本文選題：橡膠微粒混凝土　切入點：等抗壓強度　出處：《天津大學》2014年碩士論文　論文類型：學位論文

【摘要】：我國從“十二五”規(guī)劃以來,一直將綠色發(fā)展作為主題,也對土木建筑行業(yè),提出了相關(guān)的要求,要求其加大力度研制開發(fā)綠色環(huán)保型的新型建筑材料及其制品。我國于2006年施行的關(guān)于綠色建筑評價標準中明確指出,綠色建筑是指在整個建筑的服役過程中,能夠最大限度地利用可循環(huán)再生材料,保護環(huán)境和節(jié)約資源,并且能夠盡最大可能減少對環(huán)境的污染。如今,廢舊輪胎橡膠已經(jīng)造成了十分惡劣的“黑色污染”,橡膠微�；炷恋某霈F(xiàn)能夠?qū)U棄的橡膠資源化,不僅很好地解決了大量廢棄橡膠污染環(huán)境的問題,還為建筑工程領(lǐng)域提供了一種新型環(huán)保綠色材料。自1960年至今,橡膠微�；炷翉V受國內(nèi)外學者的關(guān)注與研究,并在其有關(guān)工作性能、力學性能、變形性能、耐久性能、抗疲勞性能、隔音和隔熱性能以及本構(gòu)關(guān)系等方面取得了很多寶貴的科研成果。但現(xiàn)有橡膠微粒混凝土單軸受壓韌性的研究都是從試件的破壞模式和拉壓比等方面間接地說明摻入橡膠后混凝土韌性的變化,或者只考慮應力—應變?nèi)�上升段而沒有考慮下降段,定性分析得到橡膠微粒摻量對混凝土有關(guān)韌性性能的影響,并且有關(guān)等抗壓強度條件下橡膠微�；炷另g性方面的研究較少。本文以橡膠微�；炷亮⒎襟w抗壓強度為30MPa和40MPa為切入點,研究了橡膠微粒不同體積摻量(0、10%和15%)對等抗壓強度橡膠微�；炷恋牧W性能及其韌性和變形的影響,首次定量分析得到混凝土韌性性能與橡膠摻入量的關(guān)系,豐富了橡膠微�；炷恋南嚓P(guān)研究內(nèi)容,也為工程實踐提供了科學依據(jù)。本文首先介紹了橡膠微�；炷羾鴥�(nèi)外的研究進展及其應用現(xiàn)狀,接著提出了一種測定橡膠微粒混凝土單軸受壓棱柱體應力—應變?nèi)�的裝置,并用ANSYS大型通用分析軟件分析了該裝置的適用性,然后根據(jù)本文的研究內(nèi)容確定本試驗所用材料、試驗設(shè)備與儀器、試驗配合比及試驗方法。試驗研究發(fā)現(xiàn):可用采用YNS-Y3000電液伺服壓力試驗機(帶有配套光柵),并選用位移控制加載方式,測定橡膠微粒混凝土單軸受壓應力—應變?nèi)�,并根據(jù)所測定的全曲線以及參照美國ASTM標準計算評定橡膠微�；炷恋捻g性。韌性的計算結(jié)果表明,混凝土中摻入橡膠后較未摻橡膠前其單軸受壓破壞表現(xiàn)出比較明顯的韌性破壞特征,其韌性指數(shù)有較大幅度的提高,并且在一定范圍內(nèi),橡膠微粒摻量越多對混凝土的增韌效果越好。
[Abstract]:Since the 12th Five-Year Plan, green development has been taken as the theme in our country, and the civil construction industry has been required to do so. It is required to make greater efforts to develop new building materials and products that are green and environmentally friendly. In the evaluation standard on green buildings, which was implemented in 2006 in China, it is clearly pointed out that green buildings refer to the whole service process of the buildings. To maximize the use of recyclable materials, to protect the environment and conserve resources, and to minimize pollution to the environment as far as possible. The waste tire rubber has already caused very bad "black pollution". The appearance of rubber particulate concrete can recycle the waste rubber, which not only solves the problem of environmental pollution caused by a large number of waste rubber. From 1960 to now, rubber particulate concrete has been paid much attention to and studied by domestic and foreign scholars, and it has been applied to work performance, mechanical property, deformation property and durability. Fatigue resistance, Many valuable scientific achievements have been made in the aspects of sound insulation and thermal insulation, as well as constitutive relations. However, the existing research on the uniaxial compressive toughness of rubber particulate concrete is explained indirectly from the failure mode of the specimen and the ratio between tensile and compression. The change of toughness of concrete after adding rubber, Or considering only the rise of the stress-strain curve and not the descending section, the effect of rubber particle content on the toughness properties of concrete is obtained by qualitative analysis. And there is little research on the toughness of rubber particle concrete under the condition of equal compressive strength. In this paper, the cube compressive strength of rubber particle concrete is 30 MPA and 40 MPA as the starting point. The mechanical properties and the effects of toughness and deformation of rubber particle concrete with equal compressive strength (10% and 15%) were studied. The relationship between the toughness of concrete and the content of rubber was obtained by quantitative analysis for the first time. It enriches the research contents of rubber particulate concrete and provides scientific basis for engineering practice. Firstly, this paper introduces the research progress and application status of rubber particulate concrete at home and abroad. Then a device for measuring the stress-strain curve of rubber particulate concrete under uniaxial compression is proposed. The applicability of the device is analyzed with ANSYS software. Then, according to the research content of this paper, the materials, test equipment and instruments used in this experiment are determined. Test mix ratio and test method. The test results show that YNS-Y3000 electro-hydraulic servo pressure testing machine (with matching grating and displacement control loading method) can be used to measure the full stress-strain curve of rubber particulate concrete under uniaxial compression. The toughness of rubber particulate concrete is evaluated according to the total curve measured and the calculation of the rubber particle concrete with reference to the ASTM standard of the United States. The calculated results of toughness show that, The uniaxial compressive failure of concrete under uniaxial compression is more obvious than that before adding rubber, and its toughness index has been greatly improved, and in a certain range, The more rubber particles are added, the better the toughening effect of concrete is.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU528

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1 成莞莞;橡膠微粒混凝土韌性研究[D];天津大學;2014年

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本文編號：1638973