The phrase "a concrete speed" is correct and usable in written English.
It can be used when referring to a specific, measurable speed in a context such as physics, engineering, or any situation where precise speed is relevant.
Example: "The vehicle was designed to reach a concrete speed of 120 miles per hour on the highway."
Alternatives: "a specific speed" or "a definite speed".
He drives a car packed with himself and 65 litres of white paint into a concrete wall at speed, before emerging in a shower of silver confetti and proceeding to croon a song about the delightful irony of "staging" such an "accident".
The road enters Millerton on South Elm Street, making a sharp turn north that necessitates a concrete barrier and lower speed limit just south of downtown.
All eight carriages of the train careered off the tracks into a concrete wall as they sped around the curve on the express route between Madrid and the port city of Ferrol on the Galician coast.
(I always think of the fact that the bodyguard in the front seat of Princess Diana's Mercedes survived that crash, which was into a concrete pillar reportedly at a speed in excess of ninety miles per hour. That's how good car safety has become).
For instance, a pursued bird would occasionally speed toward a concrete pylon.
In Kelly's spread offense Spoelstra saw some of what he desired in his own team: a concrete use of elite athleticism, incredible speed in both personnel and approach, and a firm understanding of how to use the field of play as a tool of legitimate advantage.
Changes in temperature and humidity inside a concrete has correlation with the movement speed and reaction rate of deterioration factors such as carbon dioxide and chloride ions.
Speed limits thus represent a concrete means of implementing Vision Zero and promoting road safety.
When a rainstorm briefly disabled the signaling equipment on a high-speed rail line near Wenzhou in southern China on July 23 , 2011 one high-speed train stopped on a concrete viaduct and the one behind it did not.
Ballast influence and effects of high-speed train passage on a concrete underpass structure are analysed.
