A normal-weight concrete specimen tested at 28 days yielded the following results: (a) A 6 in. (diameter) x 12 in. (height) concrete cylinder failed at an axial compressive force of 105,000 Ibf. How much is the ultimate compressive strength? (b) A 6 in. square unreinforced beam section failed at a force of 5400 lbf on a 21 in. span length. A third-point loading test was used, and the fracture occurred within the middle third. How much is modulus of rupture? (c) What is the ratio of the modulus of rupture in (b) to the compressive strength in (a)? (d) Use the compressive strength in (a) to calculate the approximate value of the modulus of rupture per ACI318-19. What is the ratio of your result here to the value in (b)? What conclusion can you make here?

Q: 2. In a ready-mix concrete plant, cylindrical samples are prepared and tested periodically to detect…

A:

Q: Three 100*200 mm cylindrical concrete specimens were tested for 28 days compressive strength and…

A: Solution: Given: Three Compress strengths of same concrete sample: C1=25.5MPa C2=28.6Mpa C3=24.8MPa…

Q: The maximum applied load on cylindrical diameter 150 mm and length 300 mm a concrete specimen of…

A: Given: The diameter is 150 mm. The length is 300 mm. The applied load is 157 kN.

Q: (4) Three concrete specimens with the size of 200x200x200mm³ were prepared for compressive test.…

A:

Q: 10 %) of concrete samples have compressive strength less than (30 mn/m2) and (20%) have strength…

A: Given:- 10 % concrete samples compressive strength<30 MN/m2 20 % concrete samples compressive…

Q: Problem 5: A beam is 250 mm in width, 500 mm in total height and 3.5 meters in length. This beam was…

A: Given data width of beam= 250mm Height = 500mm Length= 3500 mm compressive strength= 32MPa we have…

Q: The square cross section of a reinforced concrete tie is 8 in. x 8 in., and it is reinforced with 8…

A: Here is the calculation of the area of steel and gross area:

Q: The center-point loading flexure strength test was performed on a concrete beam having a cross…

A: To determine the flexure strength of concrete from the center-point flexure strength test.   Give,…

Q: To evaluate the effect of a certain admixture on the flexure strength of concrete, two mixes were…

A: a) The formula of modulus of rupture of the beam is given by,

Q: The maximum applied load cylindrical diameter 150 mm and length 300 mm on a concrete specimen of…

A: Given data: Diameter = 150 mm Length = 300 mm Maximum load applied =  157 kN = 157×103 N

Q: On the 28th day after concrete was mixed, a 6.00-in-diameter concrete cylinder failed in a…

A: Given data,Diameter of cylinder d = 6 inCompressive load P = 145000 lbFactor of safety  = 5

Properties of materials

A property of a material describes its characteristics and distinguishes it from the others. The material properties are described it in terms of its hardness, color, appearances, and so on. The material properties generally depend on the type of material, or whether it is a metal or an alloy. There are different kinds of material properties such as mechanical properties, thermal properties, physical properties, and chemical properties. Chemical properties describe the material in terms of a chemical change. The mechanical properties come into existence when the material is acted upon by an external load. Thermal properties are associated with the temperature of the material and specific heat.