Abstract
Engineered cementitious composites (ECCs) suffer from high shrinkage and low early strength due to large dosage of cementitious materials and slow hydration of fly ash. This study aims to improve compressive properties and reduce drying shrinkage of ECC using ceramic wastes and hydrothermal curing. Experimental results have indicated that ceramic polishing powder (CPP) and recycled ceramic sand (RCS) exert opposite effect on the compressive strength of ECC. Hydrothermal-cured ECC enhances elasticity modulus and compressive strength and reduces later drying shrinkage as compared with that under standard curing. A CPP dosage of 35% and a hydrothermal curing regime with a temperature of 70°C and age of 7 days are recommended for the engineering application of ECC.
Highlights
Compared with common cement-based materials, the engineered cementitious composite (ECC) has excellent ductility, impact strength, and fracture resistance (Li, 2003)
The existence of fibers prevented specimens from peeling off. This is linked to the bridging effect of fibers which limits the development of cracks and improves the ductility of ECC (Lin et al, 2019)
The incorporation of ceramic waste and the hydrothermal curing resulted in little change on the failure mode of ECC
Summary
Compared with common cement-based materials, the engineered cementitious composite (ECC) has excellent ductility, impact strength, and fracture resistance (Li, 2003). It exhibits strain-hardening and multiple cracking behaviors with ultimate strain exceeding 3% under uniaxial tension (Li et al, 2001). Because of these significant advantages, ECC has become increasingly popular in the field of civil engineering. Its 28-day shrinkage strain can reach up to 1,200–1,800 με (Gao et al, 2018) Such large shrinkage causes high tensile stress and even cracks in ECC, which degrades the stiffness and resistance to penetration. The above-mentioned shortcomings hinder the application of ECC in engineering
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
