In-situ investigations of deep-stabilized soil

102A 853322 Case history of a cut-off wall executed by jet grouting

853326 Dynamical test method for continuous compaction control

Aschten. F. Jam~olkowsk~. M. Tornaghl. R Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Helsinki, 23-26 May 1983 VI. P121-126 Publ Rotterdam A A Balkema. 1983

Floss. R. Gruber. N. Obermayer. J Proc 8th European Conference on Soil Mechanics and Foundation Engineering. Helsinki. 23-26 May 1983 VI. P25-30 Publ Rotterdam A A Balkema. 1983

A case study describes a cut off executed around the existing Outlet Station of an od-fired power plant, to prevent seepage and internal erosion Jet grouting represented a convement alternative to other construction procedures, owing to the presence of 3 5m of water on the outlet channel s~de and because of access~bfl:ty problems Laboratory tests results obtained on samples of treated sod are &scussed. and observauons dunng and after cut offconstrucuon are also reported wtth reference to surface upheaval and hydrauhc behav~our

Experiences with a new dynamic test method used m earth and road construction are described The measunng principle and results of the dynamic control at various construction s~tes are presented The dynamic properties which a measuring roller must possess, the field tests and measuring dewces reqmred to determine the depth range of the system measuring roller/sod. and the relationship between Compaction Meter Value and geophysical soft values corresponding to usual control methods are noted

Soil stabilisation

853327 Ground improvement by soil replacement

853323 Stabilization of sensitive days with hydroxy-aluminium compared with unslaked lime

Hdmer. K. Knappe. M. Antz. H. Stark. D Proc 8th European Conference on Soil Mechanics and Foundation Engineering, Heisinki, 23-26 May 1983 VI. P37-43 Publ Rotterdam A A Balkema. 1983

Bryhn. O R. Loken. T. Aas. G Norw Geotech lnst Publ N151. 1984. 14P The use of hydroxy-alummmm and unslaked hme. both with and without addltwes, to stabdlse quick clays was mvesUgated Shear strength measurements were used to describe the extent of sod ~mprovement OH-A1 with necessary addltwes, of which CMC. calcaum carbonate and potassmm sulphate were the most useful, stabfllsed all types of clay CaO was very effectwe for silty clays but of httle effect m high water content or salty clays and had a much lower stabfllsmg effect on surrounding areas than OH-A1 Iftechmcal grade OH-Ai can be produced at an acceptable price. ~t may prove most useful for soft stabfl~sahon

853324 ln-situ investigations of deep-stabilized soil Halkola. H A Proc 8th European Conference on Soil Mecham'cs and Foundation Engineering. Heisinki, 23-26 May 1983 V1. P33-36 Publ Rotterdam A A Balkema. 1983 Summary of data obtained from two experimental construcUon sites m Helsmk~. Finland Tradmonal ground mvestlgatton methods, hme and gypsum-hme column tests, column penetrometer tests and column-vane tests were used to deterrome a suitable method for controlhng the quahty and strength of deep stablhsed sods In sltu results were compared with various laboratory tests

Soil compaction

Construction of an mdustrml plant on ground, sensitive to dffferentml settlements, has necessitated the prows~on of statable foundation subgrade For the soft improvement. 600.000 cu m of existing soft sdt were removed and replaced by gravel Methods for the control of the improved ground are presented. including plate loading tests and a footing test loading Dynamic soundings and. for comparison, compactometer tests were executed

853328 Evaluation of ground improvement at Belawan Port, North Sumatra Johnson. D. Nlcholls. R. Thomson. G H Proc 8th European Conference on Soil Mechanics and Foundation Engineering. Heisinki. 23-26 May 1983 V1. P45-52 Publ Rotterdam A A Balkema. 1983 Ground treatment using vlbroflotatlon and dynamic consohdat~on. carried out during the port development, is described Methods used to estabhsh a correlation between relative density and static cone resistance are presented, which lead to the criterion for acceptance of the treatment The method by which data obtained was processed to allow for some ground contaming slgmficant sdt and clay. for which the relative density criterion ts not apphcable, is discussed The data m&cate that the v~broflotat,on and dynamic consohdatlon techmques successfully compacted the sand fill to a minimum 60% relaUve density

See aho 853244

853329 Determination of preconsolidation pressure through permeability measurement

853325 Metal culverts: the compaction of packing materials (In French)

Karunaratne. G P. Tan. S A. Lee. S L Proc 8th European Conference on Soil Mechanics and Foundation Engineering. Helsinki. 23-26 May 1983 VI. P53-54 Publ Rotterdam A A Balkema. 1983

Long. N T. Valeux. J C. Froumentln. M Liaison Lab Ponts Chanssees N133. Sept-Oct 1984. P27-32 Tests were earned out to assess the smtabfl~ty of &fferent compaction methods of materials to be used to pack the haunches of a culvert The most efficient methods, m decreasing order, were wbratmg hammer, percussion hammer, internal wbrat~on. hand compression and placement w~th a high pressure water jet followed by hand compresslon

Key indicators m assessmg a sod ,mprovement method are settlement and preconsohdatlon pressure, which are more rehable than pore pressure, especially m highly plastic soft clays A blhnear relationship between void ratio and coeffictent of permeabdlty provtdes an accurate and declswe method ofdetermmmg preconsohdatlon pressure