EP1338704A2 - Messung der Verdichtung von körnigen Materialschichten - Google Patents

Messung der Verdichtung von körnigen Materialschichten Download PDF

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Publication number
EP1338704A2
EP1338704A2 EP03462001A EP03462001A EP1338704A2 EP 1338704 A2 EP1338704 A2 EP 1338704A2 EP 03462001 A EP03462001 A EP 03462001A EP 03462001 A EP03462001 A EP 03462001A EP 1338704 A2 EP1338704 A2 EP 1338704A2
Authority
EP
European Patent Office
Prior art keywords
material layer
compaction
deformation
during
procedure according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03462001A
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English (en)
French (fr)
Other versions
EP1338704A3 (de
EP1338704B1 (de
Inventor
István Subert
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP1338704A2 publication Critical patent/EP1338704A2/de
Publication of EP1338704A3 publication Critical patent/EP1338704A3/de
Application granted granted Critical
Publication of EP1338704B1 publication Critical patent/EP1338704B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work

Definitions

  • the subject of the invention relates to a procedure for the on-site measurement of the compaction rate of granular material layers, especially for the determination of the compaction rate of material layers containing a solid part, liquid, and also material in the gaseous phase e.g. soils, during which, on the first part, a determined amount of deformation work is exerted on the surface of the material layer to be measured via the measuring instrument and the deformation of the material layer is measured, and, on the second part, the water content of the material layer is determined in a way that is known in itself, then from the deformation and the water content of the material layer the compaction rate of the material layer can be determined.
  • a determined amount of deformation work is exerted on the surface of the material layer to be measured via the measuring instrument and the deformation of the material layer is measured, and, on the second part, the water content of the material layer is determined in a way that is known in itself, then from the deformation and the water content of the material layer the compaction rate of the material layer can be determined.
  • Another method used for the determination of the compaction rate of material layers is isotopic compaction measurement, in which, however, a radiation source is used for making the measurement.
  • a radiation source is used for making the measurement.
  • the basis of the invention was provided by the physical fact that if impacts are exerted on an area of determined size of a material layer then the material layer subjected to a force will become compacted.
  • the recognition that led to the procedure according to the invention was that the compaction rate of material layers in every case depends on how compact the material layer was before the force carrying out the compaction is exerted. In the case of a suitably compacted material layer the compaction taking place during the test is decidedly smaller than without any preliminary compaction. So in the case that we subject the material layer to the amount of compacting work that is normally accepted during other tests and we evaluate this in a way that is different from the known methods, then the task can be solved.
  • the invention relates to a procedure for the on-site measurement of the compaction rate of granular material layers, especially for the determination of the compaction rate of material layers containing a solid part, liquid, and also material in the gaseous phase e.g.
  • the compaction rate of the material layer can be determined, which procedure is based on the principle that equipment containing a measuring head and a falling weight that may be moved as compared to the measuring head is used as a measuring device and the material layer under examination is subjected to the deformation impact work during the on-site compaction with the consecutive impacts of the falling weight of the equipment, and during the on-site compaction the material layer under examination is subjected to deformation impact work equal to the amount of the deformation impact work exerted during the compaction carried out by a standard laboratory compactor machine that is known in itself.
  • the material under examination is subject to deformation impact work equal to the amount of the deformation impact work exerted during the Proctor test, which is known in itself. As the exertion of impact work of this degree is sure to create the most compact state of the material layer that is under examination.
  • the compaction of the material layer is carried out in the same place, without any movement of the falling weight equipment.
  • a body of mass 7-13 kg, practically 10 kg is used as a falling weight, as a measuring head we use a body that touches the surface of the granular material layer at a diameter of between 130-200 mm, advantageously 163 mm, e.g. a circular metal disc, furthermore the falling weight is dropped, without any damping, from a height of between 45-105 cm, practically 72 cm, onto the measuring head that is in contact with the surface of the granular layer under examination.
  • the advantage of the procedure according to the invention is that in the case that it is used the test compaction can be carried out at the site of the measurement at the same time as the measurement, so precise values can be obtained that provide the actual result of the on-site compaction, which values are not dependent on the density or the possible density fluctuation of the soil.
  • Another advantage is that the measurement can be carried out simply and quickly, furthermore, it does not require structural elements that are dangerous to health or emit dangerous radiation, which results in fewer supplementary costs in connection with the procedure.
  • Another advantageous feature is that during the procedure not only can data be obtained that relate to the compaction rate of the soil under examination but also the bearing capacity (dynamic modulus) of the soil can be reliably determined on the basis of the same series of measurements.
  • Another favourable feature is that the procedure can be carried out anywhere, e.g. even in a work trench, due to the construction of the measuring device it is suitable for taking a great deal of measurements quickly and precisely, in other words with a great deal of efficiency.
  • Another economic advantage is that with the novel procedure the measurements can be carried out with lower costs, which results in further savings.
  • the duration of the construction work can be shortened, which has a favourable effect on the length of road surface that can be made in the available amount of time.
  • the falling weight was dropped from a height of 72 cm onto the measuring head and when carrying out the 18 impacts they were grouped into six groups of three, in turn the degree of deformation within the groups was averaged. From the averaged deformation values we determined the relative compaction rate, then we determined the water content of the material layer under examination in a way that is known in itself. The on the basis of the water content we carried out a correction and determined the compaction rate of the material layer.
  • the procedure according to the invention can be used to good effect during the on-site determination of the compaction rate of various granular material layers containing three material phases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Soil Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Crushing And Grinding (AREA)
EP03462001A 2002-02-26 2003-02-21 Messung der Verdichtung von körnigen Materialschichten Expired - Lifetime EP1338704B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU0200715 2002-02-26
HU0200715A HU225806B1 (hu) 2002-02-26 2002-02-26 Eljárás szemcsés anyagrétegek tömörségének helyszíni mérésére

Publications (3)

Publication Number Publication Date
EP1338704A2 true EP1338704A2 (de) 2003-08-27
EP1338704A3 EP1338704A3 (de) 2004-08-25
EP1338704B1 EP1338704B1 (de) 2006-03-29

Family

ID=89980207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03462001A Expired - Lifetime EP1338704B1 (de) 2002-02-26 2003-02-21 Messung der Verdichtung von körnigen Materialschichten

Country Status (4)

Country Link
EP (1) EP1338704B1 (de)
AT (1) ATE321915T1 (de)
DE (1) DE60304313T2 (de)
HU (1) HU225806B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2386000A4 (de) * 2009-01-09 2013-01-09 Geopier Found Co Inc Testvorrichtung und -verfahren für konstruktionsmodule
CN108007861A (zh) * 2017-12-29 2018-05-08 长安大学 水稳基层压实度快速测定仪

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU230106B1 (hu) * 2008-07-17 2015-07-28 István Subert Eljárás szemcsés anyagrétegek tömörségének helyszíni meghatározásához, valamint készülék az eljárás végrehajtására
CN105675438B (zh) * 2016-01-20 2018-09-18 中国十九冶集团有限公司 路堤强夯后平均压实度的确定方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1063933A1 (ru) * 1982-09-16 1983-12-30 Всесоюзный Научно-Исследовательский Институт По Монтажным И Специальным Строительным Работам Способ определени максимальной плотности грунта
GB9017474D0 (en) * 1990-08-09 1990-09-26 Bsp Int Foundation Device
DE10036310A1 (de) * 2000-07-26 2002-02-07 Bresch Helmut Fallgewicht mit Gleitlagerführung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2386000A4 (de) * 2009-01-09 2013-01-09 Geopier Found Co Inc Testvorrichtung und -verfahren für konstruktionsmodule
CN108007861A (zh) * 2017-12-29 2018-05-08 长安大学 水稳基层压实度快速测定仪

Also Published As

Publication number Publication date
EP1338704A3 (de) 2004-08-25
DE60304313D1 (de) 2006-05-18
EP1338704B1 (de) 2006-03-29
HUP0200715A2 (hu) 2004-05-28
HU225806B1 (hu) 2007-09-28
HU0200715D0 (de) 2002-05-29
DE60304313T2 (de) 2006-11-23
ATE321915T1 (de) 2006-04-15

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