Adhesives in Civil Engineering

Authors

Applications of Tensegrity Structures in Civil Engineering

Getechnical monitoring by digital precise photogrammetry

The rapid technological modernization in civil engineering is diligentlyconnected to the inte: rdependenceamongst mathematics and civil engineering. This demands civil professionals be more competent and trustworthy in their mathematical and engineering abilities. This paper reviews the tendencies of engineering complications that involvemathematical-oriented fundamentals. Introductions to the civil engineers at the place of workproposeunderstandings of the nature of complications in the actualbackground and an examination of the mathematical-oriented fundamentals in cracking these difficulties. The findings recommendthat the mathematicalinformative endeavours assimilatetrustworthy problem-solving understandings for civil engineering scholars. Functioning research is one of the modernsubdivisions of practical mathematics. Due to the extensive applicability and substantialusefulness, its expansion became significant, the business revolution and the spectacular growth of the calculationprocedure had animportant role. The operative research deals with the resilience of afinestconclusion as a symbol of the defrayal of deterministic and stochastic depictionsorganized for the learning of monetary andorganizationalspectacles. From a rationalmethodology, the development of the elaboration of a conclusion is edged by numerous decisional prototypes, as well as the eminence quodictating the settlement commissioning a result is measured by the volume, erection and excellence of the existingdata. Subsequently, the supervisors may use mathematical prototypes of optimization which are supportive for captivating a conclusion under the conditions of reliability, which means all importantessentials are known, as following: Decisional imitation; Decisional board; thepractice of global utility. In most of the subjectsacknowledged, it is assetobserving that the use of mathematics is extensively applied in civil and structural engineering complications. The uncontaminated mathematical connotations seem to be subliminallysecreted and entrenched behind the ‘civil and structural’ of the complications, but it remains appropriate to know whereverdiagnostic results originated from. Therefore, it can beaccomplished that the mathematics-oriented acutethoughtfulfundamentals are suggestivelyrequired to crackseveral civil engineering places of work problems.

In this paper a new approach for quantitative non-destructive testing (NDT) of near-surface structures in civil engineering (CE) with active thermography is presented. It adopts the method known as pulsed phase thermography (PPT) for the special requirements of NDT-CE and was developed in a German research project of the Federal Institute for Materials Research and Testing (BAM) in cooperation with the Technical University of Berlin. The new quantitative concept that might be understood as a square pulse thermography in frequency domain or an amplitude-expanded PPT with square pulse heating is based on the thermal diffusivity of the material and the characteristic frequency of the negative maximum phase and amplitude contrast. It aims at complementing the established approaches for defects depth calculation for measurements with long heating and observation times quite usual at active thermography in CE but is easily extendable to other fields of application. After an introduction to the basics of active thermography in CE and the thermography concept of BAM, qualitative results of several case studies will be presented. The main focus of the last section of this contribution is on applications of the new quantitative approach at test specimens of BAM to determine the concrete cover of artificially manufactured defects.

Promulgation of the Higher Education Qualifications Framework (HEQF) tasks the Council for Higher Education (CHE), South African Qualifications Authority (SAQA) and Department of Higher Education and Training (DHET) and standards generating bodies (Engineering Council of South Africa (ECSA)) with guiding institutions through the implementation of the new framework. Implementation is through a phased approach spanning a five-year period beginning in January 2011 and with anticipated culmination in December 2014. As the Higher Education Framework Handbook (CHE 2011:2) states: ‘all existing institutions, public and private, offering existing and previously accredited higher education programmes will be impacted upon by this process in some manner or form, whether it be through a minor name change or a complete renewal of the programme content.’ Consequently, universities of technology (UoT’s) have embarked on a curriculum renewal process and the Civil Engineering Department of Durban University of Technology (DUT) is no different. It is within this context of participation and multiple contributory environments of different role-players that this study was founded. This research explored the Civil Engineering industry’s involvement in the curriculum renewal at DUT with the intention of understanding its contribution and influence in the renewal process and particularly in terms of curriculum design. The scope of the study was restricted to DUT Civil Engineering Department and their graduates, with subjects selected from a convenience sample of DUT Civil Engineering Department’s database of employers that have in the past and presently employ DUT graduates and/ or Work-Integrated Learning (WIL) students. The sample constituted organisations from the contracting, consulting and para-statal fields of employment. A questionnaire was designed containing both open-ended questions and rating scales that explored and probed the Civil Engineering industry level of involvement in the curriculum and curriculum renewal activities at DUT. In addition, interviews were conducted with seasoned Civil Engineering staff that have interacted with industry at various levels to gain their view of industry’s involvement with design of the Civil Engineering curriculum. Data from both questionnaires and interviewees overwhelmingly suggested that industry is not directly involved with the curriculum renewal currently underway at DUT, some respondents only gathered that such an activity was taking place through the medium of the questionnaire. This suggests that the resultant curriculum will be void of much industry engagement and influence. The nature of engagement that does occur is largely through the utilisation of DUT graduates or WIL students. Engagement occurs most commonly when curriculum issues are raised by staff at interviews of employers during WIL, suggesting that the nature of association with DUT is limited to employment of students or graduates. It is inferred that industry has very little direct input into the curriculum. DUT Advisory Board is considerably under-utilised for its intended purpose of engaging industry on curriculum issues, and its existence is unfamiliar to industry at large. As much as the Advisory Board is the most appropriate avenue to discuss curriculum issues, it has limitations in that its function is not entirely realised. The data generated also resoundingly suggests that industry is fully supportive of an inclusive participation process. Data further suggest that industry genuinely wants to be involved in curriculum discussions, and decisions for reasons ranging from participating to create more relevant course content, to contributing to creation of graduates with more appropriate employability attributes. Participants from industry further intimated that their role remains for on-site experiential learning: they provide the working knowledge to complement the academic knowledge provided by DUT. They also consider themselves to be providers of other facets that contribute to a holistic graduate, and assume further roles such as those of mentors and supervisors. The likely outcomes of their influence would be rapid engagement of graduates within the Civil Engineering field. A symbiotic relationship therefore becomes apparent between DUT and industry, where with more input into the curriculum by industry; a more work- orientated graduate is produced to better serve the needs of industry. The following recommendations emerge from the findings of this study: Since most of industry’s engagement occurs during WIL interviews, it would be prudent if a generic curriculum- based questionnaire is devised. This should be filled in by employers during student WIL visitations by staff in addition to the existing questionnaire. In doing so DUT would be proactive in literally ‘taking curriculum issues to them’. The DUT Civil Engineering Department should target those companies that have an interest in making a concerted effort by enlisting them onto the Advisory Board. From an institutional perspective DUT should be more proactive and advertise the existence of such an entity, created solely for curriculum discussions with the public, and particularly with industry. Assessments, course content and the project component of the programme generated considerable comments from industry that the Civil Engineering Department could take into consideration during the curriculum renewal process.

Concrete and steel are two indispensable important construction materials. As the rapidly economic development and urbanization proceeding, the construction industry is towards to high-end direction development. In high-rise buildings, the advantage of steel structure is obvious, and owns considerable economic and social benefits. This paper clarifies the main characteristic of the steel structure in civil engineering; analysis the basic principle that maintain the stability of steel structure; discusses the construction method of steel structure in civil engineering, and puts forward the development trend of steel structure in civil engineering.

Global warming has or will affect all aspects of human life on Earth. We will focus on the influence of global warming in civil engineering and the structural health monitoring (SHM) technologies here. Obviously, reinforcing concrete (RC) structures are the most important structural style in civil engineering. With the development of global warming and further deterioration of the environment, the conditions of RC structures now becomes more atrocious than that of before. In the past few decades, many tremendous bridges, skyscrapers, super dams and other huge harbor works have been built. These structures are expected to serve safely for tens of years to hundreds of years. Unfortunately, the corrosion of the reinforcing steel, called as “cancer of the steel”, has been a world-wide problem which deteriorates the durability of RC structures and degrades the serviceability severely. The corrosion of RC structures has resulted in very high repair costs, which sometimes are even much greater than the initial construction cost, and in some extreme situations, leaded to collapse of the structure. The corrosion of the reinforcing steel in concrete will then be a fatal attack to the durability of RC structures. Fortunately, structural health monitoring systems enable scientists and engineers to identify the status of structures, and then provide the foundation for safety assessment, service-life prediction, maintenance & reinforcement and full-life design of structures.

Curved beam, plate, and shell finite elements are commonly used in the finite element modeling of a wide range of civil and mechanical engineering structures. In civil engineering, curved elements are used to model tunnels, arch bridges, pipelines, and domes. Such structures provide a more efficient load transfer than their straight/flat counterparts due to the additional strength provided by their curved geometry. The load transfer is characterized by the bending, shear, and membrane actions. In this paper, a higher-order curved inverse beam element is developed for the inverse Finite Element Method (iFEM), which is aimed at reconstructing the deformed structural shapes based on real-time, in situ strain measurements. The proposed two-node inverse beam element is based on the quintic-degree polynomial shape functions that interpolate the kinematic variables. The element is C2 continuous and has rapid convergence characteristics. To assess the element predictive capabilities, several circular arch structures subjected to static loading are analyzed, under the assumption of linear elasticity and isotropic material behavior. Comparisons between direct FEM and iFEM results are presented. It is demonstrated that the present inverse beam finite element is both efficient and accurate, requiring only a few element subdivisions to reconstruct an accurate displacement field of shallow and deep curved beams.

This text begins with the social employment demand on graduates major in civil engineering, elaborates the connotation of cultivation mode of practical talents, and discusses the construction of practical talents training mode system from the perspectives of training objective and training standard, curricular system construction, teaching staff construction, and training program and ways. It emphasizes the importance of practical talents training mode in cultivating civil engineering students' practical ability, and puts forward supporting measures for implementing civil engineering practical talents' training mode from the perspectives of teaching content, practical teaching proportion, and teaching staff.

Whilst verifying the quality of welded joints in railway bridges in Poland, it was found that many of them contained cracks of technological, fracture and fatigue origin. This problem is associated with early welded bridge structures, in which many technological imperfections were discovered. General data for x‐ray testing on approximately 200 bridges in service are given. The tests were carried out over the period 1967–1990. The number of joints tested was 15 875 and the number of cracks discovered in the joints was 437 in the 34 bridges tested. Repeated tests on the joints containing cracks in time intervals of 5–8 years neither demonstrated further growth in the cracks nor the formation of new cracks. All the cracks discovered were formed during welding operations where there was no service loading. An analysis of the stress levels necessary for the development of crack growth was carried out via fatigue laboratory tests on three butt splice models which were similar to the joints in the bridges tested. Concurrently, the probable stress level near to the cracks was determined analytically. The calculated and measured stresses under service loadings did not exceed empirically assessed weld endurance limits for these joints and confirmed no crack growth. Hot cracks and other welding imperfections in welded joints in structures are permissible if there is neither growth in service nor resistance or rigidity loss of the structure.

The inspection of building structures, especially bridges, is currently made by visual inspection. The few non-visual methodologies make use of wired sensor networks, which are relatively expensive, vulnerable to damage, and time consuming to install. Systems based on wireless sensor networks should be both cost efficient and easy to install, scalable and adaptive to different type of structures. Acoustic emission techniques are an additional monitoring method to investigate the status of a bridge or some of its components. It has the potential to detect defects in terms of cracks propagating during the routine use of structures. However, acoustic emissions recording and analysis techniques need powerful algorithms to handle and reduce the immense amount of data generated. These algorithms are developed on the basis of neural network techniques and - regarding localization of defects - by array techniques. Sensors with low price are essential for such monitoring systems to be accepted. Although the development costs of such a system are relatively high, the target price for the entire monitoring system will be several thousands Euro, depending on the size of the structure and the number of sensors necessary to cover the most important parts of the structure. Micro-Electro-Mechanical-Systems and hybrid sensors form the heart of Motes (network nodes). The network combined multi-hop data transmission techniques with efficient data pre-processing in the nodes. Using this technique, monitoring of large structures in civil engineering becomes very efficient including the sensing of temperature, moisture, strain and other data continuously. In this paper, the basic principles of a wireless monitoring system equipped with MEMS sensors is presented along with a first prototype. The authors work on details of network configuration, power consumption, data acquisition and data aggregation, signal analysis and data reduction is presented.

With the rapid development of society and the economy, people's life and property safety importance is also more and more high. Especially the occurrence of the Wenchuan earthquake, people on whether the application of civil engineering construction damping scientific and rational approach was questioned. How to ensure the quality of civil engineering construction, to avoid in the event of earthquakes and other natural disasters, the emergence floor crash event, is an issue for all engineering designers and builders focus on. Because of the relationship with all life safety, so how to use rational scientific method damping to the construction of civil engineering structures is very important and necessary. This study from the passive control, active control, semi-active control and hybrid control methods start with four damping research and analysis, combining their research status. The Benchmark problem of structure control has carried on the simple introduction. Focusing on civil engineering structure vibration control method of systematic review, so as to the future of civil engineering structure suspension construction provides the certain reference function

PROBLEM TO BE SOLVED: To provide a technology for preventing the movement of an inside filling material caused by external force such as billows, and breakage caused by the wear of a bag body, which are problems in installing conventional civil engineering bag bodies, even if the conventional civil engineering bag bodies are used as they are. SOLUTION: This civil engineering structure is constituted by arranging a plurality of civil engineering bag bodies 1 formed using a synthetic fiber net and filled with the inside filling material, putting a net 2 over the plurality of arranged civil engineering bag bodies 1, and connecting the put net 2 to the lower parts of the civil engineering bag bodies 1 through ropes or belts 3 in the tensed state of the ropes or belts 3. COPYRIGHT: (C)2006,JPO&NCIPI

14 December 2023 Tuanku Syed Faizuddin Putra Library, UniMAP, Perlis https://civentech.unimap.edu.my/ The International Conference on Civil Engineering & Technology 2023 (CIVENTECH 2023) took place on December 14, 2023, at the Tuanku Syed Faizuddin Putra Library of Universiti Malaysia Perlis (UniMAP). The conference was organized by the Centre of Excellence for Water Research and Environmental Sustainability Growth (WAREG) and the Faculty of Civil Engineering & Technology (FKTA), UniMAP as co-organizer. This event sponsored by Shan Poornam Metals Sdn Bhd, CIMA Berhad, XSD Paper International Sdn Bhd and Watertech Industrial Sdn Bhd. The conference aimed to provide a specialized platform for researchers, academicians, and industry practitioners to share their expertise and exchange ideas related to the latest developments in Civil and Environmental Engineering research. The conference was conducted in a hybrid mode, accommodating both face-to-face and virtual participation, which enabled broader engagement from local and international participants. There are 10 sessions CIVENTECH 2023 brought together researchers from diverse backgrounds, promoting knowledge enhancement and the establishment of sustainable research networks for future collaborations. Two esteemed keynote speakers were invited for the plenary sessions, i.e., Ir. Dr. Zuraida Zaini Rijal (Senior Engineer, Civil and Structural Engineering Branch, JKR Malaysia Headquarters) and Ts. Naidatul Maziah Latif (Senior General Manager in the Management Sector Construction Industry Development Board (CIDB) Malaysia). This event was also enlivened by the presence of an invited speaker i.e. Dr. An Hong Ki (Senior Lecturer, FKTA, UniMAP). In summary, the success of the conference is a team effort. We would like to thank all the organizing committee, keynote and invited speakers, sponsors and participants, for their invaluable contributions and support, which made this event a great success. We would also like to extend our gratitude to the reviewers for their positive contribution to maintaining the quality of the articles presented in this proceeding. List of Conference Committees are available in this Pdf.