生活垃圾焚烧炉渣水稳定性试验研究

以福州红庙岭生活垃圾焚烧炉渣为试验对象,测试不同吸水时间和干湿循环次数下炉渣试件无侧限抗压强度和CBR的变化规律,揭示炉渣填料在水作用下的强度变化特征。结果表明:炉渣试件无侧限抗压强度和CBR随吸水时间和干湿循环次数的增加而增大,具有良好的水稳定性。炉渣的强度主要依靠水泥熟料和活性物质化学反应产生水化产物形成的,这使得炉渣在潮湿路基的回填、管槽周边的回填具有显著优势。

Experimental Study on Water Stability of MSWI Bottom Ash

The variation of the unconfined compressive strength UCS and the California bearing ratio CBR of MSWI bottom ash samples with different water absorption time and dry-wet circle number were tested by taking MSWI bottom ash in Hongmiaoling Fuzhou as the test object.The strength change characteristics of MSWI bottom ash under water action were revealed.The results show that the UCS and CBR of MSWI bottom ash increased with the increase of water absorption time and dry-wet circle number and it has good water stability of MSWI bottom ash.The strength formation of MSWI bottom ash depends on the hydration products produced by the chemical reaction of cement clinker and active substance which makes the backfilling of MSWI bottom ash in damp subgrade and around pipe channel have significant advantages.