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1. Overview and Application

TK-PC superplasticizer, mainly used in concretes for highways, bridges, power stations, tunnels and low-grade concrete in civil construction, has many technical features like high water reduction, good cement adaptability, high fluidity, and the function to improve strength and durability as well as facilitate pumping operation.  Its indicators can meet the technical requirements of GB8076-2008.

 

2. Model and Usage

1. TK-PC1 standard type: Powder dosage 0.5-1.5%; liquid dosage 1.5-3.0%; water reducing ratio 15-22%, suitable for all types of concrete used in general construction projects.
2. TK-PC2 retarding type: powder dosage 0.5-1.5%;  liquid dosage 1.5-3.0%; water reducing ratio 15-22%, retarding setting time for more than 120 minutes at room temperature; applicable to pumping concrete during the construction of bulky structure, dams, factories, bridges and tunnels.

3. Main Performance Indicators
1. Homogeneity
Test reference standard: GB8077-2012

Test item Unit Quality indicator Test result
Standard
TK-PC1
Retarding
TK-PC2
Chloride ion content % ≤0.6 0.2 0.3
Alkali content % ≤10 5.7 6
Sodium sulfate content % ≤10.0 6 5
Mortar water reducing ratio % ≥14 ≥18 ≥18

2. Concrete Performance Indicators
Test basis: GB 8076-2008
Test item
Unit
Quality indicator
Test result
Standard
TK-PC1
Retarding
TK-PC2
Standard
TK-PC1
Retarding
TK-PC2 
Water reducing ratio
%
≥15 20 20
Atmospheric
bleeding ratio
%
≤20 0 0
Pressure bleeding ratio
%
≤90 65 70
Air content
%
≤6.0 2.8 2.7
Variation of slump
over 1h
mm
- ≤60mm - 40
Setting time difference Initial setting
min
-90~+120 >+90 -20 100
Final setting - -50 -
Compressiv 1d
%
≥140 - 156 -
3d ≥130 - 148 -
7d ≥125 140 130
28d ≥120 130 125
Compressiv
%
≤125 115 120


4. Packaging, Transportation and Storage
Powder products are packaged in the plastic-lined poly-woven bags with a capacity of 40Kg ± 0.5Kg. Liquid products are packaged in drums with a capacity of 220kg ± 1kg or stored and transported in tankers.
Powder shall be prevented from rain, moisture, and stored in a cool warehouse; its shelf life is two years; the shelf life of liquid product is six months. Any product must be tested before use if the shelf life expires.