NC² States’ Q&A Listserv

The National Concrete Consortium (NC²) States’ Q&A Listserv is used by TTCC pooled fund member states to poll other member states about concrete paving and bridge deck issues.

Polling states then share with NC² question-and-answer spreadsheets/pdfs downloadable by clicking the appropriate topic link in the tables below that respectively cover questions on specifications, materials, design, foundations, construction, testing, preservation, and rehabilitation.

 

Specifications

TopicStateDate

Material Transfer Vehicle (MTV)

     Nebraska MTV Standard Spec

NE09/23/2020
Concrete Pavement on Full-Depth Reclamation (FDR) MaterialMN09/22/2020
Cold Weather ConcreteIL Tollway11/15/2019
Bridge Deck Thin Latex Concrete OverlayIL Tollway04/05/2019

Lab Certification

MN11/07/2014

Curing

MN04/22/2015

Air When Pumping

OH06/05/2015

Flexural Beams

MN05/29/2015

Rebar Splices

ID06/17/2015

Skid Resistance

PA07/13/2015

Incentives

PA10/05/2015

XRF Purchase Info

OH10/08/2015

Ready Mix Plant Certification

NE12/11/2015

Percent Pay for R&R Lots

PA01/28/2016

Autoclave Valves-Heyen

NE02/19/2016

Field Tester Certification

10/01/2016

Lane Tie Pull-Out Testing

MI05/17/2017

Prestressed Concrete

MI10/30/2017

Acceptance Criteria

NE03/29/2018
Lab Certification for Testing Contractor QC CylindersWV02/04/2020

 

Materials

TopicStateDate
Slag CementOH09/10/2020
Recycled Concrete Aggregate (RCA) and Life-Cycle Cost Analysis (LCCA)CO04/14/2020
Aggregate OptimizationIN05/01/2019
Type IL CementWV03/01/2019
Decorative ConcreteOH03/19/2019

Evaporation Retarders

IL10/03/2018

Accelerators

MN10/10/2014

Corrosion Inhibitors

OH05/07/2015

Manufactured Sand

AL06/29/2015

Internal Curing Specifications

IA10/08/2015

Recycled Concrete Aggregate (RCA)

IA07/19/2017

Prestressed Concrete

AL01/10/2018

 

Design

TopicStateDate
Concrete Pavement Dowel Bar ReductionNE09/03/2020
O-Dowel and Other Dowel Bar AlternativesGA05/06/2020
Pavement Thickness IntervalsGA08/23/2019
Number of Tied LanesMO12/13/2018

Keyway Requirements for Tied Lanes

MN09/21/2016

 

Foundations

TopicStateDate

Aggregate Base Type and Thickness

MO01/05/2016

 

Construction

TopicStateDate

(1) Maturity
(2) AASHTO COC: Concrete Maturity Meters

IA04/27/2020
Falsework RequirementsLA05/06/2019
Use of HIPERPAVOH08/30/2019
Skid ResistancePA05/18/2015
Air When PumpingOH05/14/2015
Form RemovalMN05/28/2014
Mass ConcreteMN05/15/2014
High-Performance Concrete (HPC)MN05/15/2014
Curing Bridge DecksIN03/20/2015
Rebar SplicesID06/17/2015
Mobile Mixer CalibrationsMO04/13/2018
Lane Tie Pull-Out TestingMI05/17/2017

Opening Strength

MN04/07/2015

Tie Bars

NE05/28/2015

Retempering

KS10/26/2015

Haul Time

IN02/11/2016

Dowel Basket Anchors

MI12/18/2017

 

Testing

TopicStateDate
ASTM C1202: Rapid Chloride Permeability Testing (RCPT)CAN10/01/2017
Super Air Meter (SAM) and Type B air meter calibrationWI04/01/2020

 

Preservation

TopicStateDate
Overlay RepairMN06/12/2019

PCC Repair Process

NE02/01/2017

 

Rehabilitation

TopicStateDate
Friction Reduction after Diamond Grinding Concrete PavementWV10/16/2020

Deck Grinding

IL01/21/2016
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