SYUDOX® SG-413 and DSP-2508
Drying Shrinkage Reducing agent
SYUDOX® SG-413 and DSP-2508 are the liquid type dry shrinkage reducing agents (SRA) developed for mortar or concrete
✔Excellent effect of dry shrinkage reducing.
✔ Having little impact on the workability and the hardening properties.
✔ No specific performance change can be observed when existing with the expansive additives
Table 1. Typical properties of below SYUDOX® series
|
Item |
SYUDOX® SG-413 |
SYUDOX® DSP-2508 |
|
Appearance |
Colorless or yellowish liquid |
Colorless or yellowish liquid |
|
Specific Gravity [g/cm3、at 25℃] |
0.97 |
1.04 |
Depending on the application, the dosage of SYUDOX® SG-413 and DSP-2508 varies from 0.5 to 4.0wt% of the cementitious material.
(1) Mixing Proportion
(2) Testing condition
① The test pieces were molded in 40×40×160mm prisms and were demolded after 24 hours,
cured in water until the age of 7 days and kept in a room with a temperature of 20℃.
② The base length of the test piece was measured at the age of 7days.
③ The test pieces were kept in a room with a temperature of 20℃ and 60%RH
(3) Results
(1) Mixing Proportion
(2)Results (Fresh Concrete)
(3)Results (Hardening Concrete)
Drying Shrinkage Reducing agent 「SYUDOX® SG-413」
SYUDOX® SG-413 developed by NOF corporation is a drying shrinkage reducing agent for mortar or concrete.
♦ High drying shrinkage reduction power
(In the comparison with our in-line product, "DSP-2508")
SG-413 : 0.5 ～ 5.0 wt% (vs. Binder)
(1) Mixing Proportion
(2) Testing condition
① The test pieces were molded in 40×40×160mm prisms and were demolded after 24 hours.
② The base length of the test piece was measured at the age of 1day.
③ The test pieces were kept in a room with a temperature of 20℃ and 60%RH
(3) Results
(1) Mixing Proportion
(2) Testing condition
① The test pieces were molded in 100×100×400mm prisms and were demolded after 24 hours,
cured in water until the age of 7 days and kept in a room with a temperature of 20℃.
② The base length of the test piece was measured at the age of 7days.
③ The test pieces were kept in a room with a temperature of 20℃ and 60%RH
(3) Results
(Fresh concrete properties)
(Hardening properties)
Table 2. Mixture proportion of the concrete
|
W/C [%] |
s/a [%] |
C [kg/m3] |
SRA dosage [C×%] |
Superplasticizer*1 dosage [C×%] |
|
49.0 |
47.0 |
350 |
0.0～2.0 |
1.0 |
*1 Super plasticizer ; Polycarboxylic acid derivatives
W: Water C : Ordinary portland cement S : Fine aggregate G : Coarse aggregate
Figure 1．Result of dry shrinkage strain test
Table 3. Influence of SRA to mortar property (at 20 ± 2℃)
|
Item |
SRA dosage [C×%] |
Slump [cm] |
Air [%] |
Setting time [h - m] |
Compressive strength [N/mm2] |
||
|
Initial |
Final |
7days |
28days |
||||
|
Control |
0.0 |
19.5 |
4.7 |
5－15 |
7－20 |
28.7 |
37.7 |
|
SYUDOX® SG-413 |
1.0 |
21.0 |
4.1 |
5－20 |
7－50 |
26.3 |
35.9 |
|
2.0 |
20.5 |
4.4 |
5－40 |
8－10 |
25.2 |
34.4 |
|
| HANDLING | : Eliminate sources of ignition. When handling at elevated temperature, provide adequate ventilation. Avoid rough handling or dropping. |
| FIRST AID MEASURES | |
| EYE | : Immediately flush eyes with plenty of water for at least 15 minutes. Call a physician. |
| SKIN | : Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Call a physician. |
| INGESTION | : If swallowed, do not induce vomiting. Immediately give two glasses of water. Call a physician immediately. Never give anything by mouth to an unconscious person. |
- Best fit dosage of SG-413 depends on aggregate, mortar temperature and so on, try premix to give objective mortar.
- For air adjustment, simultaneous use air entraining agent or defoaming agent.
- To the best of our knowledge, although certain hazards are described herein, we cannot guarantee that these are the only hazards which exist.
| HANDLING | : Eliminate sources of ignition. When handling at elevated temperature, provide adequate ventilation. Avoid rough handling or dropping. |
| FIRST AID MEASURES | |
| EYE | : Immediately flush eyes with plenty of water for at least 15 minutes. Call a physician. |
| SKIN | : Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.Call a physician. |
| INGESTION | : If swallowed, do not induce vomiting. Immediately give two glasses of water. Call a physician immediately. Never give anything by mouth to an unconscious person. |
18 KGS NET IN A TIN CAN
200 KGS NET IN AN IRON DRUM
- Best fit dosage of DSP-2508 depends on aggregate, mortar temperature and so on, try premix to give objective mortar.
- For air adjustment, simultaneous use air entraining agent or defoaming agent.
- To the best of our knowledge, although certain hazards are described herein, we cannot guarantee that these are the only hazards which exist.
