KingAdd GS50®
High range water reducing superplasticiser admixture and dispersing agent for cementitious grouts.
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
Overview
KingAdd GS50 is superplasticising admixture formulated from selected polymers specially designed to enable the water content of the cementitious grout to perform more effectively. This effect can be used to improve workability, to increase ultimate strengths. It has also stabilizing agent to reduce bleeding and segregation in cementitious grout.
Where to use
- High flow cementitious grout application.
- To accelerate early strength development.
- To produce high quality cementitious grout of improved durability and water tightness.
- Prestressed and post tensioned grouting.
- For dispersing cements and micro cements in injection applications.
Why use it
- High strength increase with same cement content.
- Minimizing segregation and bleeding problems by improving cohesion.
- More durable grout as a result of reduction in permeability and lower water to cement ratio.
- Chloride free.
COMPATIBILITY
KingAdd GS50 can be used with all types of cement and cement replacement materials. KingAdd GS50 is compatible with other KINGKRETE admixtures used in the same mix.
Technical properties
| Colour | Brown liquid |
|---|---|
| Freezing point | ≈ -2°C |
| Specific gravity | 1.20 ± 0.01 |
| Chloride content BS5075 | Nil |
| Air entrainment | Typically less than 2% additional air is entrained above control mix at normal dosages |
SETTING TIME
Although the setting time is dependent on the dosage of KingAdd GS50, the following factors should be considered:
- Retardation is increased with lower levels of tri- calcium in the cement.
- Lower temperatures will delay the setting time.
- SRC cement gives higher retardation levels than ordinary cement.
- Using more than one type of admixture in the same mix could affect the setting time.
- Retardation level is increased when
- cement replacement materials are used in the grout mix.
How to use
Method of use
KingAdd GS50 should be added to the mixed cementitious grout (water + Bentonite slurry + cement) to achieve optimum performance.
DOSAGE
The guidance dosage of KingAdd GS50 is 1.00 - 3.00 litre/100 kg of cementitious materials in the mix, including GGBFS, PFA or micro-silica.
Representative trials should be conducted to determine the optimum dosage of KingAdd GS50 to meet the performance requirements by using the materials and conditions in actual use.
Cleaning
KingAdd GS50 can be washed with fresh cold water.
Coverage, packaging and storage
Packaging
KingAdd GS50 is available in 25 litre pails, 210 litre drums and 1000 litre bulks supply.
Storage
Shelf life is 1 year when stored under cover, out of direct sunlight and protected from extremes of temperature.
Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult KingKrete's Technical Services Department.
Health and safety
As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs. Treat splashes to eyes and skin immediately. If accidentally ingested, seek medical attention. Reseal containers after use. Use in well ventilated areas and avoid inhalation.