Rapid Set Concrete Patch Materials (RSCP)

Rapid-set concrete patch materials are used widely in the transportation industry, from horizontal applications for pavements; to vertical and overhead applications for bridges and structures. According to the NTPEP Project Work Plan which describes the ASTM- and AASHTO- test methods under which products are evaluated, “the study will look at both water-based and non-water-based rapid setting materials used to patch portland cement concrete. These will include cementitious, latex modified, polymer resin, magnesium phosphate, and other materials expressly designed for patching portland cement concrete bridge decks and portland cement concrete pavements. In order to be classified as fast-setting, the product must reach a traffic loadable condition (1200 psi compression) in less than three hours.

The NTPEP Project Panel responsible for authoring the Project Work Plan convenes yearly at the NTPEP National (Annual) Meeting. During this working meeting, the Project Work Plan is discussed; changes made, and shortly thereafter balloted for adoption. Improvements are immediately implemented in the next available testing cycle. When compared to other standards development exercises, the NTPEP process is agile, effective, and efficient.

NTPEP Designated Lab:

  • Nelson Testing Laboratories

NTPEP - Rapid Set Concrete Patch Materials


Committee Name:
NTPEP-Technical Committee on Rapid Set Concrete Patching Materials
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Work Plan
NTPEP tests products according to a Project Work Plan, which describes the laboratory and/or field test protocols used to conduct the evaluation. The Project Work Plan is a consensus-based document and includes peer review and input from industry experts. Each Project Work Plan is adopted after receiving at least two-thirds affirmative support from 52 AASHTO member states. The Project Work Plan is the basis for host states to conduct their testing and evaluation. When implemented by state DOTs, their own state standard specifications may supersede the NTPEP Project Work Plan. Industry is advised to be aware of state-level requirements which may supersede basic NTPEP testing.

​Project Work Plan for Evaluation of Rapid Set Concrete Patch Materials ​

Previous Work Plan 2016​
Previous Work Plan 2015​
Previous Work Plan 2014​

User Guide
RSCP User Guide

Please go to NTPEP DataMine.

Please go to NTPEP DataMine.

Rapid-set Concrete Patching Materials (RSCP)

Overview

  • This evaluation includes most aspects of ASTM C928 “Standard Specification for Packaged, Dry, Rapid-Hardening Cementitious Materials for Concrete Repairs.” Products types evaluated by this program are:
    • Cementitious, polymer modified, and polymer repair
    • Products intended for horizontal use, vertical/overhead use, or both horizontal and vertical/overhead
  • Products may be tested neat (as packaged with nothing added other than water or liquid) and/or with extender aggregate.
  • The evaluation includes lab testing of all product
  • The evaluation includes a field trial of products intended for horizontal use and both horizontal and vertical/overhead use.
  • No field trial for products intended for vertical/overhead use
  • Retesting – Lab testing every 5

 

Lab testing of Cementitious Products

ASTM C1583, “Bond Strength by Direct Tension”

ASTM C882, “Bond Strength using Slant Shear”

AASHTO T 277, “Chloride Ion Penetration”

AASHTO T 358, “Surface Resistivity”

AASHTO T 260, “Chloride Ion Content”

AASHTO T 106, “Compressive Strength” neat

AASHTO T 22, “Compressive Strength” extended

AASHTO T 160, “Length Change”

*AASHTO T 161, “Resistance to Freeze/Thaw”

AASHTO T 198, “Tensile Strength”

AASHTO T 131, “Time of Setting by Vicat Needle”

ASTM C403, “Time of Setting by Penetration Resistance”

* Manufacturers must have products tested as per AASHTO T 161 Procedure A, Procedure B, or both.

 

Lab testing of Polymer Modified Products

ASTM C1583, “Bond Strength by Direct Tension” ASTM C882, “Bond Strength using Slant Shear”
AASHTO T 277, “Chloride Ion Penetration” AASHTO T 358, “Surface Resistivity”
AASHTO T 260, “Chloride Ion Content” AASHTO T 106, “Compressive Strength” neat
AASHTO T 22, “Compressive Strength” extended AASHTO T 160, “Length Change”
*AASHTO T 161, “Resistance to Freeze/Thaw” ASTM C884, “Thermal Compatibility”
ASTM C403, “Time of Setting by Penetration Resistance”
  • Manufacturers must have products tested as per AASHTO T 161 Procedure A, Procedure B, or both

 

Lab testing of Polymer Products

ASTM C1583, “Bond Strength by Direct Tension” ASTM C882, “Bond Strength using Slant Shear”
AASHTO T 277, “Chloride Ion Penetration” ASTM C579, “Compressive Strength” neat and

extended

ASTM C403, “Time of Setting by Penetration Resistance” ASTM C881, “Gel Time (Pot Life)”
ASTM C884, “Thermal Compatibility” ASTM C531, “Linear Shrinkage & Coefficient of

Thermal Expansion”

 

Extender Aggregate:

If the product is submitted for evaluation with extender aggregate, the aggregate is tested using the following methods:

    • AASHTO T 27, “Standard Method of Test for Sieve Analysis of Fine and Coarse ”
    • AASHTO T 103, “Standard Method of Test for Soundness of Aggregates by Freezing and Thawing” Procedure A.
    • AASHTO T 84 and/or T 85, “Standard Method of Test for Specific Gravity and Absorption of Fine Aggregate” and/or AASHTO T 85, “Standard Method of Test for Specific Gravity and Absorption of Coarse ”

 

Field evaluation

A test patch is prepared for each product with typical size of 9 feet long, 3 feet wide, and 4 inches deep. Manufacturers provide labor and equipment needed to install patching material. Field observations are made at the time of installation and at intervals of 12 and 24 months. The field trial provides for evaluation of edge debonding, percent of total area that becomes delaminated, and mid panel cracking. Photos are taken at the time of installation and each evaluation.

Links

Additional information about this evaluation can be found at: http://www.ntpep.org/Pages/RSCP.aspx

AASHTO National Transportation Product Evaluation Program (NTPEP) www.ntpep.org

AASHTO NTPEP DataMine https://data.ntpep.org

 

Sample Specifications

  • Kansas DOT spec for rapid set conc patch
  • Maine DOT Product Qualification Criteria for Fast Setting Conc Patch
  • NHDOT qual criteria for Fast Set Non Shrink Patching Mortar