Developments in nanomaterial technology have generated a strong research interest the construction industry aiming at enhancing properties of concrete. Many studies explored use engineered such as nano-silica, carbon nanotubes (CNT) and nanofibers cementitious composites. Recently, focused on Graphene Oxide (GO). is single atomic layer thick two-dimensional form graphite GO oxidized graphene wh...

Healable crack widths of cementitious composites are still at micro scale currently, even after specific self-healing agents like bacteria incorporated. To enlarge the size healable cracks to macro (> 1 mm), in-situ gelation strategy was adopted develop self-sealing concrete herein. This achieved by encapsulating sodium alginate which could be released then react with calcium ions generate h...

Mechanical characterization of Portland cement with hollow glass microspheres two different crushing strengths, 500 (FM) and 10,000 psi (3 M), was carried out to determine both quasi-static dynamic responses the cementitious composites. In tests, time resolved high speed camera photos deforming specimens revealed stress levels at which incipient damage occurred. The split-Hopkinson pressure bar...

The pseudo strain-hardening behavior of fiber reinforced engineered cementitious composites (ECC) is a desirable characteristic for it to act as a substitute for concrete to suppress brittle failure. The use of ECC in the industry is, however, limited by its high cost. To achieve higher cost/performance ratio, ECC can be strategically applied in parts of a structure that is under relatively hig...

The lack of durability in concrete repairs induces repair failures in field and endless “repair of repairs”. Most often drying shrinkage of “new” repair material restrained by “old” concrete substrate causes cracking in the repair material, combined with interface delamination between the repair and the concrete substrate, which may also introduce chlorides, oxygen, moisture, alkali or sulphate...

Cracking is one of the most severe problems facing the concrete industry worldwide. Of critical importance is the drastic decline of durability associated with these cracks, and the resulting cost of repair or replacement of concrete structures. This research examines the effect of crack width and crack frequency upon the durability of reinforced mortar, quantified by water permeability. Crack ...

Engineered Cementitious Composites (ECC) is an emerging cementitious composite material with ultra-high ductility. However, its higher cement dosage limits greenness and leads to concerns drying shrinkage. In this research, ECC utilizing limestone calcined clay (LC3) calcium sulphoaluminate (CSA) investigated, focusing on minimizing the material's embodied carbon while enhancing durability intr...