瓦希德·奥耶罗拉·巴洛贡,奥卢瓦森·奥拉通吉·奥图诺拉

山药皮是山药加工供人类食用时产生的废物。本研究考察了以山药皮灰（YPA）代替水泥的混凝土的结构强度特性。YPA经过火山灰度和设置时间测试，以确定其作为火山灰的潜力。采用0.6的水灰比生产1：2：4、1：3：6、1：4：8混合混凝土，其中水泥部分被YPA替代，按水泥重量计为5%、10%、15%和20%。共有64个尺寸为50×50×50mm的混凝土立方体被成型并固化了7、14、21和28天。而36根尺寸为50×50×150mm的混凝土梁被模塑和固化了7天和28天。进行了加工性、抗压强度和弯曲试验。结果表明，水/水泥比足以使混合混凝土具有可操作性。在5%YPA替代水泥时，混合混凝土的第28天抗压强度为最佳，混合混凝土的抗压强度为1：3：6，值为9.857N/mm2，约为不替代水泥的混凝土强度的64%。在混合比为1：2：4的混合比下，在5%YPA替代下观察到混凝土的最佳抗弯强度，值为5.112N/mm2，约为混凝土强度的97%，不更换水泥。结果表明，水泥%YPA置换的增加对混合混凝土试样密度没有显著影响。

山药皮灰；水泥；抗压强度；抗弯强度；混凝土

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