以城市污水处理厂污泥为原材料,采用热处理-机械活化工艺研制了一种火山灰质掺合料,确定了适用于该掺合料制备的方法及工艺条件,并利用XRD方法分析其对水泥基材料的增强机理.实验结果表明,城市污水污泥在800℃下烧结2.5h,快速冷却后粉磨60 min,制得了火山灰活性高的污泥焚烧灰,其可提高水泥砂浆的强度,最优掺量达20％.
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