Title: Application of Taguchi’s approach in the optimization of mix proportion for Microwave Incinerated Rice Husk Ash Foamed Concrete | ||
Author(s): M. F. Nuruddin, R. Bayuaji | ||
Pages: 121-129 | Paper ID: 1925091-IJCEE-IJENS | Published: October, 2009 |
Abstract: In this study mix proportion parameters of
lightweight foamed concrete (LWFC) are analyzed by
using the Taguchi’s experiment design methodology for
optimal design. For that purpose, mixtures are designed in
L16 orthogonal array with five factors, namely, Microwave
Incinerated Rice Husk Ash (MIRHA) contents, water
cementitious ratio (w/c), sand cement ratio (s/c),
superplasticizier (SP) content, foam content. The mixtures
are tested, both in fresh and hardened states and to meet
the entire practical and technical requirement of LWFC.
The results are analyzed using the Taguchi experimental
design methodology. The best possible levels of mix
proportions are determined for maximization through
compressive strength, splitting tensile strength, UPV. Dry
density, porosity, and water absorption can be really
minimized by the proposed optimum mixture proportions.
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Keywords: Lightweight Foamed Concrete (LWFC), Microwave Incinerated Rice Husk Ash (MIRHA), Taguchi Method. | ||
Full Text (.pdf) | 98 KB |
Title: GIS Based Analysis on Environmental Sensitive Areas and Identification of The Potential Disaster Hazardous Locations in Southern Sri Lanka | ||
Author(s): G. P. T. S. Hemakumara | ||
Pages: 311-315 | Paper ID: 1966091-IJCEE-IJENS | Published: October, 2009 |
Abstract: This study mainly focuses to
carry out the physical dimension and
characteristics of environmental
sensitive areas in Matara District and
build a system to identify the spatial
distribution of environmentally sensitive
locations in the events of Disasters such
as Landslide, Flooding. By generating
the 3D model for entire Matara District ,
It has to be demarcated high lands and
low lying areas classification. For that, it
is necessary to set up a comprehensive
contour network for entire study area.
By georeferncing 1: 50000 topographic
sheets. Contour information has been
digitized into the Geographic
Information System. Feeding of height
information, adjustment of contours
between the topographic sheets have
been done using quality control tools of
GIS. After, setting up a very reliable
and sophisticated contour based GIS
system. Slope classification method can
be applied to obtain the slope angle
values and slope aspects. Classification
of slope angle and aspect gave the
elevation picture of entire area of high
lands in Matara District which can be
estimated more than 60% slope angle as
risky areas.
Distribution networks of rivers,
streams and tributaries have been
mapped to measure the sensitive
buffering of law lying areas which
frequently affected from
flooding. In addition to the elevation
and water related sensitive
identification, Some Landuse/Landcover
areas such as marshy, swampy and
forestry lands have been overlaid to
make final identification of the Potential
Disaster Risk Areas ( PDRA). Result of
this study shows that vulnerable risk
locations and its spatial pressure to
spread the Disasters within Matara
District.
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Keywords: Disaster Mitigation, Environmental Sensitive Areas, GIS Analysis. | ||
Full Text (.pdf) | 452 KB |