<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper seeks to define the principles of the development of office buildings throughout history, in the light of new research dealing with the needs and habits of a new workforce in the digital age and environment-friendly solutions. To start, we explore the evolution of administrative buildings through the ages, to see how workspaces were designed to accommodate work dynamics of the time and apply contemporary technological solutions. Afterwards, an overview of modern office spaces and emerging business practices aims to define the requirements and expectations put forward by a new workforce, predominantly tied to digital innovation. The resulting research’s purpose is to design a model office space that considers both issues of sustainable building and the needs of the workforce
</abstract>

Office Buildings Throughout Centuries vs now, in the 21st Century – Developing Innovative Space Concepts

<abstract xmlns="http://www.w3.org/1999/xhtml">

The knowledge on office building in the past and present, how the workspace evolved to incorporate contemporary technological breakthroughs, was in this paper combined with goals of sustainable building in a “smart” office building design in Belgrade, Serbia, taking local factors into consideration to create a comfortable space for the employees in a dense urban matrix with a minimal environmental footprint, and considering the workflow of contemporary office spaces, it’s multidirectional input and increasingly horizontal work hierarchy. Issues of proper inputs for building today in the 21st century are thoroughly considered in this paper and respective building’s design features as shown here: how to deal with location, position and orientation of the building, organization of both formal and informal areas, natural ventilation, green glazed surfaces, solar energy, wind turbines, rainwater utilization measures, surrounding vegetation, lighting and appliances, and piezoelectric paving.
</abstract>

Striving for Sustainable Architecture in the 21st Century – Main Issues in the Development of Innovative Office Space Concepts

<abstract xmlns="http://www.w3.org/1999/xhtml">

Beams and columns are one of the important structural elements of buildings to take up transverse loads such as axial load, bending moment, shear, and torsion. Present work is an experimental investigation on the shear, torsion, and axial load behavior of the structural members like columns and/or beams. The reinforced concrete members with 0, 30, and 60 kg/m3 of steel fibers were tested for torsion, shear and axial loading for this study. The twist angle, the load-deflection behavior, the ultimate shear strength, the torsional moment, and the critical moments were obtained for the loading type and steel fiber ratios. The results show that the increasing steel fiber ratio, increased the torsional moment capacity and decreased the shear strength capacity. On the other hand, increasing the steel fiber content increased the both axial load and moment capacity of RC columns. The shear strength and the torsional moment capacities are defined by the provision of current codes of practice such as ACI318-19, Eurocode-2, British, Australian and Turkish Standards.
</abstract>

The Torsional and Shear Behavior of Steel Fiber Reinforced RC Members

<abstract xmlns="http://www.w3.org/1999/xhtml">

The boron active belite cement is a cement type different from the Portland Cement due to the presence of B2O3 at 3–4%. The prominent properties are low hydration temperature, low early strength, and high final strength for the boron active belite cement concrete. The aim of this study is to observe self-compacting concrete properties, which includes boron active belite cement and silica fume, at the high temperatures. Withal, the cement types were decided as CEM I, CEM II, and boron active belite cement. Some mechanical and durability properties of manufactured samples were also investigated, experimentally. The samples were designed for 0.35 water/binder ratio and 2% hyper plasticizer, while the silica fume is replaced 7.5% for cement. Some rheological properties of self-compacting concrete, such as the experiments of flow diameter, flow time (t50), V-flow time, L-box and J-ring were observed at fresh stage. As high temperature related parameters, the samples were planned to be tested for 100, 200, 300, 400, 600 and 750°C, to acquire the compressive strength, tensile splitting strength, ultrasonic pulse velocity, and the unit weight. All the samples met the mentioned relevant criteria of self-compacting concrete. Withal, the presence of the boron active belite cement was enhanced by the flowability of the fresh concrete. The long time resulting compressive and splitting tensile strengths of the samples, which were produced with boron active belite cement implied greater values, then the CEM I and CEM II ones. The increasing high-temperature, decreased the strengths for all samples, and weight loss for the boron active belite cement used samples.
</abstract>

High Temperature Performance of Self-Compacting Concrete Containing Boron Active Belite Cement

<abstract xmlns="http://www.w3.org/1999/xhtml">

Landfill requires a systematic monitoring of its impact on groundwater and surface waters. The paper presents the modeling of pollution migration for cases when leachate penetrates the aquifer layer. For this purpose, a conceptual hydrodynamic model of the aquifer was developed in the program Visual ModFlow Pro, which is a spatial two-layer model. Chloride ion was used as an indicator defining the rate of pollution migration. The results of calculations and modeling of pollution migration in soil-water conditions demonstrated that it is practically impossible for pollutants to penetrate the aquifer, since a sufficient protection is provided by artificial insulation and a layer of sandy clays. A potential pollution migration to groundwater can only occur after a rupture – damage to the insulation layer. In such a case, vertical infiltration will be taking place in the 4aeration zone for a relatively long period, while the migration of pollutants already in the saturation zone (hydrated) will be taking place at a relatively high speed.
</abstract>

Modelling the Migration of Anthropogenic Pollution from Active Municipal Landfill in Groundwaters

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Architecture, Civil Engineering, Environment

Architecture Civil Engineering Environment (ACEE) Journal is an international double-blind peer-reviewed open-access scientific journal published as a quarterly by the Silesian University of Technology (Poland) / De Gruyter.  The ACEE Journal has been founded in 2008 by three faculties: Faculty of Architecture, Faculty of Civil Engineering and Faculty of Energy &amp; Environmental Engineering, and ever since promotes high-quality interdisciplinary research bridging over the three domains of knowledge – architecture, civil engineering and environmental engineering – by providing a common forum for publication and discussion of current results and efforts in innovations.  The scope of the Journal encompasses, but is not restricted to, the following areas: architectural design, urban planning, theory and history of architecture, structural engineering, structural mechanics, building materials, building physics, marine and hydrological structures, roads and bridges, geotechnics, building processes and economics, construction management, air protection, waste management, water engineering, environmental biotechnology, with a special interest in the works reaching beyond single discipline.  ACEE publishes original research papers. Manuscripts should present relevant advances as compared to the state of research. The Journal does not publish review articles, reports, short communications, discussions and diaries on the events, neither does it reprint conference papers previously published in the proceedings. In the latter case extended versions of the conference papers might be considered for publication upon prior agreement of the Editor-in-Chief if a certain level of originality is ensured. The Journal does not publish special issues.  Please visit Architecture, Civil Engineering, Environment website to find the previously published papers.  Rejection rate: 40%  Article Processing Charges  There are no submission nor processing charges for the Authors.   Open Access Policy  This journal provides immediate open access to its content under the Creative Commons CC BY-NC-ND 4.0 license on the principle that making research freely available to the public supports a greater global exchange of knowledge. Under the CC BY-NC-ND 4.0 license users are free to share the work (copy and redistribute the material in any medium or format), if the contribution is properly attributed and used for non-commercial purposes. The material published in the journal may not be altered or built upon. Authors retain publishing rights without restrictions.  Publishing Ethics  For all parties involved in the act of publishing (the Author(s), the journal Editor(s), the Reviewer(s) and the Publisher) it is necessary to agree upon standards of expected ethical behaviour. The ethics statements for the Architecture Civil Engineering Environment are based on the Committee on Publication Ethics (COPE) Best Practice Guidelines for Journal Editors. Details on the publishing ethics are specified in the Editorial Policy document.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  ABOUT SOCIETY  The Silesian University of Technology (SUT) is one of the most prestigious and top-ranked technical universities in Poland, located in Upper Silesia. The University was founded in 1945 as the scientific and teaching base for the most industrialised region in Poland and one of the most industrialised areas in Europe. It is a modern higher education institution with over 70 years of tradition in teaching, research and science. 

Architecture, Civil Engineering, Environment

Volume 14 (2021): Issue 2 (June 2021)

Office Buildings Throughout Centuries vs now, in the 21^st Century – Developing Innovative Space Concepts

Striving for Sustainable Architecture in the 21^st Century – Main Issues in the Development of Innovative Office Space Concepts

The Torsional and Shear Behavior of Steel Fiber Reinforced RC Members

High Temperature Performance of Self-Compacting Concrete Containing Boron Active Belite Cement

Modelling the Migration of Anthropogenic Pollution from Active Municipal Landfill in Groundwaters

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