ML13357A043

ASR at Seabrook Station Update on Testing Program

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

STRUCTURAL TEST FACILITY FSEL 2

CAPABILITIES IN-HOUSE IN-HOUSE FABRICATION LARGE SCALE MACHINING WELDING HIGH TESTING MULTI-AXIAL TEMPERATURE CLOSED LOOP CONTROL INSTRUMENTATION HIGH SPEED NON-CONTACT HIGH PRECISION FSEL 3

AGENDA SEABROOK TESTING PROGRAMS ONE-WAY REBAR ANCHORS SHEAR ANCHORAGE FSEL 4

ANCHOR PROGRAM ANCHOR PROGRAM Wedge Anchors Undercut Anchors Medium size anchors, deep embedment Large size anchors, deep embedment Medium size anchors , medium embedment Medium size anchors, medium embedment Small size anchors , shallow embedment Half of all ASR-affected anchors installed before development of ASR.

FSEL 6

ANCHOR PROGRAM Deep Anchor Test Setup Shallow Anchor Test Setup FSEL 7

PROGRESS TO DATE Specimen fabrication completed October 2012.

Control tests completed in November 2012.

Post-installed anchors tested at low level of ASR in November 2013.

Deep Anchor Test Setup Shallow Anchor Test Setup FSEL 8

OUTLOOK

• 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.

FSEL 9

BEAM PROGRAM BEAM PROGRAM SHEAR ANCHORAGE Control Series I Series II Standard SC-1 SI-1 SII-1 SC-2 SI-2 SII-2 Deep SC-3 SI-n SII-n Establish baseline behavior, test Evaluate effect of ASR repeatability and depth on shear strength and Evaluate efficacy of effect. stiffness. retrofit techniques.

FSEL 11

BEAM PROGRAM SHEAR ANCHORAGE Control Series I Series II AI-1 AII-1 AI-2 AII-2 AC-1 AI-n AII-n Evaluate effect of ASR Establish baseline on anchorage capacity Evaluate efficacy of anchorage performance. and wall stiffness. retrofit techniques.

FSEL 12

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 Type I/II Dragon Cement Thomaston, ME Santa Ana CA Lafarge Aggregates Bernalillo, NM Jobe Cemex Maine El Paso, TX Pike Industries Westbrook, ME FSEL 15

BEAM PROGRAM WORKFLOW BEAM CONDITIONING STRUCTURAL FABRICATION & MONITORING TESTING 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

PROGRESS / OUTLOOK SHEAR ANCHORAGE Control Series I Series II Standard SC-1 SI-1 SII-1 2/3 of the shear beams fabricated.

1st control SC-2 test SI-2 SII-2 currently SC-3 for Fabrication, conditioning and scheduled Deep SI-n SII-n until monitoring efforts to continue Q1 of 2014.

Establish baseline behavior, test desired levels of ASR are achieved.

Evaluate effect of ASR repeatability and depth on shear strength and Evaluate efficacy of effect. stiffness. retrofit techniques.

FSEL 43

PROGRESS / OUTLOOK SHEAR ANCHORAGE Control Series I Series II 2/3AI-1of the anchorage beams AII-1 1st control test AI-2 fabricated. AII-2 AC-1 currently scheduled for Fabrication, AI-n conditioningAII-n and Q1 of 2014. monitoring efforts to continue until desired Evaluate effectlevels of ASR of ASR are achieved.

Establish baseline on anchorage capacity Evaluate efficacy of anchorage performance. and wall stiffness. retrofit techniques.

FSEL 44

Thank you!