本文關(guān)鍵詞：硫鋁酸鹽水泥基防水砂漿的制備及性能研究　出處：《濟(jì)南大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 硫鋁酸鹽水泥 防水砂漿 摻合料 聚合物 人工砂

【摘要】：硫鋁酸鹽水泥具有早強(qiáng)、高強(qiáng)等特點(diǎn)，因此被廣泛應(yīng)用于水工工程和快速修補(bǔ)工程等特殊建筑工程領(lǐng)域。雖然硫鋁酸鹽水泥較普通硅酸鹽水泥具有許多優(yōu)良的性能，比較適合應(yīng)用于防水領(lǐng)域，但僅以硫鋁酸鹽水泥制備的普通防水砂漿還有許多缺點(diǎn)，因此本課題做了若干改性探索，旨在制備出強(qiáng)度達(dá)標(biāo)、抗?jié)B壓強(qiáng)優(yōu)越的新型硫鋁酸鹽水泥防水砂漿。研究結(jié)果如下： （1）研究了萘系減水劑、脂肪族減水劑及有機(jī)硅憎水劑三種不同組分對(duì)硫鋁酸鹽水泥防水砂漿強(qiáng)度和抗?jié)B壓強(qiáng)的影響發(fā)現(xiàn)，有機(jī)硅憎水劑對(duì)硫鋁酸鹽水泥防水砂漿的強(qiáng)度和抗?jié)B壓強(qiáng)的影響遠(yuǎn)大于萘系減水劑和脂肪族減水劑，而萘系減水劑和脂肪族減水劑對(duì)硫鋁酸鹽水泥防水砂漿強(qiáng)度和抗?jié)B壓強(qiáng)的影響區(qū)別不大。有機(jī)硅減水劑的合理?yè)搅繛?.2％，當(dāng)其摻入量超過0.2％將會(huì)降低硫鋁酸鹽水泥防水砂漿的強(qiáng)度和抗?jié)B壓強(qiáng)。 （2）采用摻合料復(fù)摻的方式，探索了粉煤灰、礦渣及硅灰兩兩以不同比例搭配對(duì)硫鋁酸鹽水泥防水砂漿力學(xué)性能、抗?jié)B壓強(qiáng)及硬化漿體微觀結(jié)構(gòu)的影響。研究結(jié)果表明，摻合料的摻入會(huì)明顯降低硫鋁酸鹽水泥砂漿的早期強(qiáng)度，，但對(duì)后期強(qiáng)度影響不大，以礦渣：硅灰為4:1時(shí)中后期強(qiáng)度發(fā)揮最好。在抗?jié)B性方面，以粉煤灰：礦渣為3:2時(shí)抗?jié)B性能最差，而粉煤灰：硅灰為3:2時(shí)相對(duì)較好。綜合各種性能，摻合料的搭配以礦渣：硅灰為4:1為最佳配比。 （3）探索了可再分散乳膠粉和纖維素醚單摻對(duì)硫鋁酸鹽水泥防水砂漿力學(xué)性能、吸水率及抗?jié)B性能的影響。結(jié)果表明，在強(qiáng)度方面，這兩種聚合物的摻入雖會(huì)降低早期強(qiáng)度，但對(duì)后期強(qiáng)度并無(wú)多大影響。在吸水率方面，兩種聚合物的摻入都會(huì)明顯降低硫鋁酸鹽水泥砂漿的吸水率，且纖維素醚略優(yōu)于可再分散乳膠粉。在抗?jié)B性能方面，纖維素醚遠(yuǎn)優(yōu)于可再分散乳膠粉，尤其是當(dāng)摻量達(dá)到1.5‰以上時(shí)，硫鋁酸鹽水泥砂漿的抗?jié)B壓強(qiáng)能達(dá)到2.2MPa以上而仍未透水。因此，以河砂為骨料的硫鋁酸鹽基防水砂漿的優(yōu)化配比為：水泥17.5％、礦渣4.5％、硅灰3.0％、骨料75％，外摻萘系減水劑、有機(jī)硅憎水劑、生石灰、纖維素醚分別占膠凝材料總量的1.0％、0.2％、1.0％、2.0％，其力學(xué)強(qiáng)度達(dá)到JC/T984-2005聚合物水泥防水砂漿的要求，抗?jié)B性能大大超過了JC/T984-2005的指標(biāo)要求。 （4）探索了人工砂的顆粒級(jí)配對(duì)硫鋁酸鹽水泥防水砂漿的強(qiáng)度、吸水率、稠度及抗?jié)B壓強(qiáng)都有很大的影響，合理的粗中細(xì)砂搭配不僅可以增加砂漿的強(qiáng)度、減少砂漿的吸水率，而且還能改善砂漿的稠度和防水性能。其優(yōu)化實(shí)驗(yàn)配比為：粗砂：中砂：細(xì)砂為0:1:1，摻合料占膠凝材料量為15％，纖維素醚占膠凝材料量為1.75‰。制備的防水砂漿1d抗折強(qiáng)度達(dá)5.6MPa，抗壓強(qiáng)度22.8MPa；28d抗折強(qiáng)度6.7MPa，抗壓強(qiáng)度34.1MPa；稠度為79mm，7d抗?jié)B壓強(qiáng)為在2.2MPa恒壓1h后滲透高度僅11mm，其力學(xué)強(qiáng)度達(dá)到JC/T984-2005聚合物水泥防水砂漿的要求，抗?jié)B性能大大超過了JC/T984-2005的指標(biāo)要求。
[Abstract]:Sulphoaluminate cement with early strength, high strength and other characteristics, so it is widely used in hydraulic engineering and rapid repair engineering special field of architectural engineering. Although the sulphoaluminate cement than Portland cement has many excellent properties and is suitable for the application in the field of water, but there are many shortcomings only in sulphoaluminate cement prepared by ordinary waterproof mortar, so this issue made some modification to explore, in order to prepare qualified strength, impermeability pressure superior new sulphoaluminate cement waterproof mortar. The results are as follows:
(1) of naphthalene superplasticizer, aliphatic superplasticizer and silicone hydrophober three different components of sulphoaluminate cement waterproofing mortar strength and impermeability pressure found impact strength of silicone hydrophober sulphoaluminate cement mortar waterproof and seepage pressure is larger than the effect of naphthalene superplasticizer and aliphatic superplasticizer however, naphthalene superplasticizer and aliphatic superplasticizer on sulphoaluminate cement waterproofing mortar strength and impermeability pressure difference. The influence of reasonable dosage of silicone superplasticizer is 0.2%, when the doping amount of more than 0.2% will reduce the sulphoaluminate cement waterproofing mortar strength and impermeability pressure.
(2) the mineral admixtures way, explore the fly ash, slag and silica fume on the performance of 22 with different proportion of collocation of sulphoaluminate cement waterproof mortar impermeability mechanics, pressure and the influence of microstructure of hardened paste. The results show that the admixture incorporation will significantly reduce the early strength sulphoaluminate cement mortar, but little influence on the later strength of 4:1 slag: silica fume in the late strength to play the best. In impermeability, fly ash slag is 3:2 the worst anti permeability performance, and fly ash: silica fume is 3:2 relatively better. The comprehensive performance of admixture in collocation slag: silica fume is 4:1 for the best ratio.
(3) to explore the redispersible emulsion powder and cellulose ether doped on sulphoaluminate cement waterproofing mortar mechanical properties, water absorption and anti permeability effect. The results show that in terms of strength, the two kinds of polymer incorporation may decrease the early strength, but the later strength has no influence on water. Rate, two kinds of polymer incorporation will significantly reduce the water absorption rate of sulphoaluminate cement mortar, and the cellulose ether is slightly better than that of redispersible latex powder. In impermeability, cellulose ether is much better than that of redispersible emulsion powder, especially when the content reaches 1.5 or more, the impermeability pressure can reach 2.2MPa had not yet permeable sulphoaluminate cement mortar. Therefore, the river sand in order to optimize the ratio of acid base sulfur aluminum waterproof mortar aggregate for cement slag: 17.5%, 4.5%, 3% and 75% silica fume, aggregate, admixture of naphthalene superplasticizer, silicone hydrophober, students Lime and cellulose ether account for 1%, 0.2%, 1% and 2% of the total cementitious material, respectively, and their mechanical strength reaches the requirement of JC/T984-2005 polymer cement waterproofing mortar, and its permeability is much higher than that of JC/T984-2005.
(4) to explore the strength, the particle size of artificial sand pairing sulphoaluminate cement waterproof mortar water absorption, consistency and anti permeability has great effect on pressure, coarse sand and reasonable collocation can not only increase the strength of cement mortar, reduce the water absorption of mortar, but also can improve the consistency and performance of waterproof mortar. The optimization experiment ratio: coarse sand: Sand: fine sand is 0:1:1, admixture total cementitious material content is 15%, cellulose ether total cementitious material was 1.75 per thousand. The preparation of waterproof mortar 1D flexural strength of 5.6MPa, the compressive strength of 22.8MPa 28d 6.7MPa; flexural strength, compressive strength 34.1MPa; consistency is 79mm, 7d impermeability pressure penetration height of only 11mm in the 2.2MPa 1h after the constant pressure reaches JC/T984-2005, the mechanical strength of polymer cement waterproof mortar, impermeability greatly exceed the requirements of JC/T984-2005 index.

【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TQ177.62

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙維;李東旭;李清海;;聚合物改性砂漿綜述[J];材料導(dǎo)報(bào);2010年11期

2 張德成;肖傳明;張?jiān)骑w;程新;;外加劑對(duì)硫鋁酸鹽水泥的影響[J];硅酸鹽通報(bào);2007年04期

3 季韜;劉春蘋;林旭健;梁詠寧;;機(jī)制砂率和石粉對(duì)人工砂砂漿抗?jié)B性能的影響[J];福州大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年03期

4 王幼云;中國(guó)硅酸鹽學(xué)會(huì)代表團(tuán)參加第三屆聚合物混凝土國(guó)際會(huì)議[J];硅酸鹽學(xué)報(bào);1981年03期

5 石建屏;李新;呂淑珍;王海濱;;中國(guó)水泥工業(yè)CO_2排放現(xiàn)狀及減排對(duì)策[J];環(huán)境科學(xué)學(xué)報(bào);2012年08期

6 邊福超;;預(yù)拌砂漿在建筑工程中的使用[J];科技傳播;2013年12期

7 李軍偉;聚合物改性瀝青防水卷材情況簡(jiǎn)介[J];石油瀝青;2005年02期

8 侯文萍,付興華,黃世峰,呂小平,孟憲春;外加劑在硫鋁酸鹽水泥系統(tǒng)中的作用[J];濟(jì)南大學(xué)學(xué)報(bào)(自然科學(xué)版);2002年01期

9 林寶玉;莊英豪;盧安琪;許長(zhǎng)明;;丙烯酸酯共聚乳液水泥砂漿的研究與應(yīng)用[J];水利水運(yùn)科學(xué)研究;1981年01期

10 張丕興;;硫鋁酸鹽水泥的理化分析研究[J];水泥工程;2009年03期

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