Iris Publishers Civil Engineering Open Access Journals

 Iris Publishers - Journal of Civil Engineering Evaluation of Flexural Capacity of RC Elements Exposed to Fire When Reinforced concrete flexural members of a structure are exposed to fire they tend to lose their original flexural capacity. It is important to assess the reduction in flexural capacity. This paper presents a simple numerical model for prediction of residual moment capacity of fire damaged RC flexural element after cooling to ambient temperature. The prediction of residual moment capacity of fire damaged RC element has been carried out by assessing the residual properties of fire affected concrete and steel. The proposed prediction model has been arrived at by comparing various constitutive models available in literature for the residual strength of steel rebar and concrete. A total of 9 fire damaged RC beams (tested after cooling) were selected from literature for this study. It is seen that the predicted results were then compared with the experimental results. The p...

 Iris Publishers - Peer Review Journal of Civil Engineering The Role of Synthetic Superhydrophobic Surfaces in Construction Materials The bio-inspired superhydrophobic surfaces have the capability to repel the water and this characteristic has great significance in industries. Superhydrophobic surfaces are playing a vital role in the variety of applications in different fields due to their chemical and physical properties. In this paper, the role of synthetic superhydrophobic surfaces in construction materials was discussed in detail. The fabrication techniques of superhydrophobic surfaces, their properties, and their applications were also reviewed. There are a lot of construction materials that are used in buildings, roads, railways, airports, bridges, dams, and water tanks. Many researchers have fabricated superhydrophobic coatings on different concrete surfaces and they found it very helpful to overcome the problems. This review article presented the three major problems and th...

  Iris Publishers - Journal of Civil Engineering Determination of Concrete Characteristics Using Destructive and Non-Destructive Tests Mechanical resistance and deformation are important characteristics of concrete, because they play a great role not only for the stability, but also for the durability of the structures. When concrete is subjected to the action of a rapidly increasing load, it behaves like a brittle material. On the one hand, its rupture is not preceded by significant deformations and on the other hand, its tensile strength is much weaker than its compressive strength. The tensile strength even vanishes completely if shrinkage cracks have developed. This paper presents an experimental study in order to determine some characteristics of the concrete made for the production of reinforced concrete beams. To this end, cylindrical specimens of dimensions 16 x 32 cm were prepared in the laboratory using local materials for mechanical characterization by destructive and no...

 Iris Publishers - Scholarly Open Access Journal of Civil Engineering Review Study of Dynamic Relaxation Numerical Technique Used in Bending of Laminated Composite Plates The method of dynamic relaxation (DRM) in its early stages of development was perceived as a numerical finite difference technique. It was first used to analyse structures, then skeletal and cable structures, and plates. The method relies on a discretized continuum in which the mass of the structure is assumed to be concentrated at given points (i.e. nodes) on the surface. The system of concentrated masses oscillates about the equilibrium position under the influence of out of balance forces. With time, it comes to rest under the influence of damping. The iterative scheme reflects a process, in which static equilibrium of the system is achieved by simulating a pseudo dynamic process in time. In its original form, the method makes use of inertia term, damping term and time increment. Read More ... Full Text For Mor...

  Iris Publishers - Peer Review Journal of Civil Engineering The Revival of Old Hydraulic Turbines for Innovative Hydropower Generation: Water Wheels, Archimedes Screws, Deriaz and Girard Turbines Hydropower is the most developed renewable energy technology. It has evolved over hundreds of years, with the highest growth in the Twentieth century. Some technologies are continuously improving, while others have been forgotten. Four emerging hydropower turbines developed in the past, but forgotten in the last century, are here presented: water wheels, Archimedes screws, Deriaz, and Girard turbines. Their revival is related to the new needs that hydropower must face. The Updraft free-exit-flow turbine, not yet a commercial product, is also described. Read More ... Full Text For More Articles in  Current Trends in Civil & Structural Engineering  please click on  https://www.irispublishers.com/ctcse For More Open Access Journals in  Iris Publishers  please cli...

  Iris Publishers - Open Access Journal of Civil Engineering Legal challenges of 5G Mobile Technology in the European Union -Strategic Environmental Assessments & necessary update of the EIA Directive Do plans and programs for the comprehensive expansion of the 5G network in the member states of the European Union require the implementation of Strategic Environmental Assessments? To answer this question, the relevant directives at Union level were analyzed. In addition research on the effects of mobile communications technology was done. The result shows that Strategic Environmental Assessments are required in the member states. Also, a regulatory deficit in the European Union’s Environmental Impact Directive was revealed. Read More ... Full Text For More Articles in  Current Trends in Civil & Structural Engineering  please click on  https://www.irispublishers.com/ctcse For More Open Access Journals in  Iris Publishers  please click on  https:/...

 Iris Publishers - Journal of Civil Engineering Project and Design of a Special Agricultural Warehouse Developed in Phases in Valencia (Spain) This article describes the developing phases to build warehouses for a Pomelo Company at Valencian County (East of Spain). The warehouses are remarkable because they did not have many intermediate columns. Spatial and lightweight solutions are adopted and described. In the Projects also natural ventilation and lighting have been considered with a successfully result. Erection conditions and Regulations have been taken also account. It has been an inspiration motive for other consultants. Read More... Full Text For More Articles in  Current Trends in Civil & Structural Engineering  please click on  https://www.irispublishers.com/ctcse For More Open Access Journals in  Iris Publishers  please click on  https://irispublishers.com/journals.php To Know indexing list of  Iris Publishers  please clic...

  Iris Publishers - Scholarly Journal of Civil Engineering Some Major Challenges Faced by Civil Engineering Professionals in the Execution of their Profession and the impact of the challenges to the Environment, Society and Economy of Developing Countries Civil Engineering is that part of engineering that deals with the application of mathematical and scientific knowledge to improve infrastructures like bridges, dams, buildings, roads, railways and dams and common utilities to help improve human lives and our society. The civil engineering profession involves a lot of sub- disciplines and deals with the design, construction, and maintenance of the built environment. Civil engineers have that social responsibility to properly maintain and adapt structures that we depend on in our daily life and are also involve in making sure the infrastructures are adapted to meet natural disaster, population growth and climate change challenges. They have that responsibility to find and implement ...

  Iris Publishers - Peer Review Journal of Civil Engineering Evaluation of the Quality of Concrete Structures by the Rebound Hammer Method The quality problems encountered in concrete structures appear at different stages of the construction of works, it is for this reason that for a long time there has been an increased demand for more precise and, at the same time, more flexible methods of concrete quality assessment. This paper presents some notions concerning the Schmidt rebound hammer test which is one of the non-destructive methods most used for the recognition of the condition of building structures. This test is quick and easy, it makes it possible to control the quality of the construction and to indirectly measure the compressive strength of concrete in situ. The rebound hammer calibration procedure was detailed on an example by presenting the different steps. The influence of several factors affecting the rebound hammer test, whether related to the properties of concrete...

  Iris Publishers - Open Access Journal of Civil Engineering Active Control of the Nonlinear Vibrations in Suspension Bridges due to Wind and Vertical Moving Loads The flexibility and low damping of the long span suspension bridges make them prone to nonlinear vibrations due to wind and moving loads. The self-excited wind forces introduce additional nonlinear excitations in addition to the geometric nonlinearity of the bridge. In order to control the nonlinear dynamic response in the suspension bridges, one has to introduce more damping forces (passive damping or active damping or both) to the bridge. In order to introduce the passive and/or active damping forces, one has to propose a control mechanism. The feasibility of using any proposed control mechanism is assessed before its approval. This paper considers the nonlinear dynamic response of a suspension bridge subjected to wind and vertical load moving with a constant speed on the bridge deck. To control the nonlinear dynamic r...