Applicability of precast concrete pavement (PRCP) with doweled joints to tunnel roads was investigated. The effects of subbase and dowel bars at transverse joints on the mechanistic behaviors of PRCP were examined. The thermal stresses in PRCP were also discussed. Fatigue and faulting analyses were conducted to compare the fatigue...
Abrasion Resistance of Roller Compacted Concrete (RCC)
The scope of this work is the behaviour under abrasion of different concrete (RCC) made with limestone, schist and granite aggregates. Binder contents (cement and fly ash) ranging from 90 kg/rn 3 to 190 kg/rn3 were tested. Small concrete slabs 60x60x40 mm were cut from 150000 mm cylinders prepared according...
The Actuality & Prospect of RCCP in China
The research on RCCP was launched in early 80' in China. The laboratory test started in 1981 followed by the first sectioii of field experimcnt road in 1982. And then extended resmrch was carried out in 1983 and 1984. A few years later in 1988, the research on Cement Concrete...
Continuously Reinforced Concrete Roadbases
In the Netherlands Rijkswaterstaat is the authority in charge among others of the construction of highways. The department Utrecht of Rijkswaterstaat has chosen a continuously reinforced concrete roadbase for the construction of the 7 km long new highway scction between the cities of Bunnik and I Jtrecht. This choise was...
Concrete Requirements for Ultra-Thin Concrete (Whitetopping) for Flexible Pavements
Whitetopping solutions for old flexible asphalt pavement overlays have been a challange for highway agencies and designers in the recent past years, with special regards to ultra-thin concrete overlays, also called by ultrathin whitetopping (UTW). Considering the needs of full bond between the UTW and the old asphalt concrete (AC)...
Whitetoppings – Long Term Performance and Recommendations
Field tests have been carried out with thin, high strength concrete overlays (whitetoppings) placed on top of the milled asphalt pavement The aim is to find methods to restore rutted asphalt pavements and iliclease their rutting resistance. The whitetopping was limited to 70 mm. Both plain and steel fibre reinforced...
Vibration Absorbing Concrete Pavements
The evaluation and control of vibrations induced in the environment by the road traffic is a problem of increasing concern mainly in urban areas. Several solutions are under development to define pavement structures capable of absorbing traffic vibrations so to reduce the impact on the environment surrounding the road infrastructure....
Research Into Concrete Block Paving with Realistic Load of a Heay Vehicle Wheel
Within the scope of a research project different block pavings have been studied under realistic load of a road test machine considering the influence on the resistance to vertical deformations and horizontal displacements.
Eco-Concrete Block Paving
Eco-concrete block paving is considered to be a significant innovation for environmentally beneficial pavements in residential areas. The objective is to infiltrate rainwater on the spot. The use of permeable concrete block paving is restricted by its bearing capacity and the existing soil. The paper deals with fundamental rules, design...
Consideration of Some Factors Affecting the Competitiveness and Potential for Future Use of Concrete Roads in the UK
Although concrete roads have traditionally been used in the construction of a small part of the UK network, there is continuing interest in the potential for concrete pavements. Consideration of the way in which whole life cost (WLC) may influence selection of the most competitive form of concrete structure when...
A Contribution to Concrete Pavement Analysis
The concrete pavement structure consisting of the M40 concrete slab 160 to 240 mm in thickness and the cement-stabilized base course (CSB) 150 to 250 mm in thickness, is analyzed in the paper. The pavement slab is not reinforced and the spacing between expansion joints was selected in such a...
The Use of Slipform Technique for Traffic Infrastructure Constructions
Slipform technique can be used for construction of concrete pavements for roads, but also for construction of aircraft movement areas, industrial surfaces, secondary traffic areas, and rigid railtrack systems made of conciele. Slipform technique can be used for construction of concrete safety barriers, cable troughs, curbs or gutters, too. If...