1,721,137 research outputs found
UTILIZZO DI SCORIE DI ACCIAIERIA NEL CONFEZIONAMENTO DI CONGLOMERATI BITUMINOSI PER APPLICAZIONI SPECIALI IN PAVIMENTAZIONI STRADALI
No full textLaboratory analysis of hydraulically bound mixtures for road pavements made with waste foundry sand and steel slags
No full textMechanical characterisation of bituminous mixtures with bottom ash from municipal solid waste incineration (MSWI)
No full textCreep Modulus of Asphalt Mixes Determined in Uniaxial Cyclic Compression Test with “Some Confinement
No full textExperimental evaluation of hydraulically bound mixtures for road foundations made with steel slags
No full textThis paper reports the results of a study conducted at the Experimental Road Laboratory of the University of Padova, to design cement bound granular mixtures for road foundations, characterized by a stone skeleton made exclusively with steel slags, of the Electric Arc Furnace (EAF) type, produced in Italian steel plants. The physical-geotechnical properties of four different EAF steel slags have been evaluated, by means of the most relevant laboratory procedures used in the road technical sector, as well as the leaching behaviour of the granular materials. Hydraulic bound mixtures, characterized by the 100% content of EAF steel slags, have been studied in terms of Proctor, compression and indirect tensile tests. The results have clarified that the four steel slags investigated present selective applicability, dependant primarily on the appropriate grading size distribution. For one of them, the associated hydraulically bound mixtures have widely met the main Italian Contract Specifications, for both the test carried out (compression and indirect tensile strength at 7 days equal to 3.70 MPa and 0.40 MPa respectively), while for other two EAF steel slags, partially satisfactory results have been achieved, but still really promising and encouraging. The investigation has demonstrated that the recycle of the EAF steel slags, in total substitution of the natural aggregates for the road foundations mixes, is feasible, but has to be carefully evaluated and designed
Indagine sperimentale su conglomerati di tipo SplittMastixAsphalt additivati con paraffina sintetica FT
No full textThe use of construction and demolition aggregate in unbound sub-base and bituminous bound road base layers
No full textThis paper gives the results of a theoretical-experimental study on the composition, performance and mechanical characteristics of high modulus mixes with EVA polymer added.
The study aims to provide design solutions for structural strengthening of flexible pavements for maintenance of road and airport infrastructures.
The mix-design is based on the classical Marshall methodology, plus a gyratory compactor, which has provided useful information on the shear strength of the mixtures and allowed the EVA-added bituminous concrete to be characterised in terms of workability.
A comparative numerical analysis based on the BISAR code has led to alternative design solutions being identified, based on the use of EVA-added mixtures, which make a thinner pavement possible
Mix design and mechanical evaluation of hydraulically bound mixtures made with waste foundry sand and steel slags
No full textUse of crumb rubber in hot-mixed asphalt made by the dry process: mechanical characterisation and performance evaluation
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