Mechanical properties of fiber-reinforced high-performance concrete incorporating pyrogenic nanosilica with different surface areas

Reusing granite sawing waste in self‐compacting concrete with polypropylene fiber at low‐volume fractions

“…The inclusion of Polypropylene fibers at 0.05, 0.1, and 0.15% without GSW changes the compressive strength upto −1.36, +2.79, and 1.88%, respectively. The PP fiber when used alone slightly increases the compressive strength as reported by many researchers . The increase in strength is very meager.…”

“…Various other mineral admixtures have also been used as fillers in SCC. Strength and durability studies on Polypropylene fibers in SCC have been carried out by some authors and they report that the PP fibers have very good residual compressive strength and postcracking strength …”

Mechanical Properties of Fiber-Reinforced Concrete Using Composite Binders

“…Combination of microsilica and nanosilica (colloidal silica) is considered to design high-strength self-consolidating concrete [1,20,21]. The results also revealed that 7% substitution of microsilica showed the same effect as 2% nanosilica replacement [1,22,23].…”

“…One of the ways to improve the properties of concrete and to reduce permeability parameters is the use of highly active additives of various compositions and genesis at micro-and nanosized levels, which contribute to the optimization of structure formation processes by initiating the formation of hydrated compounds. The efficiency of use of the active mineral additives of nanostructured silicamodifier composition has been proven in topics [1,20,21,23]. The possibility of the permeability reduction of the concrete by mechanically grinding the composite binders components was also studied previously [17].…”

بررسی تأثیر کاربرد نانوذرات سیلیس پایروژنیک بر مقاومت بتن توانمند در برابر خوردگی میل‌گردهای مدفون در بتن

“…; |=yC@Uv =@ Ovtv=wD |=yuD@ |Q=Wi Ctw=kt Q@ T}r}UwQm}t s}kDUt [1714] 'xDiQoCQwY C=k}kLD T=U= Q@ "OW |UQQ@ 0 4 w 0 25 [16w14] "CU= ? ; |Q=Oyov |q=@ C}Y=N =@ pS l} O=H}= pY=L =@ Ovtv=wD uD@`wv xU OQmrta [16] 'CiQo CQwY u= Q=mty w u}t=@ \UwD xm QO T}r}Uwv=v uwO@ w =@ p=mU=B=ot 80 w 70 '60 |xYNWt |=yCtw=kt wr=N \UwD xm |k}kLD QO "OW |UQQ@ M} w ?wP hrDNt |=yxNQJ =@ \=@DQ= Q@ l}vSwQ}=B T}r}Uwv=v`=wv= hrDNt |=yOYQO Q}F -=D 'CiQo CQwY u= Q=mty w '|Qo}O |xar=]t QO w [18] OW |UQQ@ Ovtv=wD |=yuD@ Ctw=kt w s=wO '|}= Q=m xOW |UQQ@ T}r}Uwv=v pt=W Ovtv=wD |=yuD@ Q@ ur}B wQB|rB w |Oqwi h=}r= Q}F -=D [19] "CU= hrDNt |xS}w K]U =@ l}vSwQ}=B T}r}Uwv=v`wv wO OQ@Q=m Q}F -=D 'j}kLD u}= QO Ovtv=wD uD@ QO Q=DN=UR}Q w |m}v=mt Ctw=kt Q_v R= 1 50 w 0 75 OYQO wO QO Ovtv=wD uD@ Ctw=kt [20] [20] "Ow@ Oy=wN QDtm Q=mOwN s=tD umWuD@ lH =@ |Q=Wi Ctw=kt V}=tR; 'j}kLD u}= QO Ctw=kt V}=tR; [23] 'BS 1881 116 OQ=Ov=DU= T=U= Q@ ELE ADR T=U= Q@ Q} wm |=tvyQ CmQW CN=U CRM 2 2 x=oDUO =@ |m} QDmr= Q@ TICO x=oDUO =@ l}vwU=QDrw= Tr=B CaQU V}=tR; w [24] ASTM C1876 "CU= xDiQ}PB CQwY [25] [26] "CU= R=}v QDp=oJ 0 75QDtmOYQO'6pmW0 25C@UvxS}wx@ w b C@Uv Vy=m =@ OvJ Qy u}= "O=O u=Wv 1 5 QDW}@ |v} Ro}=H x@ C@Uv = Q |QDy@ OQmrta T}r}U wv=v xO=O C@Uv w b C@Uv Vy=m =@ uw}U= QO}y uDi=} Vy=m |xHQO x@ Ov=wD|t xH}Dv O}UmwQO}y s}Urm |=yp=DU}QmO}rwDMQv'O@=}|tVy=m w b C@Uv xm |v=tR [26] "OwW |xQwO l} QO w QDtm w b C@Uv l} QO 'u}= Q@=v@ "O@=}|t Vy=m (Ca(OH) 2 ) C= QPwv=v=@Vvm=w|= Q@ (Ca(OH) 2 )O}UmwQO}ys}Urm|QDtmQ=Okt'xS}w|Qw;pta |=y\}Lt QO T}r}U C= QPwv=v |vqwRwB C}r=ai 'xH}Dv QO "CU= OwHwt T}r}U C= QPwv=vO=a@= Vy=m "OwW|tQDW}@C= QPwv=v|=yxNwrmQ}F -=D w O@=}|t Vy=m |v=t}U C@Uv QO'u}= Q@=v@ "OyO|tV}= Ri= = QnQR@T}r}U|=yxNwrmp}mWDp=tDL='T}r}U "OvyO|tu=WvQDR}QC= QPx@C@Uv|QDy@OQmrta'QDoQR@T}r}U|wv=vC= QP'QDtm w b u}= '|v=t}U |x}=B |=y\wrNt QO T}r}U C= QPwv=v |Q}oQ=mx@ =@ |rm Qw]x@ uOw@ = Q=O '=yOw@y@ u}= u}@ QO [27w5] "OvQ=Po|t V}=tv x@ = Q |}xv=oQ=yJ OQmrta C= QP |=ypwmrwt =@ T}r}U C= QPwv=v "O};|t ?=UL x@ xDmv u} QDsyt q=@ |vqwRwB C}r=ai [28] "Ovvm|t O}rwD = Q 7 [31] u= Q=mty w |Qk=@ j}kLD =@ G}=Dv u}= "CU= Q=oR=U 'Ovm|t u=}@ = Q QDR} Q T}r}U C= [31] "OwW \@DQt u= Q=mty w |Qk=@ |xar=]t j@] |}xQiL pwrLt l} (NS200) %QDCWQO T}r}Uwv=v 1 5 =@ Ovtv=wD uD@ Q=DN=UR}Q "10 pmW "1 = Ca(OH)2; 2 = C S HCU=xOWp}mWDp=oJQ=}U@Q=DN=UR} Q [20] 'ACI 222R 01 =@ j@=]t "CU= sm '…”