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Experimental study on workability and permeability of sandy soils conditioned with thickened foam

Feng, Zhiyao (author), Wang, Shuying (author), Qu, Tongming (author), Zheng, X. (author), Ling, Fanlin (author)

Water spewing and muck plugging often occur during earth pressure balance (EPB) shield machines tunnelling in water-rich sandy strata, even though the conventional foam has been employed to condition sandy soils. In this study, a novel thickened foaming agent suitable for EPB shield tunnelling in water-rich sandy strata is developed. In...

journal article 2024

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Size effect on compressive strength of foamed concrete: Experimental and numerical studies

Jiang, Nengdong (author), Ge, Zhi (author), Wang, Zhiyuan (author), Gao, Tianming (author), Zhang, Hongzhi (author), Ling, Yifeng (author), Šavija, B. (author)

This study investigates the size effect on the compressive strength of foamed concrete at the mesoscale level combining X-ray computed tomography (X-CT) and a discrete lattice model. Image segmentation techniques and X-CT were employed to obtain virtual specimens comprising hydrated cement paste and air voids. The lineal-path function and...

journal article 2024

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Synergistic effects of cerium-containing bioactive glasses and apoptotic extracellular vesicles alleviate bisphosphonate-related osteonecrosis of jaw

Ling, Ziji (author), Guo, Songsong (author), Xie, Hanyu (author), Chen, Xinyu (author), Yu, K. (author), Jiang, Hongbing (author), Xu, Rongyao (author), Wu, Yunong (author), Zheng, K. (author)

Bisphosphonates (BPs) are commonly used to treat skeletal diseases. However, long-term use of BPs can lead to BP-related jaw bone necrosis (BRONJ), particularly in patients undergoing tooth extraction surgery. The treatment of BRONJ remains challenging due to the local inflammatory microenvironment. To address this issue, we developed...

journal article 2024

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Influence of fiber orientation on the mechanical responses of engineering cementitious composite (ECC) under various loading conditions

Tawfek, Abdullah M. (author), Ge, Zhi (author), Yuan, Huaqiang (author), Zhang, Ning (author), Zhang, Hongzhi (author), Ling, Yifeng (author), Guan, Yanhua (author), Šavija, B. (author)

The mechanical performance of engineered cementitious composite (ECC) depends greatly on fiber orientation and distribution. In this paper, the effect of fiber orientation on ECC's mechanical properties was investigated using two different casting methods: a flow-induced casting was used to enhance the fiber orientation within ECC mixture and...

journal article 2023

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基于分段步进式弹塑性格构模型的混凝土破坏过程细观模拟

Zhang, H. (author), Jin, Zuquan (author), Jiang, Nengdong (author), Ge, Zhi (author), Schlangen, E. (author), Ling, Yifeng (author), Šavija, B. (author), Wang, Zheng (author)

The classically lattice model assumes the local elements behave elastic brittle, neglecting the ductility of the mortar matrix. This leads to the simulated load⁃displacement response more brittle than the realistic. To solve the aforementioned issue, a piece⁃wise approach was introduced to describe the elastic⁃plastic constitutive relation of...

journal article 2023

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Influence of Fiber Orientation on the Water and Ions Transportation of Engineered Cementitious Composite (ECC)

Tawfek, Abdullah M. (author), Ge, Zhi (author), Li, Jian (author), Zhang, Kangkang (author), Jiang, Nengdong (author), Shao, Yingxuan (author), Ling, Yifeng (author), Šavija, B. (author)

An engineered cementitious composite (ECC) belongs to a type of high-performance fiber-reinforced materials. Fiber alignment causes the anisotropy of such materials. Herein, the influence of the fiber orientation on water and ion penetration into an ECC was studied. Fiber alignment was achieved using an extrusion approach. Water absorption,...

journal article 2023

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Behavior of Engineered Cementitious Composites (ECCs) Subjected to Coupled Sustained Flexural Load and Salt Frost

Li, Yonghao (author), Zhang, Ning (author), Sun, Renjuan (author), Guan, Yanhua (author), Liu, Lemin (author), Tian, Changjin (author), Ling, Yifeng (author), Zhang, Hongzhi (author), Šavija, B. (author)

The performance of engineered cementitious composites (ECCs) under coupled salt freezing and loaded conditions is important for its application on the transportation infrastructure. However, in most of the studies, the specimens were generally loaded prior to the freezing. The influence of sustained load was merely considered. To this end,...

journal article 2023

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Experimentally validated meso-scale fracture modelling of foamed concrete

Jiang, Nengdong (author), Ge, Zhi (author), Guan, Yanhua (author), Zuo, Zhiwu (author), Zhang, Hongzhi (author), Ling, Yifeng (author), Šavija, B. (author)

This work presents a study of mechanical properties of foamed concrete at the meso-scale based on a combination of X-ray computed tomography (XCT) technique and a discrete lattice type fracture model. The microstructure of the foamed concrete with different densities was obtained by XCT technique and binarized as two-phase (pore/solid) materials...

journal article 2022

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Mechanical behaviour and energy evolution of polyurethane-mixed ballast under revised bonding constitutive model

Xiao, Hong (author), Ling, Xing (author), Wang, Meng (author), Fang, Shu Wei (author), Wang, Haoyu (author)

The bonding contact presents complex modes in polyurethane-mixed ballast. The commonly used parallel bond model is revised and four different contact models are developed including Ballast-Ballast Contact Bonding, Ballast-Ballast Noncontact Bonding, Ballast-Sleeper Contact Bonding, and Ballast-Sleeper Noncontact Bonding. The mechanical...

journal article 2022

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Statistical mixture design for carbide residue activated blast furnace slag foamed lightweight concrete

Zhang, Hongzhi (author), He, Yanchen (author), Wang, Chuan (author), Guan, Yanhua (author), Ge, Zhi (author), Sun, Renjuan (author), Ling, Yifeng (author), Šavija, B. (author)

Carbide residue activated blast furnace slag is a relatively new kind of eco-friendly construction materials. This work addresses the design of foamed lightweight concrete as road embankment material using such material. A statistical mixture design approach was adopted to assess the influence of each ingredient as well as the interaction...

journal article 2022

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Effect of crack width and wet-dry cycles on the chloride penetration resistance of engineered cementitious composite (ECC)

Sun, Renjuan (author), Lu, Wei (author), Tawfek, Abdullah M. (author), Guan, Yanhua (author), Hu, Xinlei (author), Zhang, Hongzhi (author), Ling, Yifeng (author), Šavija, B. (author)

The resistance of cracked ECC against chloride ingress is mainly governed by the accumulated crack width of all the cracks rather than the maximum width of multiple cracks. However, most studies focus on the influence of a single fine crack

journal article 2022

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Fatigue life and cracking characterization of engineered cementitious composites (ECC) under flexural cyclic load

Sun, Renjuan (author), Han, Lebing (author), Zhang, Hongzhi (author), Ge, Zhi (author), Guan, Yanhua (author), Ling, Yifeng (author), Schlangen, E. (author), Šavija, B. (author)

This paper presents a study on cracking characterization of engineered cementitious composites (ECC) under flexural cyclic load using digital image correlation (DIC) technique. Five stress levels, namely 0.65, 0.75, 0.8, 0.85 and 0.9 of the flexural strength, were applied. Strain map at the side surface was obtained by DIC and used to drive...

journal article 2022

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Fixation effects of different types of cannulated screws on vertical femoral neck fracture: A finite element analysis and experimental study

Zhan, Shi (author), Jiang, Dajun (author), Ling, Ming (author), Ding, Jian (author), Yang, Kai (author), Duan, Lei (author), Tsai, Tsung Yuan (author), Feng, Yong (author), van Trigt, B. (author), Jia, Weitao (author), Zhang, Changqing (author), Hu, Hai (author)

Femoral neck fractures (FNFs) in young patients usually result from high-energy violence, and the vertical transcervical type is typically challenging for its instability. FNFs are commonly treated with three cannulated screws (CS), but the role of screws type on fixation effects (FE) is unclear. The purpose of this study was to evaluate the...

journal article 2021

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Experimental comparisons between one-part and normal (two-part) alkali-activated slag binders

Ren, Jie (author), Sun, Hongfang (author), Li, Qun (author), Li, Z. (author), Ling, Li (author), Zhang, Xiaogang (author), Wang, Yanshuai (author), Xing, Feng (author)

One-part alkali-activated slag (AAS) binders are more promising in large-scale constructions because one-part mixing procedure is safer and easier to handle compared to normal two-part method. Thus, this study aims at investigating different properties of one-part AAS binders and control samples prepared using the two-part method. Experimental...

journal article 2021

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Modelling of satellite constellations for trusted node QKD networks

Vergoossen, Tom (author), Loarte, Sergio (author), Bedington, Robert (author), Kuiper, J.M. (author), Ling, Alexander (author)

Quantum key distribution from satellites becomes particularly valuable when it can be used on a large network and on-demand to provide a symmetric encryption key to any two nodes. A constellation model is described which enables QKD-derived encryption keys to be established between any two ground stations with low latency. This is achieved...

journal article 2020

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Assessing the transition effects in a drinking water distribution system caused by changing supply water quality: an indirect approach by characterizing suspended solids

Chen, L. (author), Ling, Fangqiong (author), Bakker, Geo (author), Liu, Wen Tso (author), Medema, G.J. (author), van der Meer, W.G.J. (author), Liu, G. (author)

Worldwide, it is common that the drinking water distribution systems (DWDSs) may be subjected to changes of supply water quality due to the needs of upgrading the treatment processes or switching the source water. However, the potential impacts of quality changed supply water on the stabilized ecological niches within DWDSs and the associated...

journal article 2020

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Engineering NADH/NAD⁺ ratio in Halomonas bluephagenesis for enhanced production of polyhydroxyalkanoates (PHA)

Ling, Chen (author), Qiao, Guan Qing (author), Shuai, Bo Wen (author), Olavarria, Karel (author), Yin, Jin (author), Xiang, Rui Juan (author), Song, Kun Nan (author), Shen, Yun Hao (author), Guo, Yingying (author), Chen, G. (author)

Halomonas bluephagenesis has been developed as a platform strain for the next generation industrial biotechnology (NGIB) with advantages of resistances to microbial contamination and high cell density growth (HCD), especially for production of polyhydroxyalkanoates (PHA) including poly(3-hydroxybutyrate) (PHB), poly(3-hydroxybutyrate-co-4...

journal article 2018

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CubeSat quantum communications mission

Oi, Daniel K.L. (author), Ling, Alex (author), Vallone, Giuseppe (author), Villoresi, Paolo (author), Greenland, Steve (author), Kerr, Emma (author), Macdonald, Malcolm (author), Weinfurter, Harald (author), Kuiper, J.M. (author), Charbon-Iwasaki-Charbon, E. (author), Ursin, Rupert (author)

Quantum communication is a prime space technology application and offers near-term possibilities for long-distance quantum key distribution (QKD) and experimental tests of quantum entanglement. However, there exists considerable developmental risks and subsequent costs and time required to raise the technological readiness level of...

journal article 2017

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Comparison of Particle-Associated Bacteria from a Drinking Water Treatment Plant and Distribution Reservoirs with Different Water Sources

Liu, G. (author), Ling, F.Q. (author), Van der Mark, E.J. (author), Zhang, X.D. (author), Knezev, A. (author), Verberk, J.Q.J.C. (author), Van der Meer, W.G.J. (author), Medema, G.J. (author), Liu, W.T. (author), Van Dijk, J.C. (author)

This study assessed the characteristics of and changes in the suspended particles and the associated bacteria in an unchlorinated drinking water distribution system and its reservoirs with different water sources. The results show that particle-associated bacteria (PAB) were present at a level of 0.8–4.5?×?103 cells ml?1 with a biological...

journal article 2016

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Virtual bystanders in a language lesson: Examining the effect of social evaluation, vicarious experience, cognitive consistency and praising on students' beliefs, self-efficacy and anxiety in a virtual reality environment

Qu, C. (author), Ling, Y. (author), Heynderickx, I. (author), Brinkman, W.P. (author)

Bystanders in a real world's social setting have the ability to influence people’s beliefs and behavior. This study examines whether this effect can be recreated in a virtual environment, by exposing people to virtual bystanders in a classroom setting. Participants (n = 26) first witnessed virtual students answering questions from an English...

journal article 2015