(A) DESIGN STIPULATION.
|
01. Characteristic compressive strength required |
20.0
N/mm2 |
|
02. Max. Size of aggregate |
20mm |
|
03. Type of cement |
SHREE PPC |
|
04. Exposure condition |
SEVERE |
(B) RESULTS OF CEMENT
|
TEST SAMPLE REF |
SPECIFIED REQUIREMENTS |
RESULT
OBTAINED
|
AS PER IS
1489 |
|
PHYSICAL
TEST |
|
||
|
SHREE PPC |
SPECICFIC
GRAVITY |
3.10 |
-------- |
|
INITIAL SETTING TIME
FINAL SETTING TIME |
134.0 MIN 196.0 MIN |
Ø 30 MIN < 600 MIN |
|
|
FINENESS |
2.20 % |
< 10 % |
|
|
SOUNDNESS |
1.0 MM |
< 10 MM |
|
|
COMPRESSIVE STRENGTH
A) AT 72 + 1h B) AT 168 + 2h C) AT 672 + 4h |
26.54 N/mm2 36.20 N/mm2 55.80 N/mm2 |
>16.0 N/mm2 >22.0 N/mm2 >33.0 N/mm2 |
(C) RESULTS OF AGGREGATE (20.0 MM)
|
SIEVE SIZE |
RESULT
OBTAINED
|
AS PER IS
|
|
20.0 MM |
PARAMETER |
|
|
GRADING 40.0 MM 20.0 MM 10.0 MM 4.75 MM |
PAASING %
100.0
% 100.0
% 12.70
% 0.32
% |
(100.0)
% (95-100)
% (25-55)
% (0-10)
% |
|
SPECIFIC
GRAVITY |
2.620 |
---------- |
|
WATER ABSORPTION |
0.64
% |
< 2% |
FLASKINESS INDEX
|
14.20
% |
<25% |
|
IMPACT VALUE |
19.55
% |
< 30% |
|
ABRASION VALUE |
19.81
% |
< 30% |
|
FREE SURFACE MOISTURE |
NIL |
----------- |
* AGGREGATE COMLY 20.0 MM AS PER IS.
(D) RESULTS OF
AGGREGATE (10.0 MM)
|
SIEVE SIZE |
RESULT
OBTAINED
|
AS PER IS
|
|
10.0 MM |
PARAMETER |
|
|
GRADING 12.5 MM 10.0 MM 4.75 MM 2.36 MM |
PAASING %
100.0
% 87.96 % 8.40 % 0.72
% |
(100.0)
% (85-100)
% (0-20)
% (0-5)
% |
|
SPECIFIC
GRAVITY |
2.610 |
---------- |
|
WATER ABSORPTION |
0.54
% |
< 2% |
FLASKINESS INDEX
|
18.85 % |
<25% |
|
IMPACT VALUE |
22.18 % |
< 30% |
|
ABRASION VALUE |
19.75 % |
< 30% |
|
FREE SURFACE MOISTURE |
NIL |
----------- |
* AGGREGATE COMLY 10.0 MM AS PER
IS.
(E) RESULTS OFSAND
|
SPECIFIED REQUIREMENTS |
RESULT
OBTAINED
|
AS PER IS
383:1970
|
|
|
PARAMETER |
|
|
GRADATION 10.0 MM 4.75 MM 2.36 MM 1.18 MM 600 MICRON 300 MICRON 150 MICRON |
PAASING %
100.0
% 99.20 % 98.03 % 79.33
% 36.20
% 9.80
% 1.13 % |
(100.0)
% (90-100)
% (75-100)
% (55-90)
% (35-59) % (0-10
) % |
SPECIFIC GRAVITY
|
2.60 |
------ |
|
WATER
ABSORPTION |
1.80 % |
< 2% |
|
SILT CONTENT |
NIL |
<7% |
|
FREE MOISTURE
SURFACE |
0.72 % |
------ |
SAND COMPLIES
WITH ZONE-II.
(F) FOR 20.0
MM GRADED AGGREGATE
|
SIEVE SIZE |
|
RESULT
OBTAINED
|
20MM: 10MM
|
AS PER IS
383 :1970
|
|
20.0 MM |
10.0 MM |
50 %:50 % |
PARAMETER |
|
|
GRADING 40.0 MM 20.0 MM 10.0 MM 4.75 MM |
% PASING
100.0 % 100.0 % 12.70 % 0.32 % |
PAASING %
100.0 % 100.0 % 87.96 % 8.40 % |
PAASING %
100.0 % 100.0 % 50.33 % 4.36 % |
(100.0) % (95-100)
% (25-55) % (0-10) % |
ABOVE AGGREGATE
COMPLY WITH 20.0 MM GRADED IN 50:50 RATIO OF 20& 10 MM AGGREGATE.
(F) GRADING
FOR ALL IN AGGREGATE
|
SIEVE SIZE |
|
20MM: 10MM
|
AS PER IS
383 :1970
|
|
|
AGGREGATE |
SAND |
55 %:45 % |
PARAMETER |
|
|
GRADING 80.0 MM 40.0 MM 20.0 MM 4.75 MM 600 MIC
150 MIC |
% PASING
100.0 % 100.0 % 100.0 % 4.36 % 0.0 % 0.0 % |
PAASING %
100.0 % 100.0 % 100.0 % 99.20 % 36.20 % 1.13 % |
PAASING %
100.0 % 100.0 % 100.0 % 47.04 % 16.29 % 0.50 % |
(100.0) % (100.0) % (95-100) % (30-50) % (10-35) % (0-6) % |
ABOVE AGGREGATE
COMPLY WITH ALL IN AGGREGATE IN 55:45
RATIO OF 20.0 MM AGGREGATE & SAND.
(H) REFERENCES:
Following IS Codes/ IRC Publications have
been followed for conducting the suitable tests on materials and trials on
design mix.
a) IS 383 – 1970 Specifications
for coarse and fine
Aggregate
from natural source for concrete.
b) IS 2386 – 1963 Methods
of tests of aggregate for
concrete.
c) IS 456 –
2000
Code of practice for Plain &
Reinforced concrete.
d) IS 10262 – 2009
Recommended guidelines for concrete mix design.
e) SP 23 Hand
book on concrete mixes.
(I) MATERIAL
RECIVED
1) Coarse
Aggregate
: 10 bags: (MARUDI)
2) Sand
: 05 bags
(LUNI)
(J)
TARGET MEAN STRENGTH.
For
M-20
20+ 1.65X4.0 : 26.60 N/mm2
(K) FREE WATER CONTENT BASED ON TRIALS IS =
157.50 litre
(L)
CALCULATION OF CEMNT CONTNET
WATER-CEMENT RATIO =
0.45
CEMENT CONTENT = 157.50 = 350.00 Kg/m3
0.45
(M)
MIX CALCULATION
|
A |
VOLUME OF CONCRETE |
1 m3 |
= 1
m3 |
|
B |
VOLUME OF CEMENT |
= 350.0
X 1 3.10 1000 |
= 0.113 m3 |
|
C |
VOLUME OF WATER |
= 157.50
X 1 1.0 1000 |
= 0.1575 m3 |
|
D |
VOLUME OF PLASTICIZER @ 0.80 % BY MASS OF
CEMENT MATERIAL |
= 2.800 X 1 1.220 1000 |
= 0.0022 m3 |
|
E |
ENTRAPPED AIR |
=2.0 % PER
CUBIC METER |
= 0.0200 m3 |
|
F |
VOLUME OF ALL IN AGGREGATE |
= [
A-(B+C+D+E)] |
= 0.7073 m3 |
|
G |
MASS OF COARSE AGGREGATE |
=0.7073X0.55X2.615X1000 |
= 1017.27 Kg |
|
H |
MASS OF FINE AGGREGATE |
=0.7073X0.45X2.60X1000 |
= 827.54 Kg |
|
H |
CORRECTION FOR WATER ABSORPTION FOR C. A |
=1017.27X0.59/100 |
= 6.00 Kg |
|
H |
CORRECTION FOR WATER ABSORPTION FOR F. A |
=827.547X1.08/100 |
= 8.93 Kg |
|
|
TOTAL WATER |
= 157.50+6.0+8.93 |
= 172.43 Kg |
|
MIX DETAIL |
AS BELOW |
|
W/C RATIO |
0.45 |
|
CEMENT(SHREE PPC) |
350.00 Kg |
|
SAND
(FA) (LUNI RIVER) |
836.47 Kg |
|
AGGREGATE
(CA) (MARUDI) |
1023.27 Kg |
|
WATER
(BHATKHA) |
172.43 Kg |
MGEL/TR/MD/01519-I
|
S.NO |
MATERIAL |
QTY |
SLUMP DETAIL |
TEMP |
COMPRESSIVE STRENGTH 7 DAYS |
COMPRESSIVE STRENGTH 28 DAYS |
|
|
1 |
CEMENT( SREE CEMENT PPC) |
350.00 KG |
INITIAL |
190
MM |
34.8ºC |
21.40 N/mm2 |
28.44 N/mm2 |
|
SAND |
836.00 KG |
20.55 N/mm2 |
27.90 N/mm2 |
||||
|
20.0 MM |
512.00 KG |
60 MIN |
150
MM |
21.24 N/mm2 |
28.15 N/mm2 |
||
|
10.0 MM |
512.00 KG |
AVG: 21.06 N/mm2 |
AVG: 28.16 N/mm2 |
||||
|
WATER |
172.40 KG |
120 MIN |
110
MM |
||||
|
PLASTICIZER |
2.800 KG |
||||||
B) So maintain the above quality of mix please check gradation & water absorption of coarse aggregate & fine aggregate regularly.
C) Regular checking the slump at placing of concrete.
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