利用福建铅锌尾矿制备C30预拌混凝土的试验研究  

Preparation of high performance concrete using lead-zinc tailings

作　　者：仇夏杰 李德忠 刘风华 倪文[2,3] 耿碧瑶 王佳佳 

机构地区：[1]中节能工程技术研究院有限公司,北京100044 [2]北京科技大学土木与资源工程学院,北京100083 [3]工业典型污染物资源化处理北京市重点实验室,北京100083

出　　处：《混凝土》2017年第9期120-124,共5页Concrete

摘　　要：研究铅锌尾矿代替预拌混凝土各掺合料制备C30混凝土的可能性。通过粉磨细度试验和胶砂试验确定铅锌尾矿粉的最佳掺入粒径,并将最佳粒径的铅锌尾矿粉分别代替预拌混凝土中的水泥、粉煤灰、矿渣粉来制备C30混凝土,对其制品的性能进行检测。结果表明,用铅锌尾矿粉代替预拌混凝土中的水泥、粉煤灰、矿渣粉所配制的混凝土制品性能均可达到C30泵送混凝土要求,并且仍具备优良的耐久性。通过XRD、SEM等手段进行初步分析表明由于磨细的铅锌尾矿粉粒径60%以上小于5μm,代替预拌混凝土中常用的掺合料后具有更好的微集料效应,并且体系发生了一定的火山灰反应。The possibility of lead-zinc tailings instead of admixture in ready-mixed concrete to prepare C30 ready-mixed concrete was discussed.Through the grinding？tests and the cement mortar tests to determine the optimal particle size of lead-zinc tailings while mixed it in admixture instead of cement, fly ash, slag powder to prepare C30 ready-mixed concrete, then detected the performance of the products. The results showed that： The products can reach the requirements of ready-mixed concrete,and have excellent durability.The XRD spectrum and the SEM photograph indicated that more than 60% lead-zinc railings particle size was less than 5um, so the ready-mixed concrete had better micro-aggregate effect, and pozzolanic reaction occurred in the system.

关 键 词：铅锌尾矿 粉磨试验 胶砂试验 预拌混凝土 微集料效应 

分 类 号：TU528.01[建筑科学—建筑技术科学]