Hoover Dam: Difference between revisions

</ref> To solve this problem the dam was built in a series of interlocking trapezoidal concrete pours. To further cool the concrete each form contained cooling coils of 1&nbsp;inch (25&nbsp;mm) thin-walled steel pipe. River water was circulated through these pipes to help dissipate the heat from the curing concrete. After this, chilled water from a refrigeration plant on the lower cofferdam was circulated through the coils to further cool the concrete. After each layer had sufficiently cooled, the cooling coils were cut off and pressure grouted by [[pneumatic]] [[grout]] guns.<ref>http://www.riverlakes.com/hoover_dam_info.htm</ref> [[John TheL. concreteSavage]] iswho still curingsupervised and gainingdesigned inthe strengthconstruction asof timethe goesdam onwas also responsible for developing the process used to cool the concrete.<ref name="nasbio">http://wwwbooks.riverlakesnap.comedu/hoover_dam_infohtml/biomems/jsavage.pdf John Lucian Savage Biography by Abel Wolman & W. H. Lyles, National Academy of Science, 1978.htm</ref>The concrete is still curing and gaining in strength as time goes on.