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Cold Mix Asphalt
Kolesniková, Simona ; Valenta, Jakub (referee) ; Šperka, Pavel (advisor)
The diploma thesis deals with the issue of cold asphalt mixtures, which are commonly used for temporary repairs of potholes on roads, especially in winter months. The theoretical section describes some of the world´s researches on this topic. This section also includes manufacturers of cold asphalt mixtures in the Czech Republic and products available on the Czech market are presented. The practical part describes the properties of the materials used, the results of laboratory testing on test speciments made of cold asphalt mixtures and their comparison with the properties of asphalt concrete for wearing course. The effect of hot mix asphalt temperature during compaction on selected properties i salso analysed.
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Re-using Asphalt Reinforcement Geogrids in Asphalt Mixtures
Provazník, Petr ; Sadil, Dominik (referee) ; Šperka, Pavel (advisor)
The bachelor thesis deals with the topic of re-using reinforcing fiberglass grid which are applied to asphalt layers. The theoretical part describes the general properties of reinforcing materials which includes reinforcement grids and also reinforcing dispersed fibres. There is also a characterization of reclaimed asphalt pavement and its current use. The practical part investigates the properties of reclaimed asphalt pavement which contains milled fiberglass grids. For this purpose several sets of test specimens were made of reclaimed asphalt pavement with proportion of milled fiberglass geogrids. The individual properties of the samples were compared with the initial set which did not contain milled grids. Another comparative sample was R-material to which were added Forta-Fi reinforcing fibers. Functional tests ITS and stiffness were performed on the made samples.
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Effect of the use of dispersed fibres on the properties of asphalt mixtures
Provazník, Petr ; Bohuš, Štěpán (referee) ; Šperka, Pavel (advisor)
Diploma thesis deals with the topic of using dispersed glass fibers in asphalt mixtures. The theoretical part describes the general properties of glass fibres, their production and use. It also describe issue of dispersed fibers which are currently used as an additive in asphalt mixtures. The practical part deals with behaviour of asphalt mixture which contains dispersed glass fibers. For that reason several test sets with different glass fibre dosages were made. Then individual properties of these test sets were compared with a reference mixture without fibres. The workability of the glass fibres in the asphalt mixture was assessed and after that selected laboratory tests were performed on the produced asphalt mixture namely: water resistence (ITSR), stiffness, wheel tracking, resistence to fatigue.
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Re-using Asphalt Reinforcement Geogrids in Asphalt Mixtures
Provazník, Petr ; Sadil, Dominik (referee) ; Šperka, Pavel (advisor)
The bachelor thesis deals with the topic of re-using reinforcing fiberglass grid which are applied to asphalt layers. The theoretical part describes the general properties of reinforcing materials which includes reinforcement grids and also reinforcing dispersed fibres. There is also a characterization of reclaimed asphalt pavement and its current use. The practical part investigates the properties of reclaimed asphalt pavement which contains milled fiberglass grids. For this purpose several sets of test specimens were made of reclaimed asphalt pavement with proportion of milled fiberglass geogrids. The individual properties of the samples were compared with the initial set which did not contain milled grids. Another comparative sample was R-material to which were added Forta-Fi reinforcing fibers. Functional tests ITS and stiffness were performed on the made samples.
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