_____ ___ 2 __ ___ 1940_ __ ______ _________ _____ ______ 150_ _____ __. _______ ______ _____ ___ _________ _____ ____ Pharon H. Bates_ ____ ____ ___ ______ ____ __ _____ ___ __ _____ ____ _______ ___ _____ (C3S) _ ________ ___ _____ (C3¬¬A)__ __ __ ___ ____. __ ___ 1943_ ____ Concrete _____ ___: ____ _____ _____ _________ ________ ____ ____ ___ _ ______ ___ __ ___ ______ ____ ___ _____.
__ ___ 1960_ __________ _____ ____ __ ___ ______ _____ _____ ___ 2 __ ______ _____ _ __ __ ____ 50 ____ C3S _ C3¬¬A __ ____ _____ __ ___ _ _____ ______ ___ ______ ____. ________ __ ____ ___ ______ ___ _____ _ ___ _____ _____ ____ __ ___ ______ __ ___ 1994_ ___ 33 ___ _____ ______ __ ______ _____ ____ ____ __ _____ ___ __ _____ _____ _____ ___ ___.

__ _________ ____ _______ ___ __ _____ ___ 2_ __ ____ ______ ____ _______ __ __ ______ ________ __ ____ ______ _____ ___ __ ______ 50 ___ (____ 1950_ _____ 1996) ____ ___ ____ _____ ___. _____ _______ ___ __ ___ __ ____ _____ _____ 72 ____ __ C3S _ C3¬¬A ___.
_____ ___ 2_ ___ __ _________ ________ __ _____ ____ __ __ ____ _____ _____ ______ _____ _ __ ___ _____ __ _____ ____ __________ __ _____ _____ ___ _____ ___. _____ ___ 2 _____ ____ _______ _____ __ ___ ____ ___ _ ___ ____ ______ _____ __ ______ _ ______ _________ ______ ________ _ _______ ____ _______ ____ _______.
__ _____ _____ ___ 2_ __ _________ __ ___ __ ____ _____ _______ _____ ______ _ ___ ____ ________ __ ____ _____ _____ ____ ____ __ ____ ____ _____ ___ 2 ______ ______ __ __ __________ _____ ________ ____.
_____ ___ 2 __ ____ ____ ____ ___ __ 32 ____ __________ _ __ _________ ___ __ ____ ___ __ 15 ____ __________ __ ____ ___ _______. __ ___ ___ __ _________ __ ______ _ _____ __ _____ ____ ____ ____ _ ________ __ ____ ___ _____ _______ ___.

_____ _________ ___ ___ 2 __ __ __ _____ ______ _____ ___ ___ _________ __ ______ __ _____ ______ ___1_ _____ _____ ___ __ ___ ____ _____ _____ _ ______ ____ ______ ______ __ _____ ______ ____ ____ _____ _______. __ ___ ___ _____ ___ ______ __ __ __ ____ __ _____ (C3¬¬A, ____ _____ _____ _____ ______ C3S) _____ _ (C2S) __ ______ _______. ______ (C3¬¬A) _____ ___ __8 ____ _____ ____ ____ __________ __ __ _____ _____ ______ ______.
___ ____ __ __ ____ _____ _____ ___ _____ ___ ___ 2_ __ _____ _____ ___ __ ______ _____ _______ _____ __ __ _____ _______ ______ __ ___ ________ ___ ______ _ _____ ___ __ __ _____ ____.

____ ___ __ ____________ _____ __ ____ _______ ___ __ _______ _____ ___ __ __ __ ____ __ ___ ____ ____ _ ___ __ _____ ______ ___ __ _______ __ __ ___ _____ ________. ___ _____ ____ _____ _______ __ ____ _______ ___ ___. _______ _____ ___ _____ __ _______ ____ ____ __ ___ ____ ______ __ ____________ ___ _____ __ ____ ______ ____ _____ _______ ____ __ ___ 1903_ _____ ___ _____ __ ______ ___ ___ ___ ____ __ ___ 1907 __ ____ ___ _____ __ _______ ___ _ ___ _____ _____. __ ______ ____ ______ __ __ ___ ____ _ ____ ___ _______ _____ ___ __ ____ ___ ____ ______ _______ _ _____ ___.

______ ___ _____ _____ ___ _____ ____ ____ _ ___ __ _____ ___ 1920 _____ ___. _____ ____ __________ ___ _____ __ ______ _ __ ___ 1930 _____ _ _ ______ __ 1960 __ ____ ____ __ _________ __ ____ ____ _ ___ ____ ____.
___ _____ ____ 450 _____
____ _____ ______ __ _____ ____ _ ____ ___ _____ __ _______ _____ _ _______ _______ ____ _____ ______ __ _______ __ ______ _____ _____ ______. _______ _____ ____ ____ _________ ____ _ ____ ____ ____ _______ _ _____ ______ _______. ___ ______ ____ __ _______ ____ ___ _____ __ ____ _______ ____ ______ ___ ___. __ ___ ___ _____ _____ __ ____ ___ __ _____ ____ _____ _________ ___.
_____ __ ____ ___ __ ____ _____ _____ _____ __ ___ _______ __ ____ ___ ___ ___.
______ ____ _____ __ __ ____ ___ __ ___ _______ _____ ____ __ _____ _____ _____ _____ _______ __ __ _______ __ ___ _____. ____ _____ _____ _______ __ ______ _____ ___ _____ ___ _____ ___ __ ____ __ ______ ____ ___ _ ___________ ______ __ _____ _____ _____ ___ ______ _____ ______ ______ ____. ____ __ ___ _____ ______ _____ ____ _____ __ __ __ _________ _ ____ _____ ___ ___. ___ _____ __ _________ ________ _ ______ ___ ___ _____ ___ (_____) ____ ___.
__ ____ _____ _____ ______ ___ _____ _________ _ ____ _____ _________ __________ ____ ______. __ ____ ____ ___ _____ _____ _____ _______ __ __ ___ ____ _____ __ ____ ____ _____ __ _____ ___ _______ ______:
Fc = (w/10) – 9
W =(fc +9) _ 10
__ _____ ____ ____ ____ __ ______ _____ 35 _________ _____ _____ ____ ____ w = (35+9)*10= 440 _______ _____ ___.
___ _____ __ __ ____ __ _______ ____ _____ __ ______ ___ __ ___ _____ ______ _____ _____ ___ _ ___ ____ ____ __ __ ___ 50 ___. __ _____ ____ ____ ___ __ ______ 35 __________ ______ ____ _____ _____ _____ ____ __ 42 = 35 _ 2/1 (_____ __ _________ ____ 9_ 9-6-1-3) ______ _____ _____ _____ ___ __ 420 __ __ ___ 50 ___ ____ __ ____ 500 _______. (__ _____ __ ________ ____ 10 _______ __ _________ ____ ___.)