ECONOMIC VIABILITY AND COMPRESSIVE STRENGTH OF ROLLER COMPACTED CONCRETE PAVEMENT (RCCP)

Carmel  B. Sabado-Burlat,

ECONOMIC VIABILITY AND COMPRESSIVE STRENGTH OF ROLLER COMPACTED CONCRETE PAVEMENT (RCCP)

Abstract:

The pavement industry is one of the areas where sustainability must be practiced. Roller Compacted Concrete (RCC), a zero-slump concrete, is a new engineering material here in the Philippines having the same basic ingredients as conventional concrete but of different mix proportions. It is constructed without forms and reinforcement. Fresh RCC mix is dry enough to support a roller while being compacted and wet enough to accommodate complete hydration of cementitious materials. The foremost objective of this study is to determine the compressive strength of RCC slab when compacted by a 68-kg soil compactor. Soil Compaction Analogy Method (ASTM D-1557) was used in determining the maximum dry density (MDD) and optimum moisture content (OPC). A compaction pattern is observed with 5 passes of the compactor in each direction. Three (3) RCC slabs (0.91 x.70 x.15 m) were constructed, and water cured for 3 days, 14 days, and 28 days respectively. Properties of crushed ¾” aggregates, rounded ½” aggregates, natural sand, and cementitious materials (Portland Type 1 and Fly ash) were all tested prior to using it in the experiment. A total of 18 core samples were extracted from the 3 slabs, six for each slab. The cores were then tested for compressive strength determination following ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. Initial results showed that the strength attained by RCC is 32% higher than the designed strength developed by DPWH for the 3-day maturity and 47% higher for the 14-day maturity time. It is recommended that the observation of the maturity of concrete be extensive and to be observed for a longer period of time to evaluate further its characteristics and behavior. Lastly, an in-depth study of the economic viability of RCC pavement as a substitute to Portland cement concrete pavement and a comparison in terms of cement content, construction time, and production unit cost must be conducted.

References:

ACI Committee 214, (2003). “Guide for Obtaining Cores and Interpreting Compressive Strength Results”, ACI 214.4R-03, American Concrete Institute, Farmington Hills, MI, USA, 16 pp.
Adaska, W. (2006). Roller-compacted concrete (RCC). Portland Cement Association Research $Development Information, 2975 (51), 595-604.
American Concrete Institute. (2002). Guide for selecting proportions for no-slump concete (ACI 211.3R-02). Michigan, USA. Retrieved from http://www.icie.ir/files/filebox/211.3r_02.pdf
ASTM C-127-01, (2001). Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate. ASTM International. West Conshohocken, PA, DOI: 10.1520/C0127-01.Retrieved from www.astm.org.
ASTM C-128-01, (2001). Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate. ASTM International. West Conshohocken, PA, DOI: 10.1520/C0128-01.Retrieved from www.astm.org.
ASTM C-136-01, (2001). Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. ASTM International. West Conshohocken, PA, DOI: 10.1520/C0136- 01.Retrieved from www.astm.org.
ASTM C39/C39M-03. (2003). Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. ASTM International. West Conshohocken, PA, DOI: 10.1520/ C0039_C0039M-03.Retrieved from www.astm.org.
ASTM C42/C 42M Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete. ASTM International. West Conshohocken, PA, DOI: 10.1520/ C0039_C0039M-03.Retrieved from www.astm.org
ASTM D-1557 – 12. (2012). Standard test methods for laboratory compaction characteristics of soil using modified effort. ASTM International. West Conshohocken, PA, DOI: 10.1520/D1557-12.Retrieved from www.astm.org.
Atis, Cengiz Duran, Strength properties of high-volume fly ash roller compacted and workable concrete, and influence of curing condition. Cement and Concrete Research .35 (2005) 1112– 1121
Dam, T.V., Taylor, P., Fick, G., Gress, D., VanGeem, M., Lorenz, E. ( 2012), Sustainable concrete pavements: A manual of practice. Final Report/ Manual. National Concrete Pavement
Technology Center, Iowa State University, Retrieved Jan. 2, 2013, from http://www.nrmca.org/sustainability/Sustainable%20Concrete%20Pavement.pdf
Harrington, D., Abdo, F., Adaska, W., & Hazaree, C. (2010). Guide for roller-compacted concrete pavements. Institute for Transportation, Iowa State University Portland Cement
Association, Retrieved Jan. 3, 2013, from http://members.cement.org/EBiz55/ProductCatalog/Product.aspx?ID=1626
Philippines Department of Public Works and Highways. (2014). Quality control manual on concrete and steel bridge structures 2nd edition. Retrieved from http://www.dpwh.gov.ph/jica/pdf/Quality%20Control%20Manual%20on%20Concrete%20and%20Steel%20Bridge%20Structuers_2nd%20Edition.pdf http://www.dpwh.gov.ph/jica/pdf/Quality%20Control%20Manual%20on%20Concrete%20and%20Steel%20Bridge%20Structuers_2nd%20Edition.pdf.
Sarsam, S., Al-Rawi, A., Abdul Rahim, A. (2012). Laboratory investigation on roller compaction technique in concrete construction. Journal of Engineering v18 (4). Retrived September 16, 2013 from http://www.coeng.uobaghdad.edu.iq/uploads/Juornal/2012/April/Laboratory%20Investigation%20on%20Roller%20Compaction%20Technique%20in.pdf