The main objective of the current research is to study the dynamic behaviour of colloidal silica treated grout. The treatment of foundation soil with colloidal silica improves the cyclic strength of the soil, which has the potential to reduce damages in buildings during earthquakes. Cyclic triaxial tests were conducted at various double amplitudes to understand the cyclic resistance of the colloidal silica grouted sand. The test results of untreated samples at different relative densities were compared with the treated samples having the same relative densities. The present study revealed that the optimum percentage of colloidal silica decreases with an increase in relative density. The grout inside the treated area would undergo geothermal and water table changes. Wetting and drying cycles were studied to understand the durability of the above-mentioned grout. The samples sustained 18 wetting and drying cycles which in turn proves its superior durability characteristics. It was observed that the confining pressure, total energy capacity, as well as brittleness index and colloidal silica percentages, are some factors determining strength characteristics. Furthermore, the addition of colloidal silica in sand improves the cyclic resistance strength, damping ratio, and the shear modulus.

当前研究的主要目的是研究胶态二氧化硅处理的灌浆的动力学行为。用胶态二氧化硅处理基础土壤可提高土壤的循环强度，有可能减少地震期间建筑物的破坏。在各种双振幅下进行了循环三轴测试，以了解胶体二氧化硅灌浆砂的循环阻力。将具有不同相对密度的未处理样品的测试结果与具有相同相对密度的已处理样品进行比较。本研究表明，胶体二氧化硅的最佳百分比随相对密度的增加而降低。处理区域内的灌浆将经历地热和地下水位变化。对润湿和干燥循环进行了研究，以了解上述灌浆的耐久性。样品经过18个润湿和干燥循环，从而证明了其优异的耐久性。观察到围压，总能量容量，脆性指数和胶体二氧化硅百分比是确定强度特性的一些因素。此外，在沙子中添加胶态二氧化硅可改善循环电阻强度，阻尼比和剪切模量。