WEATHERING PROCESS IN EOCENE FLYSCH IN REGION OF SPLIT (CROATIA)
Journal Title: UNKNOWN - Year 2001, Vol 13, Issue 1
Abstract
The Eocene flysh in the region of Split (Dalmatia, Croatia) is char¬acterized by the presence of layers with different characteristics. It mainly includes thin-layered marls, clayey marls, calcareous marls, clastic lay¬ered limestones, calcarenites and breccias. Those parts that can be de¬scribed as the soft rocks or hard clays by the mechanical means, exposed to weathering reduce the durability within "an engineering time scale". The paper deals with the factors that influence the weathering process. The analyzed weathering is a combination of processes acting simulta¬neously. Most of these processes depend on the change of the water con¬tent, thus the weathering process mainly develops when a material is subjected to the wetting-drying process, On the base of these results form of degradation process is modeled. The weathering process can be main¬ly described as physical weathering combined with chemical weathering on the free surfaces and on the cracks walls. Erosion as a result of weath¬ering, is the dominant geomorphic process on analyzed flysch terrain. According to the analysis, as the most appropriate due to the characteris¬tics the tests are chosen as index properties. Some of these tests are modified in order to adapt them to the determined characteristics of ma¬terials from flysch layers. The correlations between the measured values are used as the basis for the classification proposal of the analyzed mate¬rial, according to its resistance to weathering processes. Roughly, three main groups of samples are recognizable: the first one with carbonate content more then 90% is not weathered at the engineers time scale; the second group with carbonate content from 75% to 90% include samples susceptible to weathering in engineers time scale; the third group with carbonate content less then 75% include samples in which the weather¬ing occurs immediately after the exposition to the weathering factors.
Authors and Affiliations
Predrag Miščević Tanja Roje-Bonacci
Keywords
Related Articles
- EP ID EP29917
- DOI -
- Views 159
- Downloads 2
POUZDANOST KONSTRUKCIJA ZA AKTIVNOSTI U PODMORJU, STATISTIČKI KRITERIJI NJENOG PLANIRANJA I RAZMATRANJA
Statistički pristup je jedna od metoda koje mogu dati kvalitativne pokazatelje sigurnosti konstrukcija i osnovne 'tehno-ekonomske kriterije njihove pouzdanosti. Osnova takvog pristupa je određivanje vjerojatnosti pojavlj...
ISPITIVANJE SVOJSTAVA BENTONITA KAO INŽENJERSKE BARIJERE U ODLAGALIŠTIMA RADIOAKTIVNOG OTPADA
Inženjerske barijere prisutne su u odlagalištima radioaktivnog otpada kako bi se osigurala bolja izolacija te zaštita ljudi i biosfere od opasnog ionizirajućeg zračenja radioaktivnog otpada. Funkcija brtvljenja osigurava...
FRICTION COEFFICIENT OF DIAMOND WIRE SAW
In order to estimate the diamond wire saw upon quarrying of dimension stone, it is necessary to know the value of a friction coefficient on the driving pulley of the saw. Therefore the numerical value of the friction coe...
OD ZNAČAJNOG RUDNIKA SREBRA I URANA ST. JOACHIMSTHAL, ODNOSNO JÁCHYMOV, DO RADONSKIH TOPLICA U SASKO-ČEŠKOJ «RUDNOJ GORI»
U malom naselju Konnradsgrünnu na jugozapadnim padinama Erzgebirgea otkrili su saski rudari početkom XVI. st. srebrenu rudu u dolini, koju su po zaštitniku naselja Sv. Joachymu nazvali Jochymsthal, a srebreni novac Jochy...
BRODOVI ZA UKAPLJENI PRIRODNI PLIN
Moderni brodovi za prijevoz ukapljenog prirodnog plina su brodovi s dvostrukim dnom čija se klasifikacija vrši prema tipu spremnika. Spremnici su posebno projektirani budući da se u njima skladišti prirodni plin ohlađen...