Title: Vibration Consistency Prediction Model for Roller-Compacted Concrete (RCC)

Author(s): Jittbodee Khunthongkeaw and Somnuk Tangtermsirikul

Publication: Materials Journal

Volume: 100

Issue: 1

Appears on pages(s): 3-13

Keywords: consistency; fly ash; roller-compacted concrete; vibration.

DOI: 10.14359/12457

Date: 1/1/2003

Abstract:
During recent years, fly ash concrete has become popular in the concrete industry in Thailand, with its expected consumption in the year 2001 exceeding 1.2 million tons from the total annual production of about 3 million tons. Recently, a huge roller-compacted concrete (RCC) project (Ta Dan Dam) was started in Thailand—the volume was considered the current largest in the world at 5,000,000 m3. One of the main problems still concerns the mixture proportioning, however. Various parameters influencing the consistency of RCC are used for predicting its consistency. Those parameters are the ratio of paste volume-to-void content of densely compacted aggregate phase, free water content, and physical properties of solid materials. A model for predicting Vebe time of RCC was formulated and verified with the actual results. It was found that this model could be used to predict the Vebe time of RCC with satisfactory accuracy.