水泥-生石灰固化吹填土无侧限抗压强度试验研究

为了改善滨海吹填淤泥的物理力学性能,同时考虑工程经济性和大面积推广,通过添加低配比的水泥和生石灰来提高吹填土的强度,为实际工程的应用提供依据。本文采用单一水泥或生石灰以及双掺固化的方式,通过大量的室内试验,得到了7天、14天和28天的无侧限抗压强度值,分别分析了水泥、生石灰以及双掺的掺量和养护龄期对固化土的无侧限抗压强度的影响,揭示了固化土的无侧限抗压强度与掺量之间的线性关系,明确了低配比下固化土的无侧限抗压强度与龄期的关系。此外,还探讨了水泥土和石灰土的强度增长差异。

Experimental Study on Unconfined Compressive Strength of Hydraulic Fill Consolidated by Adding Cement and Lime

In order to improve the physical considering the engineering cement and lime solidified to economics and and mechanical properties of the coastal hydraulic fill, large-scale extension, by adding low proportion of the improve the strength of hydraulic fill, as the basis for practical engineering application, through a large number of laboratory tests, this paper takes single cement , single lime and double mixed with cement and lime as curing agent, obtained the unconfined compressive strength values of 7 days, 14 and 28 days of different mixing rations of curing agent, and analyzed the influence of the compressive strength on the mix amount and the curing age, a simple linear relation that the compressive strength of stabilized soil of the mix amount is given, and made clear that the relationship between the unconfined compressive strength of the low proportion of solidified soil and the curing ages. Moreover, the growth difference of compressive strength about cement-stabilized soil and lime-stabilized soil are discussed.