Using Concrete Mix
USES:
CEMENT ALL is a multipurpose product that can be used for general concrete repair, doweling and anchoring, industrial grouting, formed work, airport projects, and highway repair.
COMPOSITION:
Rapid Set CONCRETE MIX is a high performance blend of Rapid Set hydraulic cement and quality aggregates. CONCRETE MIX is non-metallic and no chlorides are added. Rapid Set CONCRETE MIX is similar in appearance to portland cement concrete and may be applied using similar methods.
COLOR: [Green]
The final color of CONCRETE MIX may vary due to application techniques and environmental conditions.
LIMITATIONS:
Not intended for applications thinner than 2-in, for thin sections use Rapid Set Cement ALL or Rapid Set Mortar Mix. For applications where bonding is important, at least one test section should be prepared to evaluate the suitability of the materials and procedures.
TECHNICAL DATA:
Set Time:ASTM C-191(Mod.) at 70°F
Initial Set 15-minutes
Final Set 35-minutes
Compressive Strength:
Age:
- 1-hour* 3000-psi
- 3-hour 5000 -psi
- 1-day 6000 -psi
- 7-day 7000 -psi
- 28-day 9000-psi
Flexural Strength:
- ASTM C-78 Mod.
- ASTM C-78 Mod.
- 1-day 650-psi
- 28-day 750-psi
SURFACE PREPARATION:
Where bonding is important, the adjacent surfaces shall be clean, sound and free from any materials that may inhibit bond such as oil, asphalt, curing compounds, acids, dirt and loose debris. Roughen surfaces and remove all unsound concrete. Immediately prior to placement the repair surface shall be thoroughly saturated with no standing water.
MIXING:
The use of a power driven mechanical mixer, such as a mortar mixer or a drill mounted mixer, is recommended. Organize work so that all personnel and equipment are in place before mixing. Use clean Potable water. Rapid Set CONCRETE MIX may be mixed using 3.5 to 4.5 quarts of water per 60 lb. bag. Use less water to achieve higher strengths. For increased fluidity and workability use Rapid Set FLOW CONTROL plasticizing admixture from the Concrete Pharmacy. Place the desired quantity of mix water into the mixing container. While the mixer is running add Rapid Set CONCRETE MIX. Mix for the minimum amount of time required to achieve a lump-free, uniform consistency (usually 1 to 3 minutes). Do NOT re-temper.
PLACEMENT:
Rapid Set CONCRETE MIX may be placed using traditional methods. Organize work so that all personnel and equipment are ready before placement. Place, consolidate and screed quickly to allow for maximum finishing time. Do NOT wait for bleed water, apply final finish as soon as possible. Rapid Set CONCRETE MIX may be troweled, floated or broom finished. On flat work Do NOT install in layers, install full depth sections and progress horizontally. Do NOT install on frozen surfaces. Use a method of consolidation that eliminates air voids. To extend working time use Rapid Set SET CONTROL set retarding admixture.
CURING:
Water cure all Rapid Set CONCRETE MIX installations. Begin curing as soon as the surface has lost its moist sheen. Keep exposed surfaces wet for a minimum of 1 hour. When experiencing extended setting times, due to cold temperature or the use of retarder, longer cure times may be required. The objective of water curing shall be to maintain a continuously wet surface until the product has achieved sufficient strength.
TEMPERATURE:
Warm environmental and materials temperatures will reduce the working time of CONCRETE MIX. To compensate for warm temperatures, keep material cool and use chilled mix water. Temperatures below 70ºF (21ºC) will decrease the rate of strength gain and CONCRETE MIX should not be applied if surface or ambient temperature is below 45ºF (7.2ºC).
CAUTION:
CONCRETE MIX contains cement-itious materials and may cause irritation to lungs, eyes and skin. Avoid contact. Use only in adequate ventilation. Do NOT breath dust. Wet mixture may cause burns. Wear suitable gloves, eye protection and protective clothing. In case of skin contact, wash thoroughly with soap and water. In case of eye contact, flush immediately and repeatedly with large quantities of water and get prompt medical attention. In case of difficulty breathing, remove person to fresh air. If difficulty breathing persists, seek medical attention.