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Images for liquefaction silt; more images...
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.
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 224
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "23 Seabreeze Close, Bexley. Through the window pane beside the door you can see silt piled about 30 cm high inside the house".
BeckerFraserPhotos December 2011 photograph 2351
Images, UC QuakeStudies
A photograph captioned by BeckerFraserPhotos, "A residential property on Waygreen Avenue in New Brighton. A note reads, 'Don't bother digging! Thanks anyway'. This family moved out after the February earthquakes, due to damage from liquefaction. The stone made the house heavy so it sank and suffered from silt and water creating mould and other problems inside the house".
BeckerFraserPhotos February 2011 photograph 318
Images, UC QuakeStudies
A view down Galbraith Avenue in Avonside. The footpath and road have been cracked by the 4 September 2010 earthquake. Small deposits of dry liquefaction silt can be seen on patches of the road.
BeckerFraserPhotos February 2011 photograph 319
Images, UC QuakeStudies
A view down Galbraith Avenue in Avonside. The footpath and road have been cracked by the 4 September 2010 earthquake. Small deposits of dry liquefaction silt can be seen on patches of the road.
BeckerFraserPhotos May 2013 photograph 123
Images, UC QuakeStudies
An residential property at 7 Waygreen Avenue in New Brighton. The section and footpath is overgrown with weeds and silt from liquefaction. A green sticker on the front window can be seen through the trees.
BeckerFraserPhotos April 2011 photograph 039
Images, UC QuakeStudies
Severe damage on a New Brighton Road. It had to be reformed and raised up 40 cm. A pile of dried liquefaction has been shovelled onto the footpath. Road cones mark out the uneven surfaces on the road.
BeckerFraserPhotos May 2013 photograph 112
Images, UC QuakeStudies
An empty section where a house once stood at 27 Waygreen Avenue in New Brighton. The section is overgrown with weeds and silt from liquefaction. An road-cone sits to the left-hand side of the section.
Banks Avenue, Richmond - Photograph 21
Images, UC QuakeStudies
A pile of liquefaction silt on Medway Street is cordoned off with road cones. The photographer comments, "Piles of sand and subsiding roads at the intersection of Medway St with Woodchester Ave and Flesher Ave, 10 days after the February quake".
BeckerFraserPhotos October 2011 photograph 221
Images, UC QuakeStudies
Photograph captioned by BeckerFraserPhotos, "25 Seabreeze Close, Bexley. View through the window shows the crack in the floor slab, and a pile of silt in the corner of the room".
BeckerFraserPhotos May 2013 photograph 104
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. A blue sticker can be seen on the window.
BeckerFraserPhotos February 2011 photograph 270
Images, UC QuakeStudies
The sunken footpath around the base of a power pole on Bracken Street in Avonside. Dry silt from liquefaction can be seen mixed in with the gravel around it as a result of the 4 September 2010 earthquake.
BeckerFraserPhotos April 2011 photograph 035
Images, UC QuakeStudies
A view down New Brighton Road where silt from liquefaction still remains on the street curb. A power pole in the foreground is on a noticeable lean and a Port-a-loo can be seen to the right.
BeckerFraserPhotos September 2010 photograph 090
Images, UC QuakeStudies
A sand volcano in the Halswell Primary School grounds. Sand volcanoes were caused by liquefaction where the soil loses its strength during the earthquake and the silt rises upwards, ejecting out of a hole like magma in a volcano.
22 February Earthquake - Photograph 03
Images, UC QuakeStudies
Damage to Medway Street in Richmond. The road surface is cracked and buckled, and covered in liquefaction silt. A temporary road sign restricting speed to 30 is visible, with road cones behind. The photographer comments, "Medway St, Woodchester Ave on right just beyond the 30 sign".
BeckerFraserPhotos May 2013 photograph 091
Images, UC QuakeStudies
An abandoned residential property at 20 Waygreen Avenue in New Brighton. The section is covered with weeds and silt from liquefaction. 'HM' has been spray painted in green on the front wall of the house. The gutter has partly flooded.
BeckerFraserPhotos May 2013 photograph 108
Images, UC QuakeStudies
A view looking south down Waygreen Avenue in New Brighton. The footpath is covered with weeds and silt from liquefaction. Flooding can be seen along the edges of the road. A road cone stands in the middle of the road.
BeckerFraserPhotos May 2013 photograph 090
Images, UC QuakeStudies
An abandoned residential property at 16 Waygreen Avenue in New Brighton. The front of the section is covered with weeds and silt from liquefaction. A pram, a baby's car seat, a skateboard, and a hose have been left in the driveway.
BeckerFraserPhotos May 2013 photograph 084
Images, UC QuakeStudies
An abandoned residential property at 12 Waygreen Avenue in New Brighton. The section is covered with weeds and silt from liquefaction. A section of the driveway is partly flooded. Splinters of wood from the broken fence lie on the driveway.
BeckerFraserPhotos May 2013 photograph 113
Images, UC QuakeStudies
An empty section where a house once stood at 27 Waygreen Avenue in New Brighton. The section has partly flooded and is overgrown with weeds and silt from liquefaction. An road cone sits to the left-hand side of the section.
BeckerFraserPhotos May 2013 photograph 102
Images, UC QuakeStudies
An abandoned residential property at 32 Waygreen Avenue in New Brighton. The front of the section is overgrown with weeds and silt from liquefaction. One brick fence posts remain upright and two others have toppled onto the grass. The gutter has partly flooded.
BeckerFraserPhotos May 2013 photograph 044
Images, UC QuakeStudies
An abandoned residential property at 12 Seabreeze Close in Bexley. A damaged window has been boarded up around the side of the house and the front window has been vandalised with graffiti. The yard is covered with weeds and silt from liquefaction.
Photograph by Neil Macbeth 169
Images, UC QuakeStudies
The ruins of the historic Durham Street Methodist Church in the aftermath of the 22 February 2011 earthquake. The only parts of the building still upright are those supported by steel braces placed there after the 4 September 2010 earthquake to strengthen the building as it awaited repairs. Rubble has spilled out onto the street, knocking over the safety fences that were also erected after September. Silt from liquefaction has covered the road around the church.
Photograph by Neil Macbeth 171
Images, UC QuakeStudies
The ruins of the historic Durham Street Methodist Church in the aftermath of the 22 February 2011 earthquake. The only parts of the building still upright are those supported by steel braces placed there after the 4 September 2010 earthquake to strengthen the building as it awaited repairs. Rubble has spilled out onto the street, knocking over the safety fences that were also erected after September. Silt from liquefaction has covered the road around the church.
Photograph by Neil Macbeth 170
Images, UC QuakeStudies
The ruins of the historic Durham Street Methodist Church in the aftermath of the 22 February 2011 earthquake. The only parts of the building still upright are those supported by steel braces placed there after the 4 September 2010 earthquake to strengthen the building as it awaited repairs. Rubble has spilled out onto the street, knocking over the safety fences that were also erected after September. Silt from liquefaction has covered the road around the church.
Photo by Jennifer Middendorf 051
Images, UC QuakeStudies
Warped bike stands and liquefaction silt on the corner of High, Colombo and Hereford streets. A public walkway down Colombo Street to a small viewing area in the Square was opened up for a few weekends to allow the public to see inside the Red Zone.
22 February Earthquake - Photograph 11
Images, UC QuakeStudies
Trees alongside the Avon River in Richmond. The river level is high, and the water is grey with silt. One of the trees is leaning towards the river. The photographer comments, "High river levels because of liquefaction in the Avon. Near 373 River Rd, Richmond".
BeckerFraserPhotos April 2011 photograph 036
Images, UC QuakeStudies
Earthquake damage down New Brighton Road. There is cracking on the footpath and cars are parked on the front lawns as silt from liquefaction still remains on the street curb. A van with a 'school' sign can be seen driving down the road.
BeckerFraserPhotos May 2013 photograph 097
Images, UC QuakeStudies
A flooded driveway leading to 26 and 28 Waygreen Avenue in New Brighton. The driveway is covered with weeds and silt from liquefaction. The mailbox is on a lean and on the right-hand side is an empty section where a house once stood.