Norman Ray, Norman
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Studi Angka Koefisien Korelasi Kuat Tekan Beton Mutu Tinggi Berdasarkan Umur & Bentuk Benda Uji Standar SNI 03-2847-2002 Ray, Norman
AGREGAT Vol 1, No 2 (2016)
Publisher : Universitas Muhammadiyah Surabaya

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Abstract

ABSTRACTPrediction of compressive strength of concrete when a initial age is very necessary to determine whether the concrete reaches the specifications and as a quality control of concrete, and finally determine the solution of action if the concrete had failured. Codes / research have been issued for a prediction (correlation ratio) but research on the correlation in high quality concrete has not been widely discussed. This study aimed to obtain age correlation ratio and speciment form correlation for high strength concrete compressive strength. Analysis using statistical probability of the normal distribution. The test results showed that the use of high strength concrete will increase  the concrete compressive strength correlation than normal quality,  correlation ratio in high quality concrete at the age 3,7,14,21,28 days was 0.40 0.68 0.91 0.94 1. Correlation ratio on high quality concrete was still above the normal strength concrete correlations. While the ratio of correlation different shape speciment of cylindrical form φ = 15, t = 30 to  15:15:15 cube is equal or with the number of correlation of 1(one). This indicates that use of different shape speciment are not  to be influence to concrete strength.Keywords: high strength concrete, ratio correlation of concrete age, ratio correlation of concrete speciment ABSTRAKPrediksi kekuatan tekan beton saat umur muda sangat diperlukan untuk meyakinkan apakah beton mencapai spesifikasi yang direncanakan dan sebagai kontrol kualitas pekerjaan beton (Quality Control), dan akhirnya menentukan tindakan selanjutnya jika beton tidak memenuhi harapan. Beberapa aturan/ rekomendasi telah dikeluarkan untuk mengatur tentang prediksi (angka korelasi) sebelumnya namun penelitian tentang angka korelasi pada beton mutu tinggi belum banyak dibahas. Penelitian ini dimaksudkan untuk mendapatkan angka korelasi umur dan rasio angka korelasi bentuk kuat tekan beton mutu tinggi. Analisa data menggunakan statistik probabilitas dalam distribusi normal. Hasil pengujian menunjukkan bahwa Penggunaan beton mutu tinggi akan meningkatkan angka korelasi umur kuat tekan beton dibanding mutu normal, angka korelasi  umur pada beton mutu tinggi pada umur 3,7,14,21,28 hari adalah 0,40 0,68 0,91 0,94 1. Nilai korelasi umur pada beton mutu tinggi ternyata masih di atas angka korelasi beton mutu normal. Sedangkan rasio angka korelasi bentuk benda uji dari silinder ϕ=15,t=30 ke kubus 15.15.15 adalah sama besar atau dengan angka korelasi sebesar 1. Hal ini menandakan bahwa penggunaan bentuk benda uji silinder atau yang lain tidak memberikan pengaruh perbedaan korelasi kekuatan tekannyaKata kunci: beton mutu tinggi, angka korelasi umur beton, angka korelasi bentuk benda uji 
Analisis Kinerja Dan Manajemen Lalu Lintas pada Bundaran ITS dan Bundaran Mulyosari Kota Surabaya Satoinong, Laif; Mardijono, Mardijono; Donny, Shofwan; Ray, Norman; Budi, Leonardus Setia
Ge-STRAM: Jurnal Perencanaan dan Rekayasa Sipil Vol 2, No 1: March 2019
Publisher : Department of Civil Engineering, Dr. Soetomo University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.35 KB) | DOI: 10.25139/jprs.v2i1.1483

Abstract

The aim of this thesis is solving the problem of jamming it happen at ITS roundabout and Mulyosari. In research and management of data, and theory which use is MKJI of 1997. The solving of this thesis needed as traffic light data on existing situation. Then, there are survey data at ITC roundabout and Mulyosari roundabout on 2018.  The function of this survey is to know about the real condition performance both of Circles.  Finally, both of circles are not effective (Jamming traffic light). Forward, predictions of performance traffic light in 5 years later until 2022 from 2018, finally more not effective. In this thesis gives the solution in case should use the traffic light. Finally, the solution as counting, that both of roundabout about traffic light become effective.