干旱区生态环境知识资源中心(Arid): Creep in Topopah Spring Member welded tuff. Yucca Mountain Site Characterization Project

Arid

DOI	10.2172/82462
报告编号	SAND--94-2585
来源ID	OSTI_ID: 82462
	Creep in Topopah Spring Member welded tuff. Yucca Mountain Site Characterization Project
	Martin, R.J. III; Boyd, P.J.; Noel, J.S. [New England Research, Inc., White River Junction, VT (United States)]; Price, R.H. [Sandia National Labs., Albuquerque, NM (United States)]
英文摘要	A laboratory investigation has been carried out to determine the effects of elevated temperature and stress on the creep deformation of welded tuffs recovered from Busted Butte in the vicinity of Yucca Mountain, Nevada. Water saturated specimens of tuff from thermal/mechanical unit TSw2 were tested in creep at a confining pressure of 5.0 MPa, a pore pressure of 4.5 MPa, and temperatures of 25 and 250 C. At each stress level the load was held constant for a minimum of 2.5 {times} 10{sup 5} seconds and for as long as 1.8 {times} 10{sup 6} seconds. One specimen was tested at a single stress of 80 MPa and a temperature of 250 C. The sample failed after a short time. Subsequent experiments were initiated with an initial differential stress of 50 or 60 MPa; the stress was then increased in 10 MPa increments until failure. The data showed that creep deformation occurred in the form of time-dependent axial and radial strains, particularly beyond 90% of the unconfined, quasi-static fracture strength. There was little dilatancy associated with the deformation of the welded tuff at stresses below 90% of the fracture strength. Insufficient data have been collected in this preliminary study to determine the relationship between temperature, stress, creep deformation to failure, and total failure time at a fixed creep stress.
出版年	1995
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; 58 GEOSCIENCES ; TUFF ; CREEP ; YUCCA MOUNTAIN ; SITE CHARACTERIZATION ; Yucca Mountain Project
URL	http://www.osti.gov/scitech/servlets/purl/82462
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/266194
推荐引用方式 GB/T 7714	Martin, R.J. III,Boyd, P.J.,Noel, J.S. [New England Research, Inc., White River Junction, VT ,et al. Creep in Topopah Spring Member welded tuff. Yucca Mountain Site Characterization Project,1995.