本文選題：粘土水泥漿材 + 流變特性��； 參考：《長沙理工大學(xué)》2015年碩士論文

【摘要】：粘土水泥漿材性能優(yōu)越,已廣泛應(yīng)用于水利工程、礦山工程、垃圾填埋場等防滲堵漏及基礎(chǔ)加固。目前對粘土水泥漿材的基本性能研究較多,但對其流變性能,尤其是流變對灌漿工程的影響研究較少。本文對粘土水泥漿材的流變特性展開較為細(xì)致的研究,主要研究內(nèi)容及成果如下:(1)利用Brookfield+R/S流變儀對粘土水泥系列漿材層流狀態(tài)下的流變參數(shù)進(jìn)行測試,研究水固比、粘土加量、溫度等因素以及壓濾作用對流變參數(shù)的影響;水固比小于等于1.0:1的漿材為賓漢流體,水固比大于1.0:1的為牛頓流體;粘土加量對流變參數(shù)的影響與水固比密切相關(guān);漿材的流變參數(shù)隨溫度改變而變化。(2)利用研發(fā)的壓濾試驗(yàn)裝置配合流變儀進(jìn)行漿液在巖土體吸附作用下的漿材流變特性的循環(huán)測試,以及漿材在壓濾效應(yīng)前后期流變特性的變化;巖土體吸附作用下漿材的粘度以及屈服應(yīng)力逐漸增大;粘土水泥漿材更易發(fā)生壓濾效應(yīng),且壓濾效應(yīng)對粘土水泥漿材的影響較純水泥漿小�？紤]灌漿過程中巖土體對漿液的吸附作用,粘土水泥漿材的流型是有可能發(fā)生變化的。(3)對粘土水泥漿材顆粒進(jìn)行粒徑分析,并引入相關(guān)公式,利用測得的流變參數(shù)進(jìn)行計(jì)算論證。得出粘土顆粒粒徑小于普通水泥顆粒,在漿材粒徑可以進(jìn)入裂隙的前提條件下,粘土水泥漿材的可灌性優(yōu)于純水泥漿材。(4)進(jìn)行灌漿試驗(yàn),研究影響粘土水泥漿材流變特性的因素對可灌性的影響。揭示了水固比、粘土加量、灌漿壓力等對可灌性的影響。比較分析現(xiàn)有的擴(kuò)散模型,論證了粘土水泥漿材的擴(kuò)散距離隨流變性能的變而變化。對于牛頓流體,漿材粘度越小,擴(kuò)散越遠(yuǎn);對于賓漢流體,屈服應(yīng)力對擴(kuò)散距離影響較粘度大,且屈服應(yīng)力越大,擴(kuò)散距離越小。漿材的材料力學(xué)性能研究已較充分,但其流變特性對工程的實(shí)際影響不甚明了,應(yīng)努力研究并發(fā)現(xiàn)漿材的流變特性的工程影響,以影響為突破口來研制出更加適合灌漿的灌漿材料。
[Abstract]:Clay cement paste has been widely used in water conservancy engineering, mine engineering, landfill and other seepage prevention, leakage plugging and foundation reinforcement.At present, there are many researches on the basic properties of clay cement paste, but few on its rheological properties, especially the influence of rheology on grouting engineering.The effects of clay addition, temperature and pressure filtration on rheological parameters, the effect of clay addition on rheological parameters, the effect of clay addition on rheological parameters, the effects of clay addition on rheological parameters, and the effects of clay addition on rheological parameters are closely related to those of Bingham fluid and Newtonian fluid with water / solid ratio less than 1.0: 1 and 1.0: 1, respectively.The rheological parameters of slurry vary with the change of temperature. (2) the rheological properties of slurry under the adsorption of rock and soil are measured by using the developed pressure filtration test device and rheometer.The effect of pressure filtration on clay cement paste is smaller than that of pure cement slurry.Considering the adsorption effect of rock and soil on slurry during grouting, the flow pattern of clay cement is likely to change, and the particle size of clay cement is analyzed, and the relevant formula is introduced.The measured rheological parameters are used for calculation and demonstration.The results show that the particle size of clay is smaller than that of ordinary cement, and the grouting test is carried out on the condition that the size of slurry can enter the fissure, and the irrigability of clay cement is better than that of pure cement.The influence of the factors affecting the rheological properties of clay cement paste on the irrigability was studied.The effects of water / solid ratio, clay addition and grouting pressure on irrigability are revealed.By comparing and analyzing the existing diffusion models, it is demonstrated that the diffusion distance of clay cement paste varies with the rheological properties.For Newtonian fluid, the lower the viscosity of the slurry, the farther the diffusion, and for the Bingham fluid, the effect of yield stress on the diffusion distance is greater than that of the viscosity, and the larger the yield stress is, the smaller the diffusion distance is.The mechanical properties of slurry materials have been fully studied, but the effect of rheological properties on engineering is not clear. Therefore, it is necessary to study and find out the engineering effects of rheological properties of slurry materials.A more suitable grouting material was developed by using the influence as the breakthrough point.
【學(xué)位授予單位】：長沙理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU578

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張貴金;楊東升;梁經(jīng)緯;張聰;潘燁;;粘土水泥復(fù)合漿材強(qiáng)度研究[J];水利水電技術(shù);2015年01期

2 秦鵬飛;符平;王春;王麗娟;;砂礫石土灌漿漿液擴(kuò)散半徑試驗(yàn)研究[J];長江科學(xué)院院報(bào);2014年05期

3 馬哲;龐浩;楊元龍;徐宇亮;;化學(xué)灌漿材料的研究進(jìn)展綜述[J];廣州化學(xué);2014年01期

4 房凱;夏唐代;包柳青;葉建梁;陳士才;;考慮濾過效應(yīng)的卵礫石層漿液擴(kuò)散研究[J];巖石力學(xué)與工程學(xué)報(bào);2013年07期

5 張貴金;楊松林;陳安重;張群;;適應(yīng)深厚復(fù)雜巖土層防滲灌漿的可控性黏土水泥穩(wěn)定漿材及快速配制[J];巖石力學(xué)與工程學(xué)報(bào);2012年S1期

6 王立彬;燕喬;畢明亮;;砂礫石層可灌性分析與探討[J];水利規(guī)劃與設(shè)計(jì);2010年05期

7 何濤;趙青林;徐奇威;劉源強(qiáng);;不同外加劑對水泥基灌漿材料流變性能的影響[J];硅酸鹽通報(bào);2010年03期

8 謝元彥;楊海林;阮建明;;流變學(xué)的研究及其應(yīng)用[J];粉末冶金材料科學(xué)與工程;2010年01期

9 楊曉東;;水泥灌漿漿液運(yùn)動及壓力技術(shù)分析[J];中國水利水電科學(xué)研究院學(xué)報(bào);2009年04期

10 萬惠文;唐春剛;張瑜;;礦物摻和料與高效減水劑對漿體流變性的影響[J];武漢理工大學(xué)學(xué)報(bào);2007年12期

相關(guān)碩士學(xué)位論文 前2條

1 冉景太;粘土水泥漿液性能研究[D];昆明理工大學(xué);2010年

2 盧爽;磨細(xì)礦物摻合料對水泥基灌漿材料流變性能的影響[D];哈爾濱工業(yè)大學(xué);2006年

，

本文編號：1741082