Injection Grout

Restore concrete structures by repairing hairline to 3/4″ cracks. 11 standard colors produce repairs that are less visible.

Where to use:

Repair and reconstruct brownstone, sandstone, limestone, cast stone, concrete, marble, granite, terracotta, and brick.

How to apply:

Inject using injection syringes, modified bulk guns, or low-pressure grout pumps. Additional Information

Performance Characteristics

  • Low shrinkage Maintains integrity of repair, resists cracking.
  • Thermal compatibility Prevents delamination due to temperature change.
  • Durable Resistant to weathering action, excellent freeze/thaw stability and abrasion resistance.
  • Low Viscosity Excellent flow into cracks and voids.
  • Breathability Will not cause damage to structure by restricting moisture vapor flow.
  • Single Component Easy to batch in less than full pail quantities.

Surface Preparation

  • Remove loose and deteriorated material, laitance, dirt, dust, oil and any surface contaminants that will inhibit proper bond.
  • It is recommended to use air or water to remove unseen debris from the crack interior prior to injection.
  • Test all cracks and voids for proper flow prior to injection. If potable water will not flow  into the crack, the injection grout will not be successful either.
  • Surface temperature and ambient temperature should be greater than 40°F and less than 90°F.

Mixing

  • Mechanically mix using a low speed drill (400-600 rpm) and mixing paddle or mortar mixer.
  • Pour 5.5 – 6.5 quarts of potable water into a clean mixing vessel and slowly add all of the powder. Use a 3:1 powder to water ratio for small batches.
  • If using as an adhesive, use a mix ratio of 4:1 – 5:1 depending on preference of the installer.
  • Mix only as much material as can be placed in 15 – 20 minutes.
  • Do not overmix, as this will entrain excess air.

Application

  • Drill a series of injection ports directly into the center of the crack at a downward (approximately 45°) angle to the substrate.
  • Determine the spacing of the ports by first drilling a single port and filling it with water. This will provide a visual reference as to the space required between each port.
  • After drilling all ports, clean debris from the crack with both compressed air and water.
  • To prevent seepage of grout between ports, seal with a non-staining, easy to remove clay, sealant or caulk.
  • Begin by injecting the lowest port in the crack and work upwards. Move to the next higher port when the grout is visible at that port or when the crack will no longer accept additional material.
  • For cracks more than 3/4” wide place foam backer rod into crack and proceed as described above. Once the grout has hardened, remove backer rod and fill remaining depth with ISR-CM, Matrix or Conpro Set repair mortar.
When using injection grout to fill behind a delaminated substrate
  • Determine the spacing required as discussed above. Once this has been determined, lay out a grid of ports spaced equidistant in a vertical and horizontal plane.
  • Inject grout into the lowest line of ports and continue until it flows freely from this port and other ports at the same level.
  • Seal ports using a non-staining clay, sealant or caulk and proceed to the next highest vertical line of ports.
  • Repeat the process until each port will no longer accept additional material.
  • Clean up overflow and seepage immediately with clean water to prevent staining.
When using as an adhesive to reconstruct broken masonry elements
  • Before mixing grout, fit broken pieces together and determine if clamps and/or wedges are needed to secure pieces while they cure. Use dowels or reinforcing pins as determined by an engineer.
  • Saturate interface with water where grout will be applied, while surface is still damp, apply a thin coat (1/16”) to both sides of the entire interface.
  • Press and hold pieces together. Wipe excess from face with a sponge and clean water.
  • Do not disturb the repair for 24 hours.

Equipment

  • Injection can be achieved by using injection syringes, modified bulk guns, or low pressure grout pumps (less than 30 psi).
  • Note: Strain grout with a fine screen or sieve prior to syringe application.

Curing

  • 24 hours under normal circumstances.

Clean Up

  • Clean tools and equipment with water immediately after use.
  • Cured material must be removed mechanically.

Coverage/Yield

  • 0.41 ft³/30 lb pail.

Product Handling

Packaging
  • 30 lb plastic pails.
Shelf Life
  • 18 months when properly stored.
Storage
  • Transport and store in cool, clean, dry conditions in unopened containers.
  • High temperature or high humidity will reduce shelf life.

First Aid

  • If swallowed, contact a medical professional immediately.
  • Do not induce vomiting unless directed to do so by a qualified medical professional.
  • In case of skin contact, wash thoroughly with soap and water.
  • In case of eye contact, flush with a high volume of water for at least 15 minutes.
  • For respiratory problems, remove person to fresh air. If difficulty persists, contact a medical professional.

Disposal

  • Dispose of material in accordance with local, state and federal regulations.
  • Technical Data
  • Data Bulletin
  • CSI Spec
  • Competition
  • Curing
  • FAQs
  • Safety Data Sheet
  • Color Card

Physical state and appearance

 

Gray powder

 

Viscosity

 

65 – 75 KU immediate lab

 

Specific gravity – wet

 

1.8

 

Volume ratio

 

1 part water/3 parts powder

 

Weight ratio

 

1 lb. water/2.3 lbs powder

 
  

7 Days

28 Days

Compressive strength

ASTM C109

≥ 2800 psi

≥ 3800 psi

Tensile strength

ASTM C348

 

≥ 475 psi

FOR PROFESSIONAL USE ONLY
Conproco warrants this product for one year from the date of manufacture to be free from manufacturing defects and to meet the technical properties on the current technical data sheet if used as directed within shelf life. User determines suitability of product for use and assumes all risks. Buyer's sole remedy shall be limited to the purchase price or replacement of product, exclusive of labor or cost of labor. March 2, 2020.

NO OTHER WARRANTIES EXPRESSED OR IMPLIED SHALL APPLY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. CONPROCO CORP SHALL NOT BE LIABLE UPON ANY LEGAL THEORY FOR SPECIAL OR CONSEQUENTIAL DAMAGES.

Conproco
Cathedral Stone
Edison Coatings
US Heritage
Keim
Matrix
Jahn M70
Custom System-45
HL-60 or HS-60
Restauro Giess or Fuge
Matrix VE
none
none
none
none
Matrix Superfine
Jahn M100 & M120
none
TB-15
none
Matrix TR
none
Thin-Fill 55
none
Restauro-Top
ISR CM
Jahn M90
none
none
none
Repoint
Jahn M110
Lime Mortar
HRM Type – N only or Lime Mortar or Putty
none
Repoint VE
none
none
none
none
Injection Grout
Jahn M30/40
Pump X-53
IG-10
Concretal Fine Filler
Terra Color
CSP Mineral Silicate
Aquathane-UA210
none
Soldalit
Terracotta Finish
CSP Terra Cotta Glaze
none
none
none
M3P
Minersal Silicate Coating
none
none
Keim Granital
M3P-X
Fixative
none
none
Fixative
M3P Overcoat
none
none
none
Soldalit TDS

 

Cementitous Products

Product
Minimum Temperature
Minimum to 55° F
55°F – 70° F
70° F and above
Minimum Time to Coat
ISR CM
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
ISR VO
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
ISR AG
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Conpro Set
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Quick Shot
40°
8 Hours
2 Hours
1 Hour
3 to 5 days depending on temperature
Forment (remove forms)
40°
72 Hours
48 Hours
24 Hours
3 to 5 days depending on temperature
Gun Shot LPS
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Injection Grout (remove clay)
40°
24 Hours
24 Hours
24 Hours
3 to 5 days depending on temperature
One Shot 2C
45°
24 Hours
12 Hours
6 Hours
3 to 5 days depending on temperature
Matrix
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Matrix TR
50°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Repoint
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Plastermix
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Structural Skin
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Conpro One Coat
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Conpro Stucco
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Foundation Coat
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature
Super Seal
40°
12 Hours
4 Hours
2 Hours
3 to 5 days depending on temperature

Liquid Products

Product
Minimum Temperature
Minimum to 55° F
55°F – 70° F
70° F and above
Minimum Time to Coat
Conpro Start
40°
18 Hours
12 Hours
6 Hours
Refer to temperature
ECB
40°
8 Hours
1 Hour
30 Minutes
Dry to touch
Primer
40°
8 Hours
1 Hour
30 Minutes
Color change to orange
Shield MX
40°
24 Hours
18 Hours
12 Hours
Dry to touch
M3P & M3P-X
45°
24 Hours
18 Hours
12 Hours
Dry to touch
M3P Overcoat
45°
24 Hours
18 Hours
12 Hours
Dry to touch
Conpro Lastic
45°
24 Hours
18 Hours
12 Hours
Dry to touch
Color Coat
45°
24 Hours
18 Hours
12 Hours
Dry to touch
Super Color Stain
45°
24 Hours
18 Hours
12 Hours
Dry to touch
Elastideck
45°
24 Hours
18 Hours
12 Hours
Dry to touch
Terra Color
45°
24 Hours
18 Hours
12 Hours
Dry to touch
Terracotta Finish
45°
24 Hours
18 Hours
12 Hours
Dry to touch

Patching requires preparing the repair zone by saw cutting the edges and a minimum of 3/4" deep.  Injection Grout fills voids and does not require the same level of preparation.

Injection Grout does not need special equipment for successful application. Common devices are basters, syringes, and ketchup squeeze bottles.

Drill a series of injection ports directly into the center of the crack at a downward angle. Seal the surface of the crack with non-staining easy to remove clay. Begin by injecting the lowest port and work upwards.

Projects Showcase

Baltimore World Trade Center

Project History

Where the city meets the sea lies the Baltimore WTC. Rising majestically from Baltimore’s Inner Harbor, the observation deck of the WTC offers a panoramic 360° view of the city. Constructed in 1977, this 30 -story tower is the world’s tallest regular pentagonal building. Designed by Henry N. Cobb to resemble the prow of a ship rising out of the water, the office structure includes docking facilities for the Maryland Port Administration, and served as a focal point for area redevelopment. Corroding rebar set close to the façade surface caused extensive spalling. Once the damaged areas were removed, ECB corrosion inhibitor was used to coat rebar before patching. ECB was chosen not only for its chemical properties, but also because it was a very easy product to use from high swing staging in often windy conditions. ECB is single component, CSI simply had to close the container when not in use, meaning pot life was not an issue. Since ECB can also be used as a bonding primer, wind conditions and the potential for product blowing on to the substrate was not a concern. A standard color of MIMIC repair mortar was an excellent match for the building. MIMIC was the preferred mortar because it could be easily finished to replicate the board form finish of the original substrate. Injection Grout was selected for its ability to fill hairline to ¾ inch cracking with one standard formulation.

 

Basilica of the Assumption

Project History

The Baltimore Basilica, the first metropolitan cathedral constructed in America after the adoption of the Constitution began construction in 1806 and was completed in 1821. In the summer of 2011 an earthquake caused considerable damage to the Basilica, the movement caused cracking in the plaster finish of the ceiling domes that covered the brick backup. Approximately 600 lineal feet of cracks ranging from hairline to 2 inches wide and from several inches to 24 inches deep were identified as needing repair. Smaller cracks were addressed by drilling ports and filling with Conproco Injection Grout, a cementitious micro-grout that is unique in that can fill cracks from hairline to 2 inches wide. For larger cracks the plaster was removed and Injection Grout was pumped into the voids in the brick backup caused by the earthquake. Some arches were reinforced with customized anchor systems to stabilize the backup the masonry in conjunction with the newly installed grout. The plasterwork was restored and recoated to complete the renewed finish.

Contractor
Coastal
Exteriors LLC,
Cockeysville, MD

Distributor
Coastal
Exteriors LLC,
Cockeysville, MD

 

Product Training Videos

Associated Products