Research on naturally cemented soils (e.g. sandstones) has increased considerably in recent years, mainly due to the growing interest in finding new offshore oil wells at depths that can sometimes exceed 1000 m. Although testing using undisturbed samples is ideal, the extraction, transport and preservation of such samples is incredibly difficult and sometimes unfeasible. Therefore, in order to study the natural cementation of these materials, triaxial compression tests were performed on an artificially cemented sand cured at effective stress of 500, 2000 and 4000 kPa and then compared with samples cured under atmospheric pressure and then sheared at the same effective stresses. Samples with different dosages were studied. Results showed that the type of curing does not present statistical influence on the peak strength values. On the other hand, the type of curing, together with the effective stress at the beginning of the shearing and the sample dosage control both the maximum stiffness values at very small strains as well as the stiffness degradation with strain. Simple mathematical models have been successfully adjusted to standardized results.

近年来，对天然胶结土壤（例如砂岩）的研究已大大增加，这主要是由于人们对寻找有时可能超过1000 m深度的新海上油井的兴趣日益浓厚。尽管使用不受干扰的样本进行测试是理想的方法，但此类样本的提取，运输和保存非常困难，有时甚至是不可行的。因此，为了研究这些材料的自然胶结作用，对在500、2000和4000 kPa有效应力下固化的人工胶结砂进行了三轴压缩试验，然后与在大气压下固化并在相同有效剪切力下进行剪切的样品进行了比较。压力。研究了不同剂量的样品。结果表明，固化类型对峰强度值没有统计学影响。另一方面，固化的类型，剪切开始时的有效应力和样品剂量既可以控制非常小的应变时的最大刚度值，也可以控制因应变而导致的刚度降低。简单的数学模型已成功调整为标准化结果。