MATS FOR USE IN PAVED SURFACES

摘要

A paving mat (14) for use in a paved surface (10) includes a fibrous mat in the form of a paving mat. The fibrous mat includes a fibrous matrix conta ining a mixture of polymer fibers, first mineral fibers having a first media n length, and second mineral fibers having a second median length that is di fferent from the first median length. In another embodiment, the paving mat includes a fibrous mat including a fibrous matrix which is bonded together b y a binder. In one embodiment, the binder is a mixture of different binders. The fibrous matrix includes a mixture of mineral fibers in an amount within a range of from 61 wt% to 85 wt% and polymer fibers in an amount within a r ange of from 15 wt% to 39 wt%. The polymer fibers have a melting point great er than 320°F (160°C). The mat has a stiffness in the machine direction with in a range of from 65 g-cm to HO g- cm. The mat has a load-elongation behavi or such that when the mat is subject to tensile stress, the mat achieves at least 90% of its ultimate load at an elongation not greater than 5% of the s pecimen length in the direction of applied stress. Another embodiment of the paving mat is made with a carboxy-modified acrylic binder.