Asphalt Technology HW Lecture 5 From the thin film oven test, it was found the following results: Original Pen No. (from penetration test) Weight before heating (gm) Weight after heating (gm) Container No. 1 131 dmm 50.3 48.8 2 49.7 48.2 Find the loss in weight due to the effect of heat and air and determine the retained penetration if the penetration value of residue after thin film oven test was 112 dmm. Then compare the results with standards (Specification limits (EN 12607-1): Change of mass, ± 0.8% and retained penetration 2 43%. Solution: 1- Find the average weight before and after heating as shown in the following table: W1: Average weight before heating (gm) W2: Average weight after heating (gm) 2- Find the loss in weight of residue after thin film oven test is reported as the percentage by mass of the original sample = W1-W2 100 sample has an overall mass (loss or gain) W1 ? (> or or53 >50 246 >43 >37 Change of mass fabsolute value) hcrease in softening point - severity 1 s0.5 <0.5 <0.5 <0.5 S0.8 <0.8 s1.0 <8 <8 <8 <9 <10 <11 or or or or or or or or hcrease in softening point - severity 2 a Flosh point Solubility Panetration index C s10 s11 s11 s12 s12 EN ISO 2592 °C 2240 2240 2240 >230 >230 2230 >230 >220 EN 12592 299.0 299.0 299.0 299.0 299.0 299.0 299.0 299.0 Annex A b -1.5 to +0,7 Dynamic viscosity at 60°C Breaking point (Fraass) Kinematic viscosity at 135 C EN 12596 Pas >440 >260 >225 >175 >145 >90 >55 >30 EN 12593 <-5 <-7 <-8 <-10 <-12 <-15 EN 12595 mm/s 2530 2400 2370 2325 >295 2230 2175 2135 France Belgium The Netherlands Germany UK Switzerland Czech Republic Poland ae ae Y