脱硫粉煤灰二灰碎石基层废料试验研究

针对如东县东二环路二灰基层发生病害的情况,对发生工后病害的二灰碎石基层废料进行硫含量、剩余膨胀量试验,对不同硫含量条件下二灰安定性等试验检测,并对水玻璃和水泥+水玻璃处治后的二灰碎石(含脱硫灰)进行体积安定性和无侧限抗压强度试验,结果表明高含硫量是病害发生的主要原因,采用水玻璃对现场二灰碎石基层废料进行处治具有很好的处治效果。

Experimental Study on Waste Material of Desulphurization Fly Ash Lime-fly-ash Macadam Basecourse

Based on disease of lime-fly-ash basecourse of East Second Ring Road of Rudong County,sulphur content and remaining swelling capacity tests are performed for waste material of lime-fly-ash macadam basecourse caused by disease after construction,test and inspection for stability of lime-fly-ash under the condition of different sulphur contents are performed,and soundness and unconfined compression strength tests are performed for lime-fly-ash macadam(including desulfuration ash) after treatment of water glass and cement plus water glass.The results show that high sulphur content is the major reason for disease,and treatment of water glass has good effect on waste material of lime-fly-ash macadam basecourse.