Pullout Resistance of Reinforcement in Lightweight Cellular Concrete Fill

Backfill materials have been commonly used as reinforced fill in Mechanically-Stabilized Earth (MSE) structures. Natural aggregate (gravel or sand) and crushed stones are the primary materials used as backfill for this application. However, aggregate is relatively heavy, so it often induces high earth pressure, settlement, lateral movement, and instability of earth structures. To avoid these problems, lightweight aggregate has occasionally been used. Due to the limited availability and high cost of lightweight aggregate, lightweight cellular concrete fill has grown in popularity in recent years, e.g., used as a backfill material for MSE walls. However, there is very limited information on pullout resistance of reinforcement (e.g., steel strips or geogrids) in lightweight cellular concrete fill at different conditions (reinforcement type, curing time, and normal stress), which is required for design of MSE structures. The objective of this research is to evaluate the pullout resistance of reinforcement in lightweight cellular concrete under different conditions.

Language

• English

Project

• Status: Active
• Funding: $67753
• Contract Numbers:

  K-TRAN: KU-21-2

  RE-0814-01

  C2169

• Sponsor Organizations:

  Kansas Department of Transportation

  Eisenhower State Office Building
  700 SW Harrison Street
  Topeka, KS  United States  66603-3754
• Performing Organizations:

  University of Kansas Center for Research, Incorporated

  2291 Irving Hill Drive, Campus West
  Lawrence, KS  United States  66045
• Principal Investigators:

  Han, Jie

  Parsons, Robert

• Start Date: 20200701
• Expected Completion Date: 20221231
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Backfill soils; Concrete; Fills; Lightweight aggregates; Mechanically stabilized earth; Pull out test
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Maintenance and Preservation; Materials;

Filing Info

• Accession Number: 01760105
• Record Type: Research project
• Source Agency: Kansas Department of Transportation
• Contract Numbers: K-TRAN: KU-21-2, RE-0814-01, C2169
• Files: RIP, STATEDOT
• Created Date: Dec 15 2020 3:13PM