Jl. Babarsari No.44 Yogyakarta 55281 Indonesia KotakPos 1086 Telp.+62-274-487711 hunting Fax. +62-274-487748
112
D. Hasil Pengujian - 112
Contoh Hitungan : f = 50 x 9,80671 = 490,3355 N
A = 0,25 x π x d
2
= 0,25 x π x 152,7
2
= 18313,357 mm
2
P = 208,76 mm
0,0268MPa 18313,357
490,3355 A
f σ
5 3
1,916x10 208,76
4x10 P
Δ p ε
X
koreksi
= -0,158. 10
-5
5 5
5 koreksi
koreksi
2,0741.10 0,158.10
1,916.10 x
ε ε
Beban maks = 1790 kgf
Fmax =
357 ,
18313 80671
, 9
1790x
= 0,9585 MPa σ
p
= 0,2677 MPa ε
p
= 8,3013 . 10
-5
Modulus elastisitas =
p p
ε σ
3225,3593 MPa Modulus elastisitas teori =
fc x0,043x
W
1,5 c
= 2846,5467 MPa
y = 0.0005x
2
+ 0.0261x + 0.0041 R² = 0.9974
0.0 0.1
0.2 0.3
0.4 0.5
0.6 0.7
0.8 0.9
0.0 10.0
20.0 30.0
M Pa
.10
-5
Grafik Kuat Tekan SF 30 4
Jl. Babarsari No.44 Yogyakarta 55281 Indonesia KotakPos 1086 Telp.+62-274-487711 hunting Fax. +62-274-487748
113
D. Hasil Pengujian - 113 Kode Beton =
SF 45 1
Po =
207,36 mm
Ao =
18554,0027 mm
2
Beban Compressometer
Compressometer Tegangan
Regangan Regangan
Koreksi kgf
N Δ P 10
-3
Δ P2 10
-3
MPa 10
-5
10
-5
0,000 0,000
1,139 0,000
25 245,168
10 5
0,013 2,411
1,272 50
490,336 13
6,5 0,026
3,135 1,996
75 735,503
16 8
0,040 3,858
2,719 100
980,671 19
9,5 0,053
4,581 3,442
125 1225,839
21 10,5
0,066 5,064
3,925 150
1471,007 25
12,5 0,079
6,028 4,889
175 1716,174
30 15
0,092 7,234
6,095 200
1961,342 33
16,5 0,106
7,957 6,818
225 2206,510
39 19,5
0,119 9,404
8,265 250
2451,678 45
22,5 0,132
10,851 9,712
275 2696,845
51 25,5
0,145 12,297
11,158 300
2942,013 58
29 0,159
13,985 12,846
325 3187,181
64 32
0,172 15,432
14,293 350
3432,349 71
35,5 0,185
17,120 15,981
375 3677,516
77 38,5
0,198 18,567
17,428 400
3922,684 86
43 0,211
20,737 19,598
425 4167,852
146 73
0,225 35,204
34,065
Jl. Babarsari No.44 Yogyakarta 55281 Indonesia KotakPos 1086 Telp.+62-274-487711 hunting Fax. +62-274-487748
114
D. Hasil Pengujian - 114
Contoh Hitungan : f = 25 x 9,80671 = 490,3355 N
A = 0,25 x π x d
2
= 0,25 x π x 153,7
2
= 18554,0027 mm
2
P = 207,36 mm
0,013MPa 18554,0027
490,3355 A
f σ
5 3
2,411x10 207,36
5x10 P
Δ p ε
X
koreksi
= 1,139. 10
-5
5 5
5 koreksi
koreksi
1,272.10 1,139.10
2,411.10 x
ε ε
Beban maks = 457,5 kgf
Fmax =
0027 ,
18554 80671
, 9
5 ,
457 x
= 0,2418 MPa σ
p
= 0,066 MPa ε
p
= 3,925 . 10
-5
Modulus elastisitas =
p p
ε σ
1683,426 MPa Modulus elastisitas teori =
fc x0,043x
W
1,5 c
= 1195,754 MPa
y = -0.0003x
2
+ 0.0171x - 0.0191 R² = 0.996
0.0 0.1
0.1 0.2
0.2 0.3
0.0 10.0
20.0 30.0
40.0
M Pa
.10
-5
Grafik Kuat Tekan SF 45 1
Jl. Babarsari No.44 Yogyakarta 55281 Indonesia KotakPos 1086 Telp.+62-274-487711 hunting Fax. +62-274-487748
115
D. Hasil Pengujian - 115 Kode Beton =
