles go,the rates of water content of three kinds of rammed earth blocks in general reduce during the cycles,the compressive strengths of the remolded soil blocks and the new soil blocks increase in the early cycles and then decrease after the fifth cycle.