稻草纤维在轻骨料混凝土中的增韧性能及劈裂抗拉强度预测模型

doi:10.11896/cldb.18120161

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Abstract The higher the concrete strength grade, the greater the brittleness, and such problems are more prominent in lightweight aggregate concrete. Using steel fiber, carbon fiber, polypropylene fiber, etc. to increase the toughness of concrete, although it can achieve certain effects, but has a significant impact on project cost and environment. Based on the wide range of plant fiber sources and environmental friendliness, taking fly ash ceramsite concrete as an example, the influence of straw fiber amount, shape, length and amount of fly ash on the mechanical properties of fly ash ceramsite concrete was explored. Based on the interface transition zone theory, the effect of straw fiber on enhancing toughness was analyzed from the perspective of concrete tensile and compression ratio and impact strength. The results showed that the tensile-compression ratio increases with the increase of straw fiber content, and decreases with the increase of fiber length and fly ash content, the tensile-compression ratio decreases after the fiber modification, but higher than the fiber-free group, the effect of straw fiber on increasing the tensile-compression ratio is similar to that of other fibers, and the effect of improving the impact strength of concrete after modification is remarkable. Based on regression analysis, a prediction model for splitting tensile strength of fiber lightweight aggregate concrete was proposed. The verification results showed that the relative error between the predicted value of the model and the experimental value of the literature was within 7%, the higher the concrete strength level, the more accurate the prediction result, it can be used to predict the tensile strength of fiber concrete and high performance concrete.

Key words： straw fiber fly ash ceramsite embrittlement reduction and increase toughness interface transition zone tension and compression ratio splitting tensile strength

Published: 03 January 2020

CLC number:

TU528.58

About author:: Xueyuan Zhangreceived his M.S. degree in structu-ral engineering from Northeastern University in 2012. He is currently a lecturer in Qiqihar University and participates in teaching and research work in the field of building materials and building structures. His research interests are mechanical properties of recycled concrete and lightweight aggregate concrete and their engineering application.

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	ZHANG Xueyuan
	LYU Chun
	ZHANG Daoming
	WANG Li
	LI Yang

Cite this article:

ZHANG Xueyuan,LYU Chun,ZHANG Daoming, et al. Performance of Increasing Toughness of Straw Fiber in Lightweight Aggregate Concrete and Its Prediction Model of Splitting Tensile Strength[J]. Materials Reports, 2020, 34(2): 2034-2038.

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http://www.mater-rep.com/EN/10.11896/cldb.18120161 OR http://www.mater-rep.com/EN/Y2020/V34/I2/2034

Li R,Li J Z,Meng Y F. Yellow River, 2015,37(2),136(in Chinese).李瑞,李金泽,孟云芳. 人民黄河, 2015,37(2),136.2 Li Rui,Zhang Xiaohua,Meng Yunfang. Advanced Materials Research, 2014, 3295 (977),120.3 Gong Jianqing, Zeng Wei, Zhang Wenjie. Construction and Building Materials, 2018, 159,155.4 Jiang C S. Research on brittleness mechanism and modification of high strength light weight concrete. Doctor’s Thesis, Wuhan University of Technology,China,2010(in Chinese).姜从盛.轻质高强混凝土脆性机理与改性研究.博士学位论文,武汉理工大学,2010.5 Feraidon Ataie. Sustainability, 2018, 10 (7),2445.6 Li C F,Su Y W,Chen G P,et al. Construction Technology, 2013,42(24),63(in Chinese).李超飞,苏有文,陈国平,等. 施工技术, 2013,42(24),63.7 Li C F,Su Y W,Chen G P,et al. Concrete, 2013(10),30(in Chinese).李超飞,苏有文,陈国平,等. 混凝土, 2013(10),30.8 Chen B, Lu Y B, Su S, et al. China Concrete and Cement Products,2017(10),85(in Chinese).陈斌,卢玉斌,苏实,等. 混凝土与水泥制品, 2017(10),85.9 Jian S W, Wang T, Ma B G, et al. Materials Review B: Research Papers, 2014,28(3),132(in Chinese).蹇守卫,汪婷,马保国,等. 材料导报:研究篇, 2014,28(3),132.10 Li W Y, Lu J Q, Xu Y B. Special material new concrete technology, Chemical Industry Press,China,2007(in Chinese).李伟业,刘经强,徐羽白. 特殊材料新型混凝土技术, 化学工业出版社,2007.11 Zhang Y N, Li Z H, Liu X Y, et al. Journal of Jiangsu University (Na-tural Science Edition) , 2017,38(6),719(in Chinese).张延年,李振会,刘晓阳,等. 江苏大学学报(自然科学版), 2017,38(6),719.12 Liu S B, Xu L H. Journal of Wuhan Institute of Technology,2012,34(9),17(in Chinese).刘胜兵,徐礼华. 武汉工程大学学报, 2012,34(9),17.13 Sun N P. Building Science,2014,30(7),19(in Chinese).孙南屏. 建筑科学, 2014,30(7),19.14 Liao Z Y, Lei J S, Chen M T, et al. China Concrete and Cement Products,2017(7),47(in Chinese).廖昭印,雷劲松,陈梦婷,等. 混凝土与水泥制品, 2017(7),47.15 Li J Z, Mou W N,Wang L, et al. Journal of Yangtze River Scientific Research Institute, 2017,34(8),139(in Chinese).李家正,牟伟楠,王磊,等. 长江科学院院报, 2017,34(8),139.16 Chen W. Synergic action of lightweight aggregate-matrix on performance of concrete. Doctor’s Thesis, Chongqing University, China, 2013(in Chinese).陈伟.轻集料-基体协同作用对混凝土性能的影响.博士学位论文,重庆大学,2013.17 Chen L L, Wu F F, He Z Y. Concrete, 2016(9),37(in Chinese).陈亮亮,吴福飞,何周勇. 混凝土, 2016(9),37.18 Yu P. Property study on sintered fly-ash concrete. Master’s Thesis, Dalian Jiaotong University, China, 2009(in Chinese).于萍.粉煤灰陶粒混凝土的性能研究.硕士学位论文,大连交通大学,2009.19 Dong X, Gao J M, Ji B H.Industrial Building,2005,35(Supplement),680(in Chinese).董祥,高建明,吉伯海. 工业建筑, 2005,35(增刊),680.20 Yin J, Zhou S Q. Journal of Changsha Railway University, 2001,19(2),25(in Chinese).尹健,周士琼. 长沙铁道学院学报, 2001,19(2),25.