Durability Analysis Testing on Reactive Powder Concrete

Abstract:

Reactive powder concrete (RPC) has been proposed as barrier materials for the construction of engineered barrier in Taiwan. The durability characteristics of RPC in such applications become paramount for the success of the containment of the wastes. The adverse environmental conditions at the disposal site could attack concrete barrier and results in degradation of the material.Laboratory tests will be conducted on RPC with various compositions to investigate the durability test of RPC. These include chloride ion ingress, and sulfate attack of RPC. In this study, the resistance of concrete to sulfate attack was tested by submerging RPC specimens in Na₂SO₄ solution. Based on the volume change data for a period of1 year, the RPC with higher water to binder ratio (W/B) exhibited lower resistance to sulfate attack. The electrochemical technique is applied to accelerate chloride-ion migration test for RPC. The RPCs chloride migration coefficient is significantly decreased by the use of pozzolanic material, compared with ordinary concrete.

• Periodical: Advanced Materials Research (Volume 811)
• Pages: 244-248
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.811.244
• Online since: September 2013
• Authors: Mei Ling Chuang, Wei Hsing Huang
• Keywords: Barrier Material, Durability, Reactive Powder Concrete

References

[1] Richard, P. andCheyrezy, M.H., Reactive powder concretes with high ductility and 200-800 MPa compressive strength, ACI SP, Vol. 144, pp.507-518, (1994).

DOI: 10.14359/4536

[2] Papadakis, V. G., Effect of supplementary cementing materials on concrete resistance against carbonation and chloride ingress, Cement and Concrete Research, Vol. 30, No. 2, pp.291-299, (2000).

DOI: 10.1016/s0008-8846(99)00249-5

[3] Stanish, K. D., hooton, R. D., Thomas, M. D. A., Testing the chloride penetration resistance of concrete: a literature review, FHWA Report, Toronto, Ontario, Canada, pp.1-33, (1997).

[4] Standard test method for electrical indication of concrete's ability to resist chloride ion penetration, ASTM C 1202-97, ASTM, USA, (1994).

DOI: 10.1520/jte12075j

[5] Hooton, R. D., What is need in a permeability test for evaluation of concrete quality, pore structure and permeability of cementitious material, Materials research society symposium proceeding, Boston, USA, pp.1459-1475, (1987).

[6] Andrade, C., Calculation of chloride diffusion coefficients in concrete from ionic migration measurement, Cement and Concrete Research, Vol. 23, pp.724-742, (1993).

DOI: 10.1016/0008-8846(93)90023-3

[7] Yang, C. C., Cho, S. W., Chi, Jack M., and Huang, R., An electrochemical method for accelerated chloride migration test in cement-based materials, Materials Chemistry and Physics, Vol. 77, pp.461-469, (2002).

DOI: 10.1016/s0254-0584(02)00102-5