BAB IV PENGUJIAN MATERIAL DAN PEMBAHASAN. Laboratorium Bahan PT. Adhimix Precast Indonesia Plant Kebon Jeruk.

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Bab IV Pengujian Material Dan Pembahasan

IV - 1 BAB IV

PENGUJIAN MATERIAL DAN PEMBAHASAN

4.1 Uraian Umum

Penelitian ini merupakan studi eksperimen yang dilaksanakan di Laboratorium, Dalam pelaksanaan eksperimen ini peneliti menggunakan Laboratorium Bahan PT. Adhimix Precast Indonesia Plant Kebon Jeruk. Seluruh tahap pekerjaan yang direncanakan pada penelitian ini telah selesai dilaksanakan. Dimulai dari tahap Pengetesan Material Agregat Kasar & Agregat Halus, perhitungan campuran beton Mix Desain, pengecekan kandungan air dalam material (pasir dan split), kemudian persiapan bahan dan material, pembuatan benda uji, sampai dengan pengujian kuat desak dapat dilaksanakan tanpa menemui kesulitan yang berarti. Hasil penelitian yang berupa data-data kasar, selanjutnya dianalisis untuk mengetahui perbandingan kinerja beton mutu tinggi dengan penambahan Superplasticizer (Glenium 181) terhadap kuat tekan.

4.2 Hasil Pengetesan Material Aggregat Kasar & Aggregat Halus 4.2.1 Kadar Lumpur

Kadar Lumpur Pasir Bangka

 Berat Kering Sample sesudah dicuci dengan ayakan no 200 = 500gr ; 600 gr

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IV - 2

ayakan no 200 = 488,4 gr ; 585,8 gr

 Kadar Lumpur I = ((500 – 488,4) / 500) x 100 = 2,32 %  Kadar Lumpur II = ((600 - 585,8) / 600) x 100 = 2,36 %

 Jadi rata-rata dari dua hasil test adalah (2,32% + 2,36%) / 2 = 2,34%

Kadar Lumpur Split Rumpin

 Berat Kering Sample sesudah dicuci dengan  Ayakan no 200 = 3000 gr ; 3200 gr

 Berat Kering Sample sesudah dicuci dengan Ayakan no 200 = 2971,6 gr ; 3173,7 gr

 Kadar Lumpur I = ((3000-2971,6)/ 3000) x 100 = 0,95 %  Kadar Lumpur II = ((3200-3171,2) / 3200) x 100 = 0,90 %

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IV - 3 4.2.2 Pengetesan berat isi dan rongga pada aggregate

Tabel 4.1 Berat isi pada Pasir Bangka

PEMERIKSAAN BERAT ISI AGGREGATE ASTM-C29

JENIS MATERIAL : Pasir Ex Bangka SUPLIER : Bintang Binamitra, PT

PLANT : Kebon Jeruk

DITERIMA TANGGAL : 6 Desember 2013

PEMERIKSAAN BERAT PADAT

URAIAN

I II

A Berat Wadah kg 2.35 2.35

B Berat Wadah + Contoh Benda Uji kg 11.58 11.56

C Volume Wadah dm3 5.89 5.89

D Hasil Perhitungan ( B - A ) / C kg/m3 1.567 1.564

Rata-rata 1.565 kg/m3

PEMERIKSAAN BERAT ISI GEMBUR

URAIAN

I II

A Berat Wadah kg 2.35 2.35

B Berat Wadah + Contoh Benda Uji kg 10.64 10.65

C Volume Wadah dm3 5.89 5.89

D Hasil Perhitungan ( B - A ) / C kg/m3 1.407 1.409

Rata-rata 1.408 kg/m3

Kadar Air 8.45% Berat isi rata-rata = 1.487 kg/m3

Ditest Oleh : Supriyanto Diperiksa Oleh: Tri ismawanto

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IV - 4 Tabel 4.2 Berat isi Split Rumpin

JENIS MATERIAL : Split 10-25

SUPLIER : PT. Batu Gunung Makmur

PLANT : Kebon jeruk

DITERIMA TANGGAL : 06/12/2013

A BERAT WADAH/CONTAINER (KG) 3.4 3.4

B BERAT CONTAINER + SAMPLE (KG) 11.2 11.3

C VOLUME WADAH/CONTAINER (M³) 5.75 5.75

D HASIL PERHITUNGAN ( B - A ) (KG/M³) 1.357 1.374

C

RATA-RATA (KG/M³) 1.365

A BERAT WADAH/CONTAINER (KG) 3.4 3.4

B BERAT CONTAINER + SAMPLE (KG) 12.06 12.07

C VOLUME WADAH/CONTAINER (M³) 5.75 5.75

,

D HASIL PERHITUNGAN ( B - A ) (KG/M³) 1.506 1.508

C

RATA-RATA (KG/M³) 1.507

NB : Kadar air material 1,84 %

(KG/M³) 1.436

TESTED AND CALC. BY :: Supriyanto DATE :

CHECKED BY :: Tri Ismawanto DATE :

06/12/2013 06/12/2013

W301-Q029/8.1/98

PEMERIKSAAN BERAT ISI PADAT

II ASTM - C 29

PEM ERIKSA AN BERA T IS I A GGREGATE

BERAT ISI RATA-RATA

PEMERIKSAAN BERAT ISI GEMBUR

I II

I

Perhitungan Rongga Pasir

Void = 100 x ((2,61x1)-1,487) / (2,61x1) = 43,02 %

Perhitungan Rongga Split

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IV - 5 4.2.3 Pengetesan berat jenis dan penyerapan aggregate

Tabel 4.3 Pengetesan berat jenis dan penyerapan splite

DESCRIPTION AND SOURCE OF SAMPLE :

RECEIVED ON :

TO BE USED FOR : Readymix concrete

A WEIGHT OF SSD SAMPLE ON AIR 5000 gram 5000

B WEIGHT OF SSD SAMPLE IN WATER 3084.8 gram 3082.2

C WEIGHT OF OVEN DRY SAMPLE 4899 gram 4898

1 SPECIFIC GRAVITY 2.61 2.61

SSD BASIS

2.61

2 SPECIFIC GRAVITY 2.56 2.55

OVEN DRY BASIS

2.56 3 SPECIFIC GRAVITY 2.70 2.70 APPARENT 2.70 4 WATER ABSORPTION A - C X 100 % 2.06 2.08 2.07 REMARK :

TESTED AND CALC. BY : Supriyanto DATE : CHECKED BY :Tri Ismawanto DATE :

ASTM C 128 - 84

S PEC IFIC G RAV ITY O F C O ARS E AG GREG ATE

06/12/2013

Split 10-25 PT. Batu Gunung Makmur

I II RUN NO. NO.OF FLASK gram gram gram A A - B C C A - B C C - B 06/12/2013 W301-Q030/8.1/98 06/12/2013

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IV - 6 Tabel 4.4 Pegetesan berat jenis dan penyerapan pasir

SPECIFIC GRAVITY OF FINE AGGREGATE ASTM C 128 - 84

DESCRIPTION AND Pasir Ex Belitung

SOURCE OF SAMPLE :: Bintang Binamitra, PT

RECEIVED ON : 06-Desember-2013

TO BE USED FOR : All Concrete

RUN NO.

NO.OF FLASK I II

A WEIGHT OF SSD SAMPLE ON AIR 500 gram 500 gram

B WEIGHT OF FLASK 175.9 gram 175.9 gram

C WEIGHT OF FLASK + WATER UP TO 672.7 gram 672.7 gram

CALIBRATION MARK

D WEIGHT OF FLASK + SSD MATERIAL + 980.9 gram 980.7 gram

WATER UP TO CALIBRATION MARK

E WEIGHT OF OVEN DRY SAMPLE 495.2 gram 495.1 gram

1 SPECIFIC GRAVITY A 2.61 2.60

SSD BASIS A + C - D

2.61

2 SPECIFIC GRAVITY E 2.58 2.58

OVEN DRY BASIS A + C - D

2.58 3 SPECIFIC GRAVITY E 2.65 2.65 APPARENT E + C - D 2.65 4 WATER ABSORPTION A - E X 100 % 0.97 0.99 E 0.98 REMARK :

TESTED AND CALC. BY : Supriyanto DATE : 06-Desember-2013

CHECKED BY : Tri Ismawanto DATE : 06-Desember-2013

WQ.Lab-002-01

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IV - 7 4.2.4 Analisis saringan dan modulus aggregate

Tabel 4.5 Pengetesan Sieve Analisis Pasir SIEVE ANALYSIS

DESCRIPTION AND Pasir Ex Belitung RECEIVED

SOURCE OF SAMPLE : Bintang Binamitra, PT ON 06/12/2013

TO BE USED FOR : All Concrete TOTAL WEIGHT

OF SAMPLE : 549.2 Gram

SIEVE COMULATIVE COMULATIVE GRADING SPECIFICATION

SIZE RETAINED ON SIEVE RETAINED PASSING ASTM C-33

INCHES GRAM % % % % 2" 0.0 0.0 0.0 100.0 100 - 100 1.5" 0.0 0.0 0.0 100.0 100 - 100 3/4" 0.0 0.0 0.0 100.0 100 - 100 3/8" 0.0 0.0 0.0 100.0 100 - 100 #4 3.1 0.6 0.6 99.4 95 - 100 #8 20.2 3.7 4.2 95.8 80 - 100 #16 93.1 17.0 21.2 78.8 50 - 85 #30 158.1 28.8 50.0 50.02 25 - 60 #50 149.3 27.2 77.2 22.8 10 - 30 #100 100.2 18.2 95.4 4.6 2 - 10 PAN 25.2 4.6 100.0 0.0 FM : 2.49 qgsand

TESTED AND CALCULATION BY : Supriyanto DATE :06/12/2013

CHECKED BY : Tri Ismawanto DATE :06/12/2013

WQ.Lab-00-01 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 # 1 0 0 # 5 0 # 3 0 # 1 6 # 8 # 4 3 / 8 " 3 / 4 " 1 . 5 " 2 " PA S S IN G PE R C E N T A G E SIE V E S IZ E A G G R E G A T E G R A D I N G G R A D I N G L I M I T S e r ie s 3 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 1 0 0 # 1 0 0 # 5 0 # 3 0 # 1 6 # 8 # 4 3 / 8 " 3 / 4 " 1 . 5 " 2 " PA S S IN G PE R C E N T A G E SIE V E S IZ E A G G R E G A T E G R A D I N G G R A D I N G L I M I T

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IV - 8 Tabel 4.6 Pengetesan Sieve Analisis Split Ex Rumpin

DESCRIPTION AND RECEIVED ON :

SOURCE OF SAMPLE :

TO BE USED FOR : ReadyMix concrete TOTAL WEIGHT

OF SAMPLE : 5159.0 Gram 100 - 100 90 - 100 40 - 85 10 - 40 0 - 15 0 - 5 0 - 0 0 - 0 0 - 0 0 - 0 FM : qgsand

TESTED BY : Supriyanto DATE :

CHECKED BY : Tri Ismawanto DATE :

S IEV E AN A LYS IS

Split 10-25 06/12/2013

PT.Batu Gunung Makmur

SIEVE COMULATIVE COMULATIVE GRADING SPECIFICATION

SIZE RETAINED ON SIEVE RETAINED PASSING ASTM C-33

INCHES GRAM % % % % 1,5" 0.0 0.0 0.0 100.0 1" 26.0 0.5 0.5 99.5 3/4" 1540.0 29.9 30.4 69.6 1/2” 1892.0 36.7 67.0 33.0 3/8” 1205.0 23.4 90.4 9.6 #4 410.0 7.9 98.3 1.7 #8 52.0 1.0 99.3 0.7 #16 0.0 0.0 99.3 0.7 #30 0.0 0.0 99.3 0.7 #50 0.0 0.0 99.3 0.7 PAN 34.0 0.7 100.0 0.0 6.84 06/12/2013 06/12/2013 W301-Q031/8.4/98 0 . 0 1 0 .0 2 0 .0 3 0 .0 4 0 .0 5 0 .0 6 0 .0 7 0 .0 8 0 .0 9 0 .0 1 0 0 .0 # 5 0 # 3 0 # 1 6 # 8 # 4 3/8 ” 1/2 ” 3/4 ” 1” 1 , 5 " P A S S IN G P E R C E N T A G E SIE V E SIZ E S e r i e s 1 S e r ie s 2 S e r ie s 3 0 . 0 1 0 .0 2 0 .0 3 0 .0 4 0 .0 5 0 .0 6 0 .0 7 0 .0 8 0 .0 9 0 .0 1 0 0 .0 # 5 0 # 3 0 # 1 6 # 8 # 4 3/ 8 ” 1/ 2 ” 3/4 ” 1” 1 , 5 " P A S S IN G P E R C E N T A G E SIE V E SIZ E S e r i e s 1 S e r i e s 2 S e r i e s 3

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IV - 9 4.2.5 Pengetesan Material terhadap kadar air

Tabel 4.7 Pengetesan Kadar Air material

Nomor Tes Jam Test Jenis Material A (Gram) B (Gram) C Rata-rata ((A-B) / Bx100) (%) (I+II)/2 (%) I _9:00 WIB pasir 500.0 474.9 5.29 5.62 II 500.0 471.9 5.95 I 10:00 WIB Split 1036.0 1026.0 0.97 1.20 II 1070.0 1055.0 1.42