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Images for liquefaction silt; more images...
BeckerFraserPhotos May 2013 photograph 083
Images, UC QuakeStudies
An abandoned residential property at 10 Waygreen Avenue in New Brighton. The section is covered with weeds and silt from liquefaction. The front of the section is partly flooded.
BeckerFraserPhotos May 2013 photograph 117
Images, UC QuakeStudies
An empty section where a house once stood at 21 Waygreen Avenue in New Brighton. The footpath is partly flooded and is overgrown with weeds and silt from liquefaction.
BeckerFraserPhotos May 2013 photograph 106
Images, UC QuakeStudies
An abandoned residential property at 28 Waygreen Avenue in New Brighton. The section is overgrown with weeds and silt from liquefaction. The footpath to the left has partly flooded.
BeckerFraserPhotos May 2013 photograph 077
Images, UC QuakeStudies
An abandoned residential property at 1A Seabreeze Close in Bexley. The front of the property is overgrown and footpath is also covered with weeds and silt from liquefaction.
Photograph by Neil Macbeth 372
Images, UC QuakeStudies
Former Labour Party leader, Phil Goff, talking to students assembling wheelbarrows for the Student Volunteer Army at the University of Canterbury. The wheelbarrows will be used to clear silt from Christchurch properties.
BeckerFraserPhotos December 2011 photograph 2271
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "Stepping stones to allow you to walk over the silt at 19 Reaby Street in the Horseshoe Lake district".
BeckerFraserPhotos May 2013 photograph 081
Images, UC QuakeStudies
An abandoned residential property at 6 Waygreen Avenue in New Brighton. The garage door has buckled. The front yard and footpath are covered with weeds and silt from liquefaction.
New Brighton Road
Images, UC QuakeStudies
Damage to New Brighton Road. The photographer comments, "Would you believe that the up and down dirt track on the right is actually a main road?".
BeckerFraserPhotos May 2013 photograph 125
Images, UC QuakeStudies
An abandoned residential property at 3 Waygreen Avenue in New Brighton. The section and footpath is overgrown with weeds and silt from liquefaction. A bare tree stands on the footpath.
Bike Ride in the East Side - Photograph 08
Images, UC QuakeStudies
A crane sits beside the sewage treatment ponds in Bromley. In the distance can be seen large piles of liquefaction silt. The photographer comments, "Bromley sewage treatment ponds, under repair".
Breakin' Up is Hard to Do
Images, UC QuakeStudies
A large crack between the road and a concrete slab in New Brighton. The photographer comments, "This is the gap that has been growing during all the Christchurch earthquakes. It is between Robbie's Restaurant and the car park in New Brighton".
Photograph by Jocelyn Kinghorn 680
Images, UC QuakeStudies
Silt from liquefaction on a driveway and road. A road cone marks out the uneven road and a piece of board creates a temporary ramp from the driveway out onto the road.
Photograph by Jocelyn Kinghorn 678
Images, UC QuakeStudies
Silt from liquefaction on a driveway and road. A road cone marks out the uneven road and a piece of board creates a temporary ramp from the driveway out onto the road.
22 February Earthquake - Photograph 09
Images, UC QuakeStudies
Damage to River Road in Richmond. The road surface is badly cracked and slumped, and liquefaction silt covers part of the road. The photographer comments, "Lateral spreading cracks in River Rd".
Lamorna Road
Images, eqnz.chch.2010
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Lamorna Road
Images, eqnz.chch.2010
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Lamorna Road
Images, eqnz.chch.2010
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Lamorna Road
Images, eqnz.chch.2010
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Lamorna Road
Images, eqnz.chch.2010
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Lamorna Road
Images, eqnz.chch.2010
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Lamorna Road
Images, eqnz.chch.2010
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BeckerFraserPhotos May 2013 photograph 065
Images, UC QuakeStudies
Abandoned residential properties on Seabreeze Close in Bexley. The front yard and footpath are covered with weeds and silt from liquefaction. The frame of a gazebo is partially covered with cloth.
BeckerFraserPhotos May 2013 photograph 069
Images, UC QuakeStudies
An abandoned residential property at 15 Seabreeze Close in Bexley. The front yard and footpath are covered with weeds and silt from liquefaction. A cluster of bricks lie in the grass.
Cyclic Undrained DSS Testing of Christchurch Sandy Silty Soils
Research papers, University of Canterbury Library
Earthquake-triggered soil liquefaction caused extensive damage and heavy economic losses in Christchurch during the 2010-2011 Canterbury earthquakes. The most severe manifestations of liquefaction were associated with the presence of natural deposits of clean sands and silty sands of fluvial origin. However, liquefaction resistance of fines-containing sands is commonly inferred from empirical relationships based on clean sands (i.e. sands with less than 5% fines). Hence, existing evaluation methods have poor accuracy when applied to silty sands. The liquefaction behaviour of Christchurch fines-containing (silty) sands is investigated through a series of Direct Simple Shear (DSS) tests. This type of test better resembles earthquake loading conditions in soil deposits compared to cyclic triaxial tests. Soil specimens are reconstituted in the laboratory with the water sedimentation technique. This preparation method yields soil fabrics similar to those encountered in fluvial soil deposits, which are common in the Christchurch area. Test results provide preliminary indications on how void ratio, relative density, preparation method and fines content influence the cyclic liquefaction behaviour of sand-silt mixtures depending on the properties of host sand and silt.
BeckerFraserPhotos October 2011 photograph 226
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "23 Seabreeze Close, Bexley. The view through the window here shows the size of the silt piled against the front door".
BeckerFraserPhotos May 2013 photograph 103
Images, UC QuakeStudies
An abandoned residential property at 34 Waygreen Avenue in New Brighton. The front of the section is overgrown with weeds and silt from liquefaction. Cushions lie on the footpath outside the gate.
BeckerFraserPhotos May 2013 photograph 080
Images, UC QuakeStudies
A flooded footpath at 12 Waygreen Avenue in New Brighton. The footpath is covered with weeds and silt from liquefaction. Road cones can have been placed along the street in the background.
20100904_3315_1D3-24 Broken footpath - Christchurch earthquake
Images, eqnz.chch.2010
The footpath besides ANZAC Drive and the Bexley Wetlands. Liquefaction silt from well underground has flowed to the surface. Photo taken less than three hours after the 4:35am earthquake.
BeckerFraserPhotos May 2013 photograph 070
Images, UC QuakeStudies
An abandoned residential property at 11 Seabreeze Close in Bexley. The front yard and footpath are covered with weeds and silt from liquefaction. "HM" has been spray-painted on the front of the house.
Photograph by Jocelyn Kinghorn 326
Images, UC QuakeStudies
Damage to a block of flats, with silt from liquefaction around the footpath, and road cones outside the property. The fence has been spray painted with the words "All units damaged. Keep out".