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V diplomski nalogi so obravnavane lastnosti betonskih mešanic, katerih vezivo predstavlja žlindrin cement CEM III/B 32,5 N-LH/SR, z nizko toploto hidratacije. Za pridobitev podatkov o lastnostih različnih mešanic so bile opravljene laboratorijske preiskave svežega in strjenega betona. Na svežih mešanicah so bile opravljene preiskave za določitev konsistence (metoda s posedom in metoda z razlezom), na strjenih vzorcih pa so bili določeni tlačna trdnost s porušno metodo in elastični parametri z uporabo ultrazvočne preiskave. Enake preiskave so bile opravljene tudi na betonih s Portlandskim cementom CEM II/B-M (LL-V) 42,5 N. Cementi CEM II/B so najpogosteje uporabljena vrsta cementa v slovenski gradbeniški praksi. Sledila je analiza rezultatov in njihova medsebojna primerjava. Rezultati so pokazali, da so betoni z žlindrinim cementom bolj tekoče konsistence, kot betoni s Portlandskim cementom. Zgodnje vrednosti mehanskih lastnosti, kot so tlačna trdnost ter dinamični modul elastičnosti in strižni modul, so občutno nižje pri betonih z žlindrinim cementom, zaradi počasnejšega oblikovanja produktov hidratacije. Po osemindvajsetih dneh hidratacije pa se razlika tlačnih trdnosti in elastičnih parametrov med betoni z žlindrinim cementom in betoni s Portlandskim cementom bistveno zmanjša. V nekaterih primerih betoni z žlindrinim cementom dosežejo celo višje 28-dnevne vrednosti mehanskih lastnosti. he graduation thesis deals with the properties of concrete mixtures prepared with slag cement CEM III / B 32.5 N-LH / SR with low heat of hydration. Laboratory tests of fresh and hardened concrete were performed to obtain data on the properties of different mixtures. Slump test and flow table test were performed to determine the consistency of fresh concrete. Compressive strength was determined on hardened samples and elastic parameters were measured using the ultrasonic technique. The same tests were performed on concretes with Portland cement CEM II / B-M (LL-V) 42.5 N. CEM II / B types of cement are the most commonly used cements in Slovenian construction practice. After completed laboratory tests, an analysis of the test results and their comparison followed. The obtained results showed that slag cement concretes have a more liquid consistency than Portland cement concretes. Due to the slower formation of hydration products, early age mechanical properties, such as compressive strength and dynamic modulus of elasticity and shear modulus, are significantly lower in the slag cement concretes. After twenty-eight days of binder hydration, the difference in compressive strength and elastic parameters between the slag cement concrete and Portland cement concrete decreases significantly. In some cases, slag cement concrete achieves even higher mechanical properties after twenty eight days.

Na državnem cestnem omrežju Republike Slovenije je zaradi dotrajanosti omejena skupna dovoljena masa vozil na 15 premostitvenih objektih. Nastala situacija je posledica konstantnega krčenja sredstev za državne ceste v zadnjih letih, zato potrebne ter že načrtovane sanacije niso bile izvedene. Rešitev nastalih težav je izključno sanacija premostitvenih objektov. Panoga gradbeništvo je tipično storitvena dejavnost in ena izmed pokazateljev vlaganja države v infrastrukturo. Gradnja večine objektov predstavljajo obsežna in kompleksna dela. Problem se kaže v obvladovanju informacij, ki naraščajo z obsegom in številom projektov. Gradbena podjetja uporabljajo različna informacijska orodja, ki jim lajšajo načrtovanje in spremljanje procesa gradnje, tako se pojavi nepovezljivost med posameznimi orodji. Posledice tega so nepreglednost podatkov, nezmožnost avtomatiziranega prenosa podatkov ter vprašljiva kakovost in varnost posameznih podatkov. V prvem delu diplomskega dela smo na splošno predstavili problematiko premostitvenih objektov z vidika poškodb ter obrazložili pomembnost sprotnega ugotavljanja in saniranja poškodb. Na podlagi konkretnega primera (most Dolsko) smo podali opis poškodb ter predlog sanacijskih ukrepov. V nadaljevanju dela je predstavljena priprava projekta za izdelavo terminskega plana in ponudbenega tehno-ekonomskega elaborata. Priprava vsebuje: popis del, strukturo projekta (WBS) in lokacijski potek del. Pri izdelavi popisa del in strukturiranju projekta sta bili uporabljeni programski orodji Xpert in MS Project. V sodelovanju s projektantom smo izdelali lokacijski potek izvedbe del, ki služi kot pomoč pri natančnejši izdelavi terminskega plana. On the Slovenian national road network a total of 15 bridges have a weight limit restriction due to their poor condition. Their condition is a result of cuts in funding of remedial works in recent years consequently already planned remedial works were not undertaken. To remedy the problem rehabilitation of these bridges needs to be performed. Construction industry is a typical business activity and one of the key indicators of state investment in infrastructure. The construction of most structures represents the extensive and complex range of activities. The problem is reflected in the management of information, which increases with the size and number of projects. Construction companies use different IT tools that facilitate their planning and monitoring of the construction processes which may result in bad connectivity between different tools used. The result is a lack of transparency of information, inability to automate data transfer, questionable quality and safety of data. In the first part of the thesis general problems related to damage of bridges and the importance of their assessment and remediation are presented. Based on the actual case (Dolsko bridge) the description of common types of damages and a proposal for remedial action are discussed. The second part of the thesis presents the preparation of the project bill of quantities as a tender documentation. Preparation includes: project scope definition as work breakdown structure (WBS) and location of the course. Structured bill of quantities is prepared using Xpert project management tool and exported to MS Project. In collaboration with the designers, a locational course of execution of works, which serves as an aid in the production of accurate schedule was created.

Namen diplomskega dela je bil preveriti možnost uporabe stranskih produktov, ki nastanejo pri izgorevanju premoga v termoelektrarni Trbovlje za zalivne mase kanalov in geosond in jih primerjati z zalivnimi masami, ki jih je mogoče kupiti na trgu. Zalivna masa je mešanica polnila, veziva in vode, ki mora izpolnjevati zahteve glede pretočnosti, volumenske stabilnosti, trdnosti in druge, za specifične namene rabe, zahtevane lastnosti. Izvedli smo laboratorijske preiskave na različnih mešanicah stranskih produktov izgorevanja premoga ter na referenčni zalivni masi. Preizkusili smo volumensko stabilnost svežih mešanic, z reometrom smo izmerili njihovo viskoznost, opravili meritve vodovpojnosti po Enslinu, meritve adsorpcije na organsko barvilo metilen modro, po Atterbergu smo ugotavljali mejo židkosti bentonita ter merili tlačne trdnosti staranih mešanic. Ugotovili smo, da ima količina dodane vode velik vpliv na rezultate vseh preiskav, da je njen vpliv nelinearen, da bentonit kot dodatek dobro vpliva na stabilnost sveže mešanice, cement pa pripomore k povečanju trdnosti. Žlindra kot polnilo ni izkazala ugodnih rezultatov, prvič zato, ker bi jo morali odsejavati pred uporabo, drugič pa zato, ker ne veže in mešanice z žlindro ne dosegajo ustreznih trdnosti. The purpose of the thesis was to investigate the coal combustion products - CCP- from the brown coal burning thermo-power plant as a component for grouts for backfilling trenches and geo-sounds. The grout is a mixture of inert material, hydraulic binder, additives and water. It must fulfil the criteria of viscosity, volumetric stability, strength and others, for specific usage required properties, like heat permeability. The laboratory tests were performed on different mixtures of fly ash, boiler slag, cement and bentonite. Additionally, a commercial grout was investigated as a reference material. Index properties like the grain size distribution, the Enslin Neff water adsorption test, the Methylene blue test and the Atterberg limit tests were performed on dry row materials. On mixtures with water the volumetric stability and the viscosity were investigated. The compressive strength of hardened grout was measured after 28 days. The investigation shows that the water/dry mass ratio has a great influence to the mixture as well as to the hardened grout properties. Low addition of bentonite improves the stability of fresh mixture properties and the cement improves the strength of hardened fly ash grout. The boiler slag was found not to be suitable as a part of inert fill, because it is to coarse-grained and should be sieved before its use and it has not hydraulic properties.

V diplomski nalogi sem predstavil različne tipe kamnitih zidov in njihovo izdelavo. Predstavljeno je tudi kamnoseško orodje in vrste obdelanega kamna. Kamen je najstarejši gradbeni material za zidane konstrukcije. Iz njegove uporabe izhajajo vsa znanja o zidarskih tehnikah in zvezah. Glavni namen preiskav je ugotoviti, ali lahko zidarska zveza vpliva na tlačno trdnost kamnitega zidu. V ta namen smo zgradili troslojne kamnite zidove z dvema različnima zidarskima zvezama. Prvo polovico zidov smo pozidali z vezniško zidarsko zvezo, drugo polovico pa s smerniško zidarsko zvezo. Zidovi so bili pozidani z apneno malto, nato pa ometani z grobim in finim ometom. Opisane so preiskave za določanje tlačne in upogibne trdnosti za apneno malto in kamen. Opravili smo tudi preiskavi trdnosti stika med kamnom in malto ter trdnosti jedra zidu. Pri tlačni preiskavi zidov smo s globalne deformacije zidu. Teste smo opravili na dveh nizkih in dveh visokih zidovih, tako da smo lahko analizirali tudi vpliv višine preskušancev na tlačno trdnost zidovine. Ugotovili smo, da zidarska zveza ne vpliva na tlačno trdnost zidu, kar velja tako pri nizkih kot pri visokih zidovih. Tlačna trdnost visokih zidov je nekoliko nižja od tlačne trdnosti nizkih zidov. V nalogi sem naredil pregled modelov za izračun tlačne trdnosti ter analiziral različne pristope k izračunu tlačne trdnosti enoslojne in večslojne zidovine. ter jih s primerjal z eksperimentalnimi rezultati. Izkaže se, da je ob kombinaciji Mann-ovega in Bindinega modela možno napovedati tlačno trdnost večslojne kamnite zidovine In the thesis overview of different types of stone masonry and the construction techniques are presented. There are also presented stonecutting tools and different types of stone masonry units in dependence from the extend of dressing. Stone is the oldest building material for building masonry structures. Thus all the masonry techniques developed from the history of building with stone. The main purpose of the investigation was to determine the influence of masonry bond on the compressive strength of stone masonry. For this purpose three-leaf stone masonry walls with two types of masonry bond were built. The first type was built with through stones connecting outer leaves through the thickness of the wall. The second one was built without through stones but with staggering units along the edges. All the specimens were built with lime mortar and than plastered with coarse and fine plaster at the end. Results of determing compressive and flexural strength of mortar and stone and their bond are also presented. Inner core was also tested and its compressive and splitting tensile strength were determined. During compressive tests of masonry global deformations were measured. Compressive tests on masonry were performed on the specimens of the size of wallette and wall. The results of tests revealed that masonry bond do not have significant influence on obtained compressive strengths. Compressive strength was slightly lower for walls in comparisson to wallettes. Summarizing all experimental data and different analitical models for predicting compressive strength of multipleleaf masonry walls, it was showen that Mann's and Binda's models can be used for estimation of compressive strength for multiply-leaf masonry