| Summary: | 碩士 === 國立交通大學 === 土木工程學系 === 84 === Nowadays the rapid growth of the construction, in every
respect, of our country result in the shortage of
engineering resources. Utilization of great amount of sand
from rivers makes river sand defficient day by day. On the other
hand, Taiwan is an island and it is around by the seas. There is
a tremendous amount of sea sand. As for the sea sand, it
contains much salt and chloride ion. As engineering resources,
sea sand has the bad effect upon the guality of civil
engineering. Therefore, it is the essential purpose of this
paper that aim at the idea to resolve the problem of chloride
ion containing concrete. Addition of
chloride ion in different kind of concentrations into concrete
in order to understand it*s influence upon the compressive
strength and dynamic modulus of elasticity of concrete is
the essential aim of this paper. Addition of slag to replace a
part of cement in concrete might increase the durability of
concrete. Water soluble chloride process and acid soluble
chloride process are the common used methods for the
determination of chloride ion concentration in concrete.
These methods enable the chloride containing concrete that it
might be used under proper condition in order to resolve the
problem of shortage of sand supply in civil engineering.
It also indicates that these two properties have alike
developing tendency.The ratio of chloride ion
concentration in the determination by water soluble chloride
process and acid soluble chloride process may decrease
smutaneously according to the elongation of time. But the sample
that coming from water cement ratio or water curing
process shows much lowing concentration of
chloride ion.
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