Soru 12 45 puan Yant Kaydet Q.12. In a concrete plant a concrete of C35/45 is going to be prepared by using the aggregates given in the table below. The water/cement ratio should not exceed 0.50 for durability purpose. The density of the cement is found as 3.15 kg/dm?. Passing, % 2 4 8 16 31.5 Sieve sizes (mm) 0.25 0.50 1 100 Density (kg/dm3) 2.67 2.72 2.73 Sand 9 30 80 15 0 45 2 0 100 72 62 2 0 100 100 28 1 1 100 Crushed stone 1 Crushed stone 2 2 100 0 0 a- The sand mixing proportion is proposed as 32%. Find the crushed stone 1 and crushed stone 2 mixing proportions such that the mixture grading remains between the A32-B32 reference curves. (Take the fineness modulus of reference curve as 4.84 between A32 and B32 curves) (5 P) b- The air content is estimated as 2% and the standard deviation (o) of this class concrete is assumed as 4.1 N/mm, calculate the theoretical mixing contents of this concrete. For calculating the aimed strength of the concrete "t" can be taken as 1.48. (15 P) C- This concrete was prepared by using the theoretical contents of the ingredients and the unit weight of the fresh concrete was obtained as 2360 kg/m3 during the experiment. Find the true contents of this concrete and calculate the air content (15 P) Windows' Etkinlestir d- According to the results of the compression test performed on 15/30 cm (d/h) cylindrical specimens at 28th day, the failure loads were found as P1=612 kN, P2= 634 kN and P3= 659 kN. Check the conformity of the concrete grade. If it does not meet the aimed strength, which parameters should be changed for redesign of concrete mixture? (10 P) ^ TUR 15:06 10.06.2020 zin TZ Q.12. 45 puan Yant Kaydet In a concrete plant a concrete of C35/45 is going to be prepared by using the aggregates given in the table below. The water/cement ratio should not exceed 0.50 for durability purpose. The density of the cement is found as 3.15 kg/dm3 Sieve sizes (mm) Sand Crushed stone 1 Crushed stone 2 0.50 30 0.25 9 1 0 1 43 2 0 Passing. % 4 62 SO 13 0 8 100 72 2 16 100 100 28 31.5 100 100 100 Density (kg/dm3 2.67 2.72 273 O a The sand mixing proportion is proposed as 32%. Find the crushed stone 1 and crushed stone 2 mixing proportions such that the mixture grading remains between the A32-B32 reference curves. (Take the fineness modulus of reference curve as 4.84 between A32 and B32 curves) (5 P) b. The air content is estimated as 29 and the standard deviation (6) of this class concrete is assumed as 4.1 Nmm, calculate the theoretical mixing contents of this concrete For calculating the aimed strength of the concrete "e" can be taken as 1 48 (15 P) This concrete was prepared by using the theoretical contents of the ingredients and the unit weight of the fresh concrete was obtained as 2360 kg m during the experiment Find the true contents of this concrete and calculate the air content (15 p) d. According to the results of the compression test performed on 15 30 cm ( h) cylindrical specimens at 25th day the failure loads were found as P1-612 EN, P.- 634 IN and P3- 659 EN Check the conformity of the concrete grade. If it does not meet the aimed strength, which parameters should be changed for redesign of concrete mixture? (10 P) Additional information: fc = KB wth -0, KB30 Nam) W=33(10-ky) (w Water content ky Finetes modulus of aggregate mixture) fc,aim=fck+to Dosya Ekle persona Goat TUR 15.04 10.06.2020 uraya yazn BI msi C- This concrete was prepared by using the theoretical contents of the ingredients and the unit weight of the fresh concrete was obtained as 2360 kg/m3 during the experiment. Find the true contents of this concrete and calculate the air content (15 P) d- According to the results of the compression test performed on 15/30 cm (d/h) cylindrical specimens at 28th day, the failure loads were found as P1=612 kN, P2= 634 kN and P3= 659 kN. Check the conformity of the concrete grade. If it does not meet the aimed strength, which parameters should be changed for redesign of concrete mixture? (10 P) Additional information: fc = KBM 0,5 (KB=30 N/mm2) W=33(10-kk) (W: Water content, kk-Fineness modulus of aggregate mixture) fc,aim=fck+t. o Dosya Ekle Bilgisayanma Gozat ierik Koleksiyonu'na Gozat Windows Etkinlestir Soru 12/21 Baka bir soruya geerseniz bu yant kaydedilir. Alle TUR 15.07 10.06.2020 wa yazn Soru 12 45 puan Yant Kaydet Q.12. In a concrete plant a concrete of C35/45 is going to be prepared by using the aggregates given in the table below. The water/cement ratio should not exceed 0.50 for durability purpose. The density of the cement is found as 3.15 kg/dm?. Passing, % 2 4 8 16 31.5 Sieve sizes (mm) 0.25 0.50 1 100 Density (kg/dm3) 2.67 2.72 2.73 Sand 9 30 80 15 0 45 2 0 100 72 62 2 0 100 100 28 1 1 100 Crushed stone 1 Crushed stone 2 2 100 0 0 a- The sand mixing proportion is proposed as 32%. Find the crushed stone 1 and crushed stone 2 mixing proportions such that the mixture grading remains between the A32-B32 reference curves. (Take the fineness modulus of reference curve as 4.84 between A32 and B32 curves) (5 P) b- The air content is estimated as 2% and the standard deviation (o) of this class concrete is assumed as 4.1 N/mm, calculate the theoretical mixing contents of this concrete. For calculating the aimed strength of the concrete "t" can be taken as 1.48. (15 P) C- This concrete was prepared by using the theoretical contents of the ingredients and the unit weight of the fresh concrete was obtained as 2360 kg/m3 during the experiment. Find the true contents of this concrete and calculate the air content (15 P) Windows' Etkinlestir d- According to the results of the compression test performed on 15/30 cm (d/h) cylindrical specimens at 28th day, the failure loads were found as P1=612 kN, P2= 634 kN and P3= 659 kN. Check the conformity of the concrete grade. If it does not meet the aimed strength, which parameters should be changed for redesign of concrete mixture? (10 P) ^ TUR 15:06 10.06.2020 zin TZ Q.12. 45 puan Yant Kaydet In a concrete plant a concrete of C35/45 is going to be prepared by using the aggregates given in the table below. The water/cement ratio should not exceed 0.50 for durability purpose. The density of the cement is found as 3.15 kg/dm3 Sieve sizes (mm) Sand Crushed stone 1 Crushed stone 2 0.50 30 0.25 9 1 0 1 43 2 0 Passing. % 4 62 SO 13 0 8 100 72 2 16 100 100 28 31.5 100 100 100 Density (kg/dm3 2.67 2.72 273 O a The sand mixing proportion is proposed as 32%. Find the crushed stone 1 and crushed stone 2 mixing proportions such that the mixture grading remains between the A32-B32 reference curves. (Take the fineness modulus of reference curve as 4.84 between A32 and B32 curves) (5 P) b. The air content is estimated as 29 and the standard deviation (6) of this class concrete is assumed as 4.1 Nmm, calculate the theoretical mixing contents of this concrete For calculating the aimed strength of the concrete "e" can be taken as 1 48 (15 P) This concrete was prepared by using the theoretical contents of the ingredients and the unit weight of the fresh concrete was obtained as 2360 kg m during the experiment Find the true contents of this concrete and calculate the air content (15 p) d. According to the results of the compression test performed on 15 30 cm ( h) cylindrical specimens at 25th day the failure loads were found as P1-612 EN, P.- 634 IN and P3- 659 EN Check the conformity of the concrete grade. If it does not meet the aimed strength, which parameters should be changed for redesign of concrete mixture? (10 P) Additional information: fc = KB wth -0, KB30 Nam) W=33(10-ky) (w Water content ky Finetes modulus of aggregate mixture) fc,aim=fck+to Dosya Ekle persona Goat TUR 15.04 10.06.2020 uraya yazn BI msi C- This concrete was prepared by using the theoretical contents of the ingredients and the unit weight of the fresh concrete was obtained as 2360 kg/m3 during the experiment. Find the true contents of this concrete and calculate the air content (15 P) d- According to the results of the compression test performed on 15/30 cm (d/h) cylindrical specimens at 28th day, the failure loads were found as P1=612 kN, P2= 634 kN and P3= 659 kN. Check the conformity of the concrete grade. If it does not meet the aimed strength, which parameters should be changed for redesign of concrete mixture? (10 P) Additional information: fc = KBM 0,5 (KB=30 N/mm2) W=33(10-kk) (W: Water content, kk-Fineness modulus of aggregate mixture) fc,aim=fck+t. o Dosya Ekle Bilgisayanma Gozat ierik Koleksiyonu'na Gozat Windows Etkinlestir Soru 12/21 Baka bir soruya geerseniz bu yant kaydedilir. Alle TUR 15.07 10.06.2020 wa yazn