固化疏浚淤泥做堤防填筑材料的试验研究

固化疏浚淤泥作为堤防填筑材料，既解决淤泥的处置，又可解决堤防建设中填土的缺乏。用灰渣胶凝材料（HAS）固化淤泥并测试固化淤泥土的主要物理力学性质，发现掺6 %灰渣胶凝材料固化后的淤泥土，在自然堆积28 d后的液塑限达到60 %，有机质含量降低到2 %，淤泥由原来的有机质高液限黏土（CHO）变成高液限粉质黏土（MH），其28 d的无侧限抗压强度普遍大于1.4 MPa，凝聚力c≥100 kPa，内摩擦角?＞35°，渗透系数小于10-6 cm/s，远高于提防填筑材料的标准，表明灰渣胶凝材料固化改性淤泥成为堤防填土是可行的。

Experimental research on stabilized dredged silt used as embankment filling materials

The stabilized dredged silt is used as embankment filling materials, which can not only solve the disposition of silt, but also solve lack of filling materials in the embankment construction. Silt is stabilized by ash-slag cementitious materials (HAS); and some physico-mechanical characters of stabilized silt are measured. Result shows that the liquid limit of silt added 6 % HAS accounts 60 % and organic matter reduce to 2 % after stacked 28 days, and silt is changed into MH from CHO in soil classification. Those mechanical characters such as, the 28 days unconfined compressive strength of stabilized silt reach 1.4 MPa; and cohesion c≥ 100 kPa; friction angles ?＞35°; permeability coefficient is less than 10-6 cm/s; which outclass the standard of embankment filling materials. All those show that it is feasible to use stabilized silt with HAS as embankment filling materials.