A laboratory investigation was conducted to study different types of p
olymer-modified asphalt with regard to low temperature behaviour. The
thermal stress restrained specimen test (TSRST) was used to assess the
disposition of asphalt mixtures to cracking at low temperature. Five
polymer modified bitumens and three mixture types (dense graded, stone
mastic and porous asphalt) were investigated. In addition, three diff
erent ''gussasphalt'' mixtures were analysed. Based on the results obt
ained, it was concluded, among other things, that (1) the polymer type
, mixture type and degree of ageing influence the low temperature prop
erties of asphalt mixtures; (2) the increase in fracture temperature d
uring ageing is dependent on mixture and polymer type; (3) the use of
modified binders may improve the low temperature properties of ''gussa
sphalt'' mixtures.