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MAINLINE™
Pre-extended, Packaged
RAPID REPAIR CONCRETE

MAINLINE structural repair concrete by CeraTech, Inc.

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MAINLINE structural repair concrete by CeraTech, Inc.Mainline™ is an extremely versatile, cementitious, rapid setting, semi-leveling structural repair concrete. It is a single component powder that is water activated. Mainline™ has 20 - 45 minutes of working time and will reach compressive strengths of more than 2,000 psi within 4 hours from the addition of water. Mainline™ can be applied in ambient temperature ranges from 30 to 120 degrees Fahrenheit. Mainline™ finishes like traditional Portland based concrete and cleans up easily with water. Mainline™ rapid repair concrete offers all of the performance and ease of use characteristics associated with CERATECH’s Pavemend® High Performance Repair Products, in a low cost, turn-key, aggregate extended package.

Recommended Uses
Mainline™ has been designed for horizontal applications providing for low cost structural repair of building restoration/balcony projects, loading dock ramps, parking garages, and form and pour projects.

Features and Benefits

Features

Benefits

Rapid Strength Development

Rapid Return to Service

Non-shrink

Dimensionally Stable

Mild Modulus of Elasticity

Exceptional Volume Stability Over Wide Temperature Ranges Reducing Stress at Bond Interface

Low Coefficient of Thermal Expansion / Contraction

Dimensionally Stable in Wide Temperature Ranges for Long Term Durability of Repair

Exceptional Early Bond Strengths Durable Repairs

High Early Flexural Strengths

Exceptional Load Transfer

Self Priming

No Bonding Agents

Self Curing No Moist Curing, Tenting or Blanketing

Water Clean-Up

No Hazardous Chemicals Required for Cleaning Tools

Wide Temperature Applications

Can Be Applied in Extreme Temperatures Without Effecting Long Term Performance Characteristics

Pre-extended

Utilizes high quality aggregates for improved strengths

Limitations
• Not recommended for temperatures below 30°F/-1°C and above 120°F/49°C
• Not for submerged applications
• Will not bond to polymers
• Pumping not recommended

Unit Weight (with water, sand & aggregate)
152 lb/ft³ (2434 kg/m³)

Setting Time

Set Times at 72°F/22°C at 2” (5 cm) material depth
Initial set: 30 - 35 minutes
Final set: 35 - 45 minutes

Volume Yield (#8 - 3/8” fractured stone- included)
Concrete (binder + sand + coarse agg. + H20 ) = 0.40ft³ (.011m³)

Packaging:
53.5 lb (24.3 kg) Bag

Shelf Life:
1 year

Storage:
Bags must be kept dry

Technical Data
Results provided by licensed engineering test laboratory and represent typical results from production materials. Actual results may vary from third party testing results; however, CERATECH’s materials meet and/or exceed established internal quality control standards, (available upon request) . All samples were air cured.

Property
RESULTS
4 in. x 8 in. cylinders
TEST METHOD
Compressive Strengths, psi (MPa) 4x8 Cylinders
  4 hours

2800 (15.9)

ASTM C 39

  1 day - 24 hours

3614 (24.9)

ASTM C 39

  7 days

6200 (42.7)

ASTM C 39

  28 days

9212 (63.5)

ASTM C 39

Flexural Strength, psi (MPa)

 

7 days

834 (5.8)

ASTM C 78

 

28 days

997 (6.9)

ASTM C 78

Splitting Tensile Strength, psi (MPa)

 

24 hours

528 (3.7)

ASTM C 496

 

7 days

784 (5.4)

ASTM C 496

 

28 days

902 (6.2)

ASTM C 496

Bond Strength, psi (MPa)

 

1 day - 24 hours

2256 (15.5)

ASTM C 882

 

7 days

3274 (22.6)

ASTM C 882

Rapid Freeze Thaw Resistance (Durability Factor - Retained percentage of Dynamic Modulus)

 

300 cycles

100%

ASTM C 666A

Scaling Resistance, lbs/ft2 (kg/m2)

 

50 cycles

0

ASTM C 672

Modulus of Elasticity, msi (GPa)

 

28 days

4.8 (33.0)

ASTM C 469

Coefficient of Thermal Expansion, in/in/°F
  28 days
4.7
AASHTO TP 60
Length Change, % of total length
  28 days soak / 28 days dry
-0.0280/-0.0080
ASTM C 157


Site Preparation
Surfaces should be prepared in accordance with ICRI 03730, “Guide for Surface Preparation for the Repair of Deteriorated Concrete Resulting from Reinforcing Steel Corrosion.” and / or ACI 546R-96Concrete Repair Guide”. Concrete surface should be prepared by appropriate mechanical methods to obtain an exposed aggregate surface with a minimum surface profile of +/- 1/16” (1.5 mm) in accordance with ICRI 03732. Pre-existing coatings or surface treatments should be completely removed. Dry, clean, stable surfaces are required. Remove all standing water. Reinforcing steel should have no loose scale. Surfaces of host concrete must be damp.

Mixing Instructions

       Standard Mixing Procedures (Rotating Drum Concrete Mixer)
  • Pre-wet cement mixer with water then drain all water from mixer (away from repair area)
  • Start mixer - Add Water - Mainline™ requires a total of 2 quarts of water per 53.5lb. unit. Initially, add-in only 1 quart of water. (Mainline™ is a water to binder sensitive cement. NEVER use less than 2 quarts of water nor MORE THAN 2 1/8 quarts of water per 53.5lb. unit of Mainline™.)
  • Add pre-determined units of Mainline™ Mix for 1 minute
  • Add -in remaining quart of water per 53.5lb. unit of Mainline
  • Mix for 6 additional minutes or 7 minutes total
  • Pour all contents into repair area
  • Clean mixer or repeat process for next batch
     
       NOTES:
  1. In ambient temperatures, < 50°F/10°C, use warm water between 70°F/22°C and 90°F/32°C
  2. In ambient temperatures > 85°F/29°C, use cooler water between 50°F/10°C and 70°F/22°C
  3. Working times will vary when mix water temperature’s are outside of these recommendations
  4. Minimum recommended batch size is 2 units (Use 4 quarts of water for 2 bag batches)

Application & Finish
  • Surfaces of host concrete must be damp (SSD) with no standing water.
  • Working times based on ambient temperature, types of aggregate and total amount of water
  • Working times are influenced by surface temperature and repair profile.
  • Minimum profile thickness is 1.25" (3.2 cm). There are no restrictions to the depth of the repair profile.
  • Upon initial set, a broom finish can be applied. Upon final set, the material can be saw-cut, drilled, sanded and/or polished
  • Do not re-temper. The addition of water to the surface of the repair will negatively affect the materials final properties.
  • General loading in 4 hours for wheeled traffic and 2 hours for foot traffic after addition of water.
  • All previously existing joints must be re-established within 4 hours of final set.
  • Self-curing, protect with blankets or equivalent in ambient temperatures below freezing (32°F/0°C). 
  • Clean all tools and equipment with water prior to the material reaching final set.

Safety 
  • See Material Safety Data Sheet (MSDS).
  • This document does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this document to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
  • Dispose of water materials in accordance with Federal, State, and Local regulations.
  • The use of a dust mask, safety goggles and gloves is recommended.
  • Keep out of reach of children.

WARRANTY
CERATECH, Inc. (“CERATECH”) warrants that its products are free from defects in materials and workmanship. If any CERATECH product fails to conform to this warranty, CERATECH will replace the product at no cost to the buyer or refund the purchase price, at CERATECH’s election. Any warranty claim must be made within one (1) year from the date of the shipment of the product to the buyer. In no event shall CERATECH be liable to the buyer for any consequential or incidental damages of any nature. CERATECH MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, WRITTEN OR ORAL AS TO THE MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF ITS PRODUCTS AND EXCLUDES THE SAME. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF