發(fā)布時(shí)間：2018-01-18 15:08

  本文關(guān)鍵詞：玄武巖纖維增強(qiáng)機(jī)場道面混凝土的力學(xué)性能研究　出處：《沈陽工業(yè)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： 玄武巖纖維混凝土 力學(xué)性能 試驗(yàn)研究 數(shù)值模擬

【摘要】：玄武巖纖維是以天然玄武巖礦石為原料制成的一種無機(jī)連續(xù)纖維，除具有抗腐蝕、耐高溫、成本低等優(yōu)點(diǎn)外，還有著優(yōu)越的力學(xué)性能和天然的相容性，在各行各業(yè)中得到廣泛應(yīng)用，尤其作為混凝土增強(qiáng)領(lǐng)域的新型材料，在工程實(shí)際中的作用日趨明顯。 本文結(jié)合普通水泥混凝土機(jī)場跑道設(shè)計(jì)要求及其具備的性能，對玄武巖纖維增強(qiáng)混凝土在不同制備工藝條件下的抗壓、抗折、劈裂抗拉等力學(xué)性能進(jìn)行了試驗(yàn)研究。并根據(jù)纖維混凝土經(jīng)典理論及SEM圖片，對玄武巖纖維增強(qiáng)混凝土的增強(qiáng)、增韌機(jī)理進(jìn)行分析，構(gòu)建玄武巖纖維增強(qiáng)混凝土作為面層的機(jī)場跑道模型，利用有限元分析軟件進(jìn)行模擬分析，并得出結(jié)論。具體研究內(nèi)容如下： 1．對玄武巖纖維增強(qiáng)混凝土在不同制備工藝下的抗壓、抗折、抗劈拉等力學(xué)性能開展試驗(yàn)研究。結(jié)果顯示：玄武巖纖維對于混凝土的抗壓強(qiáng)度沒有明顯提高，而在抗折及抗劈拉強(qiáng)度上提高效果明顯，，并且抗折強(qiáng)度及劈拉強(qiáng)度都隨著纖維體積摻量的增加而增大。兩種制備工藝對比下水泥凈漿包裹纖維摻入法對混凝土的增強(qiáng)、增韌效果優(yōu)于直接摻入法。 2．根據(jù)經(jīng)典理論，從耗能角度分析玄武巖纖維混凝土的增強(qiáng)、增韌機(jī)理。對不同制備工藝、不同摻量條件下的試塊做成掃描試樣，利用掃描電子顯微鏡觀察纖維與混凝土之間的結(jié)合情況，并對不同條件下試樣的SEM照片進(jìn)行比對。結(jié)果顯示：預(yù)處理方法制備的混凝土內(nèi)部孔隙率、纖維分散性、水化作用效果、粘結(jié)性等都要優(yōu)于直摻法。 3．構(gòu)建玄武巖纖維增強(qiáng)混凝土作為面層的機(jī)場跑道模型，并利用ABAQUS有限元分析軟件對其進(jìn)行受力分析，分析不同機(jī)型條件下跑道的應(yīng)力及變形情況，結(jié)果表明：玄武巖纖維增強(qiáng)混凝土作為面層的機(jī)場跑道有著優(yōu)越的力學(xué)性能，滿足三種機(jī)型的使用要求。 以上研究表明，作為一種具有良好力學(xué)性能的復(fù)合型工程材料，加之其優(yōu)越的經(jīng)濟(jì)性，玄武巖纖維增強(qiáng)混凝土必將進(jìn)一步得到廣泛的工程應(yīng)用。本文的研究成果為該材料的進(jìn)一步的工程應(yīng)用提供了有益的參考和借鑒。
[Abstract]:Basalt fiber is a kind of inorganic continuous fiber made from natural basalt ore. Besides its advantages of corrosion resistance, high temperature resistance and low cost, it also has excellent mechanical properties and natural compatibility. It has been widely used in various industries, especially as a new material in the field of concrete reinforcement, which plays an increasingly important role in engineering practice. According to the requirements of ordinary cement concrete airfield runway design and its performance, this paper studies the compressive and flexural properties of basalt fiber reinforced concrete under different preparation conditions. According to the classical theory of fiber reinforced concrete and SEM pictures, the mechanism of strengthening and toughening of basalt fiber reinforced concrete is analyzed. The model of airport runway with basalt fiber reinforced concrete as the surface layer is constructed, and the finite element analysis software is used to simulate and analyze it, and the conclusion is drawn. The specific research contents are as follows: 1. The compressive and flexural properties of basalt fiber reinforced concrete under different preparation processes. The results show that the compressive strength of basalt fiber is not obviously improved, but the effect of bending and splitting tensile strength is obvious. The flexural strength and splitting tensile strength increase with the increase of fiber volume content. The toughening effect of cement paste coated fiber blending method is better than that of direct blending method under the comparison of two kinds of preparation technology. 2. According to the classical theory, the strengthening and toughening mechanism of basalt fiber reinforced concrete is analyzed from the angle of energy dissipation. The bonding between fiber and concrete was observed by scanning electron microscope (SEM), and the SEM photos of the samples were compared under different conditions. The results showed that the internal porosity of concrete prepared by pretreatment method. Fiber dispersity, hydration effect and adhesion are better than direct mixing method. 3. The model of airport runway with basalt fiber reinforced concrete as the surface layer is constructed and analyzed by ABAQUS finite element analysis software. The stress and deformation of runway under different model conditions are analyzed. The results show that the airport runway with basalt fiber reinforced concrete as surface layer has superior mechanical properties and meets the requirements of three types of aircraft. The above research shows that as a composite engineering material with good mechanical properties and its superior economy. Basalt fiber reinforced concrete will be widely used in engineering. The research results in this paper provide a useful reference for the further engineering application of this material.
【學(xué)位授予單位】：沈陽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U414;V351.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李文蕾;吳永根;馬世寧;;玄武巖纖維增強(qiáng)機(jī)場道面混凝土力學(xué)性能試驗(yàn)研究[J];四川建筑科學(xué)研究;2012年01期

2 謝爾蓋;玄武巖纖維的特性及其在中國的應(yīng)用前景[J];玻璃纖維;2005年05期

3 毛俊芳;董衛(wèi)國;叢森滋;;玄武巖纖維特性及其應(yīng)用前景[J];產(chǎn)業(yè)用紡織品;2007年10期

4 余輝;周美英;顧秋琴;;碳纖維增強(qiáng)混凝土力學(xué)性能試驗(yàn)分析[J];常州工學(xué)院學(xué)報(bào);2006年05期

5 丁鑄;張曉強(qiáng);張鳴;王淑平;邢鋒;;聚丙烯纖維、鋼纖維混凝土材料性能研究[J];低溫建筑技術(shù);2009年10期

6 趙中華;劉曉波;侯新月;馬耀輝;;玄武巖纖維在混凝土中的應(yīng)用[J];低溫建筑技術(shù);2011年07期

7 陳峰;;玄武巖纖維混凝土的發(fā)展及研究前景[J];福建建材;2011年05期

8 胡顯奇;申屠年;;連續(xù)玄武巖纖維在軍工及民用領(lǐng)域的應(yīng)用[J];高科技纖維與應(yīng)用;2005年06期

9 齊風(fēng)杰;李錦文;李傳校;魏化震;高永忠;;連續(xù)玄武巖纖維研究綜述[J];高科技纖維與應(yīng)用;2006年02期

10 曹海琳;郎海軍;孟松鶴;;連續(xù)玄武巖纖維結(jié)構(gòu)與性能試驗(yàn)研究[J];高科技纖維與應(yīng)用;2007年05期

本文編號：1441377