A high-performance grinding bit (18 mm in diameter) attached to a grinding machine, pulverizes the concrete into a fine powder at exact depth increments, which can be selected between 0.5 mm to 2.0 mm. The grinding area is 73 mm in diameter and the maximum depth is 40 mm. 

For every depth increment of 1 mm, approximately 9 grams of powder is obtained for analysis. It takes 4 to 6 minutes to obtain each sample and about 5 minutes to determine the chloride content using the RCT Kit.

For in-situ testing, the Profile Grinder can be attached to horizontal or vertical surfaces using the anchor bolts and clamping pliers. 

Concrete sampling chloride measurements.

To obtain concrete powder samples:

• After immersion of specimens in a chloride solution in the laboratory, e.g., according to NT Build 443 “Concrete, hardened: Accelerated Chloride Penetration” or ASTM C1556-11a “Test Method for Determining the Apparent Chloride Diffusion Coefficient of Cementitious Mixtures by Bulk Diffusion” 

• Directly on-site on structures that have been exposed to chloride ion ingress.
• On cores taken from an existing concrete structure
• For chemical analysis of other potential deleterious ions or substances present in concrete 

• No-load speed: 2,500 – 8,700 rpm
• Rated input power: 950 W
• Output power: 510 W
• Thumbwheel for speed selection
• Electronic overload protection
• Electronic safety motor shutdown in case of unexpected stop
• Grinding diamond bit diameter: 18 mm
• Depth increments: 0.5 to 2.0 mm (± 2 %)
• Maximum grinding depth: 40 mm
• Grinding area: 4,185 mm2 (73 mm diameter)
• Powder sample: ≈ 9 g per each mm of grinded depth 

Profile Grinder Kit (PF-1100)

Includes:

Item	Order #
Grinder unit consisting of grinding machine, housing, handle cover with flange and counter nut, two handles and grinding diamond bit	PF-1101
Grinding support plate with green felt	PF-1102
Grinding bench plate with screws and nuts	PF-1103
Attachment ring and two bolts	PF-1104
Allen key, 4 mm	CC-25
2 adjustable clamping pliers	C-102-3
Set of anchoring tools	CC-30
2 seating rubber rings	PF-1105
Plastic bags, 50 pcs	PF-1106
Brush	PF-1107
Measuring tape	RCT-1028
14 and 17 mm wrenches	C-155/151
Sponge	PF-1108
Dust mask	PF-1109
Silicone oil bottle	L-24
Spare green felt	PF-1111
User Manual	PF-1112

To be ordered separately

• Technical datasheet

• Publications about “Rapid Chloride Test System”

More documentation is available upon request

• ASTM C1556-11a (2016): “Standard Test Method for Determining the Apparent Chloride Diffusion Coefficient of Cementitious Mixtures by Bulk Diffusion”
• AASHTO T 260: “Standard Method of Test for Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials”
• ASTM C114-18: “Standard Test Methods for Chemical Analysis of Hydraulic Cement”
• EN 14629: 2007: “Products and systems for protection and repair of concrete structures – Test methods – Determination of chloride content in cured concrete”