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Admixture evaluation Admixture evaluation - Mumbai region
� Type of admixture
� Minimum water reduction required (18% or greater in our case)
� Retention time for mixes etc. (Taking into account worst case scenarios)
Technical Requirements
1
ACC Concrete Limited Admixture evaluation for Mumbai
� Details of mix design for each area
Conduct concrete trials on two cements (OPC & PPC) with
one lower grade (major concrete grade in the area, M30)
& one higher grade (M40 & above, M50) & to record the
following data:
� Dosage of admixture
Aim
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ACC Concrete Limited Admixture evaluation for Mumbai
� Slump (Initial) & Slump retention (For the retention desired in the area)
� Air content
� Compressive strength (7 & 28 days)
Superplasticizer
Brand
Superplasticizer Type of SP
(As per ASTM)
1 LD RB112 [LG] Type G
LD RB111 [HG] Type G
2 CF 125 [LG] Type G
CF 165 [HG] Type G
Superplasticizers studied
3
ACC Concrete Limited Admixture evaluation for Mumbai
3 SUPAPLAST-PC(RMC) [LG] Type G
SUPAPLAST-PC(S) [HG] Type G
4 SIKAMENT 581 acc [LG] Type G
SIKAMENT HE 510 acc [HG] Type G
5 CONPLAST SP-440 [LG] Type G
CONPLAST SP-500 [HG] Type G
OPC
(30 MPa)
OPC
(50 MPa)
PPC
(30 MPa)
PPC
(50 MPa)
Cement, kg 380 480 380 520
Water, kg 160 160 160 160
20 mm, kg 433 545 428 525
Concrete mixtures studied for evaluation
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ACC Concrete Limited Admixture evaluation for Mumbai
20 mm, kg 433 545 428 525
10 mm, kg 473 451 467 435
N. Sand, kg 668 551 660 531
C. Sand, kg 330 278 326 268
Brand # 1 # 2 # 3 # 4 # 5
Cement type OPC PPC OPC PPC OPC PPC OPC PPC OPC PPC
Admixture dosage (%) 1.4 1.3 1.3 1.4 1.6 1.5 1.2 1.2 1.2 1.2
Slump (mm) Initial >250 >250 180 >250 >250 >250 >250 >250 >250 >250
30 min 180 250 150 >250 >250 >250 155 190 180 190
60 min 160 200 110 190 175 200 140 150 115 160
Lower grades
Results of laboratory trials
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ACC Concrete Limited Admixture evaluation for Mumbai
60 min
90 min 80 160 95 180 160 160 125 145 105 130
120 min -- 145 90 170 135 160 100 120 90 110
Strength (MPa) 7 d 39.3 35.3 40.3 29.5 37.0 31.0 42.7 35.3 35.4 35.9
28 d 55.9 47.0 54.8 46.2 49.7 45.0 56.2 48.3 51.6 50.0
Air content (%) at 2 Hrs -- 1.9 2.4 3.3 2.5 1.5 3.0 2.2 3.3 2.7
Higher grades
Results of laboratory trials
Brand # 1 # 2 # 3 # 4 # 5
Cement type OPC PPC OPC PPC OPC PPC OPC PPC OPC PPC
Admixture dosage (%) 1.4 1.4 1.4 1.3 1.3 -- 1.2 1.25 1.3 1.1
Slump (mm) Initial >250 >250 >250 >250 >250 -- >250 >250 >250 >250
30 min >250 250 >250 >250 >250 -- 150 190 180 200
60 min 180 220 160 180 >250 -- 130 190 150 160
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ACC Concrete Limited Admixture evaluation for Mumbai
60 min
90 min 160 195 150 180 200 -- 100 175 130 140
120 min 140 180 115 125 160 -- 100 140 110 110
Strength (MPa) 7 d 45.4 48.0 53.1 46.0 56.8 -- 53.1 49.5 46.7 51.6
28 d 68.6 62.5 70.7 65.2 67.5 -- 68.8 59.6 65.0 65.8
Air content (%) at 2 Hrs 1.5 1.6 1.1 1.5 1.9 -- 1.6 1.3 1.7 2.5
Slump Retention of low strength concrete
60
90
120
150
180
210
240
270
300
Slu
mp (m
m)
BASF
PIDILITE
SWC
SIKA
FOSROC(1.3)
(1.2)
(1.2)
(1.6)
OPC low grade (30 MPa)
(1.4)
Brand 1
Brand 2
Brand 3
Brand 4
Brand 5
270
300PPC low grade (30 MPa)
7
ACC Concrete Limited Admixture evaluation for Mumbai
0 30 60 90 120Time (min)
0
30
60
0 30 60 90 120Time (min)
0
30
60
90
120
150
180
210
240
270
Slu
mp (m
m)
BASF
PIDILITE
SWC
SIKA
FOSROC
(1.4%)(1.5%)
(1.2%)
(1.2%)
(1.3%)Brand 1
Brand 2
Brand 3
Brand 4
Brand 5
30
40
50
60
ve s
trength
(M
Pa)
(<80)
(145)
(90)
(170)
(135)
(160)
(100)
(120) (90)(110)
Low strength concrete (30 MPa)
Consistency values in mm at 2hrs
Trends observed (7 days)
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ACC Concrete Limited Admixture evaluation for Mumbai
Admixture Brand
0
10
20
30
7 d
ay C
om
pre
ssiv
BASF PIDILITE SWC SIKA FOSROC
OPC
OPC
PPC
OPC
OP
C
OPC
(1.4
%)
PPC
(1.3
%)
OPC
(1.3
%)
PPC
(1.4
%)
OPC
(1.6
%)
OPC
(1.2
%)
PPC
(1.2
%)
OPC
(1.2
%)
PPC
(1.2
%)
PP
C (1.5
%)
(170)
Brand 1 Brand 2 Brand 3 Brand 4 Brand 5
ADMIXTURE BRAND
40
50
60
70
ve s
trength
(M
Pa)
(90)
(170)
(135)
(160)
(100)
(120)(90)
(110)
Low strength concrete (30 MPa)
(<80)
(145)
Trends observed (28 days)
9
ACC Concrete Limited Admixture evaluation for Mumbai
Admixture Brand
0
10
20
30
28 d
ay C
om
pre
ssiv
BASF PIDILITE SWC SIKA FOSROC
OPC
OPC
OPC
OPC
OPC
(1.3
%)
PPC
(1.4
%)
OP
C (1.6
%)
OPC
(1.2
%)
PPC
(1.2
%)
OP
C (1.2
%)
PPC
(1.2
%)
PPC
(1.5
%)
OPC
(1.4
%)
PPC
(1.3
%)
Brand 1 Brand 2 Brand 3 Brand 4 Brand 5
ADMIXTURE BRAND
60
90
120
150
180
210
240
270
300
Slu
mp (m
m)
BASF
PIDILITE
SWC
SIKA
OPC High grade (50 MPa)
(1.3%)
(1.4%)
(1.2%)
(1.4%)(1.3%)
270
300PPC High grade (50 MPa)
Slump Retention of high strength concrete
Brand 1
Brand 2
Brand 3
Brand 4
10
ACC Concrete Limited Admixture evaluation for Mumbai
0 30 60 90 120Time (min)
0
30
SIKA
FOSROC
0 30 60 90 120Time (min)
0
30
60
90
120
150
180
210
240
Slu
mp (m
m)
BASF
PIDILITE
SWC
SIKA
FOSROC
(1.4%)
(1.25%)
(1.1%)
(1.3%)Brand 1
Brand 2
Brand 3
Brand 4
Brand 5
Brand 4
Brand 5
40
50
60
70
80
ve s
trength
(M
Pa)
(180)(180)
(115)
(125)
(160)(100)
(140)(110)
(110)
High strength concrete (50 MPa)
Consistency values in mm at
2hrs
Trends observed (7 days)
11
ACC Concrete Limited Admixture evaluation for Mumbai
Admixture Brand
0
10
20
30
40
7 d
ay C
om
pre
ssiv
BASF PIDILITE SWC SIKA FOSROC
OP
C
OP
C
PP
C
OPC
OPC
OP
C (1.4
%)
PP
C (1.4
%)
OPC
(1.4
%)
PPC
(1.3
%)
OP
C (1.3
%)
OPC
(1.2
%)
PP
C (1.2
5%
)
OP
C (1.3
%)
PPC
(1.1
%)
Brand 1 Brand 2 Brand 3 Brand 4 Brand 5
ADMIXTURE BRAND
40
50
60
70
80
ve s
trength
(M
Pa) (180)
(115)
(125)(160)
(100)
(140)
(110)(110)
High strength concrete (50 MPa)
(180)
Trends observed (28 days)
12
ACC Concrete Limited Admixture evaluation for Mumbai
Admixture Brand
0
10
20
30
40
28 d
ay C
om
pre
ssiv
BASF PIDILITE SWC SIKA FOSROC
OPC
OPC
OPC
OPC
OPC
(1.4
%)
OPC
(1.4
%)
PPC
(1.3
%)
OPC
(1.3
%)
OPC
(1.2
%)
PPC
(1.2
5%
)
OPC
(1.3
%)
PPC
(1.1
%)
PPC
(1.4
%)
Brand 1 Brand 2 Brand 3 Brand 4 Brand 5
ADMIXTURE BRAND
