Offer preparation has always been a specific part of building process which significant impact on company business. Due to the fact that income greatly depends offer’s precision and balance between planned costs, both direct overheads, wished profit, it is necessary prepare precise offer within required time available resources are insufficient. The paper presents research can be achieved while using artificial intelligence for estimation cost duration in construction projects. Both neural...

Fly ash represents a residue that occurs as product of burning finely milled particles coal in thermal power plants. The fly the construction embankments road can be used with or without addition binders. For embankment from ashes, aside (trapezoid shape) are placed. Justification this study is fact so huge amounts material left aside, while there great possibilities for using natural materials roads.

Preliminary note

This paper describes the physical, chemical and mineral properties of ash slag, which were taken from thermal power plants Nikola Tesla A, B, Kostolac A B. The knowledge mineralogical material composition is important because type minerals directly determines fly slag their possible application.Laboratory tests showed that samples consist following minerals: amorphous materials, quartz, feldspar, mullite, melilite, cristobalite, haematite calcite.The are most indicators in evaluation...

This paper presents an analysis of the stabilization different soil types using a hydraulic binder. A study was carried out on soils that can be classified into two groups: cohesive and non-cohesive soils. Clay medium low plasticity according to USCS classification were used as materials, while sandy material containing dust considered material. Samples taken from fifteen locations in Vojvodina province, Serbia. binder based cement lime. The amounts estimated at 3, 5, 7, 9%. In order...

The paper presents basic characteristics of pervious concrete and gives an overview the most significant current researches in world as well possibility use for road construction Western Balkan's countries, like Serbia.The analysis recent is presented form diagrams correlations between physical mechanical properties concrete.During preparation this type concrete, it observed that aggregate has influence since represents 70 to 80% total volume, followed by binder type, water-cement ratio...

Preliminary noteFly ash is one of the most common waste materials created by burning coal.It composed smaller particles, consisting mainly aluminosilicateglass, mullite and quartz, which are collected electrostatic separators (filter) gaseous products arising from combustion coal.This paper presents pozzolanic properties, mechanical chemical mineral composition fly obtained in process a power plant Nikola Tesla A (PPNT A) with addition binder hydrated lime cement.The aim research to test...

Physico-mechanical properties of fly ash applicable in road constructionAn experimental research physico-mechanical and stabilized with lime cement, as used construction, is presented the paper.The binder was added proportion 2, 4 6 % total quantity ash.The testing revealed that samples without can be for improvement foundation soil construction embankments subgrade layers, but are not recommended subbase base courses.The based on use i.e. a substitute natural materials industry, this would...

Paper is a brief review of the research focused on formulation an numerical model for concrete pavement which made by recycling material. For modeling finite element (FEM) and 3D were applied. The software EverFE 2.25, was used. results FEM analysis in chapter shape showing move value change, strees deflections all layers construction road model. In next phase provided with appropriate general purpose non-linear models, allows real behavior solid under load.

The paper deals with the influence of temperature changes on concrete pavement.Due to differences in upper and lower surface a slab, bending stress is created, resulting slab deformation.During process heating, difference between pavement created as result heat conduction.The has tendency expand (tense), whereas one does not alter its dimensions, which results generating stress.Concrete most commonly placed zones extremely heavy traffic load well at bus stops.The analysis was carried out...

Expert project analyses in the process of road maintenance management An updated information system, and an appropriate decision making model, must be put place for efficient management.A methodological procedure expert project-level improvement activities, based on Road Data Base (RDB) HDM-4 is presented paper.The was successfully applied accepted 2012, scope application funding network by international financing institutions (World, Bank, EIB EBRD).

This paper examines the legal and practical aspects of Article 266 Serbian Criminal Code, which criminalizes import, as well illegal processing, disposal, storage hazardous materials in Serbia. The study explores conceptual underpinnings law, emphasizing its role safeguarding public health environmental safety. It scrutinizes application 266, highlighting notable cases enforcement strategies employed by judicial authorities, a related to problems waste. also delves into inherent challenges...

Regression analysis is used to develop models for minimal daily pavement surface temperature, using air day of the year, wind speed and solar radiation as predictors, based on data from Awbari, Lybia,. Results were compared with existing SHRP LTPP models. This paper also presents predict temperature depending days year neural networks. Four annual periods are defined new formulated each period. Models networks formed basis gathered territory Republic Serbia valid that territory.

The paper presents the results of pervious concrete testing, made from natural and recycled aggregates, fractions 4/8 8/16mm, with a constant water-cement factor (0.35) without participation mineral chemical additives. In total, four mixtures were in which type applied aggregate was varied. Compressive strength after 7 28 days tested, prior to pressure tests carried out using non-destructive methods, i.e. sclerometer ultrasound, then comparison performed. After analyzing comparative studies,...

The road sector in Moldova is experiencing the same forces that are driving change organizations around world, such as: globalization and increasingly open trade among nations, rapidly advancing technology, increasing need for infrastructure to meet growing demands, policy regulatory reforms.Road throughout world addressing these challenges different ways.The paper presents results of institutional assessment conducted with main purpose evaluate adequacy public manage perform maintenance...

Rezime: Lokalni put Vizić-Erdevik povezuje dve regije Srem i Bačku.Postojeća konekcija između je dužine oko 21km, dok veza preko predmetne deonice približno 7.5km.Ovaj se nalazi u ravničarskom predelu ukupna širina voznih traka iznosi svega 4m.Postojeći kolovoz na trasi većim delom od tucanika (frakcije 4/32mm) prilikom atmosferskih padavina dolazi do ispiranja zrna agregata slabljenja površine kolovoza pri čemu pojava oštećenja vidu rupa denivelisanih površina koje dovode smanjene...

Concrete pavement represents a rigid structure in relation to asphalt pavements.For the analysis, three pervious tests were carried out, on which of compressive strength and density performed.The examination was done at 7 28 days, where samples cured laboratory conditions.The mixtures differ by type amount cement, aggregates, superplasticizers, aerators watercement factors.After completion tests, it concluded that all concrete fulfill requirement for production, is, after days is greater...

The paper presents the application of cement stabilization in world and our country.In addition to literature review, basic physicalmechanical tests pavement base without use hydraulic binder with different percentages participation (2, 4, 6%) were given.The manufacturer LaFarge HRB 12.5 was used as a binder, material on which this tested is clay taken vicinity Belgrade.Using it concluded that any percentage leads significant improvement placenta thus improves load-bearing capacity structure.