Grouting materials and practices for century-long corrosion protection of post-tensioned concrete bridges
By: Manickam, Karthikeyan
.
Contributor(s): Pillai, Radhakrishna G.
Publisher: Mumbai ACC LTD 2023Edition: Vol.97(1), Jan.Description: 6-20p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: Typically, the post-tensioned (PTd) concrete bridges have an anticipated design life or corrosion-free service life of 100+ years. This paper highlights some of the concerns associated with the grouts and grouting practices, which have resulted in a large inventory of inadequately grouted PTd systems. Then, the relevant material properties and associated performance tests to qualify post-tensioning (PT) grouts are discussed. An experimental program on the fluidity, bleed resistance, volume change, and compressive strength of three commercially available PT grouts and one in-house developed PT grout is presented. Then, a compilation of existing standard specifications for PT grouts is presented. Following this, a set of comprehensive, and stringent performance specifications for PT grouts–to enable complete filling of PT ducts–was proposed. Finally, good grouting practices to achieve century-long corrosion protection for PT systems are recommended.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
|---|---|---|---|---|---|---|
Articles Abstract Database
|
School of Engineering & Technology (PG) Archieval Section | Not for loan | 2023-0983 |
Typically, the post-tensioned (PTd) concrete bridges have an anticipated design life or corrosion-free service life of 100+ years. This paper highlights some of the concerns associated with the grouts and grouting practices, which have resulted in a large inventory of inadequately grouted PTd systems. Then, the relevant material properties and associated performance tests to qualify post-tensioning (PT) grouts are discussed. An experimental program on the fluidity, bleed resistance, volume change, and compressive strength of three commercially available PT grouts and one in-house developed PT grout is presented. Then, a compilation of existing standard specifications for PT grouts is presented. Following this, a set of comprehensive, and stringent performance specifications for PT grouts–to enable complete filling of PT ducts–was proposed. Finally, good grouting practices to achieve century-long corrosion protection for PT systems are recommended.
Click on an image to view it in the image viewer
There are no comments for this item.