Road / Bridge Control Joints
Control joints (often confused with expansion joints) are cut into the concrete or asphalt, and are different from expansion joints as shown in the photo. The joints are cut into the structure at regular intervals allow cracking to occur in a controlled fashion. Road control joints can be sealed with hot tar, cold sealant (such as silicone), or compression sealant (such as rubber).
Read more about this topic: Expansion Joint
Famous quotes containing the words road, bridge, control and/or joints:
“Down the road someone is practicing scales,
The notes like little fishes vanish with a wink of tails,”
—Louis MacNeice (1907–1963)
“Like a bridge over troubled water
I will lay me down.”
—Paul Simon (b. 1949)
“The child knows only that he engages in play because it is enjoyable. He isn’t aware of his need to play—a need which has its source in the pressure of unsolved problems. Nor does he know that his pleasure in playing comes from a deep sense of well-being that is the direct result of feeling in control of things, in contrast to the rest of his life, which is managed by his parents or other adults.”
—Bruno Bettelheim (20th century)
“To round that shell’s elaborate whorl,
Adorning every secret track
With the delicate mother-of-pearl,
Made the joints of Heaven crack....”
—William Butler Yeats (1865–1939)