Item specification

Measured Value

Appearance

Yellow or brown powder

Content of solid                 %

≥92

Flow degree of cement paste (mm)

≥200

Diameter≥0.315mm              %

≤15

PH

7~9

Content of Na₂SO₄               %

≤20

Total alkali(Na₂O+0.685K₂O)  %

16±2

Content of Cl^-                      %

≤0.5

Item specification GB8076-1997

Unit

First Grade

Qualified Grade

Measured Value

water-reducing rate

%

≥12

≥10

19

bleeding rate

%

≤90

≤95

0

air content

%

≤3.0

≤4.0

2.6

Time difference

Of coagulation

initial coagulation

min

-90+120

+12

terminative coagulation

min

-90+120

+10

Compare of resist the press and intensity

1d

%

≥140

≥130

185

3d

%

≥130

≥120

174

7d

%

≥125

≥115

149

28d

%

≥120

≥110

129

Contraction ratio

%

≤135

123

cauterization for rebar

-----

Non

Non

content of alkali

%

-----

17.88

Cl^-

%

-----

0.063