Concrete Producing Systems

KingAdd HF50^®

Hydrogen free expansive and plasticizing grout additive.

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Colour

Brown

Fresh wet density

2.0 ± 0.1 g/cm3

Expansion

Up to 2%

Initial setting time

ASTM: 3 - 4 hr C191

Packaging

Bag

Standards

4 cited

ASTM C150-02 · ASTM C939-87

Overview

KingAdd HF50 is a hydrogen free expansive and plasticizing additive for cementitious grout. The addition of KingAdd HF50 to the cementitious mixes will produce a high flowable expansive grout; KingAdd HF50 reduces the water demand, producing high strength with low permeability and excellent bond to steel.

Applications

Duct grouting
Post tensioned cables
Pre-stressed structural elements
Where an expansive and flowable grout is required

Advantages

Non-Shrink hydrogen free expansion system to prevent steel corrosion
High Flow grout without bleeding
High bond to steel
Low permeability grout at low water cement ratio
High initial and ultimate strength
Chloride free

Technical Properties

Property	Value	Standard
Colour	Brown	—
Fresh wet density	2.0 ± 0.1 g/cm3	—
Bleeding	: Pass, no bleeding	ASTM C940
Compressive strength	ASTM > 25 MPa @ 1 day > 50	—
C109/109M-11	MPa @ 7 days > 60 MPa @ 28 days	—
Expansion	Up to 2%	—
Flow characteristics	(directly < 32 sec after mixing)	ASTM C939-87
Working time	(Re-mixing is 30 min required to achieve the needed flow directly before the application)	—
Initial setting time	ASTM: 3 - 4 hr C191	—
Chloride content	: Nil	BS5075
Compatibility	Compatible with all types of 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. Compressive strength results were obtained when 16 litre of water is used in the mix. The results were obtained when 16 litre of clean water was used for mixing. 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 during the flowability time to gain the full benefit of the expansion process. Care should be taken to keep the unrestrained surface areas of the grout to a minimum. KingAdd® HF50 Hydrogen free expansive and plasticizing grout additive.	ASTM C150-02