Construction

"MAIA" is a slotted driveable gutter used for the drainage of motorways and airports. T.S.S. adapted the SATUJO slotted gutter method to be realized on a slipform paver. The new concept is based on the insertion of an air inflated reusable flexible tube on a slipform paver which enables the...

The airport of LiOge in Belgium has been the subject of major works for several yearjSince the country was regionalized a few years ago, the Wlloon Region has invested over 1,5 milliard Bel g ian francs. Several new buildings have already been constructed.rThe most spectacular wor, however,lTs the enlargement of...

In order to shorten the construction periods of concrete structures, PWRI and four cement manufacturers carried out a joint research to develop 5 new types of one-day concrete with the following requirements: The compressive strength of the concrete shall be 30 N/mm 2 or more one day after mixing as...

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...

A full-scale trial has been constructed in the UK in which concrete surfaces with brushed, tined bnd exposed aggregate textures have been compared with traditional hot rolled asphalt. The concrete surfaces were applied to a 250 mm thick, continuously reinforced concrete pavement laid by railmounted paving equipment. The exposed aggregate...

Fast track concrete pavement technology provides alternatives that can meet the public's demand for quick access to quality pavements. Fast track concrete pavement construction entails any method of accelerating construction. Some changes in tradicional use and consideration of certain aspects ot concrete pavement construction accompany fast track. However, fast track...

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....

Since slip-form payers were introduced in Spain in 1930, more than 1.400 km of two-lane concrete pavements have been constructed with them. A proportion exceeding 90% of the total has been provided with longitudinal finishes, using different methods: burlap, plastic-bristled brushes, metal -tined combs, etc. In all cases, surfaces with...

Concrete, which has withstood all the loads on heavily used roads for many decades, can be used again as a concrete aggegrate in road pavement construction after undergoing appropriate treatment. The example of four pavement batches prepared by 2 different companies in 1992 and 1993 on the A27 motorway m...

In many countries rullw cumpactod concrete (RCC) proved to be a success as a construction method for highly stressed industrial floors, for concrete pavements, subbases for concrete pavements and asphalt surfaces. Since 1993 the Research, Development and Consulting Department of tho Heidelberger Zement AG is attended with a research project...

rFor the reconstruction of the E31 3 motorway which was constructed with concrete slabs round about 1960, CRCP was chosen and since 1983 the exposed aggregate technique was applied there. As the conventional exposed aggregate concrete is still too noisy, in 1992 it was decided to pursue the reconstruction works...

In view of the growing need for economic methods for rural road rehabilitation and reconstruction the use of cement stabilization mixed in place with existing pavement materials (recycling of milled material) is considered to be an economic and resource-saving approach. This paper describes the preparatory works required (inspection of the...