Physical and Mechanical Properties of High Performance Concrete with Alum Sludge as Partial Cement Replacement
DOI:
https://doi.org/10.11113/jt.v65.2198Keywords:
Alum sludge, high-performance concrete, workability, dry density, compressive strength, splitting tensile strength, flexural strengthAbstract
Alum sludge (AS) is a by-product of water treatment plants that use aluminum salts as a primary coagulant, and is the most widely generated water treatment residual/sludge worldwide. It usually contains colloidal alum hydroxides that are often amorphous species. The present paper examines the influence of AS powder as partial Portland cement type I replacement on the mechanical properties of high-performance concrete (HPC). AS with 90% fineness was passed through a 45 µm sieve (No. 325).The present study used a concrete mix with a fixed water/binder ratio of 0.33 and a constant total binder content of 483 kg/m3.The percentages of the alum sludge by weight of cement were: 0%, 6%, 9%, 12%, and 15%. Slump tests were performed on fresh concrete to measure workability. The mechanical properties, dry densities, compressive strengths, and splitting tensile strengths of the concrete samples were investigated at 3, 7, and 28 days, whereas flexural strength was monitored at the age 28 days. Specimens without AS were compared with those that contained AS. The results revealed that the workability of the concrete consistently increased as the amount of cement replaced with AS increased. It was found that the concrete with 6% AS cement replacement demonstrated improved compressive strength and splitting tensile strength at all ages, compared with the control concrete.
References
Aitcin, P. C. and Neville, A. M. 1993. High-Performance Concrete Demystified. Concrete International. 15: 21–26.
ASTM C 150-92. 1992. Standard Specification for Portland Cement. Annual Book of ASTM Standard. Vol. 04.02. Philadelphia: America society for Testing and Materials.
ASTM C618-03. 2003. Standard Specifications for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Usei Concrete. West Conshohocken (PA): ASTM International.
ASTM C 192/C 192M-02. 2002. Standard Practice for Making and Curing Concrete Test Specimens in the Laboratory. West Conshohocken (PA): ASTM International.
ASTM C 143/C 143M-03. 2003. Standard Test Method for Slump of Hydraulic-Cement Concrete. West Conshohocken (PA): ASTM International.
ASTM C 496/C 496M-04. 2004. Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens. West Conshohocken (PA): ASTM International.
ASTM C 293 – 02. 2002. Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Centre-Point Loading. ASTM International, West Conshohocken.
Bourgeois, J. C., Walsh, M. E. and Gagnon, G. A. 2004. Treatment of Drinking Water Residuals: Comparing Sedimentation and Dissolved Air Flotation Performance with Optimal Cation Ratios. Water Research. 38: 1173–82.
BS 1881: Part 116. 1983. Testing Concrete: Method for Determination of Compressive Strength of Concrete Cubes. British Standard Institution (BSI).
Forster, W. and Stephen. 1995. High-Performance Concrete Stretching the Paradigm. Concrete International.16: 33–34.
Fytianos, K., Voudrias, E. and Raikos, N. 1998. Modeling of Phosphorus Removal from Aqueous and Wastewater Samples Using Ferric Iron. Environmental Pollution. 101: 123–30.
Guan, X. H., Chen, G. H. and Shang, C. 2005. Re-use of water Treatment Works Sludge to Enhance Particulate Pollutant Removal From Sewage. Water Research. 39: 3433–40.
Haque, M. N. and Kayali, O. 1998. Properties of High-Strength Concrete Using a Fine Fly Ash. Cement and Concrete Research. 28(10): 1445–52.
Joshi, R. C. and Lothia, R. P. 1997. Fly Ash in concrete – production, Properties and Uses. Advances in Concrete Technology. 2. Gordon and Breach Science Publishers. 269.
Shannag, M. J. 2000. High Strength Concrete Containing Natural Pozzolan and Silica Fume. Cement and Concrete Composition. 22: 399–406.
Sotero-Santos, R. B., Rocha, O. and Povinelli, J. 2007. Toxicity of Ferric Chloride Sludge to Aquatic Organisms. Chemosphere. 68: 628–36.
Tay, J. H. 1987. Sludge Ash As Filler for Portland Cement Concrete. Journal of Environmental Engineering. ASCE. 113(2): 345–35.
Tay, J. H. and Show, K. Y. 1992. Utilization of Municipal Wastewater Sludge as Building and Construction Materials. Resources, Conservation and Recycling. 6(3): 191–204.
Tay, J. H. and Show, K. Y. 1993. Manufacture of Cement From Sewage Sludge. Journal of Materials in Civil Engineering. AXE. 5(1): 19–29.
Twort, A., Rathayaka, D. and Brandt, M. 2005. Water Supply. Fifth Editor. IWA Publishing ISBN O 340 72018 2.
Zhongwei, W. 1998. Green High-Performance Concrete. The Trend of Concrete. China Concrete and Cement Products. 3–6.
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