本文選題：水泥水化　切入點(diǎn)：石膏　出處：《哈爾濱工業(yè)大學(xué)》2014年碩士論文

【摘要】：水泥作為混凝土組成中最為主要的成分，其水化程度的發(fā)展直接關(guān)系到混凝土的耐久性和應(yīng)用于建筑結(jié)構(gòu)的安全性。由于水泥中各組分發(fā)生水化反應(yīng)的速率不同，生成水化產(chǎn)物的種類和含量不同，因而對水泥微觀結(jié)構(gòu)的發(fā)展和宏觀性能的影響程度不同。本文探討硬化水泥漿體電阻率的演化過程，進(jìn)而用電阻率法表征選擇性水化體系下水泥漿體的水化過程，建立水化進(jìn)程中電化學(xué)特性、宏觀強(qiáng)度與微觀結(jié)構(gòu)三者間的聯(lián)系，不斷補(bǔ)充完善水泥水化機(jī)理。 本文首先通過水泥熟料在不同齡期水化過程中電化學(xué)參數(shù)的變化特征，初步探討了硬化水泥漿體水化過程中電阻率隨時間的變化規(guī)律，研究各分析測試方法如差熱分析法、紅外光譜法、X射線衍射法和強(qiáng)度等方法的適用性和可行性。 研究不同石膏種類及摻量對水化過程中電化學(xué)性能、物理力學(xué)性能的影響。發(fā)現(xiàn)由于石膏溶解速率不同，石膏對水泥水化速率的影響不同。在此基礎(chǔ)上，研究復(fù)合石膏種類及摻量對水泥水化過程的影響，得出復(fù)合摻入石膏有助于促進(jìn)水化速率以及強(qiáng)度持續(xù)增長。 研究礦物摻合料種類和含量對水泥水化過程的影響，得到摻入礦物摻合料的水泥漿體電阻率和水泥強(qiáng)度發(fā)展隨摻量的增加而降低。在摻合料對水泥強(qiáng)度的影響探究中，，得到不同摻合料都有其最適摻量。 通過本課題的研究將水泥水化過程電化學(xué)性能、強(qiáng)度與微觀結(jié)構(gòu)聯(lián)系起來，對水泥基材料性能的監(jiān)測和評價具有重大意義。
[Abstract]:As the most important component of concrete, the development of hydration degree of cement is directly related to the durability of concrete and the safety of building structure. The types and contents of hydration products are different, so the influence on the development of microstructure and macroscopic properties of cement is different. The evolution process of resistivity of hardened cement paste is discussed in this paper. Furthermore, the hydration process of cement paste under selective hydration system was characterized by resistivity method, and the relationship among electrochemical characteristics, macroscopic strength and microstructure of cement paste in the process of hydration was established, and the hydration mechanism of cement was continuously improved. Based on the characteristics of electrochemical parameters of cement clinker during hydration at different ages, the variation of resistivity with time during hydration of hardened cement paste is preliminarily discussed, and various analytical methods such as differential thermal analysis (DTA) are studied in this paper. The applicability and feasibility of the methods of X-ray diffraction and intensity are discussed in this paper. The effects of different gypsum types and contents on the electrochemical and physical and mechanical properties during hydration are studied. It is found that the gypsum has different effects on the hydration rate of cement due to the different dissolution rate of gypsum. The effects of the type and amount of gypsum on the hydration process of cement were studied. The results show that the addition of gypsum can promote the hydration rate and the strength of cement hydration. The effects of mineral admixture types and contents on cement hydration process are studied. The results show that the resistivity and strength development of cement paste decrease with the increase of the content of mineral admixture. The results show that different admixtures have their optimal content. In this paper, the electrochemical performance, strength and microstructure of cement hydration process are connected, which is of great significance to the monitoring and evaluation of cement based material performance.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU528

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 何廷樹;高哲;李少輝;趙順湖;包先誠;;石膏摻量對以礦渣為摻合料的普通硅酸鹽水泥性能的影響[J];硅酸鹽通報;2012年03期

2 劉鵬;余志武;張鳴;丁鑄;邢峰;胡佳山;;磷鋁酸鹽水泥早期水化過程研究[J];中南大學(xué)學(xué)報(自然科學(xué)版);2011年11期

3 賈雪麗;萬惠文;蘇彪;;利用超聲波法對再生膠凝材料早期水化性能的研究[J];建材世界;2011年01期

4 李華;吳笑梅;樊粵明;;石膏品種對低熱硅酸鹽水泥性能的影響及機(jī)理研究[J];水泥;2010年03期

5 曾曉輝;隋同波;李宗津;;水泥水化放熱與電阻率變化[J];硅酸鹽學(xué)報;2009年04期

6 周勝波;李庚飛;侯新凱;;礦渣水泥漿體中結(jié)晶礦物的XRD分析[J];中國礦業(yè);2008年12期

7 魏小勝;;Electrical Measurement to Assess Hydration Process and the Porosity Formation[J];Journal of Wuhan University of Technology(Materials Science Edition);2008年05期

8 隋同波;曾曉輝;謝友均;李宗津;魏小勝;范磊;文寨軍;;電阻率法研究水泥早期行為[J];硅酸鹽學(xué)報;2008年04期

9 陳亮;周宗輝;曾春洪;;硬化水泥漿的交流阻抗和介電性能研究[J];青島理工大學(xué)學(xué)報;2008年01期

10 孫曉華;;低水灰比下硅酸鹽水泥的水化性能和微觀結(jié)構(gòu)[J];山西建筑;2007年02期

相關(guān)碩士學(xué)位論文 前2條

1 康志堅;水泥石的干燥收縮及其微觀機(jī)理研究[D];重慶大學(xué);2007年

2 賈艷濤;礦渣和粉煤灰水泥基材料的水化機(jī)理研究[D];東南大學(xué);2005年

本文編號：1666717