Concrete is one of civilization’s most durable building materials. The ancient Romans used concrete 2,000 years ago to make structures that still stand today. People now use the material’s modern versionaggregates such as sand or gravel held together by a cement and water pastemore than all other construction materials combined. The world produced 4.3 billion metric tons of cement in 2014, an...

This paper investigates the evolution of self-healing properties ultra-high performance concrete exposed to aggressive environments. Double edge wedge splitting UHPC specimens with 0.8% crystalline admixture and 1.5% steel fibre by volume have been first pre-cracked up a average 0.30 mm crack opening displacement (COD) obtained two linear variable differential transformers attached both sides s...

The inclusion of superabsorbent polymers (SAPs) has become increasingly attractive to promote the self-healing ability cementitious materials, thereby reducing costs related manual repairs. To advocate use these additives within large-scale constructions, an assessment is needed ensure safety infrastructures. A non-destructive evaluation method was found in adoption ultrasonic monitoring. Thank...

in most cases, fiber reinforced self-compacting concrete (frscc) contains only one type of fiber. the use of two or more types of fibers in a suitable combination may potentially not only improve the overal properties of self-compacting concrete, but may also result in performance synergie. the combining of fibers, often called hybridization, is investigated in this paper for a cimentetious mat...

This paper analyzes the autogenous self-healing capacity of early-age Ultra-High-Performance Fiber-Reinforced concretes (UHPFRCs) by measuring crack closure and possible mechanical recovery on healed specimens. The main parameters considered in this research were healing exposure conditions (humidity chamber, immersion tap water, seawater heat curing) precracking levels (microcracks macrocracks...