My research interests lie in the toughness enhancement of brittle matrix composites, which is incredibly important to the practical viability of the built environment. Thus far, my research activities have spanned two broad categories: a) Understanding th fracture mechanics of brittle-matrix composites and, b) Rehabilitation of existing infrastructure. In the first category, my research has been on the fracture mechanics of fiber reinforced gypsum and concrete, where in I focused on both the test method and the material characterization. At UBC (graduate work), I configured an instrumented drop-weight impact machine to study Mode I crack propagation in FRC, and examined the influence of fibres (material, geometry) in crack growth under impact. My research on size effects under impact is among the first on plain concrete and the first known work on FRC. Until three years ago, while at USG (industry), I focused on the mechanisms of failure in gypsum wall-boards, and my proposals have lead to a reduction in board weight. In the second category, I have been involved with the use of innovative materials in repair (parkade, Vancouver) and structural health monitoring (Brookside Cemetery, Winnipeg). The repair of the parking level in Vancouver is the first documented application of hybrid fibre reinforced concrete.
A related and continuing interest is in shotcrete technology, where in I have explored the use of industrial waste and by-products towards a) limiting land-fill problems, b) easing shotcrete production and c) improving shotcrete structural properties. This interest spans both civil and mining engineering applications. In 2007, data from my study on the boiled absorption and permeable voids in shotcrete was used to define the ACI guideline on this topic within the ACI Committee 506 (Shotcrete).
Research Currently in Progress
Current research is along two broad initiatives: a) Development of Tough Lightweight and Controlled Low Strength Building Materials; b) Relating Durability to Fracture Toughness in Cement-Based Materials. Within the first scheme, I am developing fibre reinforced hydraulic lime mortars to enhance durability and toughness in heritage stone masonry structures. Here, I am part of a 3-phase program (with the Universities of Manitoba and Calgary) commissioned by Public Works Canada, on the study of repointing mortars for the seismic rehabilitation of Heritage Masonry Structures with particular emphasis on the rehabilitation of the Parliament of Canada. For the first time, hydraulic lime mortars were characterized at high loading rates, described in detail in journal publications (under review) and one MSc thesis by my student, Ms. Rachel Chan. Also, lightweight composites are being studied for toughness enhancement at high strain rates to be applied in shock absorption and protective construction. This has led to fundamental studies on shear enhancement in RC members, specimen size effects and density effect on the strain rate sensitivity of concrete. Within the second scheme, I am investigating the permeability of high performance concrete under mechanical stress. This effort has the support of CTEP (consortium of members in Alberta with interest in Transportation Engineering). It is expected that this project will lead to a more realistic standardized test method for concrete durability.
V. Bindiganavile and N. Banthia, ‘Impact response of the fiber-matrix bond in concrete’, (Accepted) Canadian Journal of Civil Engineering, 2005.
Vivek Bindiganavile and Nemkumar Banthia, ‘Process Dependence of Shotcrete for Repair’, (Accepted) International Journal of Materials & Product Technology, 2005.
Bindiganavile, V. and Banthia, N., ‘Generating dynamic crack growth resistance curves for fiber reinforced concrete’, Experimental Mechanics, Vol. 45, no. 2, Apr 2005, pp. 112-122.
Bindiganavile, V. and Banthia, N., ‘Comment on: “Size effect for high-strength concrete cylinders subjected to axial impact” by Krauthammer et al.’, International Journal of Impact Engineering, Vol. 30, no. 7, August 2004, pp. 873-875.
Bindiganavile, V. and Banthia, N., ‘Crack growth resistance of fiber reinforced concrete under drop-weight impact loading’, ACI SP-216, Fiber Reinforced Concrete: Innovations for Value, (Eds. N. Banthia, P. Tatnall, M. Criswell & K. Folliard), 2003, pp. 203-220.
Bindiganavile, V., Banthia, N and Aarup, B., ‘Impact response of ultra-high strength fiber reinforced cement composite’, ACI Materials Journal, Vol. 99, no. 6, Nov-Dec, 2002, pp. 543-548.
Bindiganavile, V. and Banthia, N., ‘Some studies on the impact response of fiber reinforced concrete’, Journal of the Indian Concrete Institute, Vol. 3, no. 3, Oct-Dec 2002, pp. 23-27.
Nemkumar Banthia and Vivek Bindiganavile, ‘Admixture blends on steel fiber-reinforced dry-mix shotcrete: A comparative study of silica fume and high-reactivity metakaolin’, ACI Concrete International, Vol. 24, no. 8, Aug 2002, pp. 49-53.
Bindiganavile, V. and Banthia, N., ‘Fiber reinforced dry-mix shotcrete with metakaolin’, Cement and Concrete Composites, Vol. 23, No. 6, Elsevier, 2001, pp. 503-514.
Banthia, N. and Bindiganavile, V., ‘Repairing with hybrid-fiber-reinforced concrete’, ACI Concrete International, Vol. 23, No. 6, 2001, pp. 29-32
Bindiganavile, V. and Banthia, N., ‘Polymer and Steel Fiber-Reinforced Cementitious Composites under Impact Loading, Part 1: Bond-Slip Response’, ACI Materials Journal, Vol. 98, No. 1, Jan-Feb 2001, pp. 10-16.
Bindiganavile, V. and Banthia, N., ‘Polymer and Steel Fiber-Reinforced Cementitious Composites under Impact Loading, Part 2: Flexural Toughness’, ACI Materials Journal, Vol. 98, No. 1, Jan-Feb 2001, pp. 17-24.
Bindiganavile, V. and Banthia, N., ‘Rebound in Dry-mix Shotcrete: Influence of Type of Mineral Admixture’, ACI Materials Journal, Vol. 97, No. 2, Mar-Apr 2000, pp. 115-119.
Vivek, B.S., Sairam, R. and Nautiyal, B.D., ‘Silica Fume -An excellent Pozzolana’, Journal of the Indian Concrete Institute, Bulletin no. 59, Apr-Jun 1997, pp. 37-42.
Documents and Reports
A. Mufti, M. Onofrei, E. Rivera, C. Klowak and V. Bindiganavile, ‘Structural health monitoring of field trial beam at Veteran Affairs Brookside Cemetery’, Technical Report, ISIS Canada Research Network, University of Manitoba, November 2004, 28 pages.
V. Bindiganavile and N. Banthia, ‘A study of size effects on the dynamic response of plain concrete’, (to appear in) Proceedings: 3rd Int. Conf. on Construction Materials: Performance, Innovations & Structural Implications (CONMAT-05), Aug. 22-24, 2005.
Nemkumar Banthia and Vivek Bindiganavile, ‘Crack growth resistance of fiber reinforced concrete at high strain-rates’, Proceedings: George C. Hoff Symposium on High-Performance Concrete & Concrete for Marine Environment, (Ed. T. C. Liu), Las Vegas, U.S.A., May 25, 2004, pp. 123-138.
N. Banthia and V. Bindiganavile, ‘Process dependence of fiber reinforced shotcrete’, RILEM Proceedings-36 (Spring Meeting) Advances in Concrete through Science & Engineering, Evanston, IL Mar 21-26, 2004, pp. 31-42.
N. Banthia, V. Bindiganavile and S. Mindess, ‘Impact resistance of fiber reinforced concrete: A Progress Report’, RILEM Proceedings-30: High Performance Fiber Reinforced Concrete-4, Ann Arbor, MI, June 15-19, 2003, pp. 117-131.
Luca Sorelli, Nemkumar Banthia, Vivek Bindiganavile and Giovanni Plizzari, ‘Static and dynamic responses of hybrid fiber reinforced concrete’, Proceedings, International Conference ICACS 2003, Xuzhou, China, (Eds. Y-S Yuan, S.P. Shah & H-L Lü, 17-19 Sept. 2003, Vol. 2, paper #122.
V. Bindiganavile, N. Banthia and B. Aarup, ‘Impact response of an ultra-high strength cement composite’, 2nd Material Speciality Conference, CSCE, Montréal, Quebec, June 5-8, 2002. (abstract in: 2002 Annual Conference, Abstracts, page m-5)
Banthia, N. and Bindiganavile, V. ‘Fiber reinforced cement based composites under drop weight impact loading: Test equipment & material influences’, in ACI SP-206, ACI Symposium, “Concrete: Material Science to Applications” -A tribute to S. P. Shah, Detroit, MI, April 22-23, 2002, pp. 411-428.
Bindiganavile, V. and Banthia, N., ‘Influence of mineral admixtures on properties of fiber reinforced dry-mix shotcrete’, Seventh CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete, Madras, India, July 22-27, ACI SP 199-54, 2001, pp. 531-550.
Bindiganavile, V. and Banthia, N., ‘Machine effect in the drop-weight impact testing of plain concrete beams’, CONSEC-01, Vancouver, Canada, June 18th –20th, Vol. 1, 2001, pp. 589-596.
Banthia, N. and Bindiganavile, V., ‘Polymer and steel fiber reinforced concrete under impact loading’, High Performance Concrete - Workability, Strength and Durability: Proceedings, (Eds. C. K. Y.Leung, Z. Li & J-T Ding), Vol. 1, Hong Kong, Dec 10th-15th, 2000, pp. 365-372.
Bindiganavile, V. and Banthia, N., ‘Rebound reduction in steel fiber reinforced dry-mix shotcrete through matrix modifications’, BEFIB conference RILEM Proceedings-15, Lyon, France, September 12-15, 2000, pp. 149-158.
Banthia, N., Yan, C. and Bindiganavile, V., ‘Development and Application of High Performance Hybrid Fiber Reinforced Concrete’, BEFIB Conference RILEM Proceedings-15, Lyon, France, September 12-15, 2000, pp. 471-480.
Conferences: Presentations (by self or Co-Author)
Nemkumar Banthia and Vivek Bindiganavile, ‘Process dependence of fiber reinforced shotcrete’, Shotcrete for Underground Support X, Whistler, BC, Sept. 12-16, 2006.
Banthia, N., Bindiganavile, V. and Mindess, S., ‘Impact and blast protection with fiber reinforced concrete’, 6th RILEM Conf. on Fiber Reinforced Concrete (BEFIB), Sept. 20-22, 2004.
Sorelli, L., Banthia, N., Bindiganavile, V. and Plizzari, G., ‘Static and dynamic responses of hybrid fiber reinforced concrete’, Int. Conf. Advances in Concrete & Structure, Xuzhou, China, May 25-27, 2004.
V. Bindiganavile and N. Banthia, ‘Impact response of the fiber-matrix bond in concrete’, 3rd Asia-Pacific Conference on Fiber Reinforced Materials, Changsha, China, Nov. 17-18, 2003.
V. Bindiganavile and N. Banthia, ‘Scaling of impact loaded plain concrete beams’, 5th Asia-Pacific Conference on Shock & Impact Loads on Structures, Changsha, China, Nov. 12-14, 2003.
Bindiganavile, V. and Banthia, N., ‘Fiber reinforced concrete for blast and impact load: Lessons learnt’, ACI Spring Convention, Vancouver, B.C., Mar 30-Apr 2, 2003.
Bindiganavile, V. and Banthia, N., ‘Crack growth resistance of fiber reinforced concrete under impact loading’, ACI Spring Convention, Vancouver, B.C., Mar 30-Apr 2, 2003.
L. Sorelli, G.Plizzari, N. Banthia, V. Bindiganavile, ‘Flexural postcracking performance of hybrid fiber reinforced concrete from pullout of single fibers’, XVI National Conference of Italian Group Fracture (IGF), 20-22 June, Catania Italy, (in Italian).
Bindiganavile, V. and Banthia, N., ‘Impact behaviour of polymer and steel fiber reinforced cementitious composites’, ACI Fall Session, Toronto, Canada, October 18-20, 2000.
Banthia, N, Bindiganavile, V. and Chan, C., ‘Shotcrete: Is it just another concrete?’, International Conference on Infrastructure Regeneration and Rehabilitation, Sheffield, U.K., June 28 – July 2, 1999.