1 / 23

Drying Shrinkage

Drying Shrinkage. Presentation By Savita Goel May 17, 2002. Overview. Test Program Test Results Data Phase II Tests. Specifications. ASTM C 157 ASTM C 490. Specimens: Mortar Bars. Size: 1”x1”x10” No.: 3 nos. with studs at each end along the length of the bar Total Bars Made: 144.

pakuna
Download Presentation

Drying Shrinkage

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Drying Shrinkage Presentation By Savita Goel May 17, 2002

  2. Overview • Test Program • Test Results Data • Phase II Tests

  3. Specifications ASTM C 157 ASTM C 490

  4. Specimens: Mortar Bars • Size: 1”x1”x10” • No.: 3 nos. with studs at each end along the length of the bar • Total Bars Made: 144

  5. Specimens: Concrete Cylinders • Size: 6”x12” • No.: 2 nos. with 3 demec stud points along the surface on each cylinder • Total cylinders made: 108

  6. Curing • Temperature: 23o C + 1.5o C • Relative Humidity: > 98 % • Duration: 7 Days and 14 Days

  7. Drying • Mortar Bars • Temp.: 73.3 + 3 oF • RH: 50 + 4 % • Concrete Cylinders • Temp.: 96 + 3 oF • RH: 20 + 4 %

  8. Instrumentation • Length Comparator • Demec Strain Gage

  9. Length Measurement Age • Length measured at drying age of • 4, 7, 14, 21, 28, 35, 42, 49, 56, 90, 180 and 365 Days

  10. Mixtures • Mortar: 24 mixtures • Concrete: 12 mixtures

  11. Fresh Concrete Slump (5 + 1 ½ ”) Air Content (6 + 1 ½ %) Unit Weight Temperature Hardened Concrete Compressive Strength (at 7 & 28 Days) Tests

  12. Phase II Test • 25 Concrete Mixtures Based on Comp. Strength and Strength Ratio • Specimens: • 4”x4”x10” Concrete Bars • 6”x12” Concrete Cylinders

  13. Thank You ! Any Questions ?

More Related