ROAD NOTE METHOD NO.4, DOE AND HIGH STRENGTH PERFORMANCE OF
CONCRETE
 
MIX DESIGN
 The process of selecting suitale ingre!ients of concrete an! !etermining their relative "uantities
 The purpose of pro!ucing an economical concrete #hich has certain properties are
1$%or&aility'
BASIS OF THE METHOD
 
C!nt
 The re"uire! "#C rati! to pro!uce the !esign characteristic strength !epen!s upon the c$aracteristics !% t$e ce&ent
  y using same "#C rati!' !i-erent strengths are pro!uce! y r!inary 2ortlan!' Rapi! har!ening 2ortlan! an! igh alumina cements$
 
 
C!nt
+ rough in!ication of the e(ree !% )!r*a+ilit is otaine! y the correspon!ing sl-&' an! c!&'actin( %act!r of the concrete at the #or& site  ,tensive 5aoratory investigations #ere con!ucte! at the ROAD RESEARCH ABORATOR/   to stu!y the relation among the various parameters such as
1$+ggregate7ement Ratio
4$8ra!ing
 
 
 
MIX DESIGN PROCED0RE
 
 
 
 
8er (!! control #ith #eigh atching$ C!nstant S-'ervisi!n
=
60
P!!r control' inaccurate volume atching of all in aggregates N! s-'ervisi!n
40
 
STEP 93 "ATER CEMENT RATIO
• The %7 ratio is re"uire! to give the necessary average compressive strength' at the !esire! age an! for the type of cement use!$
 
 
 
 
STEP ; 3 AGREGATE CEMENT RATIO "ITH DEGREE OF "OR<ABIIT/ AND GRADING OF C0R8E
• The proportion of
comine aggregate to cement is
!etermine! from  Tale 3 > 4 for aggregates of ma,imum si:e 40
an! (0mm respectively$
 
 
+ggregate availale at the #or& site !i-er
from the stan!ar! gra!ing' the coarse an! ;ne
 
 STEP =3 PROPORTION OF CEMENT, "ATER, FINE AND COARSE AGGREGATES
CEMENT 3 FINE AGGREGATE 3 COARSE AGGREGATE 3 "ATER
  1 Nf  Nc   #
 
 
 
 
 
 
 
 
IMITATIONS OF ROAD NOTE NO.4 METHOD
)esign tales of aggregate 7ement ratio recommen!e! in Roa! Note No$4 cover only three shapes of aggregates an! four type gra!ings
ut in practice aggregates having !i-erent shapes' si:es an! properties have to use for the mi,es$
 This metho! cannot e use! !irectly for the !esign of air entraine! concrete
 
PROBEM ON ROAD NOTE METHOD NO.4
 
 
 
 
 
 
 
 
 
)S.8N F 7N7RT M.G
 F!r t$e e(ree !% c!ntr!l -se re%er +el!) ta+le 1
Mini&-& stren(t$ is =7 !% t$e avera(e stren(t$.
 
 
8er (!! control #ith #eigh atching$ C!nstant S-'ervisi!n
=
60
P!!r control' inaccurate volume atching of all in aggregates N! s-'ervisi!n
40
 
F!r re-ire Hi($ )!r*a+ilit, re%er t$e ta+le ;
 
T$e (iven a((re(ate ! n!t +el!n( t! an 'artic-lar stanar (rain( c-rve.
 
 
ence the proportions y #eight of ingre!ients are given y
CEMENT 3 FINE AGGREGATE 3 COARSE AGGREGATE
  1 J 4$E,40 J 4$E,60
  100 100
PROPORTION B/ 8O0ME
  16E0  1(0
 
T$en + a+s!l-te v!l-&e &et$!, )e $ave
7 K 1$9(7 K ($EE7 K 0$6( 7 H 1m3 3$1,103 ($6,103 ($6,103 103
C@;== *(