Experimental Study on Mechanical Properties of UHPC Based on SHPB and Direct Shear Apparatus

doi:10.16552/j.cnki.issn1001-1625.2025.1156

Abstract

Abstract:

In practical engineering， concrete structural members are subjected not only to compressive loads but also frequently to tensile and shear loads. Therefore， investigating the mechanical behavior of ultra-high performance concrete （UHPC） under various stress states and loading rates is crucial for structural safety design. In this study， quasi-static and dynamic compression， splitting tensile， and shear tests were performed on UHPC with and without steel fibers， utilizing a universal testing machine， a split Hopkinson pressure bar （SHPB）， and a self-designed direct shear apparatus. The results indicate that the incorporation of steel fibers significantly enhances the mechanical properties of UHPC under both quasi-static and dynamic conditions. Furthermore， both types of specimens （UHPC with and without steel fibers） exhibit a significant strain rate hardening effect. Specifically， in the shear tests， although the presence of steel fibers and high strain rates alter the evolution characteristics of peak stress， they do not alter the failure mode， which remains as mixture fractures of type I and type II.

Key words: ultra-high performance concrete, split Hopkinson pressure bar, direct shear apparatus, dynamic compression, dynamic splitting, dynamic shearing

CLC Number:

TU528

YANG Heng, LI Mengmeng, CHEN Jiangying. Experimental Study on Mechanical Properties of UHPC Based on SHPB and Direct Shear Apparatus[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(6): 1937-1946.

Figures/Tables 16

Table 1 UHPC mix proportion （mass ratio）

Premix	Water	Steel fiber	Superplasticizer	Defoamer
1.000	0.083	0.088	0.009	0.002

Fig.1 Schematic diagram of shear sample

Fig.2 Schematic diagram of quasi-static shear loading

Fig.3 ?74 mm split Hopkinson pressure bar （SHPB） device

Fig.4 Schematic diagram of dynamic shearing

Fig.5 Quasi-static compressive stress-strain curves

Fig.6 Quasi-static splitting stress-time history curves

Fig.7 Quasi-static shear stress-time history curves

Fig.8 Morphology of quasi-static shear failure

Fig.9 Dynamic test stress balance verification diagrams

Fig.10 Dynamic compressive stress-strain curves

Fig.11 Dynamic compression failure process

Fig.12 Dynamic splitting stress-time history curves

Fig.13 Dynamic splitting failure process

Fig.14 Dynamic shear stress-time history curves

Fig.15 Morphology of dynamic shear failure

References 26

[1]	陈建康. 超高性能混凝土（UHPC）力学性能研究进展［J］. 中国科学：物理学力学天文学， 2024， 54（5）： 148-167.
	CHEN J K. Advances in the mechanical properties of ultra-high performance concrete （UHPC）［J］. Scientia Sinica （Physica， Mechanica & Astronomica）， 2024， 54（5）： 148-167 （in Chinese）.
[2]	李新平，刘　凯，黄俊红，等. 钢纤维无粗集料超高强混凝土的抗侵彻性能研究［J］. 功能材料， 2017， 48（3）： 22-27.
	LI X P， LIU K， HUANG J H， et al. Study on anti-penetration characteristics of ultra-high strength steel fiber concrete without coarse aggregate［J］. Journal of Functional Materials， 2017， 48（3）： 22-27 （in Chinese）.
[3]	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）.
[4]	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）.
[5]	张文华，陈振宇. 超高性能混凝土动态冲击拉伸性能研究［J］. 材料导报， 2017， 31（23）： 103-108+114.
	ZHANG W H， CHEN Z Y. A study of the dynamic tensile property of ultra-high performance concrete［J］. Materials Review， 2017， 31（23）： 103-108+114 （in Chinese）.
[6]	AKEED M H， QAIDI S， ‎AHMED H U， et al. Ultra-high-performance fiber-reinforced concrete. Part I： developments， principles， raw materials［J］. Case Studies in Construction Materials， 2022， 17： e01290.
[7]	BINDIGANAVILE V， BANTHIA N， AARUP B. Impact response of ultra-high-strength fiber-reinforced cement composite［J］. Materials Journal， 2002， 99（6）： 543-548.
[8]	LAI J Z， ZHU Y Y， XU S， et al. Multiple impact penetration of ultra high performance cementitious composites［C］// Proceedings of RILEM-fib-AFGC International Symposium on Ultra-High Performance Fibre-Reinforced Concrete （UHPFRC 2013）， Marseille， France， 2013： 637-646.
[9]	张文华，刘鹏宇，吕毓静. 超高性能混凝土动态力学性能研究进展［J］. 材料导报， 2019， 33（19）： 3257-3271.
	ZHANG W H， LIU P Y， LYU Y J. Dynamic mechanical property of UHPCs： a review［J］. Materials Reports， 2019， 33（19）： 3257-3271 （in Chinese）.
[10]	李为民，许金余. 玄武岩纤维对混凝土的增强和增韧效应［J］. 硅酸盐学报， 2008， 36（4）： 476-481+486.
	LI W M， XU J Y. Strengthening and toughening in basalt fiber-reinforced concrete［J］. Journal of the Chinese Ceramic Society， 2008， 36（4）： 476-481+486 （in Chinese）.
[11]	KOLSKY H. An investigation of the mechanical properties of materials at very high rates of loading［J］. Proceedings of the Physical Society Section B， 1949， 62（11）： 676-700. DOI URL
[12]	马宏伟，张立军，闫晓鹏，等. 混凝土动态劈裂拉伸试验的数值模拟［J］. 宁波大学学报（理工版）， 2003， 16（4）： 349-353.
	MA H W， ZHANG L J， YAN X P， et al. Numerical simulation on the dynamic splitting tensile test of concrete［J］. Journal of Ningbo University （Natural Science and Engineering Edition）， 2003， 16（4）： 349-353 （in Chinese）.
[13]	CARNEIRO F L L B， BARCELLOS A. Resistance à la Traction des Bétons［J］. Bulletin RILEM， 1953， 13： 97-108.
[14]	American Society for Testing and Materials （ASTM International）. Standard test method for splitting tensile strength of cylindrical concrete specimens：［S］. West Conshohocken， PA， USA： American Society for Testing and Materials， 2017.
[15]	International Organization for Standardization. Testing of concrete—Part 4： strength of hardened concrete：［S］. Geneva， Switzerland： International Organization for Standardization， 2020.
[16]	WILLE K， XU M， EL-TAWIL S， et al. Dynamic impact factors of strain hardening UHP-FRC under direct tensile loading at low strain rates［J］. Materials and Structures， 2016， 49（4）： 1351-1365. DOI URL
[17]	ZHAO X， LI Q H， XU S L. Contribution of steel fiber on the dynamic tensile properties of hybrid fiber ultra high toughness cementitious composites using Brazilian test［J］. Construction and Building Materials， 2020， 246： 118416. DOI URL
[18]	SU Y， LI J， WU C Q， et al. Effects of steel fibres on dynamic strength of UHPC［J］. Construction and Building Materials， 2016， 114： 708-718. DOI URL
[19]	LUKIĆ B， FORQUIN P. Experimental characterization of the punch through shear strength of an ultra-high performance concrete［J］. International Journal of Impact Engineering， 2016， 91： 34-45. DOI URL
[20]	中国工程建设标准化协会超高性能混凝土试验方法标准： T/ ［S］. 北京：中国建筑工业出版社， 2021.
	China Association for Engineering Construction Standardization. Standard for test method of ultra-high performance concrete： T/ ［S］. Beijing： China Architecture & Building Press， 2021 （in Chinese）.
[21]	中华人民共和国住房和城乡建设部，国家市场监督管理总局. 混凝土物理力学性能试验方法标准：［S］. 北京：中国建筑工业出版社， 2019.
	Ministry of Housing and Urban-Rural Development of the People’s Republic of China， State Administration for Market Regulation. Standard for test methods of concrete physical and mechanical properties：［S］. Beijing： China Architecture & Building Press， 2019 （in Chinese）.
[22]	王　磊，陈礼鹏，袁秋鹏，等. 不同冲击气压下煤样动态剪切强度的长径比效应［J］. 岩土工程学报， 2024， 46（1）： 131-139.
	WANG L， CHEN L P， YUAN Q P， et al. Length-diameter ratio effects of dynamic shear strength of coal samples under different impact air pressures［J］. Chinese Journal of Geotechnical Engineering， 2024， 46（1）： 131-139 （in Chinese）.
[23]	李萌萌，杨　恒，黄一昶，等. UHPC-NC界面结合状态研究［J］. 宁波大学学报（理工版）， 2025， 38（3）： 9-15.
	LI M M， YANG H， HUANG Y C， et al. Research on the interface bonding state of UHPC-NC［J］. Journal of Ningbo University （Natural Science & Engineering Edition）， 2025， 38（3）： 9-15 （in Chinese）.
[24]	WANG T T， SHANG B. Three-wave mutual-checking method for data processing of SHPB experiments of concrete［J］. Journal of Mechanics， 2014， 30（5）： N5-N10. DOI URL
[25]	袁　伟，李建春，李　星. 花岗岩冲击剪切力学行为的试验及数值模拟研究［J］. 岩土力学， 2024， 45（6）： 1675-1685.
	YUAN W， LI J C， LI X. Experimental and numerical study on mechanical behaviors of granite subjected to impact shear force［J］. Rock and Soil Mechanics， 2024， 45（6）： 1675-1685 （in Chinese）. DOI URL
[26]	DENG F K. Mechanical properties and energy-saving effect of polypropylene fiber foam concrete［J］. Research Journal of Applied Sciences， Engineering and Technology， 2013， 6（11）： 2012-2018.