Presentation (karim) -so.pptx seminar msc

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1. M.SC. Thesis Seminar Presented by Karim hesham sadat Under Supervision of Prof. Dr. Mohamed Ismail Serag Dr. Muhammad S. El- Feky

2. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment

3. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment 1.Introduction 2.LITERATURE REVIEW 3.EXPERIMENTAL PROGRAM 4.RESULTS AND DISCUSSION 5.CONCLUSIONS 6.RECOMMENDATIONS

4. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment Introduction

5. 1.INTRODUCTION

6. 1.INTRODUCTION ( NANO TECHNOLOGY ) Recently , NANOTECHNOLOGY has attracted considerable scientific interest due to the NEW POTENTIAL uses of particles in nanometer scale ( less than 100 nm ). CONCRETE : is a micro material influenced with its nano properties.

7. 1.INTRODUCTION ( NANO TECHNOLOGY ) Benefits of Nano clay

8. 1.INTRODUCTION Objectives Studying the effect of nano clay on properties of concrete subjected to aggressive environment . scope of the work percentages of Nano Clay ( 0 , 4 , 6 and 8%). Using different solutions( seawater, acidic and sulphate ) after curing 28 days submerged in water . perform compressive strength test as a long time after 28, 60 and 90 days.

9. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment Literature review

10. 2- LITERATURE REVIEW The effect of nano clay concrete on properties in aggressive environment Yinfang fan (2015) Explores the effect of calcined nano -kaolinite clay (NKC) on cement mortar, when exposed to an acidic environment. Ordinary Portland cement was partially substituted with KNC in rations of 0%, 1% , 3% ,and 5% by weight. The cubes were cured in water for 28 days then submerged in the acidic solution for 20 , 40 ,and 60 days . The optimum dosage of NKC appears to be less than 3% by weight.

11. 2-Literature Review Hasan Sahan Arel (2017) Investigated the effect of micro silica, nano silica, fly ash, metakaolin on durability and mechanical properties of mortars exposed to sulfate attack . the result founded that the optimum percentage of N.S was 4%, M.S was 5%, MK was 15%, fly ash was 30 %. AhmetBenli (2017 ) investigated the mechanical properties of self-compacting mortars containing silica fume (SF) and fly ash (FA ) immersed in seawater and 10% magnesium sulfate solution . The percentage of fly ash were 10%, 20%, and 30% replacing by weight of Portland cement and 6%, 9%, 12% and 15% by weight of silica fume (SF) were prepared . The optimum percentage was FA 10% has the best resistance in seawater.

12. 2-Literature Review saloma (2015) Investigate the comparison between the development of compressive strength of concrete with nano silica and that without nano silica and determinate the resistance of the nanomaterial concrete to sulfate attack of concrete. The percentage of nano silica that mixed with cement was 10% of the cement weight . results of concrete compressive strength at 28 days gave a maximum compressive strength.

13. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment Experimental program

14. 3 .EXPERIMENTAL PROGRAM PLAN OF WORK A total of 144 specimens were casted in order to achieve the required objectives. Nano Clay Fresh Properties 0% 4% 8% 6% Hardened Properties Water Curing attack solution Mechanical Micro Structure Workability Statistical analysis

15. 3 .EXPERIMENTAL PROGRAM Experimental program Characterization of Used Materials Mixing Sequence Fresh Concrete Tests Hardened Concrete Tests Micro structure Analysis Statistical Analysis

16. 3 .EXPERIMENTAL PROGRAM CHARACTERIZATION OF USED MATERIALS Ordinary Portland Cement Element SiO 2 Al 2 O 3 Fe 2 O 3 CaO MgO SO 3 Na 2 O K 2 O L.O.I Cement 20.13 5.32 3.61 61.63 2.39 2.87 0.37 0.13 1.96 Property Result Compressive strength (3-days) 156.6 kg/cm 2 Compressive strength (7-days) 195.7 kg/cm 2 Nano Clay Element SiO 2 Fe 2 O 3 Al 2 O 3 MgO CaO Na 2 O TiO2 L.O.I NC 99.17 0.06 0.13 0.22 0.16 0.71 1.61 13.12

17. 3 .EXPERIMENTAL PROGRAM CHARACTERIZATION OF USED MATERIALS Mixed aggregate Attack solutions Sea water ( suez canal) HCL solution with concentration 0.05 litter/1litter water. Sulphate solution with concentration 9 gm/1litter water.

18. 3.EXPERIMENTAL PROGRAM MIXING SEQUENCE 1.sonication 2.mixing 2 min. dry (cement + aggregate) 1.5 min. (water+ N.C.) 1.5 min. (water+ S.P.) 5 mins for (4%,6% & 8%) Bath Sonicator Concrete mixer

19. 3.EXPERIMENTAL PROGRAM Mixing Design Mixtures components (Kg) per 1 m3 MIX(A) CEMENT AGGREGATE WATER S.P. N.C. COARSE   FINE MIX 0 450 1088 586 202.5 2.7 MIX 1 432 1088 586 202.5 2.7 18 MIX 2 423 1088 586 202.5 2.7 27 MIX 3 414 1088 586 202.5 2.7 36

20. 3.EXPERIMENTAL PROGRAM Concrete Fresh Properties Workability Stage 1 stage 2 Slump Test

21. 3.EXPERIMENTAL PROGRAM Concrete Hardened Properties Compressive Strength A total of 144 cubes (100*100*100 mm3) were prepared to perform compressive strength test after 28 days as per ASTM C 39. Each mix consisted of 36 cubes; first all cubes were cured 28 days in water then 27 cubes were in attack solution (seawater, HCL and sulphate ) . All cubes performed compressive strength test after 28, 60 and 90 days.

22. 3.EXPERIMENTAL PROGRAM MICRO STRUCTUE ANALYSIS QUANTA FEG 250 scanning electron microscope used for analysis.

23. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment reSULTS & DISCUSSION

24. 4.RESULTS AND DISCUSSION Fresh Concrete Properties Workability Slump of all mixes

25. 4 .RESULTS AND DISCUSSION Fresh Concrete Properties BEHAVIOR of NANO Clay CONCRETE in the FRESH STATE Agglomeration of N ano C lay and its filling effect in concrete Nano-clay agglomerate Nano- Clay agglomerate Nano- Clay agglomerate Kong, D.; Su, Y.; Du, X.; Yang, Y.; Wei, S. and Shah, S.P., 2013, ''Influence of Nano-Silica Agglomeration on Fresh Properties of Cement Pastes''. Construction and Building Materials 43 (2013) (557–562).

26. 4.RESULTS AND DISCUSSION micRo structure analysis micro structure of control mix

27. 4.RESULTS AND DISCUSSION micRo structure analysis micro structure of nano clay mix

28. 4.Results and Discussion Hard C oncrete P roperties water

29. 4.Results and Discussion Hard C oncrete P roperties Sea water

30. 4.Results and Discussion Hard C oncrete P roperties HCL Solution

31. 4.Results and Discussion Hard C oncrete P roperties Sulphate Solution

32. 4.Results and Discussion Statistical Analysis ( JMP Program)

33. 4.RESULTS AND DISCUSSION Code N.C% Time -1 4 28 6 60 1 8 90 Define the response surface design code

34. Statistical analysis outcomes Prediction expression for compressive strength (in seawater)  

35. Statistical analysis outcomes Actual and predicted values of compressive strength Pattern N.C% time comp.strength Predicted comp.strength −− -1 -1 44.8 41.11309524 −+ -1 1 32.9 35.99642857 +− 1 -1 31.2 28.59642857 ++ 1 1 21.4 25.5797619 a0 -1 32 32.59047619 A0 1 22.7 21.12380952 0a -1 35.2 41.49047619 0A 1 44.7 37.42380952 33 33.49285714 33 33.49285714

36. Statistical analysis outcomes Compressive Response strength Whole Model Actual by Predicted Plot

37. Statistical analysis outcomes Contour Plot for Predicted compressive strength

38. Statistical analysis outcomes

39. Statistical analysis outcomes Prediction expression for compressive strength (in HCL solution)  

40. Statistical analysis outcomes Actual and predicted values of compressive strength Pattern N.C% time comp.strength Predicted comp.strength −− -1 -1 39.9 38.38452 −+ -1 1 35.5 35.76786 +− 1 -1 28 27.66786 ++ 1 1 24.1 25.55119 a0 -1 31 32.24762 A0 1 22.9 21.78095 0a -1 33.8 35.64762 0A 1 35 33.28095 29.7 29.63571 29.7 29.63571

41. Statistical analysis outcomes Compressive Response strength Whole Model Actual by Predicted Plot

42. Statistical analysis outcomes Contour Plot for Predicted compressive strength

43. Statistical analysis outcomes

44. Statistical analysis outcomes Prediction expression for compressive strength ( in sulphate solution)  

45. Statistical analysis outcomes Actual and predicted values of compressive strength Pattern N.C% time comp.strength Predicted comp.strength −− -1 -1 50 51.34405 −+ -1 1 44.3 45.36071 +− 1 -1 31.1 32.96071 ++ 1 1 30.9 32.47738 a0 -1 45.2 42.79524 A0 1 30.6 27.1619 0a -1 43.6 40.39524 0A 1 39.8 37.1619 30.3 33.22143 30.3 33.22143

46. Statistical analysis outcomes Compressive Response strength Whole Model Actual by Predicted Plot

47. Statistical analysis outcomes Contour Plot for Predicted compressive strength

48. Statistical analysis outcomes

49. Statistical analysis outcomes Prediction expression for compressive strength (in water)  

50. Statistical analysis outcomes

51. Statistical analysis outcomes Pattern N.C% time Actual comp.strength Predicted comp.strength −− -1 -1 50.5 50.46666667 −+ -1 1 53 53.06666667 +− 1 -1 33.5 33.43333333 ++ 1 1 35.2 35.23333333 a0 -1 52 51.96666667 A0 1 34.5 34.53333333 0a -1 47.8 47.9 0A 1 50.2 50.1 49.2 49.2 49.2 49.2 Actual and predicted values of compressive strength

52. Statistical analysis outcomes Contour Plot for Predicted compressive strength

53. Statistical analysis outcomes

54. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment Conclusions

55. 5-Conclusion Fresh Concrete P roperties Workability Increasing Nano clay Percentage , decreasing the workability of the concrete. The Workability decreases (14,24,76)% using (4,6,8)% Nano clay respectively. Superplasiticizer percentage should be increased with the increase of Nano clay percentage .

56. 5-Conclusion Mechanical Concrete P roperties Compressive Strength (0,4,6,8)% Nano Clay 1 - water The Addition of Nano clay Increased the compressive strength of concrete . The gain in compressive strength with 4% N.C was ( 34% ). The gain in compressive strength with 6% N.C was ( 27% ). The losses in compressive strength with 8% N.C was ( 11% ). The optimum value was 4 % N.C at 90 days .

57. 5-Conclusion Mechanical Concrete P roperties Compressive Strength (0,4,6,8)% Nano Clay 2- Sea water The gain in compressive strength with 4% N.C was (33% , 15% and 33%)after (28 , 60 and 90 )days ,respectively. The gain in compressive strength with 6% N.C was ( 5 % , 4 % and 66%) after (28 , 60 and 90 )days ,respectively . The losses in compressive strength with 8% N.C was (7% , 29% and 21%) after (28 , 60 and 90 )days ,respectively . The optimum percentage was 6% N.C at 90 days . The gain of the compressive strength in sea water after 90days with 6% N.C was 13% compared with 0% N.C curing in water after 90 days .

58. 5-Conclusion Mechanical Concrete P roperties Compressive Strength (0,4,6,8)% Nano Clay 3 - HCL solution The gain in compressive strength with 4% N.C was (37% , 24% and 60%)after (28 , 60 and 90 )days ,respectively. The gain in compressive strength with 6% N.C was (16% , 19% and 58%) after (28 , 60 and 90 )days ,respectively . The losses in compressive strength with 8% N.C was (4% , 8% and -9%) after (28 , 60 and 90 )days ,respectively . The optimum values was 4 % N.C at 28 days . The losses of the compressive strength in HCL solution after 90days with ( 4% & 6%) N.C was 10% only compared with 0% N.C curing in water after 90 days . The losses of the compressive strength in HCL solution after 90days with 0% N.C was 44% compared with 0% N.C curing in water after 90 days .

59. 5-Conclusion Mechanical Concrete P roperties Compressive Strength (0,4,6,8)% Nano Clay 4- Sulphate solution The gain in compressive strength with 4% N.C was (48% , 37% and 49%)after (28 , 60 and 90 )days ,respectively. The gain in compressive strength with 6% N.C was (29% , 22% and 34%) after (28 , 60 and 90 )days ,respectively . The losses in compressive strength with 8% N.C was (8% , 7 % and -4%) after (28 , 60 and 90 )days ,respectively . The optimum values was 4 % N.C at 28 days . The gain of the compressive strength in sulphate solution after 90days with ( 4%) N.C was 12% compared without N.C curing in water after 90 days . The compressive strength in sulphate solution with 6 % N.C after 90 days was equal compressive strength without N.C curing in water after 90 days .

60. The Effect of Nano Clay on Properties of Concrete Subjected to Aggressive Environment Recommendations

61. 6-Recommendations The Effect of Nano Clay on Properties of reinforced Concrete Subjected to Aggressive Environment . Study the effect of different percentages of superplasticizer on Nano clay behavior in concrete exposed to Aggressive Environment . Study the effect of Nano clay on properties of concrete exposed to Aggressive Environment after long time more than three months Using composite nano materials to study the properties of concrete such as nano clay with nano silica Using another attack solution to study the properties of concrete such as sulfuric acid .

62. Thank You