【正文】 ......................................................................................................... 12 試驗原材料 ....................................................................................................... 12 主要原料 ................................................................................................. 12 摻合料 — 粉煤灰 ...................................................................................... 12 化學(xué)外加劑 —緩凝劑 ............................................................................... 13 水 ........................................................................................................... 13 實驗儀器及性能測 試 ......................................................................................... 13 試驗方法 .......................................................................................................... 14 基本物料配合比擬定 ................................................................................ 14 自流平砂漿的制備 ................................................................................... 15 試件的養(yǎng)護 ............................................................................................. 16 自流平砂漿性能測試 ............................................................................... 16 砂漿微觀表征 .......................................................................................... 20 3 脫硫石膏自流平砂漿性能研究 ................................................................................... 21 化學(xué)外加劑對自流平砂漿性能的影響 ................................................................ 21 緩凝劑摻量對自流平砂漿性能的影響 ....................................................... 22 礦物摻合料對自流平砂漿性能的影響 ................................................................ 24 普通硅酸鹽水泥水化機理 .............................................. 錯誤 !未定義書簽。 2 ℃ , relative humidity 60%) 10d at 45 ℃ oven 24h. Key words: FGD gypsum。另外對砂漿性能有較大影響的是養(yǎng)護方法， 本文確定的養(yǎng)護方法如下： 24h 脫 模 ? 自然環(huán)境（溫度： 20℃ ?2℃，相對濕度 ?60%） 24h? 快速養(yǎng)護箱（溫度： 60℃ ?1℃，相對濕度 ?90%）養(yǎng)護 24h? 自然環(huán)境（溫度： 20℃ ?2℃，相對濕度 ?60%） 10d?置于 45℃烘箱 24h。 本課題 研究了利用脫硫石膏制備自流平砂漿的相關(guān)技術(shù)。 I 脫硫石膏自流平砂漿的試驗研究 摘要 脫硫石膏又稱排煙脫硫石膏、硫石膏或 FGD 石膏，是對含硫燃料（主要是煤）燃燒后產(chǎn)生的煙氣進行脫硫凈化處理而得到的工業(yè)副產(chǎn)石膏。在滿足石膏基自流平砂漿國標(biāo) JC/T10232020 的要求下，確定脫硫石膏、粉煤灰、硫鋁酸鹽水泥、普通 硅酸鹽水泥之間的基本配比，通過研究緩凝劑摻量對自流平砂漿性能（初始流動度用水、 30min 流動度損失、凝結(jié)時間、抗折強度、抗壓強度、拉伸粘結(jié)強度、收縮率等）的影響，確定合適的摻率。 關(guān)鍵字 ：脫硫石膏；自流平砂漿；緩凝劑；力學(xué)性能；流變性能 IIExperimental study of FGD gypsum leveling mortar Abstract Flue gas desulphurization gypsum and FGD gypsum, sulfur and gypsum and FGD gypsum, is a sulfurcontaining fuels (mainly coal) postbustion flue gas desulphurization and purification process resulting from industrial byproduct gypsum. Them in the past have often been regarded as a casual openair waste stack or it will be filled out, not for the second time in a timely and effective manner, serious pollution of the atmospheric environment, waste of land resources, destruction of ecological balance, but also damage human health. Therefore, it is necessary for the development and utilization of desulphurization gypsum. This research study on desulphurization gypsum application in selfleveling mortar, preparation of gypsum based upon yourselves to materials. Meet under the requirements of national standard JC/T10232020 of gypsum based selfleveling mortar, determining desulphurization gypsum and fly ash and sulfur aluminates cement, Portland cement between the proportion of basic, through the research of retarder fly on the properties (the initial flow of water, 30min fluidity loss, condensed time, breaking strength, pressive strength, tensile bond strength, shrink ratio, etc.)of selfleveling mortar effect of, determine the appropriate rate of mixed. In addition research on curing system on the desulphurization performance of selfleveling mortar plaster effects. Test results showed that: retarders and mineral admixtures on the properties of gypsum based selfleveling mortar more, this article uses potassium citrate as a retarder, mixed in % to % would be appropriate for you, use of fly ash as admixture, studies have shown that when the content is 25%~30% range of selfleveling mortar fluidity and mechanical properties of the best, in addition there is a performance of the mortar is a relatively large impact conservation methods, in this document to determine if conservation methods are as follows: 24h release the natural environment (temperature: 20℃177。 selfleveling mortar。 普通硅酸鹽水泥摻量對自流平砂漿性能的影響 .......................................... 24 硫鋁酸鹽水泥水化機理 ............................................................................. 25 硫鋁酸鹽水泥摻量對自流平砂漿性能的影響 ............................................. 26 粉煤灰摻量對自流平砂漿性能的影響 ........................................................ 27 脫硫石膏摻量對自流平砂漿性能的影響 .................................................... 28 攪拌方式對自流平砂漿性能的影響 .................................................................... 30 養(yǎng)護條件對自流平砂漿凝結(jié)時間的影響 ............................................................. 31 養(yǎng)護條件對砂漿力學(xué)性能的影響 ....................................................................... 31 4 試驗結(jié)果與分析 ........................................................................................................ 33 結(jié)果分析 .......................................................................................................... 33 XRD 分析 ................................................................................................ 33 5 結(jié)論與展望 ............................................................................................................... 36 結(jié)論 ................................................................................................................. 36 展望 ................................................................................................................. 37 致謝 .