Details
Using Dot Repair Mortar
USES:
Full and partial depth repair of concrete pavements; parking structure and bridge deck repair; industrial floors; freezer floors; new slab construction; formed concrete work; and grouting.
COMPOSITION:
Rapid Set DOT Repair Mortar is an air-entrained specialty mortar that, when combined with water, produces a high performance concrete repair material that allows for early opening of pavement repairs to traffic. Rapid Set DOT Repair Mortar is ideal for use where rapid strength, low shrinkage and high durability are desired. The development of high early strength provides conformance with CRD-C621 in only 3 hours. No Chlorides are added.
PHYSICAL PROPERTIES:
Set Time:
- Initial Set 17-minutes
- Final Set 20-minutes
Compressive Strength(psi):
- 1-hr: 3,140
- 3-hr: 3,725
- 4-hr: 4,650
- 8-hr: 5,500
Flexural:
- ASTM C-78 psi
- 4-hr: 500
- 1-day 650
- 28-day 1200
Bond Strength:
- ASTM C 882
- 24 Hours 20 Days
- 2,000-psi 2,200-psi
Freeze/Thaw:
- ASTM C 666
- 1,000 cycles (weight loss 1.07%)
- Dynamic modulus: 91%
YIELD:
Rapid Set DOT Repair Mortar is packaged in 70-lb, bags yielding approximately 0.7 cu. ft. When extended with 45 to 50 lbs. Aggregate yields approximately 0.9 cu. ft.
SURFACE PREPARATION:
Concrete repair surfaces should be clean, sound, and free from any materials that may inhibit bond such as oil, asphalt, curing compounds, acids, dirt and loose debris. Roughen surface and remove all unsound concrete. Immediately prior to placement the repair surface shall be thoroughly saturated with no standing water.
MIX & APPLY:
The use of a power driven mechanical mixer is recommended. Organize work so that all personnel and equipment are in place before mixing. Use clean Potable water and mix whole bags only. Use less water to achieve higher strengths. For cold weather applications, use warm water. For concrete repairs over ¾” thick, up to 50lbs. of 3/8” stone may be added per bag. CAUTION: Do NOT add portland cement, lime, fly ash or any other admixtures unless approved by Rapid Set.
Rapid Set DOT Repair Mortar may be troweled, floated or broom finished. Install full depth sections. Do NOT install on frozen surfaces. In all applications use a method of consolidation that eliminates air voids. To extend working time use Rapid Set SET CONTROL retarding admixture.
Cure all Rapid Set DOT Repair Mortar installations with water or an approved curing compound.