Slant shear test is widely accepted for evaluating the bond

Assignment Help Physics

Reference no: EM13543471

The slant shear test is widely accepted for evaluating the bond of resinous repair materials to concrete; it utilizes cylinder specimens made of two identical halves bonded at 30°. For 12 specimens prepared using wire-brushing, the sample mean shear strength (N/mm2) and sample standard deviation were 19.06 and 1.74, respectively, whereas for 12 hand-chiseled specimens, the corresponding values were 24.6 and 3.96. Does the true average strength appear to be different for the two methods of surface preparation? Test the relevant hypotheses using a significance level of .05. (Give ? to exact integer and t to 2 decimal places.)

a.) ? = ?

b.) t (?wire - ?hand) = ?

Reference no: EM13543471

Questions Cloud

The elevator is moving downward at constant speed : For each of the following situations, evaluate whether the relationship between the given force is less than, greater than, equal to, or can't tell and explain why that would be the case. The elevator is moving downward at constant speed.

Find the magnitude of impulse that bat imparts to the ball : A 146 gram baseball is hit toward the left by a bat. The magnitude of the force the bat exerts on the ball as a function of time is shown in the figure below (Figure 1) .

Determine the waves amplitude-waves frequency : Determine the wave's amplitude. Determine the wave's wavelength. Determine the wave's frequency. Determine the wave's speed of propagation. Determine the wave's direction of propagation.

Calculate and interpret an upper confidence bound : Data on the modulus of elasticity obtained 1 minute after loading in a certain configuration and 4 weeks after loading for the same lumber specimens is presented here.

Slant shear test is widely accepted for evaluating the bond : The slant shear test is widely accepted for evaluating the bond of resinous repair materials to concrete; it utilizes cylinder specimens made of two identical halves bonded at 30°.

Carpal tunnel syndrome problem : Quantitative noninvasive techniques are needed for routinely assessing symptoms of peripheral neuropathies, such as carpal tunnel syndrome (CTS). An article reported on a test that involved sensing a tiny gap in an otherwise smooth surface by prob..

Find the velocity of each block after they have moved apart : Blocks A (mass 6.50kg ) and B (mass 15.00kg ) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 10.0m/s . The blocks are equipped with ideal spring bumpers. The collision is head-on, so al..

Find the velocity of first glider after the collision : On an air track, a 398.0 g} glider moving to the right at 2.05 m/s} collides elastically with a 501.5 g} glider moving in the opposite direction at 3.20 m/ s} .

Find the final kinetic energy of first glider : A 0.300 kg} glider is moving to the right on a frictionless, horizontal air track with a speed of 0.900 m/s} when it makes a head-on collision with a stationary 0.150kg} glider. Find the final kinetic energy of first glider.

User Account

All Pages