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, which are downloadable by clicking the appropriate topic link in the table below.

TopicStateDateCategory

Keyway Requirements for Tied Lanes

MN9/21/2016Design
Number of Tied LanesMO12/13/2018Design
Pavement Thickness IntervalsGA8/23/2019Design
O-Dowel and Other Dowel Bar AlternativesGA5/6/2020Design

Accelerators

MN10/10/2014Materials
Concrete Pavement Dowel Bar ReductionNE9/3/2020Design

Corrosion Inhibitors

OH5/7/2015Materials

Manufactured Sand

AL6/29/2015Materials

PCC Repair Process

NE2/1/2017Preservation

Internal Curing Specifications

IA10/8/2015Materials
Overlay RepairMN6/12/2019Preservation

PCC Repair Process

NE2/1/2017Preservation

Recycled Concrete Aggregate (RCA)

IA7/19/2017Materials
Overlay RepairMN6/12/2019Preservation

Prestressed Concrete

AL1/10/2018Materials

Deck Grinding

IL1/21/2016Rehabilitation

Evaporation Retarders

IL10/3/2018Materials
Friction Reduction after Diamond Grinding Concrete PavementWV10/16/2020Rehabilitation
Type IL CementWV3/1/2019Materials
Decorative ConcreteOH3/19/2019Materials
Lab Certification for Testing Contractor QC CylindersWV2/4/2020Specifications
Aggregate OptimizationIN5/1/2019Materials

Acceptance Criteria

NE3/29/2018Specifications
Recycled Concrete Aggregate (RCA) and Life-Cycle Cost Analysis (LCCA)CO4/14/2020Materials

Prestressed Concrete

MI10/30/2017Specifications
Slag CementOH9/10/2020Materials

Lane Tie Pull-Out Testing

MI5/17/2017Specifications
Type 1L Portland Limestone CementOH8/20/2021Materials

Field Tester Certification

10/1/2016Specifications
Type IL ConcreteID7/26/2022Materials

Autoclave Valves-Heyen

NE2/19/2016Specifications

Percent Pay for R&R Lots

PA1/28/2016Specifications

Aggregate Base Type and Thickness

MO1/5/2016Foundations

Ready Mix Plant Certification

NE12/11/2015Specifications

XRF Purchase Info

OH10/8/2015Specifications

Incentives

PA10/5/2015Specifications

Skid Resistance

PA7/13/2015Specifications
ASTM C1202: Rapid Chloride Permeability Testing (RCPT)CAN10/1/2017Testing

Rebar Splices

ID6/17/2015Specifications
Super Air Meter (SAM) and Type B air meter calibrationWI4/1/2020Testing

Flexural Beams

MN5/29/2015Specifications
Non-Destructive Technology Use and Tensile Bond StrengthIA12/6/2021Testing

Air When Pumping

OH6/5/2015Specifications
DOT Testing ChargesTX6/23/2022Testing

Curing

MN4/22/2015Specifications

Lab Certification

MN11/7/2014Specifications
Bridge Deck Thin Latex Concrete OverlayIL Tollway4/5/2019Specifications
Cold Weather ConcreteIL Tollway11/15/2019Specifications
Concrete Pavement on Full-Depth Reclamation (FDR) MaterialMN9/22/2020Specifications

Material Transfer Vehicle (MTV)

     Nebraska MTV Standard Spec

NE9/23/2020Specifications
AASHTO T358-15 Resistivity TestWV1/24/2022Specifications
Steel SpecificationsIL4/21/2022Specifications

Early Age Distresses

SD04/07/2021Distress
PCC Buckling TrendsMN07/07/2021Distress
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