SVIBOR - Project code: 2-11-316

MINISTRY OF SCIENCE AND TECHNOLOGY

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tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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Project code: 2-11-316


QUALITY CONTROL OPTIMALISATION FOR LARGE EARTH STRUCTURES


Main researcher: ROJE-BONACCI, TANJA (41435)


Assistants
Type of research: applied
Duration from: 01/03/91. to 12/31/97.
Papers on project (total): 52
Papers on project quoted in Current Contents: 1
Institution name: Građevinski fakultet, Split (83)
Department/Institute: Geotechnical department
Address: ul. Matice hrvatske 15
City: 21000 - Split, Croatia
Communication
Phone: 385 (0)21 551 373, 523 333
Fax: 385 (0)21 524 162
E-mail: MISCEVIC"CIGLA.GRADST.HR
E-mail: Bonacci"cigla.gradst.hr
Summary: The Project consists of three parts which are connected and taken as a whole will yield the results contained in the title. The first part deals with stochastic relations between the results obtained by Proctor's compaction test and the consistency limits and concludes that there exists a firm bond betweeen the liquid limit Wll and the dry density obtained by Proctor's test. The second part deals with the possibility to determinate liquid limit Wll using the one-point method with Cassagrande apparatus and the fall-cone penetrometer method. It has been concluded that one-point method can be used after the preliminary determination of the exponent in the respective equation for defining the liquid limit Wll from the moisture content obtent from the experiment. Seemingly, the value of the exponent suggested by some standards (e.g. DIN) is not suitable for general use. The thirdpart of the Project contains methodology for determining the specification limits which can be used for the quick and simple control of the quality of the built-in earth material.This suggests the application of the samples method and its means instead of the control by individual measurements. It also states of reaching wrong conclusions if the control method is applied using the results of individuals. The basic investigation is extended with research of stability and erosion in the cuts made in the weak rock or in the soil. In the future the results of Projct will be transformed in suggestions for standards.

Keywords: earth srtuctures, quality control, moisture, Proctor's test, compaction test, consistency limits, liquid limit, plastic limit, dry density, optimum moisture, statistic, statistic testing, standard deviation, regresion analysis, correlation, specification limits, control carts, clays

Research goals: The target is quick and biggest quality control of the built-in earthmaterial. Earth works consist of embankment and cut, and work is enlarged with analysis of erosion on the cut surface. Both investigations will result with the suggestions for large earth strutures and cut. The suggestions deal with a quality control for the built-in of earth material and a protection of the cut surface in the softrocks. An extension of the Project is made by the research of possibilites of use soft rock (marl) as a fill material for an embankment, if the soft rock underwent the weathering process.

COOPERATION - PROJECTS


  1. Name of project: 2-11-001 IDENTIFIKACIJA I MODELIRANJE HIDROLOŠKOG KRAŠKOG SISREMA
    Name of institution: GRAĐEVINSKI FAKULTET SVEUČILIŠTA U SPLITU
    City: 21000 - Split, Croatia

COOPERATION - INSTITUTIONS


  1. Name of institution: KEMILSKO-TEHNOLOŠKI FAKULTET
    Type of institution: University/Faculty
    City: 21000 - Split, Croatia

  2. Name of institution: GRAĐEVINSKI INSTITUT (danas IGH)
    Type of institution: University/Faculty
    City: 10000 - Zagreb, Croatia

  3. Name of institution: INSTITUT GRAĐEVINARSTVA HRVATSKE, Poslovni centar Split
    Type of institution: Non-profit
    City: 21000 - Split, Croatia

OTHER ACHIEVEMENTS


  1. Name: NEKA POGLAVLJA IZ MEHANIKE TLA I KLIZANJE KOSINA (autorizirana predavanja)
    Type of achievement: Teaching aids and educatio
    Authors: Tanja Roje-Bonacci

  2. Name: ZBIRKA RIJEŠENIH ZADATAKA IZ MEHANIKE TLA
    Type of achievement: Teaching aids and educatio
    Authors: Predrag Miščević

  3. Name: Mehanika tla
    Type of achievement: Teaching aids and educatio
    Authors: dr. Tanja Roje - Bonacci
Other information about the project.
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Last update: 09/05/95
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