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...

(1) Background: The construction industry continuously seeks sustainable alternatives to traditional materials for subgrade material in pavement construction, aiming mitigate environmental impact while maintaining performance standards. This study investigates the feasibility of incorporating phosphogypsum (PG) and contaminated sediment into materials, focusing on their physico-chemical physico-mechanical properties. (2) Methods: properties, performance, mechanisms solidified with (3% 5%...

This study delves into the quality and quantity of sediment in Great Bačka Canal near Vrbas, examining its physicochemical composition over a span twenty years. The primary aim is to enhance monitoring risk assessment methodologies while advocating for paradigm shift management—from treating sediments as waste recognizing them valuable resources. Analyzing samples heavy metals, including mercury, arsenic, cadmium, chromium, lead, zinc, nickel, copper, alongside polycyclic aromatic...

At the bottom of canal, there are large deposits silt. During cleaning and scouring river bed, so-called by-product sediments formed. Landfills made along bed because it is a relatively close distance. preparation this paper, idea refers to examination sediment with additional binders see its application in road industry. The tests that will be presented paper are: granulometric composition soil, determination maximum volumetric mass at optimal humidity (Proctor's test), soil's bearing...

Over the past few decades, sediment has gained recognition as a challenging resource, attributed to its potentially harmful effects and substantial volumes found within aquatic environments. Although, traditionally viewed waste product of dredging operations, holds immense potential for beneficial use across multiple sectors, offering economic benefits while addressing environmental concerns. The utilization construction material constituent offers sustainable alternative virgin resources,...

The management of roads, as well their maintenance, calls for an adequate assessment the load-bearing capacity pavement structure. This serves basis on which future maintenance requirements are planned and plays a significant role in determining whether rehabilitation or reconstruction structure is required. stability depends large number parameters, it not possible to fully assess all them when making estimation. One most parameters modulus elasticity asphalt layers (EAC). goal this study...

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...

The aim of the research presented in this paper is experimental confirmation numerically defined shapes Strut-and-Tie models, designed according to EN 1992-1-1 recommendations, and obtained from software “ST method”. Three reinforced concrete deep beams with openings were tested. Each them had same dimensions quality material characteristics. specimens, constructed as simply supported beams, loaded two concentrated forces tested for bending until failure. specimen was different reinforcement...

In recent decades, sediment has been recognised as a problematic resource due to its potentially harmful effects and the large quantities present in water bodies. There is need properly manage of dredged sediments so that they can be used not necessarily treated waste product. This research investigates ageing maturation solidified/stabilized mixtures contaminated with fly ash lime. The on microstructural properties chemical integrity were studied for 7 days, 28 years using scanning electron...

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).

Experimental and computational research on the behavior of small-scale large-scale fiber-reinforced concrete (FRC) beams is presented in this paper. The experimental part included bending tests, which were conducted three 1.3 m long by 0.1 wide 0.15 high rectangular simply supported beams, test that was 12.8 0.2 two-chords girder. mixture designed with environmentally more justifiable supplementary materials (binder fibers), striving for sustainable excellence. To accurately predict...

This paper presents the results of experimental research and numerical analysis three reinforced concrete deep beams with openings, designed by Strut-and-Tie method according to EN 1992-1-1 recommendations. All tested specimens were made in full size, same geometric characteristics quality materials. The specimens, constructed as simply supported beams, loaded two concentrated forces for bending until failure. Each specimen was different reinforcement layout determined parameter variation...

Concrete is the most widely used construction material in world, so recent years more attention has been dedicated to its durability.This paper provides an overview of results different studies that examined impact natural zeolite on properties mortar/concrete (used as a partial replacement cement), well comparison with obtained experiments where fly ash used.Natural volcanic or volcano-sediment (there are deposits Serbia), while by-product coal combustion thermal power plants.

The most important environmental concerns in the use of concrete civil engineering practise are emission CO2 during manufacturing cement and consumption non-renewable resources as raw materials.If an alternative material can substitute at least a portion cement, but that does not contribute additional to atmosphere and/or conserves natural resources, possesses cementitious (binder) properties, then impact industry be reduced.Based on this premise, SCMs increasingly being investigated used...