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 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 atRebound Numbers:42 4138O a. 38 MPaO b. 36 MPaO c. 40 MPaO d. 456 kgf/cm²O e. 36 kgf/cm²391637443840433840

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

Answered: ncrete in terms of cube strength. (Use…

Engineering

Civil Engineering

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

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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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 41 38 O a. 38 MPa Ob. 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
Using Figure 4, a cross-section of a concrete beam, answer the questions that follow.5.1. Calculate the moment of inertia about the X-axis and the Y-axis 5.2 Calculate the combined bending and direct stress at points A, B and C. All loading is assumed to compressive. revision paper 2020
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: 38 42 41 O a. 38 MPa O b. 36 MPa O c. 456 kgf/cm² O d. 36 kgf/cm² O e. 40 MPa 39 16 37 44 38 40 43 38 40
A concrete test cylinder having length L=12 in and diameter d=6 in is subjected to axial compressive forces P in a testing machine. If the maximum shear stress in the concrete is not to exceed 2,000 psi, what is the safe value for the axial load p?A. 452,389 lb. B. 113,100 lb. C. 904,778 lb. D. 56,550 lb. The answer for this is letter B 113,100 lb but I dont know its solution. Please give me complete solution in order to get the 113,100 lb.
Two 150 mm * 300 mm concrete cylinders with randomly oriented steelfiber contents of 0 and 2% by weight, respectively. After curing for 28 days,the specimens were subjected to increments of compressive loads until failure. The load versus deformation results were as shown in Table P7.45. Assuming that the gauge length is the whole specimen height, determine the following:a. The compressive stresses and strains for each specimen at each loadincrement.b. Plot stresses versus strains for the two specimens on one graph.c. The initial modulus of elasticity for each specimen.d. The ultimate strength for each specimen.e. The strain at failure for each specimen.f. Toughness. Curves may be approximated with a series of straight lines.g. Comment on the effect of adding fiber on the following:i. Modulus of elasticityii. Ultimate strengthiii. Ductilityiv. Toughness
what would be the average compressive strength of concrete if the load at failure of the 3 trials are 55,100 kg 54,800 kg and 55,200 kg. Diameter of the sample is 6" a. 31.1 MPa b. 30.6 MPa c. 31.6 MPa d. 30.1 MPa
In the computation of deflection, For all light weight concrete, the modification factor À is a. 0.80 b.0.75 c.0.90 d.0.85
QI- A concrete cylindrical specimen 155 mm in diameter and 290 mm long is subjected to compressive loading up to failure. The following data shown in table below are obtained. Draw the stress- strain curve and determine: i) the concrete strength. ii) Initial Tangent Modulus. iii) Modulus of Elasticity. Iv) Secant Modulus at 90% of strength and v) State which type of stress strain behavior is this. Load, kN Deformation, mm×10* (Load - 8x16) (Deformation x 0.5x16) 222.5 103 413.1 206 635.2 324 730.4 378 856.1 432 953.6 486 1080.7 540 1171.2 756 1270.0 1025 1396.3 1395
Problem 1: A square concrete column with dimensions 22 x 22 in. is reinforced with a total of eight No. 10 bars arranged uniformly around the column perimeter. Material stress-strain are given by curves a and c in Fig 1. Calculate the percentages of total load carried by the concrete and the steel as load is gradually increased from 0 to failure, which is assumed to occur when the concrete strain reaches a limit value of 0.0030. Determine the load at strain increments of 0.0005 up to the failure strain, and graph your results, plotting load percentage vs. strain. (Source: Design of Concrete Structures 16th ed., McGraw-Hill, 2021) (Hint: use strain compatibility) fs, ksi 60- 50 40 30 20 10 OL fc, ksi 6 5 T 4 3 2 1 0 0.001 Es or Ec Fig. 1 b a Steel b Concrete, fast loading c Concrete, slow loading d Elastic concrete 0.002 0.003
Q2- A cylindrical concrete specimens 150 mm in diam. and 300mm high each were tested in split tensile test, the following results were observed, determine the tensile strength of concrete and estimate the compressive strength. S.N 1 3 4 7 Load, kN 267.3 269.4 260.5 255.4 287.2 291.4 282.5 (Load+5x18
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 www.dys.mu.edu.tr) Rebound Numbers: 38 42 41 O a. 38 MPa O b. 36 MPa O c. O d. O e. 40 MPa 456 kgf/cm² 36 kgf/cm² 39 16 37 44 38 40 43 38 40
Problem 2: If f = 3 ksi what is the modulus of elasticity Ec and the maximum tensile stress fr that the concrete can carry before cracking (use ACI recommended equations). Assume a unit weight of the plain concrete is: a. Wc = 90- b. w lb lb 118- ft39 ft3) C. W = 160- Problem 3: Wight 3-6 Rugblom 4: Wight ? 7 lb ft3