Grout to Rock Bond Stress
Grout to Rock Bond Stress
(OP)
There are several publications that list average bond stresses between grout and rock for differing types of rock, but none of the information I have at my disposal(FWHA & PTI) correlates grout compressive strength of grout to bond stress.
Intuitively, it seems like there must be a minimum grout compressive strength needed to be able to achieve the ultimate grout to rock bond stresses, but I cannot find any information as to what that may be.
PTI recommends a minimum grout strength of 3,000 psi for all grout, so it may be reasonable to assume that ultimate bond stresses can be achieved if the grout is at least 3,000 psi. But at what point does the compressive strength of grout begin to negatively impact grout to rock bond stresses?
Intuitively, it seems like there must be a minimum grout compressive strength needed to be able to achieve the ultimate grout to rock bond stresses, but I cannot find any information as to what that may be.
PTI recommends a minimum grout strength of 3,000 psi for all grout, so it may be reasonable to assume that ultimate bond stresses can be achieved if the grout is at least 3,000 psi. But at what point does the compressive strength of grout begin to negatively impact grout to rock bond stresses?





RE: Grout to Rock Bond Stress
www.PeirceEngineering.com
RE: Grout to Rock Bond Stress
The answer to the question is easy for soil, as long as the grout is harder than the soil you should be able to achieve your ultimate bond stress for soil. But in rock, the grout may never get as hard as the surrounding rock...
RE: Grout to Rock Bond Stress
RE: Grout to Rock Bond Stress
RE: Grout to Rock Bond Stress
www.PeirceEngineering.com
RE: Grout to Rock Bond Stress
RE: Grout to Rock Bond Stress