Concrete is an excellent conductor of heat, but it also produces heat which raises the concrete temperature while curing. Why does curing concrete do this? The simple answer is that water, aggregates (stone, sand, and gravel), and portland cement start a chain of chemical reactions called hyd...
That is, heat is liberated during both the setting & hardening process of the concrete. The concrete expands as the temperature rises, & restraint against contraction on subsequent cooling, unless properly controlled, leads to cracking. The cracks that form usually pose a durability problem, ...
With all this thinking, writing and work on resilience, what may really be needed is a better understanding of how the concept is being used to build a better world. As Moser and coauthors noted, “many practitioners urgently search for concrete guidance on how to build resilience.” Resilien...
move, displace - cause to move or shift into a new position or place, both in a concrete and in an abstract sense; "Move those boxes into the corner, please"; "I'm moving my money to another bank"; "The director moved more responsibilities onto his new assistant" turn - change orien...
The curricular requirements are concrete statements of expectations for the AP Chemistry course. These include requirements for the types of materials teachers must use in class, the structural framework of the course, the opportunities students should receive, and the percentage of class time devoted ...
Most EVs today pack batteries between 40 kWh and 100+ kWh. Let’s get concrete: A Tesla Model 3 Long Range (75 kWh) can go about 358 miles on a full charge—enough for a road trip from London to Edinburgh. The Ford F-150 Lightning’s 131 kWh battery? It’ll tow a trailer for ...
As affected fund managers rely on subjective evaluations, a firm’s commitment to specific environmental targets or concrete emissions-reduction actions can moderate the managers’ risk assessment. Indeed, we find that affected fund managers are less likely to divest when portfolio firms disclose ...
and not the other way around.In pros,the worst thing one can do with words is surrender to them.When you think of a concrete objec,you think wordlessl,and the,if you want to describe the thing you have been visualizing you probably hunt about until you find the exact words that seem ...
Those of us who have rooms on that side of the dorm used to have a view of the fields with trees and grass but now it’s all dirt and concrete.And when the structure is completed, there will be no view at all. All we’ll be able to see is an ugly parking garage.Ms. Miller:...
(1929)—links the four areas of (1) “concrete experience/feeling”: a new experience is gained or an existing experience is reinterpreted; (2) “reflective observation of the experience”; (3) “abstract conceptualization/thinking”: the reflection helps to raise a new idea or to modify an...