Research reports:
1. New
Technology-Based Approach to Advance Higher Volume Fly Ash Concrete with
Acceptable Performance - Guide for the Construction Team - 2008
2. New
Technology-Based Approach to Advance Higher Volume Fly Ash Concrete with
Acceptable Performance - 2008
3.
Crushed Returned Concrete as Aggregates
for New Concrete, Report to the
RMC Research & Education Foundation, September 2007
4. Obla,
K., Kim, H., and Lobo, C., (2007), “Effect
of Continuous (Well-Graded) Combined Aggregate Grading on Concrete
Performance Phase A: Aggregate Voids Content (Packing Density)”, National
Ready Mixed Concrete Association, Silver Spring, MD, May 2007, 29 pp.
5. Obla,
K., Kim, H., and Lobo, C., (2007), “Effect
of Continuous (Well-Graded) Combined Aggregate Grading on Concrete
Performance Phase B: Concrete Performance”, National Ready Mixed Concrete
Association, Silver Spring, MD, May 2007, 42 pp.
6. Obla,
Karthik, and Lobo, Colin, “Experimental Case Study Demonstrating the
Advantages of Performance Specifications”, Report to the RMC Research
Foundation, Project 04-02, January 2006, 34 pgs.
7. Establishing
a Center for Concrete Research, Concrete InFocus -
click here.
Research articles:
1.
Obla, Karthik, “Does Well Graded
Aggregates Aid Concrete Performance?”,
Concrete International (in preparation).
2. Obla,
Karthik, Lobo, Colin, and Kim, Haejin, “Experimental Case Study
Demonstrating Advantages of Performance Specifications”,
NCBC Conference, May 2006.
3. Obla,
Karthik and Lobo, Colin, “Laboratory Demonstration of Advantages of
Performance Specifications”, Indian Concrete Journal, Vol. 17, No. 12,
December 2005, pp. 22-26.
4. Obla,
Karthik, "Experimental Case Study Demonstrating Advantages of Performance
Specifications", Concrete inFocus, Summer 2005, Vol. 4, No. 2, pp. 32-42.
5. Obla,
Karthik, Rodriguez, Fernando, and Ben-Barka, Soliman, "Effects on
Non-Standard Curing on Strength of Concrete - A Research Project at the
NRMCA Research Laboratory", Concrete infocus, Winter 2005, Vol. 3, No. 4,
pp. 57-59.
6. Lobo,
C., and Mullings, G.M., “Recycled Water in Ready Mixed Concrete Operations,"
Concrete inFocus, National Ready Mixed Concrete Association, Spring 2003,
pp. 17-26.
7. Lobo,
C. and Gaynor, R.D., "Reusing Non-Admixtured Returned Concrete," The
Concrete Producer, September 1998, pp. 621 – 623
8. Lobo,
C., “Challenging ASR Predictive Testing”, The Concrete Producer, March 1998.
9. Lobo,
C., Guthrie, W.F., and Kacker, R.,"A Study on the Reuse of Plastic Concrete
Using Extended Set Retarding Admixtures" Journal of Research of the National
Institute of Standards and Technology, September – October 1995, pp 575-589
10. Lobo,
C.L., Mullings, G.M., and Gaynor, R.D., “Effects of Capping Materials and
Procedures on the Measured Compressive Strength of High-Strength Concrete”,
Cement Concrete and Aggregates, ASTM International, Vol. 16, No. 2, Dec
1994, pp. 173-180.
11. Gaynor,
R.D. and Lobo, C., “Current Research at NRMCA,” Concrete Products
magazine, April 1992, pp. 5-7.
Conference
Presentations:
1. Obla,
Karthik, “Well graded Aggregates and Concrete Performance”, Concrete
Technology Forum, Dallas, TX, May 2007.
2. Obla,
Karthik, “Research in Support of Performance Specifications”,
CTF, Dallas, TX, May 2007.
3. Obla,
Karthik, “Optimizing Aggregate Gradation”, Texas Aggregates and Concrete
Association Annual Meeting – Invited Speaker and Panel Discussion, Austin,
TX, March 2007.
4. Obla,
Karthik, “Crushed Returned Concrete as Aggregates for New Concrete”, ACI
Spring Convention, Atlanta, 2007.
5. Obla,
Karthik, “Well graded Aggregates – Does it help?”, ACI Fall Convention,
Denver, 2006 (in Preparation)
6. Obla,
Karthik, “Effect of Continuous Combined Aggregate Grading on Concrete
Performance”, ACI Spring Convention, Charlotte, 2006
7. Obla,
Karthik, “Performance-Based Specifications: Laboratory Study Demonstrating
the Advantages”, Transportation Research
Board, 85th Annual Meeting, Washington DC, January
2006.
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