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kajian banding kuat tekan dan modulus elastisitas beton ... - E-Journal

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Modulus <strong>elastisitas</strong> (MPa)<br />

Additive 4 % 4,9626 54,329 12,235 53,872 Turun<br />

Additive 5 % 5,9893 44,880 14,375 45,804 Turun<br />

Additive 6 % 7,9572 26,769 16,685 37,095 Turun<br />

Additive 7 % 10,096 7,0863 21,390 19,356 Turun<br />

Additive 8 % 8,9838 17,322 17,541 33,867 Turun<br />

Pemeriksaan <strong>modulus</strong> <strong>elastisitas</strong><br />

Tabel 5. Modulus <strong>elastisitas</strong> rata-rata untuk tiap jenis <strong>beton</strong> <strong>dan</strong> umur tertentu<br />

Beton<br />

Umur 7 hari Umur 28 hari Ket.<br />

Er (MPa) Persen Er Er (MPa) Persen Er Persen Er<br />

Normal 14763,39 - 24288,03 - Normal<br />

Normal dicor dalam air 7826,920 46,9843 15589,68 35,8133 Turun<br />

Additive 4 % 9083,906 38,4701 14743,72 39,2964 Turun<br />

Additive 5 % 9975,685 32,4296 18185,56 25,1254 Turun<br />

Additive 6 % 13041,22 11,6651 18912,29 22,1333 Turun<br />

Additive 7 % 13920,95 5,7063 20123,72 17,1455 Turun<br />

Additive 8 % 12654,51 14,2845 17703,97 27,1083 Turun<br />

25000<br />

20000<br />

15000<br />

10000<br />

5000<br />

0<br />

Modulus Elastisitas (MPa)<br />

Per<strong>banding</strong>an regresi <strong>modulus</strong> <strong>elastisitas</strong><br />

0 1 2 3 4 5 6 7 8<br />

Umur <strong>beton</strong> (hari)<br />

Beton normal dicor dalam air laut<br />

Additive 4 %<br />

Additive 5 %<br />

Additive 6 %<br />

Additive 7 %<br />

Additive 8 %<br />

Linear (Beton normal dicor dalam air laut)<br />

Linear (Additive 4 %)<br />

Linear (Additive 5 %)<br />

Linear (Additive 6 %)<br />

Linear (Additive 7 %)<br />

Linear (Additive 8 %)<br />

Gambar 2. Grafik per<strong>banding</strong>an <strong>kuat</strong> <strong>tekan</strong> untuk berbagai jenis <strong>beton</strong>.<br />

30000<br />

25000<br />

20000<br />

15000<br />

10000<br />

5000<br />

0<br />

HASIL MODULUS ELASTISITAS DENGAN BERBAGAI<br />

JENIS BETON<br />

Gambar 3. Grafik nilai <strong>modulus</strong> <strong>elastisitas</strong> untuk berbagai jenis <strong>beton</strong><br />

normal normal dicor<br />

dalam air<br />

Additive 4% Additive 5% Additive 6% Additive 7% Additive 8%<br />

Jenis <strong>beton</strong><br />

E (7 hari)<br />

E (28 hari)

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