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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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城市污泥为部分原料制备黏土烧结普通砖
Abstract:
用城市污泥为部分原料制备了黏土烧结普通砖。结果表明随着污泥掺量增加,成型砖坯密实度下降;在焙烧过程,污泥中重金属熔融固化,有机物挥发,所形成的气孔和孔洞降低了砖体抗压强度及热导率。制备生坯时的最优含水率为19%～21%,经105℃干燥,960℃焙烧,所生产的黏土砖体质量较好。综合考虑制砖各工艺环节,建议将污泥掺量控制在5%(质量分数)以内,5%污泥制备黏土烧结普通砖的抗压强度达15.0MPa以上,可作为承重砖体使用,并可提高隔热保温性能。
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