نتایج جستجو برای: engineered cementitious composite

تعداد نتایج: 162608  

2010
Asami YAMAMOTO Ken WATANABE Victor C. LI Junichiro NIWA

This paper describes the results of self-healing behavior in early-age Engineered Cementitious Composites (ECC). Uniaxially pre-loaded ECC with tensile strain of 0.3 or 0.5% were subjected to different number of wet-dry cycles. Then, resonant frequency test and reloading test were carried out to assess the recovery rate as a function of the number of wet-dry cycles. These two tests indicated di...

2001
Victor C. Li

Engineered Cementitious Composite (ECC) is a special type of HPFRCC designed using micromechanics concepts which take into account the mechanical interactions between fiber, matrix and interface in deformation processes under load. While the properties of ECC have been extensively investigated, the interaction between ECC and steel reinforcement has not been studied. This interaction is importa...

2011
Shunzhi Qian Victor C. Li

In this paper, the inelastic damage process in Engineered Cementitious Composites (ECC) in the high stress concentration zone adjacent to the head of an embedded anchor under tensile load was examined experimentally and numerically. An FEM model together with a tensile strain-hardening material model of ECC was developed to simulate the damage process leading to final failure. Experimental obse...

Journal: :Buildings 2022

Engineered cementitious composite (ECC) is a high-performance material with greater shear deformation and strength than normal concrete, which has been proposed for use as component in structures. This study modeled three frames, pure reinforced concrete (RC) frame, an RC frame short columns ECC columns, using the incremental dynamic analysis (IDA) method to evaluate contribution of structural ...

2015
Jaecheol Ahn Takafumi Noguchi Ryoma Kitagaki

Efficient maintenance and upgrading of a building during its lifecycle are difficult because a cementitious finish uses materials and parts with low disassembly properties. Additionally, the reuse and recycling processes during building demolition also present numerous problems from the perspective of environmental technology. In this study, an induction heating (IH) method was used to disassem...

2016
Yong-Soo Lee Jae-Suk Ryou

Various self-healing methods for concrete, such as the use of supplementary cementitious materials, adhesive agents, mineral admixtures, and bacteria, have been suggested to date, and each of these has merits and demerits. Among these, however, the use of cementitious materials may be appropriate due to their good healing efficiency, low cost, and compatibility with the cement matrix. In this s...

Journal: :Frontiers in Built Environment 2023

To improve the economic benefits of engineered cementitious composites and control repair cycle, materials were designed, with key components mixture being low-cost polypropylene (PP) fibers fast-setting sulfoaluminate cement. The effects water/binder ratio, fiber content, aggregate particle size on flowability, mechanical properties, toughness fiber-reinforced composite (PP-SACC) explored. Bas...

Journal: :Cement 2022

The mechanical properties of Ultra High Performance Fibre Reinforced Cementitious Composite (UHPFRCC) is basically influenced by the type fibres and reactive binders used. Fibres primarily influence ductility whereas compressive strength UHPFRCC. Among commonly used binders, Ground Granulated Blast Furnace Slag (SL) with its vitreous nature has ability influencing both This study discussed micr...

Journal: :Engineering reports 2021

Structural health monitoring (SHM) using self-sensing cement-based materials has been reported before, where nano-fillers have incorporated in cementitious matrices as functional sensing elements. A percolation threshold is always required order for conductive modified concrete to be useful SHM. Nonetheless, the best pressure/strain sensitivity results achieved any matrix are <0.01 MPa−1. In th...

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