The point load test has often been reported as an indirect measure of compressive strength.
It has been used widely in practice due to easy testing, the simplicity of specimen …

Use of the geological strength index (GSI) rock mass classification system and the
associated m, s and a parameter relationships linking GSI with the Hoek–Brown failure …

Stone construction elements are frequently in moist environments or in direct contact with
water. Design and test standards have traditionally ignored the water impact on rock …

Within a well-established stress environment and with well-established laboratory
properties, Hawkesbury Sandstone in the Sydney region of Australia hosts, and will continue …

The preparation of standardized soft rock specimens to perform unconfined compressive
strength (UCS) tests is typically difficult, expensive and time-consuming. Needle penetration …

A downhole hydraulic jetting assembly is provided herein. The assembly is useful for
steerably jetting multiple lateral boreholes into a subsurface formation from an existing …

Intact rock is typically described according to its uniaxial compressive strength (UCS). The
UCS is needed in the design of geotechnical engineering problems including stability of …

A method of forming a lateral borehole in a pay zone located within an earth subsurface is
provided. The method includes determining a depth of a pay zone in the earth subsurface …

Aggregate degradation (AD) is one of the major reasons accounting for failure of aggregate
materials, and the mechanical degradation of aggregate materials can be determined by …

The present paper investigates the effect of fracturing degree on P-and S-wave velocities in
rock. The deformation of intact brittle rocks under loading conditions is characterized by a …