Ultra-High-Performance Fiber-Reinforced Concrete: Applications

Abstract

UHPC is a type of cement-based composite used in new construction and/or rehabilitation of existing buildings to extend service life. It is a novel composite material that can serve as an alternative to concrete construction in hostile climates. Following decades of study and production, a diverse variety of commercial UHPC compositions are now available globally to meet the rising number of applicants and demand for high-quality building materials. Although UHPC offers major benefits over normal concrete, its utilization is restricted due to restrictive design rules and exorbitant costs. As a result, a thorough examination of the durability properties of UHPC is required to give important information for material testing requirements and processes, as well as to broaden its practical uses. This report is aimed at increasing basic understanding of UHPC and supporting more UHPC research and applications.

Ultra-High-Performance Fiber-Reinforced Concrete: Fresh Properties

“…ˑThe ˑquantity ˑof ˑmicromechanical ˑfeatures ˑof ˑconcrete, ˑsuch ˑas ˑinner ˑcracking, ˑdegradation, ˑhoneycombing, ˑand ˑmaterial ˑcomposition ˑdifferences, ˑcan ˑbe ˑused ˑto ˑassess ˑhomogeneity ˑin ˑcement-based composites. The addition of the W/C ratio, which ˑresults ˑin ˑa ˑsignificant ˑvolume of ˑpores ˑinside ˑthe ˑconcrete, ˑcan ˑimprove ˑthe ˑworkability ˑof ˑsteel ˑfiber-reinforced ˑconcrete ˑduring ˑcasting [71][72][73][74][75][76][77]. ˑExtra ˑwater ˑin ˑthe ˑfresh ˑstage ˑof ˑconcrete ˑcan ˑmove ˑover ˑthe ˑsmooth ˑsurface ˑof ˑsteel ˑfibers, ˑincreasing ˑthe production of longish air spaces following concrete hardening [78] [79-82].…”

“…ˑAlready ˑin ˑ2002, ˑthe ˑAssociation ˑFrançaise de Génie Civil (AFGC) issued design recommendations ˑfor ˑUHPC ˑ [22]. ˑIn ˑ2016, ˑa ˑversion ˑof ˑthis ˑwas ˑadopted ˑin ˑFrance ˑas ˑa ˑnational ˑappendix ˑ [23][24][25][26][27][28] ˑto ˑthe ˑordinary ˑconcrete design" code (Eurocode 2). Generally these different properties ˑof ˑfiber ˑyield ˑdifferent ˑeffects ˑwhen ˑadded ˑto ˑtheir ˑrespective ˑconcretes.…”

Ultra-high-performance fiber-reinforced concrete (UHPFRC): A mini-review of the challenges

“…ˑTo ˑbreak ˑdown ˑthe ˑbarriers, ˑit ˑis ˑmore ˑvital ˑto ˑtap ˑinto ˑthe ˑdesign ˑof ˑsustainable ˑUHPC ˑ(the ˑfoundation ˑfor ˑyielding ˑsustainable ˑUHPC ˑthat ˑmatches ˑspecifiable ˑfeatures ˑfor ˑa ˑspecific ˑapplication) ˑthan ˑto ˑreplicate" ˑthe ˑold ˑmixing ˑproportions. ˑHowever, ˑresearch ˑon ˑthe ˑdesign ˑof ˑsustainable ˑUHPC is limited [22][23][24][25][26][27].…”

“…ˑAs ˑa ˑresult, ˑresearch ˑon ˑalternative ˑSCMs ˑis ˑin ˑhigh ˑdemand; ˑ(ii) ˑConsidering ˑthe conflicting requirements of those UHPC performances, ˑintegration ˑof two or more ˑmixture ˑdesign ˑmethods ˑto ˑexploit ˑthe ˑadvantages ˑof ˑeach ˑmethod ˑby ˑmeeting ˑmultiple ˑUHPC ˑrequirements, ˑresulting ˑin ˑbetter ˑUHPC ˑmixture" ˑproportion. Some ˑstatistical ˑmethods, ˑ"such ˑas ˑcentral ˑcomposite ˑdesign, ˑappear ˑto ˑbe ˑadvantageous ˑfor ˑgetting ˑeffectively ˑsuitable ˑmixing ˑwhen ˑcreating ˑmortar ˑmixes ˑ [13,[28][29][30].…”

“…ˑOngoing ˑstudy ˑand ˑinvestigation ˑefforts ˑare ˑfilling ˑknowledge ˑgaps ˑin ˑorder ˑto ˑcommence ˑinnovative, ˑaffordable, ˑsustainable, ˑviable, ˑand ˑeconomical ˑUHPC ˑin ˑthe ˑfuture, ˑwhich ˑwill ˑhave ˑa ˑsignificant ˑimpact ˑon its acceptability. This paper provides a general introduction to UHPC as ˑwell ˑas ˑthe ˑmost ˑup-to-date ˑinformation ˑon ˑits ˑdefinitions, ˑdevelopment, ˑapplications, ˑand ˑproblems ˑ [16][17][18][19][20][21].…”