Saturday, 31 October 2015
Twin-Wing Tsunami Barrier
On December 26, 2004 a major earthquake with a
magnitude between 9.1 and 9.3 on the Richter scale occurred off the West Coast
of Sumatra, Indonesia. This earthquake generated a devastating tsunami. Several
countries suffered from the gigantic tsunami, many people died and many more
lost their properties. The tsunami struck the West Coast of Peninsular Malaysia
and killed 68 people and destroyed many properties. The Island of Penang was
one of the places that suffered from the disaster. Fifty seven people died in
this area when most of them were enjoying their time on the beach. Many home
appliances, several boats and fishing equipments were also destroyed in the
area. In order to prevent similar damages from a possible recurring tsunami
event “TWIN-WING TSUNAMI BARRIER’’ has been used to design an offshore barrier
to dissipate the tsunami wave energy in this study. The opportunity to develop an innovative barrier
to break down the mass of the wave, to neutralize its energy and prevent them
from reaching economically strategic coastal areas became overwhelming.
Friday, 30 October 2015
Use of Rubber Particles from Recycled Tires as ConcreteAggregate for Engineering Applications
Investigations and research into the recent use of rubber particles in concrete has been in practice. However, information on the rubber particle sizes or their distributions within concrete which may also influence the concrete properties is still limited. In practice, three groups of singly-sized rubber particle samples (3 mm, 0.5 mm and 0.3 mm) and one sample of continuous size grading (prepared by blending the three singly-sized samples to form the same particle distribution curve of sand) were used to replace 20% of the natural fine aggregate by volume. The reference concrete containing 100% sand was also prepared to compare its properties with those of the samples in terms of workability, fresh density, compressive strength, tensile splitting strength, flexural strength and water permeability. The experimental results demonstrated that the rubber particle size affects the concrete's workability and water permeability to a greater extent than the fresh density and strength. Concrete with rubber particles of larger size tends to have a higher workability and fresh density than that with smaller particle sizes. However, the rubber aggregates with smaller or continuously graded particle sizes are shown to have higher strengths and lower water permeability.
Thursday, 29 October 2015
Wednesday, 28 October 2015
Thirsty Concrete Pavement!!!
Pervious concrete (also called porous concrete, permeable concrete, no fines concrete and porous pavement) is a special type of concrete with a high porosity used for concrete flatwork applications that allows water from precipitation and other sources to pass directly through, thereby reducing the runoff from a site and allowing groundwater recharge.
Pervious concrete is made using large aggregates with little to no fine aggregates. The concrete paste then coats the aggregates and allows water to pass through the concrete slab. Pervious concrete is traditionally used in parking areas, areas with light traffic, residential street, pedestrian walkways, and greenhouses. It is an important application for sustainable construction and is one of many low impact development techniques used by builders to protect water quality.
Tuesday, 27 October 2015
Monday, 26 October 2015
IMPORTANCE OF UNIT TEST MARKS TO RAISE POINTERZ!!!
SECRETZZ OF TOPPERZ!!!
IN CBSGS EACH SUBJECT IS OF 100 MARKS, IN WHICH UNIVERSITY
CONDUCTS 80 MARKS OF FINAL EXAM AND 20 MARKS UNIT TEST.
IMPORTANT PART IS, IF YOU SCORE 15 MARKS IN UNIT TEST THEN
YOU HAVE TO SCORE ONLY 45 MARKS OUT OF 80 MARKS IN FINAL PAPER TO ACHIEVE 7
POINTER AND 55 MARKS OUT OF 80 MARKS IN FINAL PAPER TO ACHIEVE 8 POINTERS.
SO THE ROLE OF UNIT TEST MARKS IS VERY MUCH IMPORTANT IN
GOOD POINTER.
THANKS AND REGARDS
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