he Utrecht-Amersfoort motorway (A28) was constructed with onreinforced, lightly brushed cement concrete with dowels. r1easurements taken in 1987 indicated that the level of noise nconvenience to the surrounding area exceeded the legally per-ritted standard. In 1988 a 3,500 m stretch of the road was firstround until it was even, then...
Low-Noise Surfacing on Concrete Roads
Noise Reducing Concrete Surface. a Model For Assessment
me of the attributes required from a pavement is a noise redu-ing effect. But an optimization of this attribute without con-idering other important requirements as stability and pos-ibilities for patching, reinstatement and environmentaliaintenance is contrary to all national economic principles. Inact it is the road user who is running the...
5th International Symposium on Concrete Roads 1986 Aachen Germany
Closing ceremony from 5th International Symposium on Concrete Roads 1986 Aachen Germany
5th International Symposium on Concrete Roads 1986 Aachen Germany
Indexes, General Reports and Additional Contributions from 5th International Symposium on Concrete Roads 1986 Aachen Germany
5th International Symposium on Concrete Roads 1986 Aachen Germany
Index of Papers and Opening from Addresses from the 5th International Symposium on Concrete Roads 1986 Aachen Germany
Noise protection walls (Design and construction)
Since 1972 between 250,000 and 300,000 m2 of acoustic screening (noise reduction) barriers have been built in France, i.e., 70 - 80 km of such structures of medium height (2 - 6 m), along the roads. They have been installed under a policy of both road and rail traffic noise...
Construction of concrete noise protection barriers
The finalizing of the Federal German-law relating to pollution and nuisance control (Bundesimmissionsschutzgesetz) in April 1974 was an important step in the implementation of active noise control measures. The "Guidelines for traffic noise control on Federal interregional highways" published by the Federal German Minister of Transport in August 1983 establishes...
Use of residues from the incineration of domestic wastes and other residual matters mixed with cement in road construction
The incineration of household refuse in the Federal Republic of Germany yields up to about 3.5 million tonnes of residual waste per year. About 90% of this consists of grate ash and about 10% of fly-ash, the latter mostly being collected in electrostatic precipitators. The grate ash consists chiefly of...
Use of slags in concrete pavements and sub-bases
Industrial by-products have long been used in French road construction. Experience gained over the last twenty years with che extensive use of by-product gravel-sand stabilized with hydraulic binders as a sub-base material, as well as the results of highway engineering practice in neighbouring countries like Germany and Belgi~prompted the LPC...
The use of concrete and masonry waste as aggregates for concrete in the Netherlands
In che paper, results are presented of laboratory research and applications in practice of concrete and masonry waste as aggregates for concrete. In a thorough study the amounts, composicion and relevant properties of the waste were investigated. Based on the results of tests in the laboratory and of full scale,...
Use of cement-bound industrial wastes and recycled materials in earthworks and road construction
For environmental reasons, it is becoming increasingly difficult and eherefore expensive to find fresh sites for wasee disposal. Investigations have shown that coal fly-ash, refuse incinerator grate ash, demolished road asphalt and concrete rubble can, when suicably treated with cement, be economically reused for road construction, for which purpose they...
Use of new road materials (industrial wastes) in mixes for sub-bases
The replacement of traditional aggregates (limestone) by crushed blastfurnace slag or LD steelmaking slag in lean concrete and in cement-stabilized hardcore was investigated. The effect of adding fly-ash to mixes of the conventional type was also studied. For mixes of equal composition (in parts by volume) and equal grading (by...