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Freezing and Thawing Resistance Test

Freezing and Thawing Resistance Test:

100 × 100 × 400 (mm) prismatic specimen using, "5 ~ -18" to" -18 ~ 5" to be 1 cycle, and it went by 300 cycles.
The specimen is about, after 28 days curing in water, and air curing.
Ordinary concrete, conduct a 16-week air curing, and SWcon24,40 , conduct a 12-week air curing.
SWScon 80,100, tested after curing in water.
Mixing are shown in Table 1.
Figure shows the Freeze-thaw test results.

Table for Mixing Design :

Mixing name

Design standard strength

W/B

Use mixture material

Ordinary concrete

24 N/mm2

54%

-

Ordinary concrete

40 N/mm2

40%

-

SW con

24 N/mm2

50%

Blast-furnace slag 4,000.(sw)SILICA WHITE : Specific surface 14,000cm2/g

SW con

40 N/mm2

40%

Blast-furnace slag 4,000.(sw)SILICA WHITE : Specific surface 14,000cm2/g

SWS con

80 N/mm2

25%

Blast-furnace slag 6,000.(sws)SILICA WHITE-S : Specific surface 60,000cm2/g

SWS con

100 N/mm2

20%

Blast-furnace slag 6,000.(sws)SILICA WHITE-S : Specific surface 60,000cm2/g

From the graph it is clear that with use of silica cement admixture concrete has high ability to resist freezing and thawing. Mainly on Blast-furnace slag 6,000.(sws)SILICA WHITE-S : Specific surface 60,000cm2/g, Freeze and thaw is almost constant  and lower on other concrete samples which shows that freeze and thaw does not affect on concrete with use of silica cement admixture.