›› 2010, Vol. 31 ›› Issue (S1): 121-126.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Preliminary study of physico-mechanical properties of Luanda sand

LIU Zheng-hong，LIAO Yan-hong，ZHANG Yu-shou   

  1. Institute of Geotechnical Investigation and Design, MMI, Xi’an 710043, China
  • Received:2010-04-21 Online:2010-08-10 Published:2010-09-09

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Abstract:

In Luanda and its surrounding area, silty sand in red or yellow color is widely distributed. Combining with two projects, based on the results of field investigation, indoor tests, standard penetration tests, plate loading tests, this kind of sand is analyzed. Some conclusions are drawn as follows. Luanda sand has bluff slope in natural situation, and has the special characteristic of collapsibility; and its mechanical properties will be obviously weakened by wetting. As the increase of void ratio, test pressure, content of clay and silt particle or the decrease of water content, the coefficient of collapsibility will be increased; besides, remoulded sand is also collapsible. As for mechanical indexes, will be recovered when water content is decreased after increased; i.e. mechanical indexes are reversible change with water content.

Key words: Luanda sand, red sand, collapsibility

CLC Number: 

  • TU 441
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