Unconfined Compressive Strength Test Equipment

In case no pronounced peak is observed take the strength corresponding to 20 strain as the unconfined compressive strength.

Unconfined compressive strength test equipment.

This test can be performed on intact remolded or reconstituted soil specimens using the strain controlled application of axial loads. An undisturbed or remolded soil sample is loaded in an unconfined condition at a strain rate of 0 5 to 2 per minute until failure. Astm d 2166 standard test method for unconfined compressive strength of cohesive soil. Unconfined compressive strength tests of cohesive soils quickly provide valuable information for the design of soil embankments and structures.

Humboldt s unconfined soil testers rimac allow for quick and accurate determination of unconfined compressive strength of cohesive soils in the field or lab. To order please use net30 if available or call 1 800 544 7220. For φ 0 conditions the shear strength or cohesion of the soil may be taken to be equal to half the unconfined compressive strength. In addition in this test method the unconfined compressive strength is taken as the maximum load attained per unit area or the load per unit.

The unconfined compressive strength ucs is the maximum axial compressive stress that a right cylindrical sample of material can withstand under unconfined conditions the confining stress is zero. Unconfirmed compressive strength ucs stands for the maximum axial compressive stress that a specimen can bear under zero confining stress. The undrained shear strength su of clays is commonly determined from an unconfined compression test. For soils the undrained shear strength su is necessary for the determination of the bearing capacity of foundations dams etc.

Where p is the compressive force. Plot σ 1 versus ε and obtain the maximum stress which gives the unconfined compressive strength q u. And the suitability of the equipment and facilities used. Unconfined compressive strength ucs is a quick and simple test to determine the undrained shear strength of cohesive soils.

According to the astm standard the unconfined compressive strength q u is defined as the compressive stress at which an unconfined cylindrical specimen of soil will fail in a simple compression test. D2166 d2166m 16 standard test method for unconfined compressive strength of cohesive soil. The unconfined compression test is a laboratory test used to derive the unconfirmed compressive strength ucs of a rock specimen. It is also known as the uniaxial compressive strength of a material because the application of compressive stress is only along one axis the.

The unconfined compressive strength ucs is the maximum axial compressive stress that a right cylindrical sample of soil can withstand under unconfined conditions.