Building Project Information. On May 2, 2017, the New Bremen Schools Board of Education will be placing a bond levy on the ballot for a new K-8 building. You can find more information about the building project by using any of the Building Project links within the red navigation bar above or by clicking here.
Bitumen is the thickest form of petroleum there is, made up of 83% carbon, 10% hydrogen and lesser amounts of oxygen, nitrogen, sulphur, and other elements. It is a natural polymer of low molecular weight: at lower temperatures it is rigid and brittle, at room temperature it is flexible, at higher temperatures it flows.
On the other hand, bitumen with low penetration grade or hard bitumen has less low temperature cracking but more rutting resistance [ 1, 2 ]. This alteration can be related to the complex rheological behavior of bitumen at different loading times and temperatures [ 3, 4 ].n the other hand, bitumen with low penetration grade or hard bitumen has less low temperature cracking but more rutting resistance [ 1, 2 ]. This alteration can be related to the complex rheological behavior of bitumen at different loading times and temperatures [ 3, 4 ].