THE EFFECT OF AN ORGANOMETALLIC CATALYST ON THE PROPERTIES OF PEN GRADE BITUMENS
Journal Title: Structure and Environment - Year 2018, Vol 0, Issue 4
Abstract
The research objective of the experiments and analyses described in this paper was evaluation of the effect of a specific organometallic catalyst on the properties of 50/70 and 70/100 pen (paving) grade bitumens. The catalyst under analysis is anhydrous iron (III) chloride. It was added to the bitumens at the percentages of 0.5%, 1.0%, 1.5% and 2%. The research included determination of penetration at 25°C, ring and ball softening point test and Fraass breaking point test. The tests were carried out at three states of the tested binder: non-aged, after short-term ageing (RTFOT procedure) and after longterm ageing (PAV procedure). Additionally, viscosity was determined before and after RTFOT ageing. The experimental data were used to determine the penetration index (PI) value and the plasticity range of bitumens. An increase of the bitumen hardness was observed due to organometallic catalyst addition, particularly noticeable after long-term ageing. The catalyst was found to reduce the viscosity of bitumens in the production temperature range
Authors and Affiliations
Paweł Mieczkowski
Keywords
Related Articles
- EP ID EP535021
- DOI 10.30540/sae-2018-031
- Views 74
- Downloads 0
EFFECTS OF SINGLE-LAYER TRUSS DOME GEOMETRY ON CRITICAL LOAD CAPACITY
The purpose of this article is to estimate the effect of geometric imperfections on critical loads. Special attention was paid to trusses subjected to large displacement gradients and vulnerable to stability loss due to...
TIMBER NOISE BARRIERS
The paper presents the issue of protection against the negative effects of noise by means of timber noise barrier. Timber noise barriers are described with regard to the types of construction of the acoustic panel, techn...
THE PROPERTIES OF CEMENT MORTAR WITH NATURAL ZEOLITE AND SILICA FUME ADDITIONS
This article reports the results of a study evaluating the effect of natural zeolite and silica fume on the properties of cement mortar. The study used binders in which 20% of portland cement was replaced with the pozzol...
CALCULATION OF HEAT TRANSFER IN FLUID AROUND GAS-VAPOUR BUBBLES
In this paper the mathematical model for calculating heat transfer in the fluid that surrounds the oscillating gas – steam bubble. The mathematical model takes into account the changing thermal and physical characteristi...
OCCURRENCE OF PLATINUM GROUP METALS IN THE ENVIRONMENT AND THEIR USE
Monoliths that are part of the automotive catalysts include noble metals: platinum, palladium and rhodium, which acts as a catalyst. During the operation of these devices platinum group elements (PGE) are released into t...