Tendon Encapsulating or Not - Post Tensioned Slabs
Tendon Encapsulating or Not - Post Tensioned Slabs
(OP)
Does anyone have any references for determining the corrosivity of the soil to reinforcing steel in Post-Tensioned Slabs to determine if encapsulating the tendons is necessary? I believe CalTrans has their limit at 500 ppm of chlorides. I also believe that soil moisture contents below 17.5 percent significantly reduces the chloride ion activity. However, I have not found anything specific to PT Slabs. Anyone have anything?





RE: Tendon Encapsulating or Not - Post Tensioned Slabs
RE: Tendon Encapsulating or Not - Post Tensioned Slabs
Post-Tensioning Institute - in their recent updates to the manual "Standard Requirements" Section 6.3: Soils with chlorides greater than 200ppm need to be encapsulated. It seems pretty stringent.
I looked at IBC, and IBC sends you to ACI and ACI refers more to chlorides in the materials for concrete.
I will see of ACI 323.6 is something different.