ML13357A043
| ML13357A043 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 12/23/2013 |
| From: | Bayrak O University of Texas at Austin |
| To: | NRC Region 1 |
| Floyd N | |
| References | |
| Download: ML13357A043 (45) | |
Text
ALKALI-SILICA REACTION AT SEABROOK STATION UPDATE ON TESTING PROGRAMS OGUZHAN BAYRAK, Ph.D., P.E.
Director l Ferguson Structural Engineering Laboratory Professor l Civil, Architectural and Environmental Engineering THE UNIVERSITY OF TEXAS AT AUSTIN
FSEL 2
STRUCTURAL TEST FACILITY
FSEL 3
CAPABILITIES CLOSED LOOP CONTROL TESTING MULTI-AXIAL HIGH TEMPERATURE INSTRUMENTATION NON-CONTACT HIGH PRECISION HIGH SPEED FABRICATION IN-HOUSE WELDING LARGE SCALE IN-HOUSE MACHINING
AGENDA SEABROOK TESTING PROGRAMS FSEL 4
ANCHORS REBAR ANCHORAGE ONE-WAY SHEAR
ANCHOR PROGRAM
ANCHOR PROGRAM FSEL 6
Wedge Anchors Undercut Anchors Medium size anchors, deep embedment Medium size anchors, medium embedment Half of all ASR-affected anchors installed before development of ASR.
Large size anchors, deep embedment Medium size anchors, medium embedment Small size anchors, shallow embedment
ANCHOR PROGRAM FSEL 7
Deep Anchor Test Setup Shallow Anchor Test Setup
PROGRESS TO DATE FSEL 8
Deep Anchor Test Setup Shallow Anchor Test Setup Specimen fabrication completed October 2012.
Control tests completed in November 2012.
Post-installed anchors tested at low level of ASR in November 2013.
OUTLOOK FSEL 9
- Environmental conditioning of blocks and beams is ongoing at FSEL
- Testing of pre-installed anchors at a low level of ASR is to be completed in December 2013.
BEAM PROGRAM
ANCHORAGE SHEAR BEAM PROGRAM FSEL 11 Series I Series II Control SC-1 SC-2 SC-3 Standard Deep Evaluate effect of ASR on shear strength and stiffness.
Evaluate efficacy of retrofit techniques.
Establish baseline behavior, test repeatability and depth effect.
SI-1 SI-2 SII-1 SII-2 SI-n SII-n
SHEAR ANCHORAGE BEAM PROGRAM FSEL 12 Series I Series II Control Evaluate effect of ASR on anchorage capacity and wall stiffness.
Evaluate efficacy of retrofit techniques.
Establish baseline anchorage performance.
AC-1 AI-1 AI-2 AII-1 AII-2 AI-n AII-n
REPLICATION OF SEABROOK DETAILS The reinforcement detailing represents the lack of through-thickness reinforcement within structural walls will enable focused study of shear and anchorage behavior at current and future levels of ASR FSEL 13
REPLICATION OF SEABROOK DETAILS The concrete mixture was developed through trial batching with representative coarse and fine aggregates is sufficiently reactive to obtain the necessary data in a timely manner yields mechanical properties that are representative of Seabrook structures FSEL 14
CONCRETE MATERIALS FSEL 15 Maine Pike Industries Westbrook, ME Santa Ana CA Lafarge Aggregates Bernalillo, NM Jobe Cemex El Paso, TX Type I/II Dragon Cement Thomaston, ME
BEAM FABRICATION CONDITIONING
& MONITORING STRUCTURAL TESTING BEAM PROGRAM WORKFLOW FSEL 16
AGGREGATE DELIVERY FSEL 17
AGGREGATE STORAGE FSEL 18
SIEVE ANALYSIS FSEL 19
FABRICATION AREA FSEL 20
CAGE FABRICATION FSEL 21
FORMWORK FSEL 22
READY MIX TRUCK FSEL 23
AGGREGATE BATCHING EQUIPMENT FSEL 24
AGGREGATE BATCHING FSEL 25
AGGREGATE MOISTURE CORRECTION FSEL 26
SODIUM HYDROXIDE ADDITION FSEL 27
WATER ADDITION FSEL 28
CEMENT BATCHING FSEL 29
CONCRETE SAMPLING EQUIPMENT FSEL 30
SLUMP TESTING FSEL 31
CONCRETE PLACEMENT FSEL 32
BEAM IDENTIFICATION FSEL 33
CURING FSEL 34
COMPRESSION TESTING FSEL 35
HANDLING FSEL 36
CONDITIONING FSEL 37
EXPANSION MONITORING GRID FSEL 38
EXPANSION MEASUREMENT FSEL 39
CRACK MEASUREMENT FSEL 40
SHEAR TESTING FSEL 41
ANCHORAGE TESTING FSEL 42
ANCHORAGE SHEAR PROGRESS / OUTLOOK FSEL 43 Series I Series II Control SC-1 SC-2 SC-3 Standard Deep Evaluate effect of ASR on shear strength and stiffness.
Evaluate efficacy of retrofit techniques.
Establish baseline behavior, test repeatability and depth effect.
SI-1 SI-2 SII-1 SII-2 SI-n SII-n 2/3 of the shear beams fabricated.
Fabrication, conditioning and monitoring efforts to continue until desired levels of ASR are achieved.
1st control test currently scheduled for Q1 of 2014.
SHEAR ANCHORAGE PROGRESS / OUTLOOK FSEL 44 Series I Series II Control Evaluate effect of ASR on anchorage capacity and wall stiffness.
Evaluate efficacy of retrofit techniques.
Establish baseline anchorage performance.
AC-1 AI-1 AI-2 AII-1 AII-2 AI-n AII-n 2/3 of the anchorage beams fabricated.
Fabrication, conditioning and monitoring efforts to continue until desired levels of ASR are achieved.
1st control test currently scheduled for Q1 of 2014.
Thank you!