GreatWhite™ |
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GreatWhite™ is an extremely versatile, cementitious, rapid setting, structural cement specifically designed for use with volumetric, mobile concrete mixers.
It is a single component powder that is liquid activated. GreatWhite™ has 20 minutes of working time and (depending on mix design), reach compressive strengths of more than 2,300 psi within 2 hours. GreatWhite™ can be applied in ambient temperature ranges from 30 to 120 degrees Fahrenheit. GreatWhite™ finishes like traditional Portland based concrete and cleans up easily with water.
Recommended Uses
GreatWhite™ has been designed for horizontal, sloped and vertical applications providing for rapid return to service of 2-3 hours for road and bridge decks, aviation runways, parking garages, piers, columns, foundations, parking lots, marine access ramps any other replacement or new construction application where rapid early strength gains are required.
Volumetric Mixing Equipment
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 Tempera-ture 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 Strength | 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 |
| Field Adjustable Component Ratios | Improved Application Flexibilty |
Limitations
- Application surface temperatures above 120°F/49°C or below 30°F/-1°C.
- Will not bond to polymers
Unit Weight (with water, sand & aggregate)
146lb/ft3 (2338 kg/m3) with 6% Air Entrainment
156lb/ft3 (2498 kg/m3) without Air Entrainment
Setting Time
Set Times at 72°F/22°C at 2” (5 cm) material depth
Initial set: 20 - 30 minutes
Final set: 30 - 40 minutes
Volume Yield
Concrete (binder + sand + coarse agg. + H20 ) =
3.0yds3 (2.29m3 per 2,200 lb. Super Sack)
2.5ft3 (0.07m3) per 75 lb. bag)
Packaging
75 lb. Plastic Bag
2,200 lb. Super Sack
Shelf Life
1 year
Storage
Bags must be kept dry
Technical Data
Test data derived from internal CERATECH analysis and various state DOT testing labs, including CALTRANS, TXDOT
| Property | Results 4 in. x 8 in. cylinders |
TEST METHOD |
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Compressive Strengths, psi (MPa) |
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| 2 hours | 2380 (16.4) |
ASTM C 39 |
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1 day - 24 hours |
4490 (31.0) |
ASTM C 39 |
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7 days |
6770 (46.7) |
ASTM C 39 |
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28 days |
7820 (54.0) |
ASTM C 39 |
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Flexural Strength, psi (MPa) |
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| 2 hours* | >350 (2.4) |
ASTM C 78 |
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7 days |
735 (5.0) |
ASTM C 78 |
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28 days |
840 (5.8) |
ASTM C 78 |
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Splitting Tensile Strength, psi (MPa) |
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28 days |
510 (3.5) |
ASTM C 496 |
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Scaling Resistance, lbs/ft2 (kg/m2) |
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50 cycles* |
0 |
ASTM C 672 |
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Modulus of Elasticity, msi (GPa) |
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28 days* |
5.4 (37.2) |
ASTM C 469 |
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| Coefficient of Thermal Expansion, in/in/ºF | |||
| 28 days* | 4.7 |
AASHTO TP 60 |
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| Length Change, % of total length | |||
| 28 days soak / 28 days dry* | -0.0300 / -0.0100 |
ASTM C 157 |
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Rapid Freeze Thaw Resistance (Durability Factor - Retained percentage of Dynamic Modulus) |
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300 cycles* |
100% |
ASTM C 672 |
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NOTE: Performance data based on 715 lb. of cement, #67 Coarse aggregate & 5% air entrainment mix design. Strengths may be varied to meet requirements by adjusting cement ratio and slump. 1.
* Performance data derived from internal CERATECH testing.
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-96 “ Concrete 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.
Mixing Instructions
Recommended Component Ratios for Volumetric / Proportional Mixers
Component Ratios per pound of GreatWhite™
- 1.9 lbs of fine aggregate ( sand SSD, Specific Gravity = 2.64)
- 2.5 lbs of coarse aggregate ( ASTM No. 57 stone SSD, Specific Gravity = 2.68)
OR 2.24 lbs of coarse aggregate ( ASTM No. 7, 0.50” stone SSD, Specific Gravity = 2.68) - Water - Project dependant ( contact CERATECH TECHNICAL SUPPORT 1-888-341-2600)
Component Ratios per 75 pound bag of GreatWhite™
- 142 lbs of fine aggregate ( sand SSD, Specific Gravity = 2.64)
- 188 lbs of coarse aggregate ( ASTM No. 57 stone SSD, Specific Gravity = 2.68)
OR 157 lbs of coarse aggregate ( ASTM No. 7, 0.50” stone SSD, Specific Gravity = 2.72) - Water - Project dependant ( contact CERATECH TECHNICAL SUPPORT 1-888-341-2600)
Component Ratios per 2,200 lb. Super Sak of GreatWhite™
- 4180 lbs of fine aggregate ( sand SSD, Specific Gravity = 2.64)
- 5500 lbs of coarse aggregate ( ASTM No. 57 stone SSD, Specific Gravity = 2.68)
OR 4928 lbs of coarse aggregate ( ASTM No. 7, 0.50” stone SSD, Specific Gravity = 2.68) - Water - Project dependant ( contact CERATECH TECHNICAL SUPPORT 1-888-341-2600)
GreatWhite™ cement has been optimized for use with Volumetric / Proportional mixing equipment. Blend the above components per traditional Portland based concrete procedures. (ASTM C 685) Requires GreatWhiteTM Liquid Admixtures (Base & Modifier) to be metered into mix water.
Contact CERATECH Technical Support for additional information on mixing and placing GreatWhite™
Application and Finish
- For Full depth applications only
- Working times based on ambient temperature, types of aggregate and total amount of water.
- Minimum profile thickness is 1.50” (3.8 cm) when using 0.50” (1.3 cm) aggregate or 3.00”(7.6 cm) when using 1.00” (2.5 cm) aggregate. 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 2 hours for wheeled traffic and 1 hours for foot traffic after addition of water. In ambient and/or surface temperatures below 32°F/0°C, extend the loading time by 60 minutes for each 10° below 32°F/0°C.
- All previously existing joints must be re-established within 1-2 hours of final set.
- Self-curing, (Protect with blankets or equivalent in ambient temperatures below 32°F / 0°F).
- 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.
