Q1/ Find the weights of the materials needed to prepare the concrete cubes to perform the compression test at age of 7 days and 28 days, then find the compressive strength if the forces applied to the cube are 15 * 15 * 15 cm as show in the table below? Note: The density of concrete (2400 kg/m3), the percentage of additional concrete is 10% use concrete mix 1:1.5:3? lab applied cude weight concrete compressive strength Required compressive Code load(KN) (kg) density (Мa) strength (Mpa) 7 а-2-1 550 8.25 days а-2-2 538 8.11 21 а-2-3 563 7.99 28 a-2-4 804 8.3 days а-2-5 925 8 30 а-2-6 717 8.22

Q1/ Find the weights of the materials needed to prepare the concrete cubes to perform the compression test at age of 7 days and 28 days, then find the compressive strength if the forces applied to the cube are 15 * 15 * 15 cm as show in the table below? Note: The density of concrete (2400 kg/m3), the percentage of additional concrete is 10% use concrete mix 1:1.5:3? lab applied cude weight concrete compressive strength Required compressive Code load(KN) (kg) density (Мa) strength (Mpa) 7 а-2-1 550 8.25 days а-2-2 538 8.11 21 а-2-3 563 7.99 28 a-2-4 804 8.3 days а-2-5 925 8 30 а-2-6 717 8.22

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

I need the answer as soon as possible
The bond strength for M20 concrete as per IS 456: 2000 is 1.2 N/mm2. For reinforcing steel of grade Fe 360, the development length in terms of bar diameter (o) is
A simply supported concrete rectangular beam has a cross-sectional dimension of 200mm x 300mm and length L=(3 + 21/5)m, is to be analyze in flexure, unit weight of the beam is 24kN/m^3. Concrete properties: f'c=28MPA, normal weight concrete, Es=200000MPA
Q4- The following information is obtained from the strength test carried on concrete cubes of shown sizes casted using potable and questionable water. Is it recommended to use this questionable water for columns and beams concrete mix? Show the calculations and justify your answer. S. Potable water Questionable water Load, kN Load, kN Cube side, No. Cube side, cm cm (Load +10x16) (Load +7x16) 1 955 15.20 777 15.37 2. 933 15.72 743 14.06 936 16.05 744 14.54 966 15.91 752 15.60 947 15.77 733 14.29 6 944 16.04 745 15.59
Need some help with this question
1. For the concrete beam shown, calculate the maximum tensile force (P) that can be applied to the beam before failure. The fracture toughness of concrete is 0.23 MPa(m)0.5, its elastic modulus is 25000 MPa, and the maximum flaw size (middle flaw) is estimated as 4mm inside concrete. Assume fgeom = 1, SF=1, and yield/tensile strength to be 3MPa. 2. A material possesses a fracture toughness of 48 MPa?m?. Determine the critical size (length) of the crack if is subjected to a critical far field stress of 1460 MPa. Assume infinite geometry and include a drawing. 5cm 15cm 50cm
A concrete mix consists of 5 gallons of water for each bag of cement. What is the expected compressive strength of this mix based on the compressive strength curve shown here? Given information: Weight of US standard cement bag = 94 lbs Water weight = 8.34 pounds per gallon COMPRESSIVE STRENGTH psi 6000 5000 4000 3000 2000 0.3 0.4 6000 psi 5000 psi 4000 psi 3000 psi NORMAL CONCRETE 0.5 0.6 W/C RATIO 0.7 MPa 42 35 28 21 14 0.8
What is the effect of water–cement ratio on the permeability of hardened concrete? How does permeability affect the durability of the concrete structure?Using Figure 7.33, what is the approximate percent increase in the coefficientof permeability if the water–cement ratio increases from 0.5 to 0.6? Using thesame figure, what is the approximate percent increase in the coefficient ofpermeability if the water–cement ratio increases from 0.5 to 0.7?
Q-The strength of a fully matured concrete sample is 500 kg/cm². When cured at an average temperature of 20°C in day, 10°C in night, datum temperature To is -11°C. If Plowman constants A is 32 and B is 54, find the strength of identical concrete at 7 days.
A civil engineer wants to design a concrete mix design with the following criteria: Design a concrete strength: 25 MPa with a slump of 90 mm. Ignore the need for exposure Select a non-air entrained concrete Fine aggregates properties: Fineness modulus 2.67; Bulk specific gravity 2.66 Coarse aggregates properties: Maximum size aggregate of 25 mm with the bulk specific gravity 2.55 and dry-rodded mass 2000 kg/m3. Based on the criteria above 2.1. Calculate the required strength. 2.2. Calculate the water cement ratio. 2.3. Calculate the mix proportions of all materials including cement, water, fine aggregates, coarse aggregates, and air content for 1 m3.
Give 5 importance of specific gravity of aggregates in concrete mix. Explain each.
Three concrete cubes of 150 mm side length have been tested in compression at the age of 28 days. The loads recorded were 500, 550, and 520 KN respectively. Using this data: Required Magnitude of strength(MPa) 1)Calculate the average of strength of the tested cubes 2)Give an estimate of the 7 days strength of the concrete tested 3) Give an estimate of the 28 days strength of cylinder made of same concrete 4)Give an estimate of the 28 days splitting tensile strength of the same concrete 5yGive an estimate of the 28 days flexural strength of the same concrete