Michael Clark

4 Questions 364 Answers 0 Followers

Questions related from Michael Clark

When coal fired power plants are eliminated, what will be the source of fly ash for concrete?

Fly ash is used in concrete to help eliminate the alkali - silica reactivity between portland cement and the surface of the aggregate. Alkali - Silica reactivity can turn concrete highways into...

28 January 2020 6,209 3 View

Has any state or nation successfully solved the problem of settlement of approach slabs and their supporting sleeper slabs?

I would like to know what works and what does not work to reduce or eliminate this problem.

03 July 2014 3,647 2 View

Does anyone know if there is a comprehensive list of the location, ages, and elevations of paleo-reefs ?

Reefs on continents give an indication of shallow marine environments, that are near the shore. The array of the values for the reefs maximum elevation, and ages should indicate changes in sea...

15 December 2013 5,395 2 View

Has anyone considered making a telescope mirror by evacuating a space between two sheets of glass?

An evacuated space between two sheets of flat glass that are filled with a plastic resin and also evacuated to form a negative pressure environment that will curve the glass could provide an...

21 February 2013 6,387 17 View