The purpose of this article is to provide the administration and the designers with an effective, workable flow-chart so that the quality of the road is priority number one and that the execution problems are manageable. Based on the experience during most recent jobs COPRO observed interesting evolutions and missing...
Guidance to Quality Management of Road Construction
Influence of Curing on the Properties of Concrete Pavements
In extensive examinations several measuring methods and parameters were tested and compared, in order to evaluate the effectiveness of different curing compounds and methods. Starting with basic tests concerning the time-dependent water-loss of concrete and the optimal application time of curing compounds, a simple test using a litmus-paper was developed....
Rapid Hardening Fiber Concrete for Airport Pavement Repair
Repair of concrete airstrips is a matter of particular interest. Besides being costly, it obstructs airport operations. Consequently, materials and construction procedures must comply with technical and operational demands. This article describes the development and application of a cementitious rapid hardening binder and a corresponding polymer fiber concrete for the...
Paver-Compacted Concrete, a New and Innovative Method of Constructing Road Pavements Exposed to Heavy Traffic
The world-wide debate on suitable economic measures to improve mobility and energy efficiency has also led to the development of new and innovative construction materials and methods as a way of solving the problem of how to pave roads and trafficked areas economically. One such innovation is paver-compacted concrete, or...
Concrete Pavement Without Dowel Bars
The joint system presented herein takes advantage of the natural development of shrinkage in concrete to induce the formation of joints along the projections of previously placed system devices. Such system induces in an in-situ concrete pavement an efficient interlocking indentation among the slab elements resulting from the shrinkage phenomenon....
Constructing High Performance Concrete Pavements Using the FHWA Hiperpav Systems Analysis Software
Sponsored by the U.S. Department of Transportation, Federal Highway Administration, HIPERPAV (HIgh PERformance concrete PAVing) is a software tool capable of predicting the early-age behavior of concrete pavements. HIPERPAV successfully integrates materials, pavement design, climate, and construction operations into an easy to use Windows-based software package. Using a systems approach,...
Concrete Roads Constructed on the Lincent Land Reparcelling Site
The concrete road technique has been used for many years for the creation or improvement of roads in land reparcelling project areas. The designs used for these roads have had to develop for a variety of reasons: 1. Vehicles are becoming increasingly heavy. Semi-trailer rigs carry crops directly from the...
Roads of the Future Issues, Technologies and Potentials of Concrete PF2E Road System as an Example
The long service life of cement concrete roads, as well as the new objectives of contracting authorities taking into account significant extensions in hypotheses on the design service life of roads, streets and runways, oblige the technical civil engineering community to plan much more than in the past for the...
Working Mechanisms of Air-Entraining Agents
From some job sites it was reported that the air void content of the hardened road concrete was considerably higher than that of the fresh concrete. Initial investigations in the Research Institute with six air-entrainers based on synthetic and natural active agents showed that a substantial increase in air content...
Modified Concrete by Replacing Part of the Coarse Aggregates by Milled Bituminous Materials of the Same Grading
The properties of concrete mixes produced by replacing the coarse aggregates by milled bituminous materials of the same grading are studied in the laboratory. The milled bituminous material used comes from reclaimed asphalt concrete produced in road maintenance works. The properties investigated are compressive and flexural strength, modulus of elasticity,...
A Feasibility Study of Incorporating Bottom Ash in Roller Compacted Concrete Pavements
Roller compacted concrete as a pavement material has been gaining acceptance over the past years. RCC can be of particular interest in base course applications combing attractive cost with easiness of construction. RCC is a friendly pavement material to incorporate by-products of industries such as bottom coal ash. This paper...
Prestressed Concrete Pavements
In this paper the results of laboratory investigation preceding realization of continuous prestressed concrete pavement at Krakow Balice Airport are presented. Three concrete slabs of dimentions 1.0 m × 3.6 m × 0.16 m were realized in the Laboratory of Technological University of Krakow. Two of them were prestressed...