A review: Self-healing in cementitious materials and engineered cementitious composite as a self-healing material

2012 ◽  
Vol 28 (1) ◽  
pp. 571-583 ◽  
Author(s):  
Min Wu ◽  
Björn Johannesson ◽  
Mette Geiker
Author(s):  
Wesam Salah Alaloul ◽  
Muhammad Ali Musarat ◽  
Sani Haruna ◽  
Bassam Tayeh ◽  
Muhammad Nurzahin Bin Norizan

This research has been conducted where the focus is on the chemical attack towards the Engineered Cementitious Composite (ECC) containing a high volume of the crumb rubber in terms of durability, behaviour, and comparison with conventional concrete. Two variables have been considered in developing rubberized ECC mixtures, i.e. the amount of crumb rubber as a replacement to fine aggregate by volume of 0-30% and PVA fibres by volume of 0-2% to cementitious materials. The resistance properties of ECC incorporating crumb rubber were investigated for 13 different variable combinations developed by Response Surface Methodology (RSM). The experimental results revealed that the presence of crumb rubber in the ECC matrix enhanced the resistance of the ECC in both acidic and sulphate environments. It was also revealed that by incorporating 15% of crumb rubber, the loss of compressive strength significantly reduced from 38% to 15%


2016 ◽  
Vol 860 ◽  
pp. 125-134 ◽  
Author(s):  
Abla Krouma ◽  
Zubair Imam Syed

Engineered Cementitious Composite (ECC) is a material with high ductility, tensile strength and self-healing more than the standard concrete. Applications of ECC are beneficial due to its long life cycle, high strength, low cost in the long-term, low maintenance and environmentally friendly nature. Properties and hardened behavior of ECC highlights that ECC has a tight crack width development, which increases its ability to resist long-term effects of hot, frost and humid weather. Additionally, it results low water permeability coefficient and high steel corrosion resistance compared to other common alternative materials. One of the promising areas of application for ECC is in highway structures, especially highway bridges. Highway structures suffer constantly from adverse environmental loads and often require frequent repairing or replacing due to cracks; expansion; water and chlorides effects which cause steel corrosion or the slope between the pavement, slab and the support at the end of a bridge. Detailed review on different properties and characteristics of ECC and the current applications of ECC clearly highlights the motivation to enhance the use of ECC for bridge construction. In addition, ECC can be introduced in jointless bridges by putting an ECC link slab instead of the expandable mechanical joint.


2021 ◽  
Vol 1197 (1) ◽  
pp. 012085
Author(s):  
Shahjee Vishal ◽  
S.P. Challagulla

Abstract The present work majorly focused on the effect of Polyvinyl Alcohol fibers (PVA) in engineered cementitious composite concrete. However, PVA fibers are used as added to the ECC concrete with propotion of 0% to 2% of weight to cementitious materials. All the concrete samples are prepared with mix proportion of 1 cement: 1.1 silica fume: 0.36 ratio of sand/binder: 0.30 ratio of water/binder: 0.01 water reducer. whereas compressive, flexural, split tensile, water absorption and rapid chloride permeability tests are evaluated in order find out the performance of ECC with addition of PVA fibers. Thus, the results, ECC concrete has better mechanical and durability performance than conventional concrete and also its high early strength. From this study concludes that upto 1.5% of PVA fibers can be used in the ECC concrete, which has 60.12MPa and 18% of strength increment than the reference mix.


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