SikaCem Summer Extender is a precision-engineered additive designed specifically for rapid hardening cementitious mortars operating in challenging hot weather conditions. This specialized powder additive addresses the critical issue of reduced working time that occurs when ambient and substrate temperatures rise between 75-100°F (24-38°C). By seamlessly integrating with leading rapid hardening mortars like SikaQuick-1000, SikaQuick-2500, SikaQuick VOH, SikaQuick-800, and Sikacrete 421-CI Rapid, it extends application time by approximately 15 minutes while maintaining the original workability and compressive strength development characteristics that contractors depend on.
This non-chloride based technology eliminates the common frustrations associated with summer concrete repair projects, where accelerated setting times can compromise application quality and increase material waste. The additive dissolves completely in clean, cool mixing water and requires no special equipment or complex mixing procedures, making it an essential tool for maintaining project schedules during peak construction season. With its proven ability to preserve the mechanical properties of rapid hardening mortars while providing crucial additional working time, SikaCem Summer Extender enables contractors to execute precision repairs even under demanding thermal conditions.
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Key Features of SikaCem Summer Extender
Extended Working Time
Increases typical application time by approximately 15 minutes for rapid hardening mortars in hot weather conditions from 75-100°F, providing crucial flexibility for proper placement and finishing.
Preserved Strength Development
Maintains original compressive strength characteristics of the base mortar system without compromising long-term performance or structural integrity.
Non-Chloride Technology
Utilizes advanced chemistry that extends working time without introducing corrosive chloride ions that could damage reinforcing steel or compromise concrete durability.
Simple Integration
Dissolves completely in clean, cool mixing water with basic stirring, requiring no special equipment or complex mixing procedures for field application.
Broad Compatibility
Works seamlessly with major Sika rapid hardening mortar systems including SikaQuick-1000, SikaQuick-2500, SikaQuick VOH, SikaQuick-800, and Sikacrete 421-CI Rapid.
Temperature-Responsive Dosing
Provides precise dosage recommendations based on actual ambient and substrate temperatures, optimizing performance for specific job site conditions.
Recommended Applications of SikaCem Summer Extender
SikaCem Summer Extender is engineered for construction professionals managing concrete repair projects during hot weather conditions where standard rapid hardening mortars experience accelerated setting times. Its temperature-responsive formulation makes it particularly valuable for maintaining consistent application procedures and quality standards during summer construction seasons when ambient and substrate temperatures challenge normal working parameters.
Ideal Applications Include:
- Structural concrete repairs in hot weather conditions
- Bridge deck and infrastructure rehabilitation during summer months
- Industrial floor repairs and resurfacing projects
- Precast concrete element repairs in elevated temperatures
- Emergency repair applications requiring extended working time
- High-temperature substrate repairs on sun-exposed surfaces
- Commercial concrete restoration projects in warm climates
Technical Specifications – SikaCem Summer Extender
Summer additive for rapid hardening, cementitious repair mortars extending working time in hot weather applications. For professional use only.
+15 Minutes Working Time Extension
75-100°F Operating Range
Non-Chloride Technology
10 lb Pail with Measuring Cup
Easy to Use – Add to Cool Water
Non-Chloride Based Technology
Add to Clean, Cool Water
Professional Use Only
Frequently Asked Questions
What temperature conditions require SikaCem Summer Extender?
Use when ambient and substrate temperatures range from 75-100°F (24-38°C). The additive is specifically designed for these conditions where rapid hardening mortars experience shortened working times.
How much working time extension can I expect?
SikaCem Summer Extender typically extends working time by approximately 15 minutes beyond the normal application time of the base mortar system, depending on actual temperature conditions.
What is the proper dosage for different temperature ranges?
For temperatures 75-85°F (24-29°C), use 1/2 cup per bag of mortar. For temperatures 85-100°F (29-38°C), use 1 full cup per bag. One level cup equals 7.8 ounces (220 grams) by weight.
Does the additive affect the final strength of the mortar?
No, SikaCem Summer Extender is formulated to extend working time without affecting workability or compressive strength development of the base mortar system.
How should the additive be stored and what is its shelf life?
Store in cool, dry, well-ventilated conditions at 40-95°F (4-35°C), protected from moisture. The shelf life is 12 months from production date in original, unopened packaging.
Can SikaCem Summer Extender be used as a standalone product?
No, it cannot be used alone and must be combined with compatible rapid hardening cementitious mortars. It requires the base mortar system to function properly.
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