Civil and Environmental Engineering Department, Ecole des Mines de Douai, 941 rue Charles Boursul, BP 10838, 59508 Douai Cedex, France.
Environ Technol. 2012 Jan-Feb;33(1-3):95-101. doi: 10.1080/09593330.2011.551840.
Cement/lime-based solidification is an environmentally sound solution for the management of dredged marine sediments, instead of traditional solutions such as immersion. Based on the mineralogical composition and physical characteristics of Dunkirk sediments, the effects of cement and lime are assessed through Atterberg limits, modified Proctor compaction, unconfined compressive strength and indirect tensile strength tests. The variation of Atterberg limits and the improvement in strength are discussed at different binder contents. The potential of sediments solidified with cement or lime for road construction is evaluated through a proposed methodology from two aspects: I-CBR value and material classification. The test results show the feasibility of solidified dredged sediments for beneficial use as a material in road construction. Cement is superior to lime in terms of strength improvement, and adding 6% cement is an economic and reasonable method to stabilize fine sediments.
水泥/石灰基固化是一种环境友好的疏浚海洋沉积物管理方法，而不是传统的浸没法。基于敦刻尔克沉积物的矿物成分和物理特性，通过界限含水率、改良 Proctor 压实度、无侧限抗压强度和间接拉伸强度试验评估了水泥和石灰的作用。讨论了不同胶结料含量下界限含水率的变化和强度的提高。通过提出的方法从两个方面评估了用水泥或石灰固化的沉积物用于道路建设的潜力：I-CBR 值和材料分类。试验结果表明，固化疏浚沉积物作为道路建筑材料具有可行性。在强度提高方面，水泥优于石灰，添加 6%的水泥是稳定细沉积物的一种经济合理的方法。
