ICRI Concrete Surface Profile Chips

Surface Roughness Verification Item

The International Concrete Repair Institute (ICRI) produces 10 distinct concrete profiles formed by various surface preparation methods. Each profile carries a CSP number ranging from CSP 1 (nearly flat) to CSP 10 (very rough; amplitude greater than ¼” [6 mm]).

These chips are designed as a visual and tactile comparator for identifying the degree of surface roughness. The user compares prepared concrete to the CSP chips and reports the chip number that most closely resembles the surface. Many jobs will specify the type of surface preparation required.

The ICRI CSP Chips are approximately 16 square inches (3.5” x 4.5”) and are designed to replicate 10 surface profiles shown below.

Features

Set of 10 distinct concrete profiles formed by various surface preparation methods.
Each profile carries a CSP number ranging from CSP 1 (nearly flat) to CSP 10 (very rough; amplitude greater than ¼” [6 mm]).
Designed as a visual and tactile comparator for identifying the degree of surface roughness.
User compares prepared concrete to the CSP chips and reports the chip number that most closely resembles the surface.
Many jobs specify the type of surface preparation required, making these chips essential for compliance.
Approximately 16 square inches (3.5” x 4.5”) in size

Available with or without the Technical Guideline (No. 310.2R-2013), which provides information on selecting and specifying concrete surface preparation methods.

Applications

Visual and tactile assessment of concrete surface profile depth.
Quick evaluation of concrete surface preparation effectiveness.
Field inspections of concrete surfaces.
Compliance verification with International Concrete Repair Institute (ICRI) standards.
Selection and specification of appropriate surface preparation methods for coating applications.

Technical Data

CSP Number	Description	Digital Depth Micrometer / ASTM D8271 (mils)
CSP 1	Nearly flat	6 ± 2
CSP 2	Grinding	6 ± 2
CSP 3	Acid-etched	11 ± 2
CSP 4	Light Shotblast	15 ± 2
CSP 5	Light Scarification	16 ± 2
CSP 6	Medium Shotblast	37 ± 4
CSP 7	Heavy Abrasive Blast	48 ± 4
CSP 8	Scabbled/Surface Retarder	Not measured
CSP 9	Heavy Scarification	Not measured
CSP 10	Not measured	Not measured