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www.softcivil.com |
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LAB TESTS | LAB TESTS |
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1) Specific Gravity of Fine Aggregate |
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Requirement |
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1.Pycnometer |
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2.Electronic Weight Balance |
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3.Sand 200g Sample |
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Sl.No |
Observation |
Trail |
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1 |
2 |
3 |
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1 |
Weight of Pycnometer, W1(g) |
100 |
100 |
100 |
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2 |
Weight of Pycnometer+dry Fine Agg, W2(g) |
200 |
200 |
200 |
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3 |
Weight of Pycnometer+ Fine Agg + water, W3(g) |
208 |
211 |
211 |
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4 |
Weight of Pycnometer + water, W4(g) |
150 |
150 |
150 |
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5 |
Specific Gravity |
2.38 |
2.56 |
2.56 |
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Specific Gravity Gs = (W2-W1)/((W4-W1)-(W3-W2)) |
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Average Specific Gravity of Sand =
2.5 |
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2 Specific Gravity of Coarse Aggregate |
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Requirement |
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1.Pycnometer |
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2.Electronic Weight Balance |
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3.Sand 200g Sample |
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Sl.No |
Observation |
Trail |
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1 |
2 |
3 |
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1 |
Weight of Pycnometer, W1(g) |
100 |
100 |
100 |
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2 |
Weight of Pycnometer+dry Coarse Agg, W2(g) |
75 |
75 |
75 |
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3 |
Weight of Pycnometer+Coarse Agg + water, W3(g) |
75 |
75 |
75 |
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4 |
Weight of Pycnometer + water, W4(g) |
150 |
150 |
150 |
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5 |
Specific Gravity |
-0.50 |
-0.50 |
-0.50 |
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Specific Gravity Gs = (W2-W1)/((W4-W1)-(W3-W2)) |
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Average Specific Gravity of Coarse Aggregate =
-0.5 |
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3 Sieve analysis - Fine Aggregate |
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Requirement |
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1.Sieve |
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2.Electronic Weight Balance |
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3.Weight of Sample |
250 g |
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Sl.No |
IS Sieve Designation |
Weight of Sample Retain |
% of Sample Passing |
As per IS 383 |
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1 |
10 mm |
0.00 |
100% |
100 |
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2 |
4.75 mm |
52.00 |
79% |
90-100 |
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3 |
2.36 mm |
10.00 |
75% |
75-100 |
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4 |
1.18 mm |
50.00 |
55% |
55-90 |
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5 |
600 Micron |
25.00 |
45% |
35-59 |
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6 |
300 Micron |
108.00 |
2% |
8-30 |
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7 |
150 Micron |
5.00 |
0% |
0-10 |
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Total Weight |
250.00 |
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Grading Zone II | |
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| DESIGN | |
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| Concrete Design Mix -(IS10262_2009) |
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| A) |
Design Stipulations |
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| a |
Grade Designation |
M25 |
RCC |
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| b |
Type of Cement |
OPC 43 Grade conforming to IS 8112 |
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| c |
Maximum Nominal size of
aggregate |
20mm |
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| d |
Minimum Cement Content |
320Kg/Cum |
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| e |
Maximum W/C (Based On
Experience) |
0.5 |
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| f |
Workablity |
100mm (Slump) |
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| g |
Exposure Condition |
Moderate |
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| h |
Method of concrete placing |
No |
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| i |
Degree of(Supervision) quality
control, and |
Good |
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| j |
Type of Aggregate |
(Rounded) |
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| k |
Maximum cement Content |
450Kg/Cum |
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| l |
Chemical admixture |
Superplasticizer |
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| m |
Using Fly Ash |
No |
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| B) |
Test Data for Materials |
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| 1 |
Cement used |
OPC 43 Grade conforming
to IS 8112 |
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Specific gravity of cement |
3.15 |
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| 2 |
Fly Ash |
Conforming to IS3812(Part
I) |
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Specific gravity of Fly Ash |
0 |
Put 0 Va |
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| 3 |
Chemical admixture |
Superplasticizer |
Conforming to IS 9103 |
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Specific gravity |
1.145 |
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| 4 |
i) Specific gravity of coarse
aggregates |
2.6 |
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ii) Specific gravity of fine
aggregate |
2.6 |
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| 5 |
Water absorption |
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i) Coarse aggregate |
0.00% |
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ii) Fine aggregate |
0.00% |
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| 6 |
Free (surface) moisture |
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i) Coarse aggregate |
1% |
(absorbed
moisture also nil) |
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ii) Fine aggregate |
1% |
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| 7 |
Sieve analysis |
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i) Coarse aggregate |
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ii) Fine Aggregate
for |
Zone II |
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The Actual Quantities of Different constituents required for one
Cum of Concrete |
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1) Cement |
300 kg |
1 |
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2) Fly Ash |
0 kg |
0.00 |
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3) Sand |
762.4 kg |
2.54 |
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4) Course Aggregate Fraction I -60% |
741.74
kg |
2.47 |
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5) Course Aggregate Fraction II -40% |
494.5 kg |
1.65 |
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6) Water |
140 kg |
0.47 |
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7) Chemical Admixture |
7.7 kg |
0.03 |
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