Effects of Different Types of Recycled Fine Aggregate on Mechanical Properties of Thermal Insulation Concrete

Abstract

Abstract: In order to study the influence of different types of recycled fine aggregate on the mechanical properties of glazed hollow bead thermal insulation concrete, the natural river sand in thermal insulation concrete were replaced by recycled fine aggregate of waste concrete and recycled fine aggregate of clay brick at 25%, 50%, 75% and 100% (volume fraction) replacement ratio, respectively. And the recycled aggregate thermal insulation concrete compressive strength, splitting tensile strength and modulus of elasticity were measured. The experimental results show that 25% is the optimal replacement rate of recycled fine aggregate of waste concrete in thermal insulation concrete.75% is the optimal substitution rate of recycled fine aggregate of waste clay brick in thermal insulation concrete. Crushing value of recycled fine aggregate and strength ratio of recycled mortar effectively distinguish the quality of different types of recycled fine aggregate in practical engineering. The volcanic ash material in the recycled fine aggregate of the waste clay brick effectively improves the compactness of the recycled aggregate thermal insulation concrete, while the residual calcium hydroxide in the recycled fine aggregate of the waste concrete reduces the mechanical properties of the recycled aggregate thermal insulation concrete, so the recycled fine aggregate of the waste clay brick has higher recycling value.

Key words: glazed hollow bead, recycled aggregate thermal insulation concrete, recycled fine aggregate, quality, mechanical property

CLC Number:

TU528.79

HUANG Kailin, LI Shujin, ZANG Xuhang. Effects of Different Types of Recycled Fine Aggregate on Mechanical Properties of Thermal Insulation Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2341-2347.

References

[1] DANG J T, ZHAO J, PANG S D, et al. Durability and microstructural properties of concrete with recycled brick as fine aggregates[J]. Construction and Building Materials, 2020, 262: 120032.
[2] 李述俊,赵霄龙,李秋义,等.再生微粉基本性能及活性试验研究[J].硅酸盐通报,2019,38(10):3314-3319+3325.
LI S J, ZHAO X L, LI Q Y, et al. Experimental study on basic properties and activity of recycled fine powder[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(10): 3314-3319+3325 (in Chinese).
[3] 元成方,李爽,曾力,等.砖砼混合再生粗骨料混凝土力学性能研究[J].硅酸盐通报,2018,37(2):398-402.
YUAN C F, LI S, ZENG L, et al. Mechanical properties of brick and concrete mixed recycled coarse aggregate concrete[J]. Bulletin of the Chinese Ceramic Society, 2018, 37(2): 398-402 (in Chinese).
[4] KIRTHIKA S K, SINGH S K, CHOURASIA A. Alternative fine aggregates in production of sustainable concrete: a review[J]. Journal of Cleaner Production, 2020, 268: 122089.
[5] WANG Y Y, ZHANG H, GENG Y, et al. Prediction of the elastic modulus and the splitting tensile strength of concrete incorporating both fine and coarse recycled aggregate[J]. Construction and Building Materials, 2019, 215: 332-346.
[6] 刘宇航,刘元珍,Md.Tashfique Uddin Chowdhury,等.强度等级对再生保温混凝土尺寸效应的影响[J].混凝土,2020(11):36-39.
LIU Y H, LIU Y Z, CHOWDHURY M, et al. Effects of strength grade on size effect of recycled aggregate thermal insulation concrete[J]. Concrete, 2020(11): 36-39 (in Chinese).
[7] 郭耀东,刘元珍,陈阳,等.再生粗骨料预湿状态对混凝土抗压强度的影响[J].广西大学学报(自然科学版),2017,42(4):1548-1553.
GUO Y D, LIU Y Z, CHEN Y, et al. Effect of pre-wetting of recycled coarse aggregate on compressive strength of concrete[J]. Journal of Guangxi University (Natural Science Edition), 2017, 42(4): 1548-1553 (in Chinese).
[8] WANG W J, LIU Y Z, QIN X C, et al. Size effects on mechanical properties of recycled aggregate thermal insulation concrete[J]. Construction and Building Materials, 2020, 264: 120179.
[9] 白浩杰,刘元珍,郭耀东,等.基于GA-BP神经网络的再生保温混凝土强度预测[J].混凝土,2020(11):16-19+25.
BAI H J, LIU Y Z, GUO Y D, et al. Prediction of recycled aggregate thermal insulation concrete strength based on GA-BP neural network[J]. Concrete, 2020(11): 16-19+25 (in Chinese).
[10] 张会芝,闫艳红,崔秀琴.基于总功效系数法的自保温再生混凝土配合比优化[J].四川建筑科学研究,2017,43(2):112-115+135.
ZHANG H Z, YAN Y H, CUI X Q. Mix proportion optimization of self-insulation and recycled concrete based on total efficiency coefficient method[J]. Sichuan Building Science, 2017, 43(2): 112-115+135 (in Chinese).
[11] 郭耀东,刘元珍,王文婧,等.再生粗骨料预湿用水量对再生保温混凝土抗压强度的影响研究[J].混凝土,2017(5):82-85.
GUO Y D, LIU Y Z, WANG W J, et al. Effects of water consumption of prewetting recycled coarse aggregate on compressive strength of recycled thermal insulation concrete[J]. Concrete, 2017(5): 82-85 (in Chinese).
[12] 赵雨,刘元珍,王文婧,等.再生粗骨料取代率对再生保温混凝土抗压强度离散性影响[J].科学技术与工程,2017,17(13):275-279.
ZHAO Y, LIU Y Z, WANG W J, et al. Influence of recycled coare aggregate replacement rate on the discreteness of the compressire strength of recycled aggregate thermal insulation concrete[J]. Science Technology and Engineering, 2017, 17(13): 275-279 (in Chinese).
[13] 王绎景,李珠,秦渊,等.再生骨料替代率对混凝土抗压强度影响的研究[J].混凝土,2018(12):27-30+33.
WANG Y J, LI Z, QIN Y, et al. Effect of replacement rate of recycled coarseaggretrate on compressive strength of concrete[J]. Concrete, 2018(12): 27-30+33 (in Chinese).
[14] 李康,刘元珍,赵敏,等.再生细骨料保温混凝土抗压强度试验研究[J].新型建筑材料,2017,44(7):76-78.
LI K, LIU Y Z, ZHAO M, et al. Experimental study on compressive strength of recycled aggregate thermal insulation concrete[J]. New Building Materials, 2017, 44(7): 76-78 (in Chinese).
[15] 赵敏,刘元珍,姜鲁,等.不同状态再生细骨料对再生保温混凝土抗压强度的影响[J].科学技术与工程,2017,17(10):281-285.
ZHAO M, LIU Y Z, JIANG L, et al. Effect of the different states of recycled fine aggregate on the compressive strength of recycled aggregate thermal insulation concrete[J]. Science Technology and Engineering, 2017, 17(10): 281-285 (in Chinese).
[16] 张会芝,连跃宗.再生保温混凝土的力学性能试验研究[J].新型建筑材料,2013,40(2):68-70+74.
ZHANG H Z, LIAN Y Z. Experimental study on mechanical properties of recycled insulating concrete[J]. New Building Materials, 2013, 40(2): 68-70+74 (in Chinese).
[17] RODRIGUES F, CARVALHO M T, EVANGELISTA L, et al. Physical-chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants[J]. Journal of Cleaner Production, 2013, 52: 438-445.
[18] 封金财,卢月园,朱平华.混凝土用再生细骨料质量等级模糊综合评估方法[J].混凝土,2016(11):126-129.
FENG J C, LU Y Y, ZHU P H. Fuzzy synthesis method for evaluating quality class of recycled concrete fine aggregate[J]. Concrete, 2016(11): 126-129 (in Chinese).
[19] ZHANG H, WANG Y Y, LEHMAN D E, et al. Time-dependent drying shrinkage model for concrete with coarse and fine recycled aggregate[J]. Cement and Concrete Composites, 2020, 105: 103426.
[20] 谢友均,马昆林,龙广成,等.矿物掺合料对混凝土中氯离子渗透性的影响[J].硅酸盐学报,2006,34(11):1345-1350.
XIE Y J, MA K L, LONG G C, et al. Influence of mineral admixture on chloride ion permeability of concrete[J]. Journal of the Chinese Ceramic Society, 2006, 34(11): 1345-1350 (in Chinese).
[21] AKONO A T, ZHAN M M, CHEN J X, et al. Nanostructure of calcium-silicate-hydrates in fine recycled aggregate concrete[J]. Cement and Concrete Composites, 2021, 115: 103827.
[22] HE Z M, SHEN A Q, WU H S, et al. Research progress on recycled clay brick waste as an alternative to cement for sustainable construction materials[J]. Construction and Building Materials, 2021, 274: 122113.
[23] HUANG Q, ZHU X H, XIONG G Q, et al. Recycling of crushed waste clay brick as aggregates in cement mortars: an approach from macro- and micro-scale investigation[J]. Construction and Building Materials, 2021, 274: 122068.
[24] 梅塔,蒙蒂罗.混凝土微观结构、性能和材料[M].4版.北京:中国建筑工业出版社,2016.
PKUMAR M, PAULO M. Microstructure, properties and materials of concrete[M]. 4th ed. Beijing: China Building Industry Press, 2016 (in Chinese).