Self-cleaning engineered cementitious composites

Zhao, Aiqin; Yang, Jinglei; Yang, En-Hua

doi:10.1016/j.cemconcomp.2015.09.007

Cited by 91 publications

(26 citation statements)

References 23 publications

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“…Further increase of concentration subsequently covered more and more on the surface of hydration product, which enlarges TiO 2 agglomeration level on substrate surface. This finding is consistent with the work byYang et al (2017) andZhao et al (2015). Furthermore, the EDX spectrum and the inset table inFigure 3-9(a) andFigure 3-9(b) present the elemental identification and quantitative compositional information of hardened cement.…”

supporting

confidence: 90%

“…On the other hand, the lightweight ECC mixtures with TiO 2 also shows a lower compressive strength than the mixtures without TiO 2 . This might be ascribed to the agglomeration of nanoparticles which introduces weak zone in the ECC matrix, leading to reduction of compressive strength (Zhao et al, 2015). It was noticed that PL-ECC with glass bubble (mix 5 and mix 6) display a unique foam-structure behaviour under compression, which is totally distinct behaviour from those commonly brittle failure observed in cementitious materials.…”

Section: Mechanical Testmentioning

confidence: 99%

“…if material porosity increases, it lessened the mean size of solid wall. Then, the crack can directly link two neighbour pores and it can break another (Zhao et al, 2015). These conditions are favourable for achieving multiple fine cracking and improving tensile strain capacity.…”

Section: Mechanical Testmentioning

confidence: 99%

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Photocatalytic cementitious material for self-cleaning and anti-microbial application

Hamdany¹

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First of all, the author would like to express his greatest gratitude to his supervisor, Assistant Professor Qian Shunzhi, not only for his invaluable supervision and advice but also for sharing his experiences, encouragement and motivation throughout the journey of his PhD program. The author owes his deepest gratitude to Dr Wei Li and Dr Ding Yuanzhao for their endless assistance and patience in guiding and helping the author on experimental design, chemical synthesis, microbiological related experiments, training for using equipment and report writing. The author would also like to extend his sincere gratitude to Nanyang Technological University for the NTU research scholarship. The author would like to thank all colleagues in his group (Weng Yiwei, Lu Bing, Liu Siyu, Dr Zhang Zhigang), Dr Martin Wijaya (CEE), Dr Ronny William (SPMS), and Dr Namyo Salim (CEE) for their comments and helpful discussion. The author also would like to thank all of PhD students in Prof Chen Yuan's group, Mr Cheng from CT Lab, Mr Phua from CT Lab, Ms Lim, Han Khiang from Environmental Lab and technicians that have not been mentioned for all the helps and friendship through these years. Finally, the author would like to express his utmost gratitude to his family who has given continuous moral support and encouragement to the author. Chapter 4. Graphene-based TiO 2 nanocomposites for enhanced visible light degradation of organic dye and antibacterial effect of Escherichia coli 53 4.

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supporting

confidence: 90%

Section: Mechanical Testmentioning

confidence: 99%

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Photocatalytic cementitious material for self-cleaning and anti-microbial application

Hamdany¹

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“…Because of its excellent tensile performance, ECC can be used in strengthening unreinforced masonry walls [16,[21][22][23], reducing the extensive amount of transverse reinforcements in beam-column joints of rigid-framed bridges, enhancing the joint seismic resistance and reducing reinforcement congestion and construction complexity [24][25][26][27]. ECC can also be used in hydraulic structures for its good durability [2,16,28], highway engineering for its ability of withstanding large deformations from heavy loading and temperature variations [29], in hot arid coastal climatic condition structures [30], in lightweight building facade and pavement [31], in pavement overlay to extend the service life [32] and in impact and blast resistant protective panels [16]. The wide range of applications of ECC demonstrates that incorporating ECC can significantly improve the performance of structures and reduce the associated life cycle cost.…”

Section: Introductionmentioning

confidence: 99%

Flexural behavior of ECC-concrete composite beams reinforced with steel bars

Ashour

et al. 2018

Construction and Building Materials

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This paper presents analytical technique and simplified formulas for the calculations of cracking, yield and ultimate moments of different cases as well as deflections of ECC-concrete composite beams reinforced with steel bars. The technique is based on the simplified constitutive models of materials, strain compatibility, perforce bond of materials and equilibrium of internal forces and moment. Experimental testing of eleven ECC-concrete composite beams reinforced with steel bars is also presented. All beams tested had the same geometrical dimensions but different steel reinforcement strength and ECC thickness. The proposed formulas showed good agreement with the experimental results of various moment values and deflections. A parametric analysis shows that yield and ultimate moments increase with the increase of concrete strength in case of compression failure but, essentially, remain unchanged in case of tensile failure. With increasing the tensile resistance, for example by increasing ECC height replacement ratio, reinforcement ratio, strength of steel reinforcement and ECC, ultimate curvature and energy dissipation increase in case of tensile failure and decrease in case of compressive failure. On the other hand, ductility and energy dissipation ratio decrease with the increase of reinforcement ratio and strength, but, essentially, remain unchanged with increasing the height replacement ratio and strength of ECC.

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“…Wettability describes the spreading of a liquid on a surface, and is one of the important characteristics of a solid surface [1]. Wettability has been widely used in many industries, such as surface self-cleaning [2][3][4], antibacterial products [5], fluid drag reduction [6], inkjet printing [7,8], anti-fouling products [9], anti-adhesives [10], and environmental applications [11]. Moreover, surface wettability plays an important role in boiling and condensation, such as in homogeneous nucleation, vapor condensation, and bubble growth [12,13].…”

Section: Introductionmentioning

confidence: 99%

The Wettability and Numerical Model of Different Silicon Microstructural Surfaces

Han

Yang²,

et al. 2019

Applied Sciences

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Wettability is an important property of solid surfaces and is widely used in many industries. In this work, seven silicon microstructure surfaces were made by plasma immersion ion implantation (PIII) technology. The experimental contact angles and theoretical contact angles of various surfaces were compared, which indicated that the classical theory had great limitations in predicting the static contact angles of complex structures. A parameterized microstructure surface was established by computational fluid dynamics (CFD) with a volume-of-fluid (VOF) model to analyze the reasons for the differences between experimental and theoretical contact angles. Comparing the results of experiments and simulations, it was found that the VOF model can simulate the contact angle of these surfaces very well. The geometrical models of the different microstructures were simplified, and waveforms of the surfaces were obtained.

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Self-cleaning engineered cementitious composites

Cited by 91 publications

References 23 publications

Photocatalytic cementitious material for self-cleaning and anti-microbial application

Photocatalytic cementitious material for self-cleaning and anti-microbial application

Flexural behavior of ECC-concrete composite beams reinforced with steel bars

The Wettability and Numerical Model of Different Silicon Microstructural Surfaces

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