Ditapis dengan
Laboratory Studies of Galvanic Corrosion of Alumunium Alloys
ASTM STP 576 Calvanic and Fitting Corrosion-Field and Laboratory Studies
Pitting Caused by Chlorides or Sulfates in Organic Media
ASTM STP 576 Calvanic and Fitting Corrosion-Field and Laboratory Studies
PTI Restraint Cracks And Their Mitigation In Unbonded Post-Tensioned Buildin…
Based on extensive observations and a survey of the perfrmance of unbonded post-tensioned buildings, the paper presents a categorization the common cracks in beams and slabs. The principal causes of crack formation due to restraining effects of supporting structures are discussed in detaiI. Current methods of crack formation control are presented and evaluated. The consequences of cracks on se…
PTI Controlled Demolition Of An Unbonded Post-Tensioned Concrete Slab
This report describes the controlled demolition of 100,000 square feet of post-tensioned slab, which was necessitated by suspicion of damage due to fire. The saw cuttings procedure was used to neutralize over 900 post tensioned tendons. The neutralization of the tendons was programmed to reveal information on response of live and in-place tendons to saw cutting. Observations made are described …
PTI Earthquake Performance Of Unbonded Post Tensioned Buildings
One of the strongest earthquakes ever to hit California shook hundreds of post tensioned buildings on October 17, 1989, with an intensity of 7.1 on the Richter scale. The earthquake, named Lorna Prieta, had its epicenter approximately 65 miles southeast of downtown San Francisco. Widespread damage was caused in the vicinity of the epicenter and as far as San Francisco and Oakland. Many post-te…
