为了对淤泥和建筑垃圾进行处置，实现二者的共同资源化利用，在室内和现场分别对淤泥进行固化试验。将建筑垃圾作为骨料按淤泥质量比的15%添加到淤泥中，再向淤泥中加入淤泥固化剂，通过机械搅拌的方式将淤泥与建筑垃圾、固化剂混合均匀，然后对固化土进行养护。室内试验结果表明，当固化剂掺量为8%时，固化淤泥土强度较高，养护28 d后，室内无侧限抗压强度可达320 kPa；在现场试验中，静力触探试验和平板荷载试验表明，固化剂对淤泥的固化效果明显。将低剂量固化剂添加到淤泥中，固化淤泥土强度较低，骨料的架构作用不明显；当固化剂掺量为8%时，固化土的强度较高，骨料的架构作用有利于提升固化淤泥土的承载力，土体的承载力特征值可达325 kPa，架构作用对固化淤泥土强度的提升率为71.05%，可实现淤泥和建筑垃圾的同步资源化利用。

To dispose of sludge and construction waste and facilitate their common resource utilization, the solidification tests of sludge are carried out in the laboratory and in site. In the field test, the construction waste is used as aggregate and added to the sludge by 15% of the mass ratio of the sludge, and then the sludge solidified agent is added to the sludge. Sludge, construction waste and solidified agent are mixed evenly by mechanical stirring, and finally the solidified soil is cured. The laboratory test results show that when the content of solidified agent is 8%, the strength of solidified sludge is quite high, and the laboratory UCS of solidified sludge can reach 320 kPa after curing for 28 days. The cone penetration test and plate loading test in field show that the solidified agent has an obvious solidifying effect on sludge. With low dose solidified agent, the structure effect of aggregate is not obvious. When the content of solidified agent is 8%, the structure effect of aggregate is beneficial in improving the bearing capacity of solidified sludge and the characteristic soil bearing capacity can reach 325 kPa. The improvement rate of solidified sludge by structure effect is 71.05%, which facilitates the common resource utilization of silt and construction waste.

TU447

温州市基础性科研项目（S2020024）