Primerjava metod za vrednotenje rezultatov preskusa abrazijske odpornosti betonov po postopku ASTM C 1138

diplomska naloga

Tadej Birtič (Author), Andrej Kryžanowski (Mentor), Dušan Žagar (Thesis defence commission member), Franci Steinman (Thesis defence commission member), Simon Schnabl (Co-mentor)

Abstract

V diplomski nalogi smo primerjali različne metode za vrednotenje rezultatov preskusa abrazijske odpornosti betonov po postopku ASTM C 1138. Postopek ASTM simulira proces vodne abrazije z obrusom in se v veliki meri uporablja za določanje abrazijske odpornosti betonov namenjenih za izdelavo izpostavljenih površin vodnih zgradb. Izdelane betonske sestave so namenjene za izdelavo izpostavljenih površin na vodnih zgradbah, zato so v teoretičnem delu opisani abrazijska erozija na vodnih zgradbah, postopki za preizkušanje abrazijske odpornosti betona, raziskave abrazijsko odpornih betonov v naravi ter materiali in tehnike, ki se uporabljajo za zaščito pred abrazijsko erozijo na vodnih zgradbah. Zaradi pogoste uporabe abrazijsko odpornega betona na izpostavljenih delih vodnih zgradb je le ta podrobneje opisan. Za potrebe izvedbe eksperimentalnega dela smo izdelali šest različnih betonskih mešanic in na njih opravili preiskave svežega betona. Iz betonskih mešanic smo izdelali preskušance, katerim smo določili tlačno trdnost, modul elastičnosti ter opravili preskus abrazijske odpornosti po postopku ASTM C 1138. Rezultate preskusa abrazijske odpornosti smo beležili s tremi metodami. Z obstoječo, predpisano v standardu ASTM C 1138, z uporabo rotacijskega laserskega profilomera, ter z metodo pri kateri smo merili spremembo nivoja vodne gladine v posodi. V okviru diplomske naloge smo opravili primerjavo teh metod ter podali predloge za izboljšave posameznih metod. Poleg tega smo opravili tudi analizo abrazijske odpornosti posameznih sestav betona, ki smo jih uporabili za izdelavo preskušancev, ugotavljali pa smo tudi soodvisnosti med tlačno trdnostjo in abrazijsko odpornostjo ter med modulom elastičnosti in abrazijsko odpornostjo.

Keywords

gradbeništvo;diplomska naloga;UNI;VKI;abrazija;abrazijska erozija;abrazijska odpornost;abrazijsko odporen beton;laboratorijske metode;primerjava metod;analiza abrazijske odpornosti;

Data

Language:	Slovenian
Year of publishing:	2014
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	T. Birtič
UDC:	620.1/.2:691.3 (043.2)
COBISS:	6627937
Views:	1958
Downloads:	547
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Comparison of methods for evaluating the abrasion resistance of concrete in accordance with the ASTM C 1138
Secondary abstract:	In this thesis we compared different evaluation methods and their with the results of standard test method ASTM C 1138. This method simulates the abrasive action of waterborne particles and is most commonly used for determining abrasion resistance of concrete, designed for use in hydraulic structures. In theoretical section of the thesis we described abrasion erosion in hydraulic structures, different test methods used for determining abrasion resistance of concrete along with different materials and techniques for protection of hydraulic structures from abrasion erosion. Furthermore we discussed abrasion resistant concrete in more detail because of its frequent use in hydraulic structures. For the purpose of the experimental work, we designed six different concrete mixtures from which we cast several specimens. We made specimens for a compressive strength test, an elastic modulus test and for testing abrasion resistance of concrete. The results of the abrasion resistance test were evaluated using three different methods. The first one was the current method specified in standard ASTM C 1138. The second method involved using a rotational laser profilometer and the third one was method where we mesaured the change in level of the water level in container. A comparison of these three methods were made and suggestions for their improvement followed. In addition, we analysed the abrasion resistance of manufactured concrete mixtures.
Secondary keywords:	graduation thesis;civil engineering;abrasion;abrasion erosion;abrasion resistance;abrasion concrete;laboratory methods;comparison of methods;analysis of abrasion resistance;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XVI, 101 str.
ID:	8636192