PERBANDINGAN DIFUSIVITAS KLORIDA MORTAR BATU APUNG, PASIR SUNGAI DAN PASIR BESI.

PERBANDINGAN DIFUSIVITAS KLORIDA MORTAR
BATU APUNG, PASIR SUNGAI DAN PASIR BESI
Skripsi
Untuk memenuhi sebagian persyaratan memperoleh gelar Sarjana Sains

Program Studi Fisika
Jurusan Fisika

diajukan oleh:
ARI EDO PUTRA
BP. 06135045

kepada
JURUSAN FISIKA
FAKULTAS MATEMATIKA DAN ILMU PENGETAHUAN ALAM
UNIVERSITAS ANDALAS
PADANG
2011

ABSTRAK
Telah dilakukan pengujian perbandingan difusivitas klorida mortar yang terbuat

dari campuran semen dengan batu apung, semen dengan pasir sungai dan semen
dengan pasir besi. Komposisi semen dengan material-material tersebut masingmasingnya 1:2, 1:3 dan 1:4. Dari hasil pengukuran diperoleh difusivitas klorida
terkecil terdapat pada mortar dengan komposisi 1:2, hasil ini berlaku untuk semua
jenis material pembuatan mortar. Mortar yang material penyusunnya semen
dengan batu apung pada komposisi 1:2 merupakan mortar dengan difusivitas
klorida terkecil dibandingkan mortar pasir sungai maupun mortar pasir besi
yaitunya 2,09 x 10-7 m2/s.
Kata kunci: Difusivitas klorida, mortar, batu apung, pasir sungai, pasir besi

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ABSTRACT
The test of chloride diffusivity had been carried out to the sample consisting of
cement - pumice, cement - river sand and cement - iron sand. The compositions of
the cement to each material respectively 1:2, 1:3 and 1:4. The experiment showed
that the smallest value chloride diffusivity was obtained by mortar with
composition 1:2, and it is applied to all samples. The smallest chloride diffusivity
2,09 x 10-7 m2/s, was produced by the addition of pumice at composition 1:2 than
the addition of river sand and iron sand.
Keywords: chloride diffusivity, mortar, pumice, river sand, iron sand

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DAFTAR ISI
Halaman
LEMBAR PENGESAHAN
KATA PENGANTAR ...................................................................................

i

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DAFTAR ISI ................................................................................................

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DAFTAR GAMBAR ...................................................................................

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ABSTRAK
ABSTRACT

DAFTAR TABEL

DAFTAR LAMPIRAN ..................................................................................

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PENDAHULUAN .......................................................................

1

1.1. Latar Belakang .....................................................................

1

1.2. Tujuan Penelitian .................................................................

4

TINJAUAN PUSTAKA ..............................................................

5

2.1. Tinjauan Pustaka ..................................................................

5

2.2. Landasan Teori .....................................................................

6

2.2.1. Batu Apung ...............................................................

7

2.2.2. Pasir Sungai ..............................................................

11

2.2.3. Pasir Besi ...................................................................

12

2.2.4. Semen ........................................................................

13

2.2.5. Difisivitas Klorida .....................................................

14

BAB I

BAB II

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BAB III

BAB IV

METODOLOGI PENELITIAN ................................................

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3.1. Waktu dan Tempat Penelitian .............................................

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3.2. Alat dan Bahan Penelitian ....................................................

18

3.2.1. Alat ...............................................................................

18

3.2.2. Bahan ...........................................................................

19

3.3 Tata Laksana Penelitian ........................................................

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3.3.1. Pembuatan Sampel ....................................................

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3.3.2. Pengujian ...................................................................

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HASIL DAN PEMBAHASAN ...................................................

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4.1. Difusivitas Klorida Masing-Masing Bahan ..........................

22

4.1.1. Mortar Batu Apung ...................................................

22

4.1.2. Mortar Pasir Sungai ...................................................

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4.1.3. Mortar Pasir Besi ........................................................

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4.2. Perbandingan Difusivitas Klorida Mortar Batu Apung, Pasir Sungai
dan Pasir Besi .......................................................................

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KESIMPULAN DAN SARAN ...................................................

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5.1. Kesimpulan ..........................................................................

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5.2. Saran ....................................................................................

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DAFTAR KEPUSTAKAAN ........................................................................

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...............................................................................................

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BAB V

LAMPIRAN

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DAFTAR GAMBAR

Halaman
Gambar 2.1. Batu Apung ...............................................................................

10

Gambar 2.2. Pasir Sungai...............................................................................

11

Gambar 2.3. Pasir Besi ...................................................................................

12

Gambar 3.1. Skema kegiatan penelitian .......................................................

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Gambar 3.2. Penampang pengujian difusivitas ion klorida sampel ...............

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Gambar 4.1. Grafik hubungan difusivitas klorida mortar batu apung dengan
komposisi material ....................................................................

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Gambar 4.2. Grafik hubungan difusivitas klorida mortar pasir sungai dengan
komposisi material.....................................................................

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Gambar 4.3. Grafik hubungan difusivitas klorida mortar pasir besi dengan
komposisi material.....................................................................

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Gambar 4.4. Perbandingan difusivitas klorida masing-masing material mortar
dengan variasi komposisi material ............................................

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DAFTAR TABEL

Tabel 2.1. Komposisi kimia batu apung.........................................................

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Tabel 2.2. Karakteristik fisika batu apung .....................................................

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Tabel 2.3. Ketentuan durasi tes penetrasi klorida berdasarkan NordTest 492
................................................................................................
Tabel 4.1. Difusivitas

klorida

mortar

batu

apung

pada

masing-masing

perbandingan komposisi ...............................................................
Tabel 4.2. Difusivitas

klorida

mortar

pasir

sungai

pada

12

24

masing-masing

perbandingan komposisi ...............................................................

27

Tabel 4.3. Difusivitas klorida mortar pasir besi pada masing-masing perbandingan
komposisi......................................................................................

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DAFTAR LAMPIRAN

Halaman
Lampiran 1. Data hasil Perhitungan Difusivitas Klorida berdasrkan nilai resapan
ion klorida ………………………………………………………
Lampiran 2. Prsedur pencetakan dan pengujian mortar ..................................

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