89 week consideration during paving 2 وضع التوافق1

7/18/2019 89 Week Consideration During Paving 2 1وضع التوافق

http://slidepdf.com/reader/full/89-week-consideration-during-paving-2-1 1/24

Prof. Dr. Eng Shafik Jendia

Consideration During Laying and

Compaction of Asphalt Mixture

Lecture

8. - 9. Week 26. 10 - 8. 11.

2013


References

http://www.hincol.com/common-applications.php

http://www.aema.org/index.php?option=com_content&

view=article&id=79:tackcoat&catid=7&Itemid=25

http://www.asphaltinstitute.org/public/engineering/cons

truction/construction-faqs.dot









!


Consideration During Laying and Compaction of

Asphalt Mixture

Introduction

Preparing before laying (paving)

Transport of Asphalt Mix

Evaluation of Asphalt Mix before Paving

Paving of Asphalt Mix

Compaction of Asphalt Mix

Joints

Discussion


Introduction

"#$" %#&' (&)*,-. (,/0 1234+ 52&627 9)*,-$" :&*;*+ #&'+" <&3/)+" 0=)>& ?

2@A B0@ 2@@C6 "D+ ED&,@)+" 2@FG 5"0H/I J2@A 127 <"# 23 94"0)6?" 03>+" B#3

K'"H+" (&0H04+" L2:2&)M?"H :H0N+" O>= PH2@) %0H04 P/,+" "DA 96

(&+2)+" 2&24Q+" RH/;= J+DH E9)*,-$" :&*;+" J3#H #06 P=I 2S)2T"03:

U*,-+" (Q=:+" V:- #"#T.WIH3+" 96 :&*;+" <X)-"H PQ@

WIH3+" 96 9)*,-$" :&*;+" <&&Q)

9)*,-$" :&*;+" #06

9)*,-$" :&*;+" J3#

LX/H+"



"


Preparing before laying (paving) !"#%'( )*+,./ 0"13 41'( "#%'( 5,+2 78 9(:/; <= )>= 9<@"B'(7 D<EFG2 D8 )IJC; 4K=7 L,MN.O'( 9QST$ U7QVWX'( Z\#] ^:_`-:a'( ,1.Tc3d(

eQP8 ,1.T3; "#& 78 -<@g h)38 "#&.

Aggregate base course

(&)*,-. (Q=:

(&H/M (Q=:

- Asphalt binder course

- Asphalt base course



Base course #$%&' #()*

%HI Y&6 06"H))H 52&H)-3H L2'H3)+" 13 52&+2; V:-+" 1H7& 1G :0)N& <&3/)*+ 52Q=: (&40>+"H (&+H:+" PH&3+" Y&6 1H7) 1GH (4H0,3+" P3M)+"

L2,/"H3+"H 9-#@S+".

1H7) 1G K'& (&H/M+" (Q=:+"H (&)*,-Z" (Q=:+" 1&= :=0 %HI [*;+H (/2;H 23S4>== 12)Q=:+" P;"#)) U)M %\02= (&H/M+" L2=&=M+" ]H^0

%0&=7+" (&+H:+" PH&3+" 2S&6 1H7) 9)+" [:2@3+" 96.

(&H/M+" (Q=:+" V:- _0 <)& 237L2=703 B#MC=1&3H)=+"`D+"H 2@A U3-&

(Prime Coat)



+


Use of a Prime CoatPurpose of the use of cut back bitumen or emulsions on

aggregate base course (Prime Coat)

, To coat and bond loose material

particles on the surface of the

base.

, To harden or toughen the base

surface to provide a work platform

for construction equipment

, To plug capillary voids in the basecourse surface to prevent migration

of moisture.

, To provide adhesion between the

base course and the succeeding

course



(&)*,-. (Q=:- Asphalt binder course

- Asphalt base course i"#& jklnC oqAQ? Drst u,1.T3; "#& v./ 41.T3d( L,.O'( 9Qx :>/)Wearing Course(

y"#& vz./)Binder Course( {"#& 78)Binder Course( |"#& v}./) Asphalt

Base Course(4.- )C ^)/(QC ~a-:

, % ! .' C)1'( x) # >'(,)=Q, %7 &)$Q+G'(7 '),B'(7 )R)aB'( Z=)>C *)/)T2R( ^)/(QC,v.T ! '( ,1.T3+( "#%'( 4x QT , '(7 *) . TO>B'( 5# 0 1$ % ! '( -< ! 2.

"#%& ()&*

+,-./012&




-


(&)*,-. (Q=:- Asphalt binder course

- Asphalt base course, 1 ag Q#t8 o]<1- 3 ,g u~3)>B'( 5R:1'( )6 41.T3d( L,.O'( R),1P( -< ! 1'( "#& 7 B3 v./ )>= L,.O.' 4#,#g.

,ZB/ 41.gQC 4x ^:-:a'( "#%'(7 -< ! 1'( "#& 9 C Zt 2)B2; 9 ,1.@T>C.

,j(:,b j)GC9 -< ! 1'( "#& 7 C9.

, B-:"'( "#%'( 9 ,$ "A; ^<] < .P)v.T ! '(( "#%'( >Q$ ^:-:a'(7 "A; ^9)B$ B-:"'()Tack Coat(? 2)>'( &)X @ '( D<G- ;8 3 , , $ u

BC "#%'( % EF 3 j) HI ,% @ C KL! ?)a1C ^R< N @$ j) PQ /R<C 9ST G'7 j)G,B VW 3 >Q YZ '( 9 \ .Btr$ v.T ! '(.



(&)*,-. (Q=:- Asphalt layer

- Asphalt base course

8) $ *) G'( 9 ,C<1$ 78 ,?<,2)t , . C)g *)#. , 1 ! C aQ @ '( (b +' 2:O1 ! - R(: def "B$ % hij! '( v lmn ./ ^9R) pqr $ >Q tuv 2 4 xyz 1'(70.3 a0.5Q |}~ 1B.' 2(Qb< !" .,t

:g(<'( 0$QB'(.

^9) $ B'( < & @' [< 0 TC v./ 7 'b t7 >Q'( : 0 $ % ! '( x) # ? v./ # x) , B.' R7QB') () $ *) +, #tQB.' B ./ ! - ;8 ~ 12 a- 49(< 45 , '( U< 78 ]7 ~ :; >a27 " => Ak'(

" @ Ak'( ^9) B B.' 2) D 1'( p) F Ta'( 9 C :tr1'( : 0 $7 u \ ,./)< H @.'( Q,mr J 2 3 L ,gp)Ta')$ 9(9M -(^:-:a'( "#%.' 41.T3d( L,.O'( 9QT-.




.


The purpose of a Tack Coat

Tack Coat (also known as bond coat) is a light application of

cutback bitumen or emulsion between hot mix asphalt layers

designed to create a strong adhesive bond coat

To ensure a bond between the succeeding layers

of a pavement.

The use of Cut Back bitumen or Emulsions on AsphaltLayer = Tack Coat

Heavier applications

may be used aroundpatches where it also

functions as a seal

coat


The purpose of a Tack Coat

Without tack coat the asphalt layers in a road way may

separate which reduces the structural integrity of the

road and may also allow water to penetrate the structure

The use of Cut Back bitumen or Emulsions on Asphalt

Layer = Tack Coat



/


Asphalt Mix Transport 01$2 #3&4 56789 :%4;79< 57 =>? @A @BC3DE< *$CF9< 5%G$ 5I J2$ K7DB L 04%&) M<4A%B7 NO%79<

:&49< P6Q2 :%O%))f in isher (

014<%9< R6>'6S9< 11T 5%G$ 5I%

U:&49< #T4D) M6*)B47 NO%7C9 #($O19< #A4;79< JC*B$ <VW 5XA =$CT% *$CFC9 #CO6>9< R6>'6S9< #9%7'% 11;9

NO%79< Y9? @BC3D[<.


Width (w) = 8.0 m

Thickness (d) = 5.0 cm

Length (l) = 200.0 m

Bulk density (\) = 2,35 g/cm3

Mass of asphalt mix =

w x d x l x \80 x 0.05 x 200 x 2.35

= 188 ton

Asphalt Mix Transport



]


Field Evaluation of Asphalt Mixa) Asphalt mix temperature

LowestAllowable

Asphalt Temp.

(oC)

Field (paving)

HighestAllowable

Asphalt Temp.

(oC)

Plant (delivery)

Bitumen Type(Penetration 1/10

mm)

140190Bitumen 30 / 45

B45

130180Bitumen 50 / 70

B65

130180Bitumen 70/100

B80

120170Bitumen 160 / 220

B 200


Field Evaluation of Asphalt Mix

b) Visual Evaluation

,o,TP D) 0 B.$ •< , @C ! ?)a1C ^R<@$ D<.'( 9<38 D<G-, % ! #>C ,&7QOC C<t ZGY v./ >g)X'( 4x 0"-, T,TP ^R<@$ R)O$ \ >C 30 #>-,*)?<GB'( [)@T?( \ ,./ Q+ # - ;)segregation( &)>m8 oAQ'( R)+b -7)g 4x \@ -QT2

1- Good Asphalt Mix



^


Field Evaluation of Asphalt Mixb) Visual Evaluation

, >g)X'( 4x '9<b7 &)>m8 ",]R R<X] \, %3 v./ D<G1-, R)+b -7)g 4x \@ -QT2 &)>m8 R)O$ 4) 0 #?( \ >C O gk- ; oAQ'(

2- Rejected Cold Mix

Mix must not be

used


Field Evaluation of Asphalt Mix

b) Visual Evaluation3- Damaged Hot Mix

,D<.'( QTA8 D)P9 \ >C 30 #>-,4>#'( D<.'( v'; \ ?<' Z,B-,*)#,# , '( 9 ,$ < Ak1'( ^<"'7 7 3)B1.' j(:])x j)GGTC D<G-

9 G'7 uoAQ'( 4x \ C(:O13( 2:/7 L,.O'( Q xR ~a- \ ,./7 -< TU @ , '( *) WX "#%'( 4 Z[ x \ C(:O1 ] 3( 9 a GB-))< cd @g L, fg .Ot(78

29Q'( 4x.

Mix must not be used



_



Home work

-1 Compare between cutback bitumen and emulsions

Regarding: content, use and application fields

2- Compare between prime coat and tack coat

Regarding: definition, material, application fields

3- U-tubes about

- Prime coat

- Tack coat

- Seal coat

- Asphalt mix plants

- Asphalt mix evaluation in field


Paving of Asphalt Mix1) Paving with Finisher

:&49< P6Q2) :&49<

, hQT- 41'( -7) , '( x) # ?7 \ 6(M b8 0,Bb ,gkA 9 C :tr1'(7 oAQ'( R)+b Q, ., 2 9 ,O ! 27 41.T3d( L,.O'( )+,x) ij x l n(2(:O13;( Z#] R)+a'( ~ , 3 o<'.

,7 x 78 ~,tQ1$ 7 '67 oAQ'( "#& aQ/ 0C ~3)>1,' R)+a'( 4x ~ ,! '( o<' L# /

\ $ A)O'( ,x) /+( &(M bd(. , q "#%'( 7 B s 3 9 , u , 0 1' 7 '67 % ! '( 9 / ~ ,! '( o<' U)T2R( :-: , 2)a7Q w TB'( •< y ! >B'((

R)+b D8 3 ,g u7 C:'( Q,mr2 ^)/(QC 0C)finisher (j) { . -8 ) } B?;7 L,.O'( 9QT$ L"x 2<"- ; [9) • 0 - j) ! ,'78 j) # GC9 M a >-85 %)-92 %(46) % +>'( 7 C: ' '( 9 ) C.o< + ' U) - T2R( D./ x \ 1 ,./7

v.T ! '( "#%'( %3 9 / R)+a'( ~ , 3) L,.O'( )+,./ 9QT,3 41'((v./ o]<1-:

,R)+a' 4'7d( 7 C:'()finisher (

,Zg(:B'( 2(:O13)$ 46)+>'( 7 C:'()rollers(u!#$&() *+,() .02 3' 507&() 9;<,>()@ <0A() CDE )!F G&>I; JLM.




Paving of Asphalt Mix1) Paving with Finisher

b/0+" \2S'= b/0+"

,R) 345678 +b /Q :;<=>? 3 L# ABCDEF /)finisher ( L, HIJKLM .O'( 9Q OPQRST x /Q VWXYZ[ 3 )8u)5m/min.(v ]^_ '; *)>g) abc X')$ efg '<">B'( L, ijk .O'( *) mno ,Bt 0 qrs C uj) uvw #-Q"2

7 C: yz '( ^M |} +b8 ^R: • ! ] 0 #$ C7 0 &' ]<B'()Zg(: )* B'((Z ,- . T2 3 /0 ,g u*E<NO7() *PLR0() *&T>$&()v 2 .//VWX@ YZ[R\%Z1 *1V]^_&() *`L(ZI() *E<a7()

0]<B.' L,.O'(.0 4 ]<B'( v 6 '; 41.T 8 3d( L, : .O'( [< < A7 QPr > 2 @ ')g 4x7 0 B ]<B.' L,.O'( 97R7 /Q3 9 C Q#t( oAQ'( /Q3 D<G2 )C:>/ )8

~# ! 1,3 )b '(7 uoAQ'( 9 / R)+a'( 0%">,3 uC ?) F a2 2: H / 4xZ J t 7 C: LMNO '( QRST bR9 9 VWXY C)degree of compaction(&(<1 [\] 3;( u

)evenness(4 , % ! '( ? , ! >'(7 u)surface texture.(



1) Paving with Finisher

b/0+" \2S'= b/0+"

,9 , 0 ') $ L, b .O.' 0-Q ! '( 1 ,,"1')$ 7 '67 ZB 0 '( &)>m8 oAQ'( ^9<b 9 C :tr1'( 7 B de ! '( , gh A 9 jk C : mn tr1'( ~ pq a- ) st Bt u^R(Q vw , '( yz bR9 h) |} ,"$ 78 ^9Q • ! aB'(

7 #$ '6 u'Q &' , %7 *k )* A<'(7 p(< ,- , '( &) /0 X?;7 % 23 ! '( &(<1 56 3(7 a7Q 89 TB'(~3)>B'( : ]<'( 4x &)%Pd( ~>a1'.

,) => ?<G- D( ~ @A a- :BC ]<'( C EF T? 4 HI x o KL AR 9 -R) NO +b 2(:O1 QR 3( TU ')g 4 WX x)7) ! 1C 7 C:'( D<G- v1g j)C)B2 4x 9 ,+$)X1C.



!


Paving of Asphalt Mix2) Hand (Laying) Paving

`%1$9< :&49< ^Q, @ Z @'( ?), \ @'( [) B/rt A)O'( *;) b , '( 4 d x ;; : f ,')$ 41.T h 3d( L,.O'( 9QT- ;

R) j +b [< l A7 9 n GB- ; 4 p 1'( 0 /(<B'( 4x7)finisher ( /Q r ! $ 2(M t 1';( 0 v C u) x +' ^)/(QC7 L,.O'( 9Q#- D8 Z#] 9QT'( z "#%'( 7 B3 ^9)-R7 C: | '( 9 ~ / j) /</ " ](Q'( 78

v $ '; 0 & /<C 9 ( C L, * .O'( pb ] ~>a2 ~a- )Bt uoAQ'( R)+b 2(:O13( :>/ 4'7d(

L,.O'( *)?<GC Z@x7 ^97Q#' j),xk2 QP+ 0 /<C)segregation.(



3) Paving during Cold Period

0146)9< R6O%[< @A :&49<

-. #&Q'( % 01 3d( v 34 ./ b 67 # , - ;7 : 9: Ba1B'( % <= ! '( v ?@ ./ o BC AQ'( 0 EF >B-&) HI B'(7 : KL ,.a'( 9 NO C P .O1 ST '( : VW 0 $ ;; Y ..#B'(.7 C: [\ '( Ck _ 3 v ab ./ j) de $)Tg

) g B6(9 D< i G2 D(7 u^Q k Y)#C o m AQ'( R)+b &(R7 Zg(:B'( D<G2 D8 ~a-o opq AQ'( R) stu +b 9 wxy C •Q"') {|} $.*) • !" "#%.' o $%& AQ'( 0 ()* >B- 2< ,-. B 0 '( v 012 ./7

9 / <a'( ^R(Qg bR9 Q TO>2 )C:>/ ,')1'( ,1.T3d(:

, , , % ! '( "#%'(+ 3oc

, %$(Q'( "#%'(0oc

, ,1.T3d( h)3d( "#&- 3oc



"


Paving of Asphalt Mix4) Paving during Rainy Period

46*7L< *%(D abF :&49<

') 456 ,B.' 89: /Q 0 B'( % <=> 3d( v @AB ./ j)"$) DEF 3 ) HIJ ?Qt6 ) LMN Bt o PQR AQ'( B TUV ! - \ X 1,.$)] o 0 Z . 27 L, \ .O'( : -Q#2 v ./ Z b B 0 2 d $<&Q'( D8 3 ,g uR)%Cd(7 < " fg X1.' j) ij "g; T lm AQ'( aQ op 0 12 4') rs 1')$7 u< uv @.'( T xy A ': {| "T27 7 C: ~• .

, , % !" 3 *)

$% /)"x )

'( +-Q1 0 27 5<

*+ B1'(7)*)

-. P)T1?(.( &<"

01 3

34 ')g 4

67 x )

9: C8

<=> T,TO'( R) @AB %Cd() DEF YQYR(*) HIJ "#%'( o LMN AR 4 PQR x QB1 TUV ! ? D8 ) XYZ >>GB- G,B ! '() ,1.T3d( h)3d( "#&.(



5) Paving during Hot Days

046'9< R6O%[< @A :&49<

4.- )C ^)/(QC ~a- )>=7:

,41.T3d( L,.O.' a1>B'( +a'( R) 0 Y;)0>@B'((9 \ / L

.O'( ^R(Q

g bR9 Q TO$ G,B3 ,1.T3; *)"#& oAR :>/ A)P7 9)1 0 B'(.

,9 bcd C : fgh tr1'( : jkl 0 $ ;; p< nop AQB'( % rst ! '( v vwx ./ R7QB') z{| $ *) ~• ! #tQB.' o)B #$% ! '( 2: '() / v + 1g : .T - 3d( ^R(Q / g bR9 a)TO?()(40oC T 1 AQ'( 8Q 3 12 Dr 5 $ v 7 A<- ) 9 >=7 u

4 , % ;< ! '( ZG >? X1'( ) AB >#>a2 : DE ] D< GH G? 7 'b JK $7 ujk, MN ' 9Q PQ #1')deformation(pM ST ?7 % ! '( v./ 9 ,C<1#'()bleeding(j)"g; TAQ'( ^&)Tt 9 C o 0. 2 41'(7.



+


4 V 1'(7 ,1.T X 3d( Z "#%.' \ x)lt v ./8 v '; [< b A<'( < d = 7 C: f '( 9 C p:+'(4 , % h ! '( &(Q1=;(7 ZGX1'( : / ,')/ C7)"C7 j),')/ j)2)#m "#%'( 4% 0 2.

9(9M j 2 4') l 1')$7 u n "#%'( 4 p x r ,6(<+'( *) %(QT'( # ! ? Z"2 ,') 0 '( x)lG')$7 *9(R ) t B.t \ ?8 )Bt u$<&Q'(7 R)%Cd)t -<a'( *(Qmu B'( : / C7)"B'( )b x '(7 z "#%'( 4 | x .P(:'( 9 ,a ! td( # ! ? 9(9M 2 ,6(<+'( *) %(QT'( # ! ?

~• %$(Q'( ^9) !" B'( ~. $% @2 \ '( >/ ? 1 *+ >-)9 ,C< -. 1#'(( 01 ?<,.'( ^Q=) 34 # ' )+?(: 67 "x7)flexibility .(^< 9: ] < <= .P v ?@ '; : BC ,a'( 7 C: EF ')$ Z HI @? 7 KL '6 v NO '; x) QR /+)$7

4 , % ! '( &(<13;( 7 'b t7 ,1.T3d( *)"#%'( 9 ,$ < @'.






-


Example: 3,5 cm thick wearing course (asphalt concrete)

Summer, Air temp. 22 oc

Temp. of layer below 35 oc

Autumn

Air temp. 2 oc

Temp. of layer below 2 oc

Min. possible temp.

for compaction.

Time after the beginning of paving with finisher (min.)

(cooling time)




(Rollers PM"#3+")

@A a'<179< 11T% c%> 46$BF< 17B;$YCT NO%79<:

-@BC3DL< *$CF9< c%> -:&49< #'6D7):&49< #$7G(

- #()*9< d4T% e7D) #O<49<( #$BC3DL<-U*$CF9<% %29< 04<4' #241



.



(Rollers PM"#3+")

U/H& <H3>+" U*T:

-:&49< P6Q2 :CF #C$(f9< a'<179< 5%GB 5g) #241 d63F>< a)O e719< #$C7T I1)B 5I% U04S6)7

5T *$CF9< 04<4'120 oCh6&B9L< 578> YB'R6()*9< 5$) 1$29<

-i<1FBD< 1>T a'19< R<47 11T @A *<4AL< i1T 6QG7D a($ @B9< #$BC3DL< R6()*C9 #$P<P>WL< a'<179<

5T4cm



(Rollers PM"#3+")*LSZR&() b)=ZSc) b)" *DMG&()

9 ,$ )C )+?R7 o7(Q1-722 - 82:O1 ! 27 u9 & o.P .g:C [7rt)finisher ( L,.O'( L @. '

:37 L,.O'( QQ$ 2<"2 3 ,g u9 P) ! '( , , % ! '( *) %(QT'(. /Q ! $ ZB 0 27:

-4 km/h 3 km/h uG,B ! '( *)"#%.'-8 km/h 7 km/h , , % ! '( *)"#%.'

)*) %(QT'( : ! '(u-< B 0 ' 7 C:'( [< 0 TC Z@-18 cm.



/



(Rollers PM"#3+") b)=ZSd *efg() b)" *DMG&()

*L%GI&() )+?R7 o7(Q1-10-12 u9 &

7 C:'( ,.B/ 4x )+C(:O13( b # , -7 v1g ,1.T3; *)"#%' , ! ,6Q'(

7 B310 cm #3)>C )+?8 )Bt *kA<'(7 p(< , '( :>/ 7 C:.'

B2)O'(7 , /Q 0 '(7 ,'<%'(.



(Rollers PM"#3+")3LL%GI&() 3;=ZSc) b)" *DMG&()

Z+$'@*;h)i>Fj) <Lk *DMG&()

)+>C Z,"l'( 2:O1 ! - uD(R7d( T.1OC 4=7)9 C Z"m879 &( ,1.T3d( *)"#%'( 7 C:'

G,B ! '()9 C 7 B388 cm(^QB'( 4x v'7d()first pass(4 ! ,6Q'( 7 C:'( 4x7

*)"#%')7 B3 v@]r$8 cm.(

p(< , '( :>/ 7 C:.' 2:O1 ! 2 )Bt B2)O'(7 , /Q 0 '(7 ,'<%'( *kA<'(7.



]



(Rollers PM"#3+")

)C8 T,TO'( -R(M 1=;( Q, % .g:B'()9 C oP869 &(2:O1 ! 2 4+x 7 B ! $ *)"#%' v'7d( ^QB'( 4x j) . -8)8 cm j 4 cm(7 C:'( 4x7

*)"#%' 4 ! ,6Q'() ST Uv V WY4 cm.(

-R(M 1=;( .g:B'( )Vibratory:( )+>C Z,"l'( 2:O1 ! -)9 C Q#t879 &(

*)"#%' 4 ! ,6Q'( 7 C:'( 4x)9 C Q#t88 cm(o,TO'(7 u)9 C oP86 9 &(*)"#%') ST Uv V WY8 cm.(4x j)2)$ j) 0 >C )+C(:O13( 0>B- 9 G'7 Zg:'( 9 C v'7d( ^QB'( )first pass.(



(Rollers PM"#3+")

.&ID( .M)G&() *PL+? )=:-7M 27 .g:B'( ,gkA 9 C :tr1'( ~a- 7 C:')$ U7QX'( Z#]

,G,?)G,B'( #](QB'( &(Qb;7 4x)G'( 9<]<')$): -R •< ! >C

u1 , , X1'( u: -M '( Q,, @ 2 uR<2<B'(...[ '((2Rk'( &)B')$ )=:-7M 27 u)D(M O'( #](QC(a7QTB'( &(<+'( L @/ 9 C :tr1'( ~a- )Bt u

CRk'( *)&),1g+( 9 C )=Q, %7 u,&)%B'( *(R)&+( 4x.



^



(Rollers PM"#3+") .MG() b)<' HGE)Passes(

^R<@$ Zg:'( *(QC 9:/ 9 / ",]9 *)C<. 0 C7 2)]R8 8)>= :b<2 ;< # ! B'( ~-Qa1'(7 ^Q#O'( 7 '6 0#1- 3 ,g u".%C.

CDE .MG() b)<' HGE l2V>;@:

- u 7 C:.' L,.O'( ,.$)]-7 B ! '(-v.T ! '( "#%'( *)#m7 ZB , 2 ^<])h)3d( "#&(u

-R)+a' 4'7d( 7 C:'( )finisher (

- u L,.O'( ^R(Qg bR9-u-<a'( ZC(< 0 '(- u ^Qx<1B'( Zg(:B'( U<?7 DR7-Zg:'( /Q3..



(Rollers PM"#3+")

.MG() b)<' HGE)Passes( Zg:'( *(QC 9:/ :-: , 2 9 GB- C)/ ^R<@$ 9 G'7)passes( \ .]

4')1'( < , >'(:

,GM)@ <')C(@n)( -R(M 1=;( Zg(:B'( 2(:O13( D7:$ L,.O'( 7 C:',68 -4 ! ,6R 7 C9 *(QC)u^R(Q , '( bR9 uL,.O'( U<? ~ ! g

"#%'( 7 B3 u.g:B'( DR77 U<?(

4Z?<' B2)O'(



!_



(Rollers PM"#3+")o'G() G$E *;=@<q bZSZL>M)

,^R(Qg bR9 Z@2 D8 Z#] 7 C:'( &)+?; ^R7Q / x<AQB'( "#%'( %3

) j)#-Q"2(90 oc.

,0]<B'( 4x .g:C 9 C Qlt8 9<b7 ^R7Q /.

,o.P .g:B'( 9<b7 ^R7Q /)finisher (

v'7d( ^QB'( 4x ^QY)#C)v'7d( .g:'(.(

,v.T ! '( +a'( 9 C 7 C:')$ &(:1$;( ^R7Q /•Q ! B.'.



(Rollers PM"#3+")o'G() G$E *;=@<q bZSZL>M)

, #>F6D9< #()*9< YCT #C'179< 04<1BD< i1T)N8%79< 4$$kB 1>T 46D79< l3> V6FB<.(

,5F6D9< *$CF9< YCT #3O<% #C'179< e4B i1T) #>F6D9< #()*9<.(

,m679< i<1FBD< @A *<4AE< i1T)h6&B9< N>79 #$>1;79< R<46*n9 m679< i1FBD$6Q) *$CF9<( #&6F 0167) R<46*E< mb*) e9V% m679< 5T m6>kBDL< 56G7E6) U

Mbf7 R6)C'BD796G h6&B9L< 18.

,5$FDB 04%48) #oA1B( #$*6*79< R<46*E<)60 oc(4%47) e9V iB$ p$' U5F6D9< *$CF9< YCT @2$41B9< #C'179<.



!


(Joints LX/H+") )+>C7 u9 -R7)a1C oAR )R) ! C 9 ,$ rX>2 41'( ZA(<T'( 4=7

TAQ'( o.1' j(QY)#C j)##3 Q#1 0 2 4=7 , /Q 0 '(7 ,'<%'( *kA<'( D<G- D8 ~a- 3 ,g uoAQ'( &)>m8 C)1'( -)> 0 '( v% 0 2 1 ' D; j)"g;

ZP(9 v'; *<-M '(7 &)B'( •Q ! 1,3 ;;7 9 -R) ! B'( 9 ,$ 2)2 2) , 1'( 8)>= TAQ'(.<= j)C)B2 B , 1.C *kA7 < .O' [<. , '( 9! g87

(Parallel Paving) )R(<1B'( oAQ'(

'b = vB ! 2 3 ,g u>P)3 4=7 :

]<'( C T? 4x *(R) ! B'( oAQ2 D8 )8 oAQ'( "-Q%'()9 P) ! '(/9 P) ! '(()8)hot at hot.(


(Joints LX/H+")

(Parallel Paving)

)R(<1B'( oAQ'( )9 P) ! '(/9 P) ! '((

)hot at hot.(



!!


(Joints LX/H+") oAQ'( ')g 4x )C84'(<1B'(oAR 9 C 9 GB1'( 2:/ ')g 4x )8 u

oAQ'( (b = vB ! - 3 ,g : ]<'( C T? 4x 9 -R7)a1C 9 -R) ! C)9 P) ! '(/9R)#'(()8)hot at cold(uD<G2 ; Dr$ vA<,x

9 / .A7 Zt : 0 #2 D8 ~a,x ^QY)#C Q 0 #'( )+ .0 $ =<x *kA<'( R(:"B$ eQPd(10 cmj)#-Q"2.


(Joints LX/H+")

%3 D<G- D8 ~a- )Bt 'b = :>/ 9 -R) ! B'( C Ck2 -7(M $ jk6)C *kA<'(

)80 o

70 o(



!"

Hot on Cold (old)

The asphalt layer below was paved several days,

months…..or years ago. (cold asphalt layer)

Hot on Fresh

The asphalt layer below was paved

minutes or hours ago. (fresh asphalt layer)

Hot on Hot

Both asphalt layers are hot

paving of both layers in the same time


Types of Paving


Paving and CompactionHome work

4- Explain why the hand paving is not preferable.

Give an example with exact calculation.

5- U tubes

- Paving with finisher

- Hot on hot paving- Hand paving

- Compactors, Rollers

- Other equipment

89 week consideration during paving 2 وضع التوافق1

Documents