LAMPIRAN A PERHITUNGAN DATA PENGUJIAN
1. Menghitung densitas sampel
Densitas
Keterangan: ρ
= kerapatan densitas gr.cm
-3
m =
massa gr
V =
volume cm
3
-
Sampel I
m = 4,37 gr V = 5,5 cm
3
Densitas , gr
, cm
3
, gr. cm
- Sampel II
m = 4,35 gr V = 5,5 cm
3
Densitas , gr
, cm
3
, gr. cm
- Sampel III
m = 4,32 gr V = 5,5 cm
3
Densitas , gr
, cm
3
, gr. cm
- Sampel IV
m = 4,31 gr V = 5,5 cm
3
Densitas , gr
, cm
3
, gr. cm
- Sampel V
m = 4,30 gr V = 5,5 cm
3
Densitas , gr
, cm
3
, gr. cm
-
Sampel VI
m = 4,28 gr
Universitas Sumatera Utara
V = 5,5 cm
3
Densitas , gr
, cm
3
, gr. cm
2. Menghitung daya serap air porositas sampel
DSA
Keterangan: DSA
= daya serap air m
b
= massa basah gr m
k
= massa kering gr -
Sampel I
m
b
= 4,29 gr m
k
= 4,28 gr DSA
, ,
, ,
- Sampel II
m
b
= 4,32 gr m
k
= 4,30 gr DSA
, ,
, ,
- Sampel III
m
b
= 4,35 gr m
k
= 4,31 gr DSA
, ,
, ,
- Sampel IV
m
b
= 4,37 gr m
k
= 4,32 gr DSA
, ,
, ,
-
Sampel V
m
b
= 4,41 gr m
k
= 4,35 gr DSA
, ,
, ,
-
Sampel VI
m
b
= 4,45 gr m
k
= 4,37 gr
Universitas Sumatera Utara
DSA ,
, ,
,
3. Menghitung kekuatan lentur
Keterangan: KL
= Kuat
Lentur MPa
P = Load Beban N
L = Jarak Span m
b = Lebar Sampel m
h = Tebal Sampel m
- Sampel I
P = 0,55132 kgf = 0,55132 kgf x 9,8 ms
-2
= 5,40297 N L = 10,5 cm
= 105 x 10
-3
m b = 15 mm
= 15 x 10
-3
m h = 2,5 mm
= 2,5 x 10
-3
m ,
, ,
, ,
, -
Sampel II
P = 0,6493 kgf = 0,6493 kgf x 9,8 ms
-2
= 6,36314 N L = 10,5 cm
= 105 x 10
-3
m b = 15 mm
= 15 x 10
-3
m h = 2,4 mm
= 2,4 x 10
-3
m ,
, ,
, ,
, -
Sampel III
P = 0,800557 kgf = 0,800557 kgf x 9,8 ms
-2
= 7,84546 N L = 10,5 cm
= 105 x 10
-3
m b = 15 mm
= 15 x 10
-3
m h = 2,6 mm
= 2,6 x 10
-3
m
Universitas Sumatera Utara
, ,
, ,
, ,
- Sampel IV
P = 0,811923 kgf = 0,811923 kgf x 9,8 ms
-2
= 7,95684 N L = 10,5 cm
= 105 x 10
-3
m b = 15 mm
= 15 x 10
-3
m h = 2,6 mm
= 2,6 x 10
-3
m ,
, ,
, ,
, -
Sampel V
P = 0,8747477 kgf = 0,8747477 kgf x 9,8 ms
-2
= 8,572527 N L = 10,5 cm
= 105 x 10
-3
m b = 15 mm
= 15 x 10
-3
m h = 2,4 mm
= 2,4 x 10
-3
m ,
, ,
, ,
, -
Sampel VI
P = 1,1678412 kgf = 1,1678412 kgf x 9,8 ms
-2
= 11,444844 N L = 10,5 cm
= 105 x 10
-3
m b = 15 mm
= 15 x 10
-3
m h = 2,4 mm
= 2,4 x 10
-3
m ,
, ,
, ,
,
4. Menghitung kekuatan impak sampel