Zeeshan Ahmed; Atif ul Haq; Ihtesham Rafiq; Muhammad Yaseen; Supervisor Muhammad Iqbal
(MCE-NUST Risalpur Campus, 2008)
Concrete is usually placed in a structure in stages or lifts, one on top of another.
thus by the time the results of the 28-day test, or even the 7 day test, are available a
considerable amount of concrete may overlay ...