| Summary: | 碩士 === 國立臺灣海洋大學 === 河海工程學系 === 99 === Abstract
The global warming is an important issue nowadays, the civil
engineering projects consume a lot of nature resources and results in
serious environmental impacts. Pervious pavement can allow vapor
transfer, modulate the heat and rainfall control, and most importantly it
can reduce the heat island effect which reduces the demand of air
conditioner such that the global warming effect is expected to be
reduced. In addition, if the industrial by-products such as the electric-arc
furnace slag can be used to replace the aggregates then it can have two
environment-friendly influences: to transfer the industrial by-products
into resources, to reduce the demand of nature resources. Therefore, it is
our goal to use the electric-arc furnace slag to produce the pervious
concrete which can satisfy the performance requirements, safety
requirements as well as the environmental requirements.
The mechanical behaviors and permeability test are performed to
understand the basic performance of pervious concrete using the
electric-furnace slag as aggregates. In addition, color pigments are
added into the pervious concrete to change the appearance. Using
different environments, the color fading under these environments are
evaluated. Furthermore, whether the hazard materials inside the slag will
leach out is examined.
Test results showed that as the size of aggregate increased the
strength of pervious concrete reduced. As the paste filling percentage
increased the strength increased. On the other hand, the permeability
increased as the size of aggregate increased or as the paste filling
percentage decreased. The British pendulum value shows the anti-slip
property increased as the size of aggregate increased and/or the paste
filling percentage decreased. General speaking, the pervious concrete
produced by using the electric-arc furnace slag as aggregates own higher
mechanical strength, better permeability and better anti-slip property
than that using crushed stones as aggregates. Color fading is more
apparent under solar insulation than under embedded in water. No
dioxine or heavy metal leaching is observed for the pervious concrete
made by the furnace-arc slag as aggregates after 1-month immersion in
water.
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