Steel Fibre Parameter Optimization of Ultra-High Performance Concrete Based on Dense Particle Packing Theory

Abstract

Abstract: The basic mixture of ultra-high performance concrete (UHPC) was optimized by the modified Andreasen & Andersen particle packing model, and the effects of steel fibre shape, content and hybridization on the wet packing density of UHPC were evaluated. Moreover, the D-optimal design (DOD) method was employed for modelling of wet packing density of UHPC against hybrid steel fibres. The results reveal that the incorporation of long straight fibres, short straight fibres and hooked-end fibres have varying degrees of effects on UHPC packing system, among which the end hook fibre reduces the density of UHPC the most. In addition, the steel fibre content has obvious effects on wet packing density of UHPC, and especially as the steel fibre content exceeds 2.0% (volume fraction, below is the same), the packing density of UHPC drops dramatically, resulting in significant damage to UHPC packing system. Based on the analysis results of the DOD model, it is concluded that the hybridization of 0.9% long straight fibres and 1.1% hooked-end fibres is optimized mixture and disturbing effect of steel fibre on UHPC accumulation system is minimized.

Key words: ultra-high performance concrete, hybrid steel fibre, D-optimal design, wet packing density, packing system, performance prediction

CLC Number:

TU528.58

ZHENG Li, CHEN Luyi, ZHANG Zhihao. Steel Fibre Parameter Optimization of Ultra-High Performance Concrete Based on Dense Particle Packing Theory[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(3): 853-859.

References

[1] 陈宝春,季韬,黄卿维,等.超高性能混凝土研究综述[J].建筑科学与工程学报,2014,31(3):1-24.
CHEN B C, JI T, HUANG Q W, et al. Review of research on ultra-high performance concrete[J]. Journal of Architecture and Civil Engineering, 2014, 31(3): 1-24 (in Chinese).
[2] 邵旭东,邱明红,晏班夫,等.超高性能混凝土在国内外桥梁工程中的研究与应用进展[J].材料导报,2017,31(23):33-43.
SHAO X D, QIU M H, YAN B F, et al. A review on the research and application of ultra-high performance concrete in bridge engineering around the world[J]. Materials Review, 2017, 31(23): 33-43 (in Chinese).
[3] 张云升,张文华,陈振宇.综论超高性能混凝土:设计制备·微观结构·力学与耐久性·工程应用[J].材料导报,2017,31(23):1-16.
ZHANG Y S, ZHANG W H, CHEN Z Y. A complete review of ultra-high performance concrete: design and preparation, microstructure, mechanics and durability, engineering applications[J]. Materials Review, 2017, 31(23): 1-16 (in Chinese).
[4] 陈宝春,林毅焌,杨简,等.超高性能纤维增强混凝土中纤维作用综述[J].福州大学学报(自然科学版),2020,48(1):58-68.
CHEN B C, LIN Y J, YANG J, et al. Review on fiber function in ultra-high performance fiber reinforced concrete[J]. Journal of Fuzhou University (Natural Science Edition), 2020, 48(1): 58-68 (in Chinese).
[5] YU R, SPIESZ P, BROUWERS H J H. Mix design and properties assessment of ultra-high performance fibre reinforced concrete (UHPFRC)[J]. Cement and Concrete Research, 2014, 56: 29-39.
[6] WONG V, KWAN A K H. A 3-parameter model for packing density prediction of ternary mixes of spherical particles[J]. Powder Technology, 2014, 268: 357-367.
[7] 张文华,张仔祥,刘鹏宇,等.多尺度纤维增强超高性能混凝土的轴心抗拉和抗压行为[J].硅酸盐学报,2020,48(8):1155-1167.
ZHANG W H, ZHANG Z X, LIU P Y, et al. Uniaxial tensile and compressive stress-strain behavior of multi-scale fiber-reinforced ultra-high performance concrete[J]. Journal of the Chinese Ceramic Society, 2020, 48(8): 1155-1167 (in Chinese).
[8] LARRARD F. Concrete mixture proportioning: a scientific approach[M]. CRC Press, 1999.
[9] LI L G, ZHUO H X, ZHU J, et al. Packing density of mortar containing polypropylene, carbon or basalt fibres under dry and wet conditions[J]. Powder Technology, 2019, 342: 433-440.
[10] YU R, SPIESZ P, BROUWERS H J H. Energy absorption capacity of a sustainable ultra-high performance fibre reinforced concrete (UHPFRC) in quasi-static mode and under high velocity projectile impact[J]. Cement and Concrete Composites, 2016, 68: 109-122.
[11] WU Z M, SHI C J, HE W, et al. Static and dynamic compressive properties of ultra-high performance concrete (UHPC) with hybrid steel fiber reinforcements[J]. Cement and Concrete Composites, 2017, 79: 148-157.
[12] 余睿,范定强,水中和,等.基于颗粒最紧密堆积理论的超高性能混凝土配合比设计[J].硅酸盐学报,2020,48(8):1145-1154.
YU R, FAN D Q, SHUI Z H, et al. Mix design of ultra-high performance concrete based on particle densely packing theory[J]. Journal of the Chinese Ceramic Society, 2020, 48(8): 1145-1154 (in Chinese).
[13] 刘潇,范定强,胡锋,等.基于D-最优设计方法预测超高性能混凝土的湿堆积密实度及力学性能[J].节能,2020,39(7):99-104.
LIU X, FAN D Q, HU F, et al. Prediction of wet packing density and mechanical properties of ultra-high performance concrete by D-optimal design method[J]. Energy Conservation, 2020, 39(7): 99-104 (in Chinese).
[14] FAN D Q, YU R, SHUI Z H, et al. A new design approach of steel fibre reinforced ultra-high performance concrete composites: experiments and modeling[J]. Cement and Concrete Composites, 2020, 110: 103597.
[15] WONG H H C, KWAN A K H. Packing density of cementitious materials: part 1—measurement using a wet packing method[J]. Materials and Structures, 2008, 41(4): 689-701.
[16] YANG R, YU R, SHUI Z H, et al. Feasibility analysis of treating recycled rock dust as an environmentally friendly alternative material in ultra-high performance concrete (UHPC)[J]. Journal of Cleaner Production, 2020, 258: 120673.
[17] LI L G, KWAN A K H. Packing density of concrete mix under dry and wet conditions[J]. Powder Technology, 2014, 253: 514-521.
[18] RAMEZANIANPOUR A A, ESMAEILI M, GHAHARI S A, et al. Laboratory study on the effect of polypropylene fiber on durability, and physical and mechanical characteristic of concrete for application in sleepers[J]. Construction and Building Materials, 2013, 44: 411-418.
[19] MURALIDHAR R V, CHIRUMAMILA R R, MARCHANT R, et al. A response surface approach for the comparison of lipase production by Candida cylindracea using two different carbon sources[J]. Biochemical Engineering Journal, 2001, 9(1): 17-23.