本文關(guān)鍵詞：橡膠集料混凝土路用性能試驗(yàn)研究　出處：《遼寧工程技術(shù)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： 橡膠集料混凝土 正交設(shè)計(jì) 表面處理 力學(xué)性能 抗氯離子滲透 抗鹽凍

【摘要】：橡膠集料混凝土作為一種新型節(jié)能環(huán)保材料,因其具有良好的工程特性如彈性模量低、脆性低、抗裂性能好、阻尼系數(shù)高等,更適合作路面材料。本文是遼寧省教育廳資助項(xiàng)目—“基于微觀結(jié)構(gòu)特征的橡膠集料混凝土耐久性研究”的子項(xiàng)目,主要針對(duì)橡膠集料的摻量和粗細(xì)程度對(duì)路面混凝土工作性、強(qiáng)度、抗氯離子滲透和抗鹽凍等性能影響進(jìn)行研究,取得如下研究成果。(1)利用清水、NaOH溶液對(duì)橡膠集料表面處理后,發(fā)現(xiàn)與未經(jīng)處理的相比,配制的混凝土和砂漿強(qiáng)度無顯著提高。因此,對(duì)于橡膠細(xì)集料,特別是橡膠粉,從混凝土強(qiáng)度角度考慮,沒有必要對(duì)其表面進(jìn)行處理。(2)橡膠的摻入降低了混凝土的流動(dòng)性,當(dāng)橡膠顆粒取代細(xì)集料的取代率為55%時(shí),混凝土拌合物不僅流動(dòng)性變差,且粘聚性也變差。橡膠顆粒摻量越多,細(xì)度越小,對(duì)混凝土拌合物的工作性影響越大。橡膠集料混凝土的表觀密度,隨著橡膠顆粒摻量的遞增而遞減。(3)橡膠集料混凝土的抗壓強(qiáng)度,隨著橡膠顆粒摻量的遞增而遞減。正交分析結(jié)果顯示,橡膠顆粒的摻量對(duì)混凝土抗壓強(qiáng)度影響特別顯著,粗細(xì)程度對(duì)混凝土抗壓強(qiáng)度影響顯著,且二者與混凝土抗壓強(qiáng)度之間存在線性相關(guān)性。(4)橡膠顆粒的摻量和粗細(xì)程度對(duì)混凝土抗氯離子滲透性能影響顯著。橡膠顆粒越細(xì),對(duì)抗氯離子滲透越有利。橡膠顆粒取代率一旦超過25%,混凝土抗氯離子滲透性能便開始下降。當(dāng)橡膠顆粒取代率為25%且為特細(xì)橡膠粉時(shí),混凝土的電通量最小,僅為基準(zhǔn)混凝土的42.4%,氯離子滲透性能力很低。橡膠顆粒的摻量、細(xì)度模數(shù)與混凝土的電通量之間存在線性相關(guān)性。(5)橡膠顆粒的摻量對(duì)混凝土抗鹽凍性能影響特別顯著,粗細(xì)程度影響顯著。200次凍融循環(huán)后,只有取代率為25%且粗橡膠顆粒和中橡膠顆粒兩組橡膠集料混凝土破壞。在本試驗(yàn)條件下,摻入40%特細(xì)橡膠顆粒,混凝土抗鹽凍性能最好。二者與混凝土動(dòng)彈模損失率之間也存在線性相關(guān)性。
[Abstract]:As a new energy saving and environmental protection material, rubber aggregate concrete has good engineering properties such as low elastic modulus, low brittleness, good crack resistance and high damping coefficient. This paper is a subproject of "Research on durability of Rubber aggregate concrete based on Microstructure characteristics" funded by Liaoning Provincial Education Department. The effects of rubber aggregate content and thickness on the workability, strength, chloride penetration resistance and salt freezing resistance of pavement concrete were studied, and the following research results were obtained: 1) using clear water. After the surface treatment of rubber aggregate by NaOH solution, it was found that the strength of concrete and mortar prepared by NaOH solution was not significantly improved compared with that of untreated aggregate. Therefore, for rubber fine aggregate, especially rubber powder. From the point of view of concrete strength, it is not necessary to treat the surface of concrete. 2) the mixing of rubber reduces the fluidity of concrete, when the substitution ratio of rubber particles to fine aggregate is 55. The more rubber particles, the smaller the fineness, the greater the influence on the workability of concrete mixture. The apparent density of rubber aggregate concrete. The compressive strength of rubber aggregate concrete decreases with the increase of rubber particle content. The orthogonal analysis results show that the compressive strength of rubber aggregate concrete decreases with the increase of rubber particle content. The content of rubber particles has a significant effect on the compressive strength of concrete, and the degree of thickness has a significant effect on the compressive strength of concrete. And there is a linear correlation between them and the compressive strength of concrete. 4) the content and thickness of rubber particles have a significant effect on the chloride ion permeability of concrete. The finer the rubber particles are. When the substitution ratio of rubber particles exceeds 25, the resistance of concrete to chloride ion penetration begins to decline. When the substitution ratio of rubber particles is 25% and is ultrafine rubber powder. The electric flux of concrete is the smallest, which is only 42.4 of the standard concrete. The permeability of chloride ion is very low, and the content of rubber particles is very low. There is a linear correlation between the modulus of fineness and the electric flux of concrete. (5) the content of rubber particles has a significant effect on the frost resistance of concrete, and the degree of thickness has a significant effect on the freezing and thawing cycles of concrete for 200 times. Only the substitution ratio is 25% and the two groups of rubber aggregate concrete are destroyed by coarse rubber particles and medium rubber particles. Under the test conditions, 40% extra fine rubber particles are added. The salt freezing resistance of concrete is the best, and there is a linear correlation between them and the loss rate of concrete dynamic modulus.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U414

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 武衛(wèi)莉;王晶;;硅烷偶聯(lián)劑對(duì)粉煤灰/廢膠粉復(fù)合材料性能的影響[J];有機(jī)硅材料;2011年02期

2 管學(xué)茂;李飛;張海波;李展;;Si-69偶聯(lián)劑處理的橡膠水泥砂漿抗壓強(qiáng)度研究[J];材料導(dǎo)報(bào);2009年14期

3 劉日鑫;侯文順;徐永紅;徐開勝;;廢橡膠顆粒對(duì)混凝土力學(xué)性能的影響[J];建筑材料學(xué)報(bào);2009年03期

4 劉日鑫;徐開勝;高煒斌;;膠粉對(duì)混凝土韌塑性的影響研究[J];新型建筑材料;2009年01期

5 袁勇;鄭磊;;橡膠混凝土動(dòng)力性能試驗(yàn)研究[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2008年09期

6 鄭莉娟;余其俊;韋江雄;于利剛;劉嵐;;廢橡膠粉的改性及其對(duì)水泥砂漿性能的影響[J];武漢理工大學(xué)學(xué)報(bào);2008年01期

7 楊全兵;;混凝土鹽凍破壞機(jī)理(Ⅰ)——毛細(xì)管飽水度和結(jié)冰壓[J];建筑材料學(xué)報(bào);2007年05期

8 楊林虎;朱涵;王慶余;;路面橡膠集料混凝土抗折強(qiáng)度的試驗(yàn)研究[J];工業(yè)建筑;2007年09期

9 楊醫(yī)博;梁松;莫海鴻;陳尤雯;;混凝土抗氯離子滲透性能試驗(yàn)方法的探討[J];中國港灣建設(shè);2007年01期

10 朱涵;新型彈性混凝土的研究綜述[J];天津建設(shè)科技;2004年02期

，

本文編號(hào)：1408428