本研究為探討不同石膏含量之SSC 超硫酸鹽混凝土，試驗變數包含三種
水膠比(W/B=0.35、0.40、0.45)、四種齡期(7、28、56、91 天)、FGD 排煙脫硫
石膏含量(14、24、34 wt %)、OPC 卜特蘭第一型水泥(1 wt %)，並與對照組
OPC 進行比較，也針對兩種養護方式(石灰水與硫酸鈉)之新拌性質(坍度、單
位重、凝結時間)、硬固性質(抗壓及劈裂強度、彈性模數、卜松比、重量變化、
超音波波速、熱傳導係數、長度變化、電阻抗)，作為互相比較之依據。
研究結果顯示:(1)當水膠比固定FGD 石膏重量百分比14 增加34 %時，
SSC 混凝土單位重2384 下降2354 ??/?3降低1.25 %，終凝時間429 提升1336
分鐘延長211 %，坍度35 下降18 毫米降低49 %，嚴重缺乏工作性。(2)當水
膠比固定FGD 石膏重量百分比14 增加34 %時，SSC 混凝土石灰水養護之91
天抗壓強度63 下降54 MPa 降低約14 %。當養護條件為硫酸鈉侵蝕時，SSC
混凝土早期強度高於石灰水養護之SSC 混凝土，7 天抗壓強度24 提升35 MPa
約47 %，但在91 天後，硫酸鈉侵蝕之SSC 強度開始略低於養護石灰水強度。
(3)當水膠比固定FGD 石膏重量百分比14 增加34 %時，SSC 混凝石灰水養護
之91天長度變化0.0229提升0.0453 ??⁄?增加約98 %。當養護條件為硫酸鈉
侵蝕時，SSC 混凝土水膠比0.4 石膏含量14 %之配比，長度變化低於OPC 混
凝土，91天長度變化0.0107提升0.0440 ??⁄?增加約311 %。

The test variables include three water-to-binder ratios (W/B=0.35, 0.40, 0.45),
four ages (7, 28, 56, 91 days), and FGD gypsum content (14, 24, 34 wt%), Portland
first type cement (1 wt%), and compare it with the control group OPC. It also aims at
the fersh properties (slump, unit weight, setting time) and hardness properties
(compressive strength, splitting strength, youngs modulus, poissons ratio, weight
change, ultrasonic pulse velocity, thermal conductivity, shrinkage, electrical
resistivity), of the two curing methods (lime water curing and sodium sulfate attack).
as a basis for comparison.
The results of the study show that: (1) When the weight ratio of water-binder to
fixed FGD gypsum is increased 14 by 34 %, the unit weight of SSC concrete
decreases from 2384 to 2354 Kg/m3 The decreases is about 1.25 %.the final setting
time 429 increases by 1336 minutes The increase is about 211 %. The slump decreases
from 35 to 18 millimeters The decreases are about 49 %. has bad workability. (2)
When the weight ratio of water-binder to fixed FGD gypsum is increased 14 by 34
%, the 91-day compressive strength of SSC concrete lime water curing 63 decreased
by 54 MPa and decreased by about 14%. When the curing condition is sodium sulfate
attack, the early strength of SSC concrete is higher than that of lime water cured SSC
concrete. The 7-day compressive strength 24 increases by 35 MPa The increases is
about 47 %, but after 91 days, the sodium sulfate attack SSC strength begins to be
slightly lower for curing lime water strength. (3) When the weight ratio of water binder to fixed FGD gypsum is increased 14 by 34%, the 91-day length Change of
SSC concrete lime water curing is increased 0.0229 by 0.0453 ??⁄? The increase
is about 98%. When the curing condition is sodium sulfate attack, the ratio of SSC
concrete water binder to 0.4 gypsum content is 14%, the length Change is lower than
OPC concrete, the 91-day length Change is 0.0107 increased by 0.0440 ??⁄?
increased by about 311%.

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