Presentation on using industrial waste water in making of plain concrete @ intell by raghavendra
Improving ‘waste reduction’ and ‘recycling techniques’ is currently being advocated worldwide. For transforming our words into action, finding a remedy became imperative. Our intentions drifted our attention towards efficiency of water treatment, dissipation of wealth for partially recovering its potability and conserving the precious water resource for sustainable development. With the world advancing in concrete technology and growing scarcity of usable water, we are compelled to start with replacing the use of potable water in construction by ‘industrial waste water’. The feasibility of using industrial effluents as mixing water and the effect of its constituents on cement mortar properties were experimentally evaluated. Cement mortar specimens were cast using crude waste water and deionised water for comparison. This paper examines the effect of industrial waste water (from electroplating industry) on cement mortar properties like setting time, density and compressive strength. Using fairly conservative assumptions regarding the life of concrete prepared using water tainted with metallic ions, the rate of chemical deterioration and with a greater emphasis on cost effectiveness, it can be shown that this breakthrough most likely achieves overall positive social benefits.
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Presentation on using industrial waste water in making of plain concrete @ intell by raghavendra
- 1. A Paper Presentation EFFCECT OF METAL IONS IN WASTE WATER ON CEMENT MORATAR PROPERTIES R.RAGHAVENDRA K.SHIVA III B.Tech, Civil yours.raghu113@gmail.com III B.Tech, Civil shiva.kuncharapu@gmail.com FROM J.N.T.U College of Engg., Anantapur. For INTELL TECHNOLECT 2K11
- 2. INTRODUCTION RESEARCH SIGNIFICANCE MATERIALS METHODS RESULTS AND DISCUSSIONS CONCLUSION REFERENCES
- 4. IS 456 -2000 S.No. 1 Parameters Permissible limits >6 2 pH Chlorides as Cl- < 200mg/L 3 (for normal concrete work) Chlorides as Cl- < 500mg/L 4 (for reinforced concrete work) Phenolphthalein alkalinity < 50mg/L 5 Total alkalinity < 250mg/L 6 Total fixed (inorganic) solids < 3000mg/L 7 Total volatile (organic) solids < 200mg/L 8 Sulphate as SO42- < 400mg/L 9 Permissible Suspended matter limits prescribed by ACI, ASTM IS < 2000mg/L 456-2000
- 5. Tay and Yip Ramana Reddy Cebeci and Saatci
- 7. CEMENT Ordinary portland cement S.No. Properties Results 1. Specific Gravity 3.1 2. Fineness 220m2/kg 3. Initial Setting Time 112 minutes 4. Final Setting Time 190 minutes 5. Soundness 0.5mm 6. Compressive Strength (in N/mm2) 3 days 23.5 7 days 34.2 28 days 44.5 90 days 46.5 Physical properties of
- 8. S.No. Oxide composition Percentage 1. CaO 65.49 2. SiO2 21.67 3. Al2O3 5.97 4. Fe2O3 3.85 5. SO3 1.66 6. MgO 0.78 7. K2 O 0.46 8. Na2O 0.12 Chemical composition of cement
- 9. SAND Particle size a/c to the BIS specifications washed with deionised water Oven dried for 24 hours at 100±10ºC cooled to a room temperature of 27±2ºC. Sl.No. Properties Results 1. Specific Gravity 2.63 2. Bulk Density (Oven dry) 15.54 KN/m3 3. Water Absorption 1.2% 4. Fineness Modulus before sieving 2.72 5. Particle size variation 0.15 to 2.0mm 6. Loss of weight with Conc. HCl 0.124% Properties of sand
- 10. WATER Deionised water (DW) Treated wastewater (TW) Impurity DW Standard TW pH 7.3 6-9 7.7 TSS --- 100 1600 TDS 15 --- 1884 --- 10 Alkalinity 10 Acidity 2.0 --- 0 Hardness 2.5 --- 2.8 Sulphates 0.2 --- 8.2 Chlorides 3.0 1.0 10 Nitrogen --- 50 15 Characteristics of water (All values in mg/L, except pH)
- 11. Methods 1) Test for Setting time 27 ± 2 Relative Humidity 2) Test for Density 3) Test for Compressive strength Temp 90 %
- 12. RESULTS AND DISCUSSIONS a) SETTING TIME (30min) Setting time (minutes) Effect of M ixing W ater on Setting Time 350 300 250 200 INITIAL 150 FINAL 100 50 0 DW TW Type of mixing water Effect of different types of mixing water on setting time of concrete
- 13. RESULTS AND DISCUSSIONS b) DENSITY DENSITY VARIATION FOR DAY 7 2650 DENSITY OBTAINED 2600 2550 2500 SW TW 2450 2400 2350 2300 1 2 NUMBER OF SAMPLES TESTED 3
- 14. RESULTS AND DISCUSSIONS b) DENSITY VARIATION OF DENSITY ON DAY 90 VARIATION OF DENSITY ON DAY 28 2560 2600 2550 2580 2560 SW TW 2530 2520 DENSITY DENSITY 2540 SW 2540 TW 2520 2500 2510 2480 2500 2460 SAMPLES SAMPLES
- 15. RESULTS AND DISCUSSIONS c) COMPRESSIVE STRENGTH (25%)
- 16. To conclude, the type of mixing water did not affect the density of the cement mortar cubes. However, it did affect the initial and final setting time. When treated industrial wastewater was used as the mixing water, the setting times had significantly retarded. Long-term development of compressive strength was not affected.
- 17. REFERENCES * USE OF MUNICIPAL WASTEWATER FOR PLAIN CEMENT CONCRETE CONSTRUCTIONS Electronic Journal of Environmental, Agricultural and Food Chemistry * EFFECT OF METAL IONS IN INDUSTRIAL WASTEWATER ON CEMENT SETTING, STRENGTH DEVELOPMENT AND HARDENING The Indian Concrete Journal * INDUSTRIAL EFFLUENTS ORIGIN CHARACTERISTICS , EFFECTS , ANALYSIS AND TREATMENT Manivasagam.N, Sakthi Publications, Coimbatore