- 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.
To seal crack in a concrete slab: 1  Remove any debris or loose concrete in the crack using a screwdriver, followed by a wire brush. 2  Use a broom or leaf blower to clean out the crack.3  Fill the crack with concrete repair caulk, such as Polyurethane Concrete Crack Sealant from Quikrete.atch this video to find out how to repair and seal cracks in a concrete slab, such as a driveway, to prevent water from seeping beneath the slab and causing the soil to erode.