Effect of Curing Methods on Density and Compressive Strength of ...
Effect of Curing Methods on Density and Compressive Strength of ...
Effect of Curing Methods on Density and Compressive Strength of ...
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Figure 7: <str<strong>on</strong>g>Effect</str<strong>on</strong>g> <str<strong>on</strong>g>of</str<strong>on</strong>g> spray curing <strong>on</strong> the compressive strength <str<strong>on</strong>g>of</str<strong>on</strong>g> c<strong>on</strong>crete<br />
<str<strong>on</strong>g>Curing</str<strong>on</strong>g><br />
Method<br />
Air- <str<strong>on</strong>g>Curing</str<strong>on</strong>g><br />
Water<br />
Submerged<br />
curing<br />
Polythene<br />
curing<br />
Moist<br />
curing<br />
Burlap<br />
curing<br />
s<strong>and</strong><br />
Spray curing<br />
<str<strong>on</strong>g>Curing</str<strong>on</strong>g><br />
Period<br />
Table 2: Relati<strong>on</strong>ship between <strong>Density</strong> <strong>and</strong> <strong>Compressive</strong> <strong>Strength</strong><br />
Average<br />
<strong>Density</strong><br />
(Kg/m 3 )<br />
<strong>Compressive</strong><br />
strength<br />
(N/mm 2 )<br />
3 2469.1 11.9 11 29 319 121 841<br />
7 2424.7 16.6 24 22.5 540 576 506.25<br />
14 2459.3 20.0 15 9 135 225 81<br />
21 2459.3 20.9 15 7 105 225 49<br />
28 2400.0 17.8 28.5 18 513 812.25 324<br />
3 2459.3 16.6 15 22.5 337.5 225 506.25<br />
7 2459.3 17.3 15 19.5 292.5 225 380.25<br />
14 2469.1 19.0 11 13 143 121 169<br />
21 2400.0 20.3 28.5 8 228 812.25 64<br />
28 2518.5 23.6 5 3.5 17.5 25 12.25<br />
3 2469.1 15.0 11 26.5 291.5 121 702.25<br />
7 2390.1 16.1 30 24 720 900 576<br />
14 2429.6 18.5 22 15 330 484 225<br />
21 2597.5 19.3 1 12 12 1 144<br />
28 2538.3 23.0 2 5 10 4 25<br />
3 2518.5 18.1 5 17 85 25 289<br />
7 2518.5 18.2 5 16 80 25 256<br />
14 2439.5 19.6 18.5 11 203.5 342.25 121<br />
21 2518.5 22.5 5 6 30 25 36<br />
28 2518.5 30.5 5 1 5 25 1<br />
3 2459.3 14.5 15 27 405 225 729<br />
7 2419.8 15.7 25.5 25 637.5 650.25 625<br />
14 2434.6 17.3 20 19.5 390 400 380.25<br />
21 2429.6 18.7 22 14 308 484 196<br />
28 2419.8 24.4 25.5 2 51 650.25 4<br />
3 2404.9 13.6 27 28 756 729 784<br />
7 2439.5 15.0 18.5 26.5 490.25 342.25 702.25<br />
14 2498.8 17.2 8 21 168 64 441<br />
21 2479.0 19.7 9 10 90 81 100<br />
28 2429.6 23.6 22 3.5 77 484 12.25<br />
465 462 7770.25 9429.5 9282<br />
The Pears<strong>on</strong>’s correlati<strong>on</strong> was used to determine the relati<strong>on</strong>ship between the set <str<strong>on</strong>g>of</str<strong>on</strong>g> data. The rank assigned each<br />
member <str<strong>on</strong>g>of</str<strong>on</strong>g> the set (i.e. average density <strong>and</strong> compressive strength) are from the highest to the lowest. Where equal<br />
values in a set <str<strong>on</strong>g>of</str<strong>on</strong>g> data exist, the same rank has been assigned to each <str<strong>on</strong>g>of</str<strong>on</strong>g> the equal value which is the average <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
their positi<strong>on</strong>s in the ascending order <str<strong>on</strong>g>of</str<strong>on</strong>g> the values.<br />
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