Preparation and Performance Analysis of Iron Tailings Ceramsite Concrete

Abstract

Abstract: Iron tailings ceramsite concrete (from LC30 to LC40) was prepared according to “Technical specification for lightweight aggregate concrete” (JGJ/T 12—2019) by replacing natural coarse aggregate with iron tailings ceramsite. The mechanical properties, durability and economy of the concrete were measured and compared with ordinary concrete. The results show that iron tailings ceramsite concrete meets the requirements of “Technical specification for lightweight aggregate concrete” (JGJ/T 12—2019) LC30 strength. The correlation between strength and water binder ratio is lower than that of ordinary concrete. The flexural strength and elastic modulus are only about 60% and 65% of that of ordinary concrete, respectively. But the chloride ion permeability and frost resistance are significantly better than ordinary concrete. The feasibility of iron tailings ceramsite used in the preparation of lightweight aggregate concrete and the comprehensive performance of the concrete are obtained, which provides data support for the next step of prefabricated component design, and the problem of iron tailings recycling in southern Shaanxi is indirectly solved.

Key words: iron tailings ceramsite, iron tailings ceramsite concrete, mechanical property, durability, economic analysis

CLC Number:

TQ171

LI Xiaoguang, HOU Xinxin, LIANG Baozhen, WANG Panqi, ALI Saddam. Preparation and Performance Analysis of Iron Tailings Ceramsite Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(3): 929-935.

References

[1] 诸雪青.粉煤灰陶粒混凝土配合比优化设计及综合应用性能[D].青岛:青岛理工大学,2016.
ZHU X Q. Comprehensive appication properties and mix ratio optimization of fly ash ceramisite concrete[D]. Qingdao: Qingdao Tehcnology University, 2016 (in Chinese).
[2] 王帅.陶粒混凝土的试验研究[D].天津:天津大学,2012.
WANG S. Experiment research on ceramsite concrete[D]. Tianjin: Tianjin University, 2012 (in Chinese).
[3] 孟祥然,周月鑫,郭晓影.铁尾矿综合利用研究综述[J].辽宁科技学院学报,2019,21(3):11-14.
MENG X R, ZHOU Y X, GUO X Y. Summary of researching on comprehensive utilization of iron ore tailings[J]. Journal of Liaoning Institute of Science and Technology, 2019, 21(3): 11-14 (in Chinese).
[4] 王德民,雷国元,宋均平,等.低硅铁尾矿陶粒的制备与应用[J].金属矿山,2013(9):163-166.
WANG D M, LEI G Y, SONG J P, et al. Preparation and utilization of ceramsite made of low silica iron tailings[J]. Metal Mine, 2013(9): 163-166 (in Chinese).
[5] 李涵.铁尾矿陶粒制备工艺及混凝土性能研究[D].西安:长安大学,2018.
LI H. Study on preparation technology of iron tailings ceramsite and performance of concrete[D]. Xi’an: Changan University, 2018 (in Chinese).
[6] 潘婷婷,王彦伟.页岩陶粒混凝土冻融试验研究[J].河南城建学院学报,2014,23(6):29-34.
PAN T T, WANG Y W. Study on frost resistance and anti-permeability of carbon nanotubes shotcrete[J]. Journal of Henan University of Urban Construction, 2014, 23(6): 29-34(in Chinese).
[7] 李博.冻融循环下高强度陶粒混凝土的耐久性能研究[J].新型建筑材料,2017,44(8):93-96.
LI B. Durability research on high strength ceramsite concrete at freezing-thawing cycles[J]. New Building Materials, 2017, 44(8): 93-96 (in Chinese).
[8] 郑秀华,张宝生,葛勇,等.页岩陶粒混凝土性能的研究[J].混凝土,2004(12):32-33+44-51.
ZHENG X H, ZHANG B S, GE Y, et al. Study on properties of shale ceramsite concrete[J]. Concrete, 2004(12): 32-33+44-51 (in Chinese).
[9] 刘喜,吕贝贝,刘全威,等.高强轻骨料陶粒混凝土配合比及强度影响因素试验研究[J].硅酸盐通报,2014,33(4):847-852.
LIU X, LV B B, LIU Q W, et al. Mechanical properties of lightweight concrete under mix proportion and strength factors[J]. Bulletin of the Chinese Ceramic Society, 2014, 33(4): 847-852 (in Chinese).
[10] 穆龙飞,李思琪,冯竟竟,等.预湿骨料对陶粒混凝土性能影响的试验研究[J].混凝土与水泥制品,2019(11):66-69.
MU L F, LI S Q, FENG J J, et al. Study on effect of prewet aggregate on performance of ceramsite concrete[J]. China Concrete and Cement Products, 2019(11): 66-69 (in Chinese).
[11] CAO Z M, HE Z G, YANG Y. Experimental study on the influence of water cement ratio on the compressive strength of shale ceramsite concrete[J]. Applied Mechanics and Materials, 2012, 204/205/206/207/208: 3895-3898.
[12] LO T Y, CUI H Z. Effect of porous lightweight aggregate on strength of concrete[J]. Materials Letters, 2004, 58(6): 916-919.
[13] 赵威,王之宇,周春生,等.陶粒粒径及级配对陶粒混凝土力学性能的影响[J].非金属矿,2020,43(3):37-39.
ZHAO W, WANG Z Y, ZHOU C S, et al. Effect of ceramsite size and gradation on mechanical properties of ceramsite concrete[J]. Non-Metallic Mines, 2020, 43(3): 37-39 (in Chinese).
[14] 孔丽娟,高礼雄,葛勇.轻骨料预湿程度对混合骨料混凝土抗冻性能影响[J].硅酸盐学报,2011,39(1):35-40.
KONG L J, GAO L X, GE Y. Effect of lightweight aggregate pre-wetting on frost-resistance of combined aggregate concrete[J]. Journal of the Chinese Ceramic Society, 2011, 39(1): 35-40 (in Chinese).
[15] ZHANG B S, KONG L J, GE Y. Influence of lightweight aggregate on durability of high performance concrete[J]. Key Engineering Materials, 2009, 405/406: 197-203.
[16] GE Y, KONG L J, ZHANG B S, et al. Effect of lightweight aggregate pre-wetting on microstructure and permeability of mixed aggregate concrete[J]. Journal of Wuhan University of Technology-Mater Sci Ed, 2009, 24(5): 838-842.