Studies are being carried out on the influence of pharmaceutical waste at the Ukrainian University of Transportation, a especially the liquid waste on the physicomechanical 3roperties of cement concrete
Pharmaceutical Waste
High-Quality Concrete with Recycled Aggregates
New laboratory and field investigations showed that it is possible to achieve durable concrete by using recycled aggregate above 4 mm from old pavements with cracks but no frost- or concrete structure deterioration. The concrete compressive and tensile strengths were slightly higher and the cracking sensitivity was slightly lower for...
Influence of Temperature During Curing on Stresses in Concrete Pavements
In concrete pavement placed during hot weather unfavourable Lelilpelatuies Lall causc high stresses and therefore the formation of cracks. In pavements which are placed in the morning of a hot summer day, after a few hours very high temperatures at the surface and still low temperatures at the bottom of...
Environmental Impact of Concrete and Asphalt Pavements
As part of a Nordic R & D project on sustainable concrete technology initiated by the Nordic cement industry, a study has been carried out by VTT, the Technical Research Centre of Finland, to assess the environmental impact of concrete and asphalt pavements. The assessment is based on the estimation...
Sand-Rich Concrete – An Alternative to Ordinary Concrete
The natural raw materials gravel and sand are worldwide mined on a large scale. In many areas of Germany natural resources contain 70 % (and more) sand and less than 30 % gravel. Therefore in particular very fine sand often cannot be used and must be stored in waste disposal...
On the Use of Perious Cement Concrete for Wearing Courses and Its Efficiency Against the Noise Emitted by Heavy Trucks
The experiment presented here has been carried out within the context of a partnership research contract signed between the Road Directorate (French Ministry of Civil Equipment) and the GTM Construction Company. The autors are thanking both partners, and the following organizations or companies, which contributed with equal success to the...
K-Values of Fly Ash Concrete of Equal Low Slump
The paper presents a general principle for the determination of the k-values for fly ash concrete and the results obtained on concretes with cement contents of 200, 300 and 400 kg/rn 3, fly ash cement ratios of 11%, 25%, 43%, 67% and 100% and equal slump of 30 mm. The...
Reconstruction of Bituminous Paved Rural and Urban Roads in the Federal Republic of Germany Using Mix-In-Place Recycling with Cement
Mix-in-Place Recycling with cement stabilization is an economical and environmentally friendly method for the reconstruction of damaged asphalt roads and ways. The most remarkable characteristic of this method is that the entire existing road construction material can be used again for the new road pavement. This essay contains descriptions of...
Influence of Fly Ash on Abrasion Resistance of Concrete for Roads Pavements
In Portugal, fly ash is often used as a cement replacement material on concrete for road pavements. The percentages of replacement generally range from about 30% in the top pavement layer up to 50% in the bottom layer. A study was carried out for evaluating to what extent such amounts...
Roughness Condition and Rule Quality of Bicycle Lanes
The Netherlands are a flat country, where the bicycle is a good alternative for short and midrange transportation. The government tries to encourage the use of a bicycle by improving the bicycle infrastructure, thus trying to reduce movements by car. Bicycle pavements are managed at a local or county level....
Verification of the Acting of the Recycled Building Material for the Production of Rigid Pavements in Concrete of Portland Cement
The objective of the present work is the study of the technical viability of the use of refused material of building construction like aggregates for concrete roads. The first stage consisted of the physical characterization of the aggregates obtained through the grinding, followed by a study of the granulometric composition...
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...