THE PREDICTION OF LONG -TERM SHRINKAGE OF LIGHTWEIGHT CONCRETE CONSIDERED TO MAGNITUDE OF SHORT - TERM SHRINKAGE PREDIKSI SUSUT JANGKA PANJANG BETON RINGAN BERDASAR NILAI SUSUT JANGKA PENDEK

Kristiawan, SA and Sangadji, Senot (2014) THE PREDICTION OF LONG -TERM SHRINKAGE OF LIGHTWEIGHT CONCRETE CONSIDERED TO MAGNITUDE OF SHORT - TERM SHRINKAGE PREDIKSI SUSUT JANGKA PANJANG BETON RINGAN BERDASAR NILAI SUSUT JANGKA PENDEK. dinamika TEKNIK SIPIL, 10 (1). pp. 80-87.

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    Abstract

    The magnitude of long-term shrinkage of lightweight concrete has to be considered in the design of lightweight concrete structure. This research is intended to develop a model for predicting the maginitude of long-term shrinkage of lightweight concrete based on the short-term value. Model of ACI 209 R-92 is used as a reference to start with and then it is verified and modified with the results of more than 9 months shrinkage observation on samples of lightweight concrete having various degrees of saturation of Artificial Lightweight Aggregate (ALWA), water/cement ratios, volume/surface ratios and curing period. The final model may be applied to predict long-term shrinkage of lightweight concrete using data from the observation of shrinkage for 28 days only. Coefficient error of prediction is about 30% Keywords: lightweight concrete, model, prediction, shrinkage Nilai susut jangka panjang dari beton ringan harus diperhitungkan dalam perencanaan struktur beton ringan. Penelitian ini fokus pada pengembangan model prediksi susut jangka panjang beton ringan berdasar nilai susut jangka pendek. Model ACI 209 R-92 digunakan sebagai referensi untuk memulai dan kemudian diverifikasi dan dimodifikasi dengan hasil lebih dari 9 bulan observasi sample susut jangka panjang beton ringan dengan derajat kejenuhan agregeat buatan ringan (Artificial Lightweight Aggregate, ALWA), kadar air dan semen, rasio volume/permukaan, dan waktu perawatan yang berbeda-beda. Model terakhir mungkin bisa dipakai untuk memperkirakan susut jangka panjang beton ringan dengan menggunakan data observasi susut selama 28 hari saja. Angka kesalahan dari prediksi ini sebesar 30%. Kata-kata kunci: beton ringan, model, prediksi, susut

    Item Type: Article
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Divisions: Fakultas Teknik > Teknik Sipil
    Depositing User: Arissa Aprilia Nurcahyani
    Date Deposited: 26 Apr 2014 17:26
    Last Modified: 17 Mar 2017 12:03
    URI: https://eprints.uns.ac.id/id/eprint/13420

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