- The Tu-144 supersonic transport was the fastest commercial jet plane at Mach 2.35 (1,555 mph, 2,503 km/h). It went into service in 1975, but soon stopped flying. The Mach 2 Concorde aircraft entered service in 1976 and flew for 27 years. - Wiki â Mark Mayo â¦ Apr 6 '13 at 21:39
There are several ways to address expansion joints and cracks as a result of shrinkage. The most obvious way to fill expansion joints is to fill the joint with a flexible joint sealant.The most cost effective joint sealants are usually single component urethane joint sealants. The may be supplied in caulking tubes or in bulk packaging.he most obvious way to fill expansion joints is to fill the joint with a flexible joint sealant. The most cost effective joint sealants are usually single component urethane joint sealants.
Concrete. To fill hairline concrete cracks, you can usually use a patching compound to make the repair. First apply a concrete bonding adhesive or primer/additive to create the best bond possible between the old surface and the patching material.Use an old or inexpensive paintbrush to work the liquid into the surface.e sure to keep the filler in the crack, not on the driveway surface. For cracks Â½ to 2 wide, fill the crack with non-porous foam backer rod material before applying crack filler. For potholes or cracks wider than 2, you'll need to do a little more repair.