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Rehabilitation of Concrete Slabs by Sifcon-Overlays

Conf-paper-iscr

A new means for rehabilitation of severely cracked concrete slabs is a thin overlay of SIFCON (Slurry Infiltrated Fibre Concrete). This high strength concrete with an extremely high content of conventional steel fibres (about 10 % of volume) was invented in the USA and further developed by the central laboratory...

Use of Crack and Seat in Concrete Pavement Rehabilitation a Case Study

Conf-paper-iscr

This paper describes the processes carried out in the crack and seat of an existing concrete pavement on the M40 Motorway in England.

Repair of Concrete Pavements Using High Performance Concrete

Conf-paper-iscr

When heavily trafficed concrete pavements are being renewed, the work generally has to be carried out under considerable time-pressure. A newly developed, high performance repair concrete is ideally suitable for such repair work on account of its high early and final strength as well as its durability. It is produced...

A Study on the Thin Precast Concrete Pavement for Rehabilitation of Asphalt Pavements

Conf-paper-iscr

Precast concrete pavcmrnts have the merit to supply concrete slabs of good quality. In the concstructiori of precast concrete pavements, it is not necessary to use any special machines. And the special merit is that traffics can open immediatly because of unnecessary of curing. So this type of concrete pavement...

Use of Calcium Aluminate Cement in High Strength Concrete for Fast Repair of Old Concrete Slabs

Conf-paper-iscr

The oxides present in the chemical compositioii of calcium aluminate cement, especially monocalciiim aluminates. is what gives the concrete manufactured with this type of cement its slow setting, quick hardening properties. The products generated during hydration of anhydrous phases in calcium aluminate cement. will depend on ambient conditions at the...

Whole Life Costing of Road Pavements The Way Ahead

Conf-paper-iscr

This paper considers the role of whole life costing in the management process for the road network and explores the background to current interest in England. It describes the development of the computer model, COMPARE, for assessing the whole life costs of bituminous and concrete pavement options. The key components...

Compressive Stresses in Concrete Pavements and Related Maintenance Problems

Conf-paper-iscr

The M20 motorway between Junctions 3 and 5 near Maidstone (UK) is an unreinforced pavement with joint spacings of 5m and 6m, comprising warping joints with contraction joints every 30m. The pavement was constructed at the beginning of the 1 970s. A contract for maintenance between Junctions 4 and 5...

6th International Symposium on Concrete Roads 1990 Madrid Spain

Conference-report

Session Paper Indexes, Opening Addresses, General Reports, Oral Contributions and Closings from the 6th International Symposium on Concrete Roads 1990 Madrid Spain

Precast Concrete Footway Paving Slabs That Resist Vehicular Overrun

Conf-paper-iscr

This paper presents research into the design of square precast concrete paving flags ranging in plan size between 600 mm and 300 mm square. A design method for these paving flags overrun by vehicles is presented. The method shows that the existing test procedure underestimates the paving flag strength and...

Resurfacing Flexible Pavements with Thin Layers of Concrete with Steel Reinforcement

Conf-paper-iscr

This paper describes the studies, reports and experimental sections related to this new type of pavement, not conventional, composed of a thin concrete layer, but with a steel reinforcement, in sufficient quantity to resist the traffic loads. The description goes back to the first studies and tests carried out inthe...

Payement Management For Concrete Pavements

Conf-paper-iscr

The Illinois interstate highway network includes over 1700 centerline miles of jointed concrete and continuously reinforced concrete pavements. The pavements were constructed beginning in the 1950's through the 1980's and represent a wide range in designs and traffic loadings. This large highway network is now requiring extensive rehabilitation work as...

Widening of Concrete Roads with Porous Concrete Bases

Conf-paper-iscr

This paper assesses the condition of a concrete motorway pavement in the Paris region to be widened from three to four lanes from the outside. The sigilificant drainage requirements of the existing pavement led to the provision of a new porous pavement. The design criteria applied for the typical crosssection...