本文選題：堿渣 + 液塑限�。� 參考：《河北工業(yè)大學(xué)》2015年碩士論文

【摘要】：堿渣是氨堿法生產(chǎn)純堿過程中產(chǎn)生的工業(yè)廢棄物,嚴重制約經(jīng)濟發(fā)展,危害環(huán)境。為了對堿渣進行綜合利用,本文將堿渣與粉煤灰按相應(yīng)比例拌合形成堿渣土,探討路堤填墊的可行性。通過室內(nèi)試驗,文章對堿渣土的物理指標,力學(xué)指標和微觀結(jié)構(gòu)進行了檢測分析。主要研究成果如下:(1)通過室內(nèi)試驗,文章對堿渣土的物理指標進行了檢測,分別從界限含水率,顆分,擊實三方面討論了不同配比情況下堿渣土的相關(guān)性質(zhì)。選出了路堤填墊中的堿渣土的最佳配比,即堿渣與粉煤灰的比例為4:1。(2)通過室內(nèi)試驗,本文進一步對堿渣土的力學(xué)性能做了研究。對堿渣土的抗壓強度,剪切強度進行了測定。為了進一步提高力學(xué)性能,在堿渣土中加入膠凝材料,堿渣土力學(xué)性能提升明顯。膠凝材料含量為堿渣土5%時經(jīng)濟適用。對堿渣土的承載力指標,回彈模量和加州承載比進行試驗,結(jié)果符合國家高速公路規(guī)范。驗證了堿渣土用于高速公路路堤的可行性(3)借助高倍顯微鏡對堿渣土微觀結(jié)構(gòu)進行觀察,隨著元明粉含量升高,堿渣土顆粒趨于緊密,膠結(jié)力增強,土體密實度增加,無側(cè)限抗壓強度增強。粉煤灰在堿性環(huán)境激發(fā)下生成膠體增多,規(guī)則性較好。通過IPP軟件,對堿渣土微觀孔隙進行了測量。堿渣土孔隙的等效直徑、面積、周長隨著元明粉含量的增加而逐漸減小,孔隙的圓度呈現(xiàn)先增大后減小的趨勢。
[Abstract]:Alkali residue is an industrial waste produced in the production of soda by ammonia alkali process, which seriously restricts the economic development and endangers the environment.In order to make comprehensive use of alkali slag, the alkali residue was mixed with fly ash in proportion to form alkali residue, and the feasibility of embankment filling was discussed.Through laboratory test, the physical index, mechanical index and microstructure of alkali residue were tested and analyzed.The main research results are as follows: (1) through laboratory tests, the physical indexes of alkali residue are tested, and the related properties of alkali residue under different proportions are discussed from three aspects: limit water content, grain fraction and compaction.The optimum ratio of alkali residue in embankment filling is chosen, that is, the ratio of alkali slag to fly ash is 4: 1.2) through laboratory tests, the mechanical properties of alkali residue are further studied in this paper.The compressive strength and shear strength of alkali residue were measured.In order to further improve the mechanical properties, the mechanical properties of alkali residuals were improved obviously by adding cementitious materials to alkali residuals.The cementitious material content is the alkali residue soil 5 times economy is suitable.The bearing capacity index, modulus of resilience and California bearing ratio of alkali residue are tested, and the results are in accordance with the national highway code.The feasibility of using alkali residue soil in expressway embankment is verified. The microstructure of alkali residue soil is observed by high power microscope. With the increase of powder content, the grain size of alkali residue soil tends to close, the cementation force increases, and the soil compactness increases.The unconfined compressive strength is enhanced.Under the excitation of alkaline environment, fly ash produces more colloids, which is more regular.The micropore of alkali residue was measured by IPP software.The equivalent diameter, area and circumference of the pores of alkali residue soil gradually decrease with the increase of the content of powder, and the roundness of the pores increases first and then decreases.
【學(xué)位授予單位】：河北工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U414

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相關(guān)期刊論文 前2條

1 袁霄梅;張華;劉小敏;熊飛;;某堿渣堆放場對巖溶地下水的影響分析[J];環(huán)境監(jiān)測管理與技術(shù);2010年04期

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相關(guān)碩士學(xué)位論文 前1條

1 畢文彥;新型礦用鉆孔密封材料的研究[D];河南理工大學(xué);2009年

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本文編號：1744284