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.Rebound Numbers:42 4138O a. 38 MPaOb. 36 MPaO c.40 MPaO d. 456 kgf/cm²O e. 36 kgf/cm²39 1637443840433840 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 = ZYLINDERDRUCKFESTIGKEITfc' = RESISTANCE A LA COMPRESSION SUR LE CYLINDRE CAGE DU BETON 14 A 56 JOURSfc' = CYLINDER COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 36 DAYS)fc' =(BETONALTER 14 BIS 56 TAGE)ZYLINDERDRUCKFESTIGKEITBETON 14 A SG JOURS)14 BIS 56 TAGDCBETONALTERCURE CAGE DUIRm = CUBE COMPRESSION STRENGTH CAGE OF CONCRETE 14 TO 56 DAYS)RM = RESISTANCE A LA COMPRESSION SUR CUBE CAGE DUWURFELDRUCKFESTIGKEITRMCLASSIC CONCRETE HAMMER GRAPHICS60504030205 N/mm²108500800070006000500040003000مي402000150070605040302010202020AApos.pos.Apos.2530354045B = HAMMER REBOUND / DURETE A CHOC / PRELLHARTEpos. Bpos. Apos. Cpos. B.B25303540B = HAMMER REBOUND / DURETE A CHOCpos.pos.English-ВB25303540B = HAMMER REBOUND / DURETE A CHOCUSE-10-45504550PRELLHARTE50PRELLHARTE556125094085530620422/510255CECE714612509408306kg/cm²204102CE14 BIS 56 TAGERm = 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(BETONALTERRm 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/mm²N/mm²706050403020101560504030201015BROCKS MODEL GRAPHICSXPos.XBpos. A2030354045B = HAMMER REBOUND / DURETE A CHOC / PRELLHARTE112=pos. Cpos. B20pos. A25pos.English25B30354540HAMMER REBOUND / DURETE A CHOC / PRELLHARTEUSE714- 11 -61251040830620410250Kg/cm²CE8702725258024351290150psi1450We have executed a lot of tests with the hammeron a series of cubic specimens.The very same cubic specimens have also beentested by using a compression machine.The curves on the diagrams are the result of thecomparison between the two groups of values.The specimens employed for the tests have beenmade using concrete formed by: sand, gravel andPortland cement, ageing from 14 and 56 days.Specimens made with different materials (whichare not the ones traditionally used for the con-CE

as per IS:8900, Clause 5.1.1(TESTS FOR TWO OR MORE OUTLIERS , AT LEAST ONE OUTLIER AT EACH END, 16…

Answered: In order to estimate in-situ compress…

Engineering

Civil Engineering

In order to estimate in-situ compress Estimate the compressive strength of

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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