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ncrete in terms of cube strength. (Use the related charts provided at

ncrete in terms of cube strength. (Use the related charts provided at

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Rm CYLINDER COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 56 DAYS) Rm = RESISTANCE A LA COMPRESSION SUR LE CYLINDRE CAGE DU BETON 14 A 56 JOURS) (BETONAL TER 14 BIS 56 TAGE) Rm = ZYLINDERDRUCKFESTIGKEIT fc' = RESISTANCE A LA COMPRESSION SUR LE CYLINDRE CAGE DU BETON 14 A 56 JOURS fc' = CYLINDER COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 36 DAYS) fc' = (BETONALTER 14 BIS 56 TAGE) ZYLINDERDRUCKFESTIGKEIT BETON 14 A SG JOURS) 14 BIS 56 TAGD CBETONALTER CURE CAGE DUI Rm = CUBE COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 56 DAYS) RM = RESISTANCE A LA COMPRESSION SUR CUBE CAGE DU WURFELDRUCKFESTIGKEIT RM CLASSIC CONCRETE HAMMER GRAPHICS 60 50 40 30 20 5 N/mm² 10 8500 8000 7000 6000 5000 4000 3000 مي 40 2000 1500 70 60 50 40 30 20 10 20 20 20 A A pos. pos. A pos. 25 30 35 40 45 B = HAMMER REBOUND / DURETE A CHOC / PRELLHARTE pos. B pos. A pos. C pos. B. B 25 30 35 40 B = HAMMER REBOUND / DURETE A CHOC pos. pos. English -В B 25 30 35 40 B = HAMMER REBOUND / DURETE A CHOC USE -10- 45 50 45 50 PRELLHARTE 50 PRELLHARTE 55 612 509 408 55 306 204 22/5 102 55 CE CE 714 612 509 408 306 kg/cm² 204 102 CE 14 BIS 56 TAGE Rm = CUBE COMPRESSION STRENGTH (AGE OF CONCRETE 14 TO 56 DAYS) Rm = RESISTANCE A LA COMPRESSION SUR CUBE (AGE DU BETON 14 A 56 JOURS) Rm = WURFELDRUCKFESTIGKEIT (BETONALTER Rm RESISTANCE A LA COMPRESSION SUR LE CYLINDRE (AGE DU BETON 14 A 56 JOURS) Rm CYLINDER COMPRESSION STRENGTH (AGE OF CONCRETE 14 TO 56 DAYS) Rm ZYLINDERDRUCKFESTIGKEIT (BETONALTER 14 BIS 56 TAGE) N/mm² N/mm² 70 60 50 40 30 20 10 15 60 50 40 30 20 10 15 B ROCKS MODEL GRAPHICS XPos.X B pos. A 20 30 35 40 45 B = HAMMER REBOUND / DURETE A CHOC / PRELLHARTE 112 = pos. C pos. B 20 pos. A 25 pos. English 25 B 30 35 45 40 HAMMER REBOUND / DURETE A CHOC / PRELLHARTE USE 714 - 11 - 612 510 408 306 204 102 50 Kg/cm² CE 8702 7252 5802 4351 2901 50 psi 1450 We have executed a lot of tests with the hammer on a series of cubic specimens. The very same cubic specimens have also been tested by using a compression machine. The curves on the diagrams are the result of the comparison between the two groups of values. The specimens employed for the tests have been made using concrete formed by: sand, gravel and Portland cement, ageing from 14 and 56 days. Specimens made with different materials (which are not the ones traditionally used for the con- CE
Transcribed Image Text:Rm CYLINDER COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 56 DAYS) Rm = RESISTANCE A LA COMPRESSION SUR LE CYLINDRE CAGE DU BETON 14 A 56 JOURS) (BETONAL TER 14 BIS 56 TAGE) Rm = ZYLINDERDRUCKFESTIGKEIT fc' = RESISTANCE A LA COMPRESSION SUR LE CYLINDRE CAGE DU BETON 14 A 56 JOURS fc' = CYLINDER COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 36 DAYS) fc' = (BETONALTER 14 BIS 56 TAGE) ZYLINDERDRUCKFESTIGKEIT BETON 14 A SG JOURS) 14 BIS 56 TAGD CBETONALTER CURE CAGE DUI Rm = CUBE COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 56 DAYS) RM = RESISTANCE A LA COMPRESSION SUR CUBE CAGE DU WURFELDRUCKFESTIGKEIT RM CLASSIC CONCRETE HAMMER GRAPHICS 60 50 40 30 20 5 N/mm² 10 8500 8000 7000 6000 5000 4000 3000 مي 40 2000 1500 70 60 50 40 30 20 10 20 20 20 A A pos. pos. A pos. 25 30 35 40 45 B = HAMMER REBOUND / DURETE A CHOC / PRELLHARTE pos. B pos. A pos. C pos. B. B 25 30 35 40 B = HAMMER REBOUND / DURETE A CHOC pos. pos. English -В B 25 30 35 40 B = HAMMER REBOUND / DURETE A CHOC USE -10- 45 50 45 50 PRELLHARTE 50 PRELLHARTE 55 612 509 408 55 306 204 22/5 102 55 CE CE 714 612 509 408 306 kg/cm² 204 102 CE 14 BIS 56 TAGE Rm = CUBE COMPRESSION STRENGTH (AGE OF CONCRETE 14 TO 56 DAYS) Rm = RESISTANCE A LA COMPRESSION SUR CUBE (AGE DU BETON 14 A 56 JOURS) Rm = WURFELDRUCKFESTIGKEIT (BETONALTER Rm RESISTANCE A LA COMPRESSION SUR LE CYLINDRE (AGE DU BETON 14 A 56 JOURS) Rm CYLINDER COMPRESSION STRENGTH (AGE OF CONCRETE 14 TO 56 DAYS) Rm ZYLINDERDRUCKFESTIGKEIT (BETONALTER 14 BIS 56 TAGE) N/mm² N/mm² 70 60 50 40 30 20 10 15 60 50 40 30 20 10 15 B ROCKS MODEL GRAPHICS XPos.X B pos. A 20 30 35 40 45 B = HAMMER REBOUND / DURETE A CHOC / PRELLHARTE 112 = pos. C pos. B 20 pos. A 25 pos. English 25 B 30 35 45 40 HAMMER REBOUND / DURETE A CHOC / PRELLHARTE USE 714 - 11 - 612 510 408 306 204 102 50 Kg/cm² CE 8702 7252 5802 4351 2901 50 psi 1450 We have executed a lot of tests with the hammer on a series of cubic specimens. The very same cubic specimens have also been tested by using a compression machine. The curves on the diagrams are the result of the comparison between the two groups of values. The specimens employed for the tests have been made using concrete formed by: sand, gravel and Portland cement, ageing from 14 and 56 days. Specimens made with different materials (which are not the ones traditionally used for the con- CE
In order to estimate in-situ compressive strength, Rebound Hammer test is applied on a concrete shear wall. The following twelve Rebound numbers are measured. Estimate the compressive strength of the concrete in terms of cube strength. (Use the related charts provided at Rebound Numbers: 42 41 38 O a. 38 MPa O b. 36 MPa O c. 40 MPa O d. 456 kgf/cm² O e. 36 kgf/cm² 39 16 37 44 38 40 43 38 40
Transcribed Image Text:In order to estimate in-situ compressive strength, Rebound Hammer test is applied on a concrete shear wall. The following twelve Rebound numbers are measured. Estimate the compressive strength of the concrete in terms of cube strength. (Use the related charts provided at Rebound Numbers: 42 41 38 O a. 38 MPa O b. 36 MPa O c. 40 MPa O d. 456 kgf/cm² O e. 36 kgf/cm² 39 16 37 44 38 40 43 38 40
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