Concrete Producing Systems

KingAdd GP50^®

Expansive and plasticizing grout admixture.

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Colour

Brown

Compressive strength

ASTM @ 7 days >30 MPa

Packaging

Bag

Standards

4 cited

ASTM C150-02 · ASTM C827

Overview

KingAdd GP50 is an expansive and plasticizing admixture for cementitious grout where a low water to cement ratio and positive expansion are required.

Applications

KingAdd GP50 is ideally designed for use in the following Bed plate grouting
Duct grouting
Grouting tunnel lining
Non-shrink infilling grouts
Post tensioned cables

Advantages

Non-Shrink: Gaseous expansion system compensates for plastic shrinkage and settlement in cementitious grouts
High Flow: Excellent grout fluidity at reduced water to cement ratio, for ease of placement or injection
Durability: Low water to cement ratio ensures low permeability and long term performance
Chloride free
Iron free

Technical Properties

Property	Value	Standard
Colour	Brown	—
Fresh wet density	Mix No. 1 1.9 ± 0.1 g/cm3 2.1 ± 0.1 g/	—
Mix No. 2	cm3	—
Compressive strength	ASTM @ 7 days >30 MPa	—
C109/109M-11	(without sand) >35 MPa (with sand) @ 28 days >45 MPa (without sand) >50 MPa (with sand)	—
Expansion	/: Up to 5% C827M-10	ASTM C827
Flow characteristics	ASTM < 32 sec C939-87 within 30 min from mixing. Re-mixing is needed to keep the needed flow	—
Bleeding	: Pass, no bleeding	ASTM C940
Initial setting time	ASTM: 4.5 - 5.5 hr C191	—
Chloride content	: Nil	BS5075
Compatibility	Flo-Add 1 is compatible with all types of Portland cement	—
Note	The results were obtained when OPC (complies with a with compressive strength @ 28 days > 42.5 MPa) is used. Higher compressive strength results can be achieved when OPC > 52.5 MPa is used. Where added water needs to be adjusted based on the mentioned range. It is important to conduct trials so as to choose the best source of OPC for the needed application. Compressive strength @ 1 day is under restrain. Compressive strength @ 7 & 28 days is under wet cure. PLACING AND FINISHING Enough materials should be available to achieve continuous fill and to complete the work. Pouring of the mixed grout should be started from one side only to avoid air entrapment. Areas to be grouted should be clean, sound and must me pre-wetted with clean water. The mixed grout should be placed directly after mixing. Working time will be within 30 minutes and remixing will be needed directly before the application to get the needed flow and expansion. Care should be taken to keep the unrestrained surface areas of the grout to a minimum.	ASTM C150-02