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4 results on '"PENETROMETERS"'

1. Koni Penetrasyon Deneyi Ölçümlerinde Gelişmeler.

Author

Sert, Sedat, Özocak, Aşkın, and Bol, Ertan

Subjects
*CONE penetration tests, *PENETROMETERS, *VELOCITY, *ELECTRIC conductivity, *ELECTRICAL conductivity measurement, *POLLUTANTS
Abstract

The cone penetration test (CPT) has been used for a long time as a reliable in situ test method for rapid and economical site characterization. In the early 1930's in the Netherlands, the CPT was developed as a mechanical penetrometer to determine the capacity of piles in sands. Electrical cones were first developed around the early 1960's, but came more common in the 1980's when pore pressure measurements were included (CPTu). Today, it has been used increasingly in respect to improving technology to determine some other parameters (ie: chemical properties of water, electrical resistivity, pH, temperature, soil contaminants) in addition to geotechnical properties of soils and detecting soil stratigraphy. The CPT involves pushing a 3.5 cm diameter cone with apex angle of 60° through the underlying soil at a rate of 2 cm/sec while recording tip resistance (qc), side friction (fs), pore pressure (u2) and inclination simultaneously and continuously. The CPT has some advantages, such as low cost, a time saving procedure, continuous recording, high accuracy and repeatability, automatic data logging and having no human effect. In this paper, some of the recent advances in CPT have been given and an example calculation of shear wave velocity with SCPTU has been introduced. The CPT data has been collected using the 200 kN acoustic tracked CPTu system owned and operated by Sakarya University. [ABSTRACT FROM AUTHOR]

Published
2014

2. GRANÜLER YOL TABAKALARININ YERİNDE DEĞERLENDİRME YÖNTEMLERİ: DİNAMİK KONİ PENETROMETRE (DCP) TESTİ.

Author

Emre UZ, Volkan and SALTAN, Mehmet

Subjects
*PAVEMENT design & construction, *GRANULAR materials, *PENETROMETERS, *SOIL penetration test, *QUALITY control, *MOISTURE measurement
Abstract

In our country, in-situ quality control/quality assurance (QC/QA) of granular pavement layers (subgrade, subbase and base) still relies on their density and moisture measurements. With the coming changes from an empirical to mechanistic-empirical pavement design methods, it becomes essential to move towards changing the QC/QA procedures of compacted granular materials from a unit weight-based criterion to a stiffness/strength based criterion. Unit weight criteria unable to provide sufficient information about the engineering properties of granular layers, thus a missing link occurs between the design process and construction quality control. Dynamic Cone Penetrometer (DCP) is a non-destructive, effective, fast and reliable testing method which is used to determine the stiffness/strength of granular pavement layers and subgrade. In this study, information about the DCP test device, implementation and evaluation of the test results are given, and studies are summarized in the literature. It is seen that very limited research has been done in our country on this subject. Adaptation of in-situ stiffness/strength measuring test device such as DCP to quality control/quality assurance specifications of our country will make it possible to provide more information about the mechanical properties of the granular pavement layers for the pavement design and maintenance engineers. [ABSTRACT FROM AUTHOR]

Published
2012

3. Taşıma Kapasitesi ve Oturma Miktarının Hesaplanmasında Yaygın Kullanılan Yöntemlerin Mersin Arıtma Tesisi Temeli Örneğinde Uygulanması.

Author

Kayabaşi, Ali and Gækçeoğlu, Candan

Subjects
*TERZAGHI consolidation theory, *SOIL consolidation, *SOIL penetration test, *SOIL testing, *PENETROMETERS, *SOIL moisture, *SOIL stabilization
Abstract

In this study, bearing capacity and settlement properties of the clay unit outcropping at foundation of Mersin City Sewerage Project site are calculated and the commonly used methods for the determination of bearing capacity and the settlement properties were correlated. The information was used from 20 boreholes opened in this context. Standart Penetration Tests (SPT) and Pressuremeter Tests (MPT) were accomplished in boreholes and a series of laboratory tests were carried out on disturbed and undisturbed samples. The bearing capacity of the foundation was determined with pressuremeter, Terzaghi, Hansen, Meyerof, and Skempton methods. Initial and consolidation settlements were calculated in addition to pressuremeter settlement calculations. Later, calculated bearing capacity and settlement values of clay units from different methods were correlated. The results of the bearing capacity calculations of foundation clays give closer results with Terzaghi, Hansen, Meyerof and Pressuremeter methods but Skempton method gives relatively low values due to the calculation with only cohesion parameters. Pressuremeter settlement values were the lowest results where initial and the consolidation settlement values were calculated relatively higher. Odeometer test is recommended for the litologic units which have long consolidation period. Care should be given for settlement calculations with the pressuremeter method. [ABSTRACT FROM AUTHOR]

Published
2012

4. Bazı yabancı ot tohumlarının unun kalitesine etkileri

Author

Karadeli, Hakki, Özkaya, Ahmet Hazım, and Diğer

Subjects
Penetrometers, Food Engineering, Flour, Wheat, Foreign seed, Gıda Mühendisliği, Bread quality
Abstract

İ ÖZET YÜKSEK LİSANS TEZİ BAZI YABANCI OT TOHUMLARININ ÜNÜN KALİTESİNE ETKİLERİ* Hakkı KARADELİ Ankara üniversitesi Fen Bilimleri Enstitüsü Gıda Bilimi ve Teknolojisi Anabilim Dalı Danışman: Prof.Dr. Haz im ÖZKAYA 1993, Sayfa: 64 Jüri: Prof.Dr. Hazım ÖZKAYA Prof.Dr. S. Sezgin ÜNAL Doç.Dr.Recai ERCAN Araştırmada farklı kalitedeki iki ekmeklik buğday çeşidine değişik oranlarda (%0,0, %2,5, %5,0, %10,0) yabancı ot tohumları (Pelemir, Delice, Kolza, Fiğ, Yapışkan otu) katılarak buğdayların un verimi ile unların bazı fizikokimyasal özellikleri, farinogram ve ekstensogram özellikleri ve ekmeklik kalitesine etkileri araştırılmıştır. Yabancı ot tohumları buğdayların un verimini düşürmüş, unların kül ve protein miktarını delice tohumu hariç yükseltmişlerdir. Bunlar ayrıca unların gluten miktarını, sedimentasyon değerini ve su absorbs iyonunu katıldıkları orana bağlı olarak düşürmüşlerdir. Pelemir ve delice ekstensogramda R, R- ve A değerini önemli derecede yükselttiği halde diğer ot tohumları düşürmüştür. Yabancı ot tohumları unların ekmeklik kalitesini de katıldıkları orana bağlı olarak bozmuştur. Unların ekmeklik kalitesine en olumsuz etkiyi fiğ ve yapışkan otu tohumları yapmıştır. ANAHTAR KELİMELER: Yabancı ot tohumu, un verimi, fizikokimyasal özellikler, farinogram değerleri, ekstensogram değerleri, ekmek içi gözenek yapısı, ekmeklik kalitesi, penetrometre değeri. Bu Araştırma, Ankara Üniversitesi Araştırma Fonu'nca Desteklenmiştir. ii ABSTRACT Masters Thesis THE EFFECTS OF SOME FOREIGN SEEDS ON THE QUALITY OF FLOUR* Hakkı KARADELI Ankara University Graduate School of Natural and Applied Sciences Department of Food Science and Technology Supervisor: Prof.Dr. Hazım ÖZKAYA 1993, Page: 64 Jury: Prof.Dr. Hazım ÖZKAYA Prof.Dr. S. Sezgin ÜNAL Assoc. Prof.Dr. Recai ERCAN Two different wheat varieties were substituted with 0,0%, 2,5%, 5,0% and 10,0% levels of foreign seeds (Cephalaria syriaca L., Lollum temulentum L., Brassica napus L., vicia sativa L., Silene inflata Sm. ) to determine the effects on flour yield of the wheats, physicochemical properties, farinogram and extensogram values and baking quality of the flours. Foreign seeds decreased flour yields of wheat but increased ash content of flour. Except Lollum temulentum L. They increased protein content of flour. Gluten content, sedimentation value and water absorbtion decreased as the amount of foreign seeds in the mixture increased. Cephalaria syriaca L. and Lolium temulentum L. improuved extensogram values significantly but the others deteriorated. Depending on the ratio of foreign seeds added the baking quality of flour was deteriorated. Among the foreign seeds Silene inflata Sm. and Vicia sativa L. had the most adverse effects on baking quality of flours. KEY WORDS: Foreign seed, Flour yield, Physicochemical Properties, Farinogram value, extensogram value, crumbgrain, baking quality, Penetrometer value. This Research was supported by The Research Found of Ankara University. 64

Published
1993

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