Roller Compacted Concrete

The acceleration wave of the vibrating compactor under work is disturbed from the sine wave. In this research, the disturbance of acceleration wave was defined as degree of disturbance WD, the relation between compacting time, hearing capacity of ground, consistency of concrete, compaction degree of concrete, strength of concrete and...

This paper presents the main features of roller compacted concrete (RCC) pavements for low-volume roads constructed in the Spanish Basque Country since 1992. RCC is produced in ready-mixed concrete plants and placed by local asphalt contractors. Due to the small thicknesses (15-18 cm) of these works, RCC layers can be...

A 7 Lu 8% reduction in compactness of air-entrained concrete with respect to the maximum one is a positive factor from the frost, -salt resistance standpoint, nevertheless, such compactness of roller compacted concrete can lead to dangerous results. The existing methods of controlling the compaction rate (measuring the volume of...

Roller compacted concrete (RCC) pavements are expected to be an economic and rational concrete pvPmAnt system that will become increasingly popular in Japan. The maximum thickness of a RCC slab completed in one layer is limited to 25 cm because of limitations in the compactability of the concrete and the...

Roller compacted concrete pavements (RCCP) are favourable for port yards. To develop the design, both the bearing capai-ity and the load transfer efficiency at the joints were studied. An experimental pavement with two different RCCP structures was built: namely, one that follows the ordinary design method for port yards consisting...

Roller compacted concrete (RCC) began to be used in Spain in 1984 on roads bearing heavy and medium traffic. Up to now more than 250 km of RCC pavements have been constructed. A significant portion is subjected to the combined effect of heavy traffic and servere temperature gradients. Joints are...

This study was carried out to examine the correlation between roller compacted pavement concrete mixes and the compactability with surface vibrator. Two factors are significant for the consistency of the concrete: the sand/cement ratio of the mortar component by weight and the coarse aggregate/ mortar ratio by volume. The most...

A roller compacted concrete pavement (RCCP) reinforced with continuous steel bars was recently developed at the New Tokyo International Airport. The construction is fast and the effectiveness of load transfer at cracked sections of the continuously reinforced concrete pavement is high. This RCCP was built in two layers. Steel bars...

A study has been conducted in order to determine the influence of a wide range of factors on the properties of roller compacted concrete (RCC): coarse aggregate type and content, addition of fly ash, chemical admixtures type and quantity, technologies of manufacturing and compaction, tranportation time and concrete curing. The...

This article describes the Slovenian experience with PCC technology on four different sites with different requirements and for different purposes. The job mix formulas and the different application possibilities are described. Paver compacted concrete (PCC) is a relatively new construction method which was evaluated from roller compacted concrete (RCC) technology....

Colombia is a developing country with enormous difficulties for the implementation of new technologies due to their introduction costs and the positioning of existing ones. Despite the constant academic efforts to keep it alive, the construction of concrete pavements has been asleep for years as a consequence of the obsolescence...

This paper describes the investigation of the time dependent behaviour of roller compacted concrete pavements (RCCP) in port yards resulting from drying shrinkage and thermal stresses, and sedsuridi effects on the joint width. Test results show that even with a joint spacing of 8 m, approximately 1 N/mm2 of thermal...