1. BFW – 400
(Slump Retention Type Superplasticizer)
Introduction
BFW – 400 is an acrylic acid type polycarboxylate based superplasticizer, which can display high
Dispersion performance and slump retention time due to steric and electrostatic repulsion effects,
which are part of polymer structures.
In addition, its excellent dispersion Retention time makes it possible to Transport long
distance, adjust hardening Time, and manufacture excellent quality concrete suitable for
construction sites.
Advantages
1. Prevents slump loss of high strength concrete.
2. Reduces the quantity of cement used and bleeding.
3. Improves workability.
4. Decreases heat of hydration and makes it possible to adjust cement setting and harding time
5. Makes it possible to transport long distances for a long period of time.
Suitable for ready-mix concrete.
Applications
1. Bridges, high buildings and structures that require durability and high strength.
2. SOC structures including LNG bases, high/subways, construction and tunnels.
3. Concrete with high contents of fly ash, blast furnace slag or silica fume.
4. Manufacture of prefabricated, precast and prestressed concrete.
5. Manufacture of self-leveling concrete.
Item Specification Remark
Appearance Brownish liquid Visual
Solid Content(%) 40.0 ± 0.5 105oC, 2 hr
pH 7 ± 1.0 pH meter
Viscosity 250 ± 100 25 oC, cps
Specific gravity 1.10 ± 0.05 25 oC
Specifications

2. Test Result
1. Concrete Test
• Raw material
Class Cement(C) Sand(S) Gravel(G)
Specific Gravity 3.15 2.60 2.61
Comment
Ordinary Portland
Cement Type 1
Washed Sand
25 mm Crushed
Stone
• Mix Design of Concrete
W/C
(%)
S/A
(%)
Unit Weight (kg/m3) AD (CX%)
20%W C S G
36.0 40.0 162 450 692 1038 1.0
• Test Results
Class
Solid Content
(%)
0 Min.
Flow (cm)
30 Min.
Flow (cm)
60 Min.
Flow (cm)
BFW-400
(B&B)
40.4 36 42 43
Product A 40.5 36 37 37
Product B 43.8 41 40 35
0 Min.
Slump (cm)
30 Min.
Slump (cm)
60 Min.
Slump (cm)
3 day
(kg/cm2)
7 day
(kg/cm2)
22 23.5 24 247 379
22 23 23 247 377
22.5 23 22 246 365
BFW – 400
(Slump Retention Type Superplasticizer)

3. 2. Mortar Test
W C S AD(CX%)
185 g 520 g 734 g 1.0
S : Korea Standards Sand (K.S.L 5100)
• Mortar Test Results
0 Min. 30 Min. 60 Min. 90 Min.
135–145 mm 150-160 mm 150-160 mm 150 mm
Experiment Tool : Mortar Mixer (HJ-1150), Mix Container (HJ-1152)
Cone Mold (HJ-1113), Mortar Flow tester (HJ-1160)
• Mix design
Packing
 21 MT Flexi Tank / 220 kg Drum / 1.1 MT IBC Tank
Caution
Do not allow product to freeze or be stored in temperature below Freezing.
If freezing occurs, contact the manufacturer representative.
Guidance
 Normally it can be used with 0.45 to 0.25 wt% of the cement.
The best formulation should be made on site after completing enough tests
 It can be used with sodium-based lignin admixture and inorganic
accelerating hardening agent
Technical Services
B&B’s professional technicial service staff gives a definite answer to your
technicial questions and technicial assistance.
Tel : 031-377-7833 Fax : 031-376-9786 E-mail : visualst@naver.com
BFW – 400
(Slump Retention Type Superplasticizer)