铅锌尾矿砂对不同强度等级混凝土影响分析
|
摘要
用川西北某铅锌尾矿砂部分替代天然砂配制不同强度等级混凝土,分别测试了不同替代率C25～C40混凝土3 d、7 d、14 d、28 d的抗压强度。结果表明,不同替代率的混合砂混凝土抗压强度随时间的增长规律同普通混凝土增长一致;对于四种不同强度等级的混合砂混凝土,28 d抗压强度值随替代率的增加先增大后减小且都大于天然砂混凝土,抗压强度增长率最大是替代率为50%的C20混凝土,增长率达到48.1%。通过试验验证,该矿铅锌尾矿砂可作为建筑材料使用。
The different strength grade concrete with a lead-zinc tailings sand from northwest Sichuan is prepared by the partial substitution of lead-zinc tailings sand, and the compressive strength values of 3 d, 7 d, 14 d and 28 d of C25～C40 different strength gradesconcrete with lead-zinc tailings sand were tested respectively. The results show that the increasing laws of compressive strength of lead-zinc tailings sand concrete with different substitution rate is consistent with that of ordinary concrete. For four different strength grade mixed sand concrete, with the substitution rate increases, the 28 d compressive strength value increases first and then decreases, and all are larger than that of the natural sand concrete, the biggest increase in compressive strength is C20 concrete with a replacement rate of 50%, and the growth rate is 48.1%. The Experimental verification results show that lead-zinc tailings sand can be used as building materials.
The different strength grade concrete with a lead-zinc tailings sand from northwest Sichuan is prepared by the partial substitution of lead-zinc tailings sand, and the compressive strength values of 3 d, 7 d, 14 d and 28 d of C25～C40 different strength gradesconcrete with lead-zinc tailings sand were tested respectively. The results show that the increasing laws of compressive strength of lead-zinc tailings sand concrete with different substitution rate is consistent with that of ordinary concrete. For four different strength grade mixed sand concrete, with the substitution rate increases, the 28 d compressive strength value increases first and then decreases, and all are larger than that of the natural sand concrete, the biggest increase in compressive strength is C20 concrete with a replacement rate of 50%, and the growth rate is 48.1%. The Experimental verification results show that lead-zinc tailings sand can be used as building materials.
引文
[1]刘世昌.极细颗粒钼尾矿制备高强混凝土的研究[D].邯郸:河北工程大学,2017.
[2]张越.苍山铁矿尾矿砂制备蒸压加气混凝土砌块的研究[D].西安:西安建筑科技大学,2017.
[3]陈旭峰,徐景会,赵营.铁尾矿在预拌混凝土产业化应用的技术开发[J].混凝土,2014,294(4):112-118.
[4]夏荣华,朱申红,李秋义,等.矿业尾矿在建材中的应用前景[J].青岛理工大学学报,2007,28(3):76-80.
[5]蔡基伟,封孝信,赵丽,等.铁尾矿砂混凝土的泌水特性[J].武汉理工大学学报,2009,31(7):88-91.
[6]郑永超,倪文,张旭芳,等.用细粒铁尾矿制备细骨料混凝土的试验研究[J].金属矿山,2009,402(12):151-153.
[7]董常斌,栾晓风.尾矿砂和石粉砂砂在C40超高层泵送混凝土中的应用[J].四川水泥,2015(9):127.
[8]B·A·钱图利亚,李长根,崔洪山.俄罗斯选矿目前存在的问题[J].国外金属矿选矿,2006,06(04):14-19.
[9]李周,汪秀石.铁尾矿砂自密实混凝土力学性能研究[J].低温建筑技术,2012,13(9):13-15.
[10]LI X,BOND P L,HUANG L.Diversity of As Metabolism Functional Genes in Pb-Zn Mine Tailings[J].Pedosphere,2017,27(3):630-637.
[11]郭钖智,李维仁,郑传平,等.铅锌矿超细尾矿砂的综合利用[J].硅酸盐建筑制品,1992,94(3):24-27.
[12]朱佳文,邹冬生,向言词,等.钝化剂对铅锌尾矿砂中重金属的固化作用[J].农业环境科学学报,2012,31(5):920-925.
[13]Hassan K E,Cabrera J G,Maliehe R S.The effect of mineral admixtures on the properties of high-performance co ncrete[J].Cement and Concrete Composites,2000,22(4):267-271.
[14]田景松.铁尾矿砂混凝土的配制与应用研究[D].北京:清华大学,2010.
[15]王冬卫,康洪震,刘平.铁尾矿砂混凝土立方体抗压强度与轴心抗压强度的关系[J].河北联合大学学报:自然科学版,2013,35(3):102-105.
[2]张越.苍山铁矿尾矿砂制备蒸压加气混凝土砌块的研究[D].西安:西安建筑科技大学,2017.
[3]陈旭峰,徐景会,赵营.铁尾矿在预拌混凝土产业化应用的技术开发[J].混凝土,2014,294(4):112-118.
[4]夏荣华,朱申红,李秋义,等.矿业尾矿在建材中的应用前景[J].青岛理工大学学报,2007,28(3):76-80.
[5]蔡基伟,封孝信,赵丽,等.铁尾矿砂混凝土的泌水特性[J].武汉理工大学学报,2009,31(7):88-91.
[6]郑永超,倪文,张旭芳,等.用细粒铁尾矿制备细骨料混凝土的试验研究[J].金属矿山,2009,402(12):151-153.
[7]董常斌,栾晓风.尾矿砂和石粉砂砂在C40超高层泵送混凝土中的应用[J].四川水泥,2015(9):127.
[8]B·A·钱图利亚,李长根,崔洪山.俄罗斯选矿目前存在的问题[J].国外金属矿选矿,2006,06(04):14-19.
[9]李周,汪秀石.铁尾矿砂自密实混凝土力学性能研究[J].低温建筑技术,2012,13(9):13-15.
[10]LI X,BOND P L,HUANG L.Diversity of As Metabolism Functional Genes in Pb-Zn Mine Tailings[J].Pedosphere,2017,27(3):630-637.
[11]郭钖智,李维仁,郑传平,等.铅锌矿超细尾矿砂的综合利用[J].硅酸盐建筑制品,1992,94(3):24-27.
[12]朱佳文,邹冬生,向言词,等.钝化剂对铅锌尾矿砂中重金属的固化作用[J].农业环境科学学报,2012,31(5):920-925.
[13]Hassan K E,Cabrera J G,Maliehe R S.The effect of mineral admixtures on the properties of high-performance co ncrete[J].Cement and Concrete Composites,2000,22(4):267-271.
[14]田景松.铁尾矿砂混凝土的配制与应用研究[D].北京:清华大学,2010.
[15]王冬卫,康洪震,刘平.铁尾矿砂混凝土立方体抗压强度与轴心抗压强度的关系[J].河北联合大学学报:自然科学版,2013,35(3):102-105.