Menghitung densitas sampel Menghitung daya serap air porositas sampel Menghitung kekuatan lentur

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