Testing of mechanical characteristics on non-standard specimens of ancient lime concrete mortar of the Narni Bridge
Drdácký, Miloš
2008 - English The report summarizes methodology of testing of non-standard specimens of ancient mortars and its application at testing of lime concrete extracted from pillars of the Narni Bridge in Italy. Zpráva se zabývá popisem metodiky zkoušení nestandardních vzorků historických malt a zkouškami vápenného „betonu“, odebraného z jádrových vrtů mostu v Narni. Keywords: ancient mortar; mechanical characteristics; non-standard testing Available at various institutes of the ASCR Testing of mechanical characteristics on non-standard specimens of ancient lime concrete mortar of the Narni Bridge

The report summarizes methodology of testing of non-standard specimens of ancient mortars and its application at testing of lime concrete extracted from pillars of the Narni Bridge in ...

Drdácký, Miloš
Ústav teoretické a aplikované mechaniky, 2008

Report on the evaluation mission to Regensburg (Germany)
Drdácký, Miloš
2005 - English The report presents conclusions of an ICOMOS evaluation mission to Regensburg and Stadtamhof which are nominated for inscription on the list of World Heritage. The individual paragraphs deal with basic features of the nominated property, its boundaries and buffer zone, legislative protection, management and management plan, conservation, tourism, authenticity, cultural significance and other aspects, namely protection against flood and the attitude of citizens to cultural heritage. The last item was investigated using a questionnaire and its evaluation is shortly presented, too. Zpráva přináší výsledky hodnotitelské mise ICOMOS do Regensburgu a Stadtamhofu – města, které je nominováno na zápis do seznamu Světového dědictví UNESCO. Jednotlivé části zprávy se zabývají základními rysy nominovaného subjektu, hranicemi zapisovaného území a jeho ochranným pásmem, právní ochranou, správou a plánem budoucí správy, památkovou péčí, cestovním ruchem, autenticitou, kulturním významem a dalšími aspekty, zejména ochranou proti přírodním katastrofám a postojem občanů města k památkám a zápisu na seznam. Poslední aspekt byl zkoumán dotazníkovou akcí a její krátké vyhodnocení je ve zprávě uvedeno. Keywords: Regensburg; Stadtamhof; world heritage nomination Available at various institutes of the ASCR Report on the evaluation mission to Regensburg (Germany)

The report presents conclusions of an ICOMOS evaluation mission to Regensburg and Stadtamhof which are nominated for inscription on the list of World Heritage. The individual paragraphs deal with ...

Drdácký, Miloš
Ústav teoretické a aplikované mechaniky, 2005

DELIVERABLE D9.5 Damaged Masonry
Drdácký, Miloš; Lesák, Jaroslav; Urushadze, Shota; Válek, Jan
2004 - English Several masonry trial wallets were prepared for the testing. The specimens were mounted into a special testing rig which enabled simultaneous uniform compression and cyclic horizontal loading on the top of the tested specimen. There were four hydraulic jacks generating the vertical load which was transmitted to the wall by eight ties and a steel 'hatö on the top of the wall. Horizontal displacement (force) on the top of the wall was introduced from servo-hydraulic MTS actuator of 250 kN capacity. Experimental part involved testing of brick walls for determination of crack pattern development under various combined loadings and testing of brick, sandstone and marly lime stone walls for crack and damage determination by application of NDT methods. Four approaches have been studied and evaluated: i) sonic wave propagation, ii) stress wave propagation, iii) crack pattern development, iv) modal analysis in which also a case study has been accompanied with a related pilot shaking table test of a one leaf masonry model. Keywords: masonry; damage; NDT Available at various institutes of the ASCR DELIVERABLE D9.5 Damaged Masonry

Several masonry trial wallets were prepared for the testing. The specimens were mounted into a special testing rig which enabled simultaneous uniform compression and cyclic horizontal loading on the ...

Drdácký, Miloš; Lesák, Jaroslav; Urushadze, Shota; Válek, Jan
Ústav teoretické a aplikované mechaniky, 2004

DELIVERABLE D9.6 Small sample testing
Cikrle, P.; Drdácký, Miloš; Lesák, Jaroslav; Slížková, Zuzana; Válek, Jan; Vavřík, Daniel; Zíma, Pavel
2004 - English A number of in-situ tests for mechanical material properties is readily available but there were developed improved methodologies which met the requirements and specifics of this project. It the case of historic masonry there was necessary to deal with a common additional problem, which is the testing of non-standards samples. This was for example a problem of testing of historic bedding mortars or renders, where a typical width of sample is around 10 mm. It comes along with the general need for small ů micro samples with regards to the protection of historic masonry where a minimum intervention is always required. Mechanical properties in bending were tested on non-standard mortar samples which were supplemented symmetrically on both ends with two 'prostheses'. According to the results of the tests comparing the flexural strength of pure mortar beams with the strength ascertained on prosthesized identical material the influence of prosthesization is negligible. Testing of stone samples involved comparison of the compressive and split tensile strength of specimens of standard dimensions and specimens of smaller dimensions Keywords: small samples; mortar; stone Available at various institutes of the ASCR DELIVERABLE D9.6 Small sample testing

A number of in-situ tests for mechanical material properties is readily available but there were developed improved methodologies which met the requirements and specifics of this project. It the case ...

Cikrle, P.; Drdácký, Miloš; Lesák, Jaroslav; Slížková, Zuzana; Válek, Jan; Vavřík, Daniel; Zíma, Pavel
Ústav teoretické a aplikované mechaniky, 2004

Stability analysis of perforated webs
Drdácký, Miloš; Máca, J.
2001 - English This paper presents results of experimental and numericalstability analysis of thin walls perforated with a numberof small openings. Keywords: thin-walled structure, perforated web, critical load. Available at various institutes of the ASCR Stability analysis of perforated webs

This paper presents results of experimental and numericalstability analysis of thin walls perforated with a numberof small openings.

Drdácký, Miloš; Máca, J.
Ústav teoretické a aplikované mechaniky, 2001

Comparative study of slopes - ultimate limit state (EC 7) and safety factor method
Koudelka, Petr
1996 - English safety area Keywords: Eurocode 7; safety factor; ultimate limit state; slopes stability Available at various institutes of the ASCR Comparative study of slopes - ultimate limit state (EC 7) and safety factor method

safety area

Koudelka, Petr
Ústav teoretické a aplikované mechaniky, 1996

Space Truss Roof System - Experimental Investigations
Drdácký, Miloš; Bartoš, František; Bouška, František; Lesák, Jaroslav
1996 - English Available at various institutes of the ASCR Space Truss Roof System - Experimental Investigations

Drdácký, Miloš; Bartoš, František; Bouška, František; Lesák, Jaroslav
Ústav teoretické a aplikované mechaniky, 1996