Can supervise: YES
Recent/current research interests are broad ranging from Engineering and Higher Education, Equity and Diversity, Engineering Professional Practices and Competencies, Mentoring, Engineering and Project Management, Sustainability (materials and waste product utilisation), Precast and Novel Concretes including Geopolymer, Civil Engineering Materials and Structures.
Engineering Mechanics, Structural Design (Reinforced Concrete), Structural Analysis, and Precast Concrete Design and Construction.
Paull, M, Lloyd, N, Male, SA & Clerke, T 2019, 'Engineering work integrated learning placements: the influence of capitals on students' access', JOURNAL OF HIGHER EDUCATION POLICY AND MANAGEMENT, vol. 41, no. 5, pp. 534-549.View/Download from: Publisher's site
Matemba, E & Lloyd, N 2017, 'Internationalisation of Professional Engineers: A Review of Globalisation of Engineering Education and Accreditation-Challenges from an African Perspective', INTERNATIONAL JOURNAL OF ENGINEERING EDUCATION, vol. 33, no. 6, pp. 2083-2097.
Lloyd, NA & Szymakowski, J 2017, 'Student experiences in first-year engineering classrooms–exploring issues of gender in an Australian programme', Australasian Journal of Engineering Education, vol. 22, no. 1, pp. 23-31.View/Download from: Publisher's site
© 2017 Engineers Australia. The 2016 cohort of first-year engineering undergraduates, arranged in groups of about 20, consisted of eight groups with at least one-third females, five groups with one or two females and sixteen male-only groups. The groups had a common timetable for all lectures, workshops, tutorials and laboratories for eight core units. The hypothesis was groups with a higher proportion of females would enable female students to self-select small groups of gender parity or majority for teamwork activities in classrooms. Furthermore, these small groups would be microenvironments supportive of female verbal participation and engagement whilst minimising discrimination. Qualitative and quantitative data collection from classroom observations preceded quantitative data collection using a survey instrument and student and learning analytics data. Whilst acknowledging the limitations of the research and complexity of interacting factors, including those from pre-university that were outside the scope of the research, the strategy of group allocation piloted in 2016 did create microenvironments of gender parity or majority. Classroom observations indicate female students engaged. Further research to investigate the disparity of threat to challenge ratios reported by male and female students is recommended.
Lloyd, NA & Rangan, BV 1996, 'Studies on high-strength concrete columns under eccentric compression', ACI STRUCTURAL JOURNAL, vol. 93, no. 6, pp. 631-638.
Lloyd, N, Male, S & Paull, M 2018, 'Strategies to Increase Equity of Access to Engineering Internships', Proceedings AAEE2018, Australasian Association for Engineering Education Conference, AAEE, Hamilton, New Zealand.View/Download from: UTS OPUS
Internships, one type of Work Integrated Learning (WIL), are an important part of the development of employability competencies. Research across professions other than engineering has indicated that unpaid internships may be subject to class based privilege and induce financial stress. Educational practices in engineering enabling unpaid internships may further disadvantage students from equity groups: low socio economic status, disability, culturally or linguistically diverse, rural or remote students, and women in non-traditional areas.
Funded by the National Centre for Student Equity in Higher Education, the extent of unpaid work placements, the role of positive social capital, accessibility and barriers to successful WIL for equity group students are being examined. We ask how the practices of the engineering industry and higher education community may embrace diversity by facilitating access to successful WIL opportunities. Successful WIL is identified by enhanced career, education or employability prospects, and positive student wellbeing.
The mixed-methods study includes: interviews; a survey including free-response questions and a resilience instrument; and analysis of students' reflective reports. Seven participants interviewed to date have related their experiences of engineering-related internships; how they secured positons, the quality of their experiences, whether they were paid, and the impact of these experiences on their approach to their engineering education, career progression and well-being. These seven participants shared perceptions of over 17 internships of which six were unpaid. Preliminary insights from these initial interviews and free-responses from the first round of surveys only are reported in this paper. The outcomes from an integrated data analysis process incorporating: further interviews; survey data including the resilience instrument data; and reflective reports, will be published by the funding body a...
Lloyd, N, Agrawal, A & Cheng, E 2018, 'Beyond the qualification – a guided self-assessment for future-proofing engineering education for a diverse workforce.', https://s3-us-west-2.amazonaws.com/18aaee/proceedings/AAEE18_Proceeding…, 29th Australasian Association of Engineering Education (AAEE) conference 2018, AAEE, Hamilton, New Zealand.
Beyond the qualification – a guided self-assessment for future-proofing engineering education for a diverse workforce is focussed on enabling participants to self-assess their current capacity in preparing students for the diverse workforce. Participants will brainstorm their understanding of the complex issues of diversity in engineering education and the workplace using the sociology concept of Boundary Objects. From this brainstorming activity, small teams of participants will collaboratively develop action plans for personal, institutional and/or stakeholder change. The workshop is not gathering data for research purposes and is focussed on establishing skills and a network of support for change. Whilst the facilitators have a range of experiences and examples from their practices across many institutions, the workshop focusses on generation of new ideas to support students' development of diversity competencies. Participants can use the Boundary Objects concepts and presented framework elsewhere in their practice including as a teaching and professional development tool.
Lloyd, N, Male, S & Paull, M 2018, 'Access to work integrated learning: The lived experience', Student futures. Proceedings of the 27th Annual Teaching Learning Forum,, West Australian Network for Dissemination Teaching and Learning Forum 2018, WAND, Fremantle, Western Australia.View/Download from: UTS OPUS
Work integrated learning (WIL) and internships are an important part of the suite of employability activities utilised by universities in their increasing efforts to ensure that graduates make a successful transition to the workplace. In Engineering, this is not only desirable but a compulsory part of the course, recommended by Engineers Australia as part of program accreditation criteria. Engineering has a long history of ensuring that graduates have been exposed to the workplace before they enter the profession, including via summer placements, and evidence of unpaid work experience. Research across other professions has indicated that unpaid internships may be subject to "class based privilege" (Shade & Jacobsen, 2015, p 188) and induce financial stress for students (Grant-Smith & Gillett Swan, 2017). With increasing economic pressures on students, lowered levels of employment and short and part-time project based employment in the "gig economy", the nature and quality of internships adds another dimension to the picture for graduate employability. Unpaid placements may be an additional employability barrier for engineering students from equity groups including women in non-traditional areas, low SES students, and those from non-English speaking backgrounds. Preliminary findings will be presented from research (funded by the National Centre for Student Equity in Higher Education) into the lived experience of student engineers in both paid and unpaid internships, including the barriers faced by individuals from equity groups, and potential improvements to their outcomes that industry and universities can facilitate.
Urquhart, S, Whyte, A & Lloyd, N 2017, 'The development of a more efficient internal tender procedure framework for Australian construction contractors', Association of Researchers in Construction Management, ARCOM - 33rd Annual Conference 2017, Proceeding, pp. 693-702.
With increasing corporate governance requirements the nature of Australian construction contractors' (CC) internal tender review procedures is changing. A research program is underway to determine the effectiveness and efficiency of such changes and whether they are producing improved CC business results. To facilitate this objective a better understanding of current CC tendering practices and procedures was sought through detailed semi-structured qualitative interviews with 18 CCs, including five of Australia's largest contractors. Drawing from these interviews and extracts of tender procedures provided by nine of the CCs, a new internal tender procedure qualitative flowchart is developed, running from prospect identification to contract award. Many CCs now spend more than 10% (some over 15%) of their tender period hours addressing their internal tender reviews due to increased involvement of legal, commercial, finance and risk departments. Many CCs advised their key tender focus is risk mitigation to avoid the company winning a potential loss making project rather than determining a tender winning 'mark-up' value. While providing greater insight into the inner workings of CCs' internal tender procedures, the new tender process flowchart also enables CCs to benchmark their tender procedures against empirically researched current practice.
Lloyd, N, Van Der List, K & Re, N 2013, 'Recycled concrete and demolition waste aggregate in concrete', ISEC 2013 - 7th International Structural Engineering and Construction Conference: New Developments in Structural Engineering and Construction, pp. 609-613.View/Download from: Publisher's site
Copyright © 2013 by Research Publishing Services. Demolition and construction waste may be used as a partial replacement of virgin coarse aggregate in concrete, although the current industry uptake of this is low despite sustainability advantages. The variability of demolition and concrete waste is cited as a reason for its low usage rates. This research examined the variability of the waste from different suppliers over time. The recycled aggregates were also compared to each other by determining their bulk density, angularity number and flakiness index. Concrete mixtures where then prepared with partial replacement of the virgin coarse aggregate in the order of 30-50%. The compressive and tensile strengths, water absorption and apparent permeable voids of these mixtures were tested and the results compared to a base mixture made using only natural aggregates. The strength of the concrete; compressive and tensile decreased with the addition of recycled aggregate. The grading of the aggregate was found to have the most impact on the concrete strength. The inclusion of the recycled aggregate increased the water absorption and permeable voids. The 30% replacement has the greatest potential for application.
Sahouryeh, D & Lloyd, N 2013, 'Geopolymer concrete sulphate resistance', ISEC 2013 - 7th International Structural Engineering and Construction Conference: New Developments in Structural Engineering and Construction, pp. 559-564.View/Download from: Publisher's site
Copyright © 2013 by Research Publishing Services. Geopolymer concrete is a concrete consisting of non-cement based binder, in the case of this research, the binder was fly-ash activated with sodium silicate and sodium hydroxide. Geopolymer concretes may offer sustainability advantages due to their use of by-products and replacement of cement. Research is required on their structural, mechanical and chemical properties. This research analyzed the effect of different curing regimes and exposure regimes on the sulphate resistance of geopolymer concrete. Geopolymer concrete cylinders that had been steam cured at different temperatures were exposed to a 10% concentrated sodium sulphate solution for one or two months in either fully submerged or partially submerged conditions. Control specimens were not exposed. Precipitate formation occurred on the partially submerged specimens. It was observed that only mass gains occurred in the exposed specimens. XRD indicated no expansive by-products had formed from the exposure and compressive strengths remained unchanged throughout the exposure period. Curing temperature affected the initial rate of strength gain but did not have an impact on the sulphate resistance of the geopolymer concrete.
Hiew, KH, Lloyd, NA & Chandler, I 2011, 'PERFORMANCE OF CARBON AND GLASS FIBRE COMPOSITE CONCRETE BEAMS WITH DIFFERENT END ANCHORAGES', Proceedings of the 7th International Conference on Steel and Aluminium Structures (ICSAS 2011), 7th International Conference on Steel and Aluminium Structures (ICSAS), RESEARCH PUBLISHING SERVICES, MALAYSIA, pp. 228-233.View/Download from: Publisher's site
Lloyd, NA & Rangan, BV 2010, 'Geopolymer concrete with fly ash', 2nd International Conference on Sustainable Construction Materials and Technologies, pp. 1493-1504.
Geopolymer concrete results from the reaction of a source material that is rich in silica and alumina with alkaline liquid. A summary of the extensive studies conducted on fly ash-based geopolymer concrete is presented. Test data are used to identify the effects of salient factors that influence the properties of the geopolymer concrete and to propose a simple method for the design of geopolymer concrete mixtures. Test data of various short-term and long-term properties of the geopolymer concrete and the results of the tests conducted on large-scale reinforced geopolymer concrete members show that geopolymer concrete is well-suited to manufacture precast concrete products that can be used in infrastructure developments. The paper also includes brief details of some recent applications of geopolymer concrete.
Lloyd, N & Rangan, V 2009, 'Geopolymer concrete - Sustainable cementless concrete', American Concrete Institute, ACI Special Publication, pp. 33-53.
Geopolymer is a specialized material resulting from the reaction of a source material that is rich in silica and alumina with alkaline solution. It is essentially portland cement free concrete. This material is being studied extensively and shows promise as a greener alternative to normal portland cement concrete. It has been found that geopolymer concrete has good engineering properties with a reduced carbon footprint resulting from the total replacement of normal portland cement. The research undertaken at Curtin University of Technology has included studies on geopolymer concrete mixture proportions, structural behavior, and durability. This paper presents the results on mixture proportions development to enhance workability and strength of geopolymer concrete. The influence of factors such as: curing temperature and régime, aggregate shape, strength, moisture content, preparation and grading, and the addition of superplasticizers, on workability and strength are presented.
Langsford, RP, Lloyd, N & Sarker, PK 2007, 'Shear strength of steel fibre reinforced prestressed concrete beam', INNOVATIONS IN STRUCTURAL ENGINEERING AND CONSTRUCTION, VOLS 1 AND 2, 4th International Conference on Structural Engineering and Construction, TAYLOR & FRANCIS LTD, Melbourne, AUSTRALIA, pp. 441-446.
LLOYD, NA & RANGAN, BV 1970, 'High-performance concrete columns', HIGH-PERFORMANCE CONCRETE - PROCEEDINGS, ACI INTERNATIONAL CONFERENCE, ACI International Conference on High-Performance Concrete, AMER CONCRETE INST, SINGAPORE, SINGAPORE, pp. 379-390.