Concept explainers
Three 6 in. × 12 in. concrete cylinders with randomly oriented steel fiber contents of 0, 2, and 3% 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 P11.15.
Assuming that the gauge length is the whole specimen height, determine the following:
a. The compressive stresses and strains for each specimen at each load increment.
b. Plot stresses versus strains for all specimens on one graph.
c. The 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 effects of increasing the fiber content on the following:
i. Modulus of elasticity
ii. Ultimate strength
iii. Ductility
iv. Toughness
Learn your wayIncludes step-by-step video
Chapter 11 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Additional Engineering Textbook Solutions
Foundation Design: Principles and Practices (3rd Edition)
Electrical Engineering: Principles & Applications (7th Edition)
C Programming Language
Database Concepts (7th Edition)
Problem Solving with C++ (10th Edition)
Starting Out with C++: Early Objects (9th Edition)
- A 150mm x 300mm long cylindrical concrete specimen was tested for tensile strength. The sample failed when the applied force is 150,000N. What is the splitting tensile strength in MPa?arrow_forwardQI- 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 1395arrow_forwardA hot rolled steel tension test sample has a diameter of 6 mm and the original gage length of 30 mm. In a test to fracture, the stress and strain data below were obtained. Determine Generic Strain Value, %0.2 offset strain, and Calculated stress at %0.2 offset. Original diameter - 6mm Original Length - 30 mm Fracture diameter - 4.54 mmarrow_forward
- A cylindrical concrete specimen was tested for compressive strength. The stress at failure was 22.64 MPa when the applied force was 400,000N. What is the diameter of the specimen in mm? Round off your answer to the nearest whole number.arrow_forwardA cylindrical brass specimen having a diameter of 1.10 cm and initial gage length of 4.04 cm is subjected to tensile strength test. The load-deformation values are given in the below table. The final length and final diameter of the specimen were measured as 4.33 cm and 0.92 cm, respectively. Complete the below table and plot true stress-true strain diagram and determine. Yield strength at 0.2 % off-set method. Poisson’s ratio of the material at 135 kN load (assume that there is no volume change) If the material were unloaded from 175 kN, what would be its final length? 1 nm=1*10-9 m, 1 0A=10-10 marrow_forwardWhen a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500x10^-6 is recorded. If this load is allowed to stand for a long time, the strain increases to 1000 x 10^-6. In accordance with provisions of IS: 456-2000,considering the long-term effects, the effective modulus of elasticity of the concrete (in MPa) isarrow_forward
- Help me with thisarrow_forwardWhich strain and stress profiles shown in the figure below best represent a reinforced concrete section subjected to flexure at the ultimate limit state?arrow_forwardA 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.arrow_forward
- Three 150 mm * 300 mm concrete cylinders with water to cement ratios of 0.4, 0.6, and 0.8, 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 .Assuming that the gauge length is the whole specimen height, it is required to do the following:a. The compressive stresses and strains for each specimen at each load increment.b. Plot stresses versus strains for all specimens on one graph.c. The ultimate strength for each specimen.d. The modulus of elasticity as the secant modulus at 40% of the ultimate stress for each specimen. e. The strain at failure for each specimen.f. The toughness for each specimen. g. Comment on the effect of increasing the water–cement ratio on the following:i. Ultimate strengthii. Modulus of elasticityiii. Ductilityiv. Toughness. Curves may be approximated with a series of straight lines.arrow_forwardThere are 3 factors that may be the cause of the production error in the reinforced concrete element shown in the figure.arrow_forwardPlease provide all necessary information, explanation, and solutions. Thank you!arrow_forward
- Structural Analysis (10th Edition)Civil EngineeringISBN:9780134610672Author:Russell C. HibbelerPublisher:PEARSONPrinciples of Foundation Engineering (MindTap Cou...Civil EngineeringISBN:9781337705028Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
- Fundamentals of Structural AnalysisCivil EngineeringISBN:9780073398006Author:Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel LanningPublisher:McGraw-Hill EducationTraffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning