【摘要】：為了合理有效地選擇橡膠瀝青結(jié)合料制備過(guò)程中的膠粉摻量、外摻劑摻量及制備工藝參數(shù),對(duì)其進(jìn)行了多項(xiàng)性能的"4因素3水平"正交試驗(yàn),分析了剪切時(shí)間、剪切溫度、膠粉摻量及硫摻量對(duì)各項(xiàng)性能變化趨勢(shì)及影響程度,并確定了各項(xiàng)制備工藝參數(shù)及外摻劑的優(yōu)化組合方案。研究結(jié)果表明:膠粉摻量對(duì)橡膠瀝青結(jié)合料各項(xiàng)性能均有顯著影響,增加膠粉摻量能有效提高其高溫性能,但同時(shí)降低其低溫性能與彈性恢復(fù)能力,其最佳摻量應(yīng)為20%~25%;剪切時(shí)間應(yīng)在30min以上以保證膠粉充分溶脹,但剪切時(shí)間過(guò)長(zhǎng)會(huì)導(dǎo)致橡膠瀝青各項(xiàng)性能的顯著降低,剪切時(shí)間應(yīng)在30~60min之間;增大硫摻量能抑制橡膠瀝青中的脫硫反應(yīng),在一定程度提高橡膠瀝青高溫性能,但過(guò)大的硫摻量會(huì)造成低溫性能的顯著下降,橡膠瀝青中硫摻量宜小于膠粉摻量的0.6%;橡膠瀝青室內(nèi)制備參數(shù)及外摻劑含量存在優(yōu)化組合方案。
[Abstract]:In order to reasonably and effectively select the amount of rubber powder, the amount of admixture and the technological parameters of preparation of rubber asphalt binder, the orthogonal experiments of "4 factors and 3 levels" for many properties were carried out, and the shear time and temperature were analyzed. The change trend and influence degree of rubber powder and sulfur content on the properties were determined. The preparation process parameters and the optimized combination scheme of the admixture were determined. The results show that the content of rubber powder has a significant effect on the properties of rubber asphalt binder. Increasing the content of rubber powder can effectively improve its high temperature performance, but at the same time reduce its low temperature performance and elastic recovery ability. The optimum dosage should be 20 / 25, the shearing time should be above 30min to ensure that the rubber powder is fully swelled, but if the shearing time is too long, the properties of rubber asphalt will be significantly reduced, and the shearing time should be between 30~60min; Increasing sulfur content can inhibit the desulfurization reaction in rubber asphalt and improve the high temperature performance of rubber asphalt to a certain extent. The content of sulfur in rubber asphalt should be smaller than that of rubber powder, and the preparation parameters and admixture content of rubber asphalt should be optimized.
【作者單位】： 長(zhǎng)安大學(xué)公路學(xué)院;廣西交通科學(xué)研究院
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51078040) 交通運(yùn)輸部西部交通建設(shè)科技項(xiàng)目(2011 318 788 1280) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金項(xiàng)目(CHD20115Y003)
【分類號(hào)】：U414

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 黃文元;張隱西;;路面工程用橡膠瀝青的反應(yīng)機(jī)理與進(jìn)程控制[J];公路交通科技;2006年11期

2 郭朝陽(yáng);何兆益;曹陽(yáng);;廢胎膠粉改性瀝青改性機(jī)理研究[J];中外公路;2008年02期

3 肖川;凌天清;;廢舊橡膠粉改性瀝青材料在道路工程中的應(yīng)用與研究[J];公路工程;2009年04期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 宋財(cái)福;張鵬;譚建志;;PE管件注塑成型工藝優(yōu)化設(shè)計(jì)[J];工程塑料應(yīng)用;2011年05期

2 闞清華;湯斌;張慶慶;張海龍;;滬釀3.042米曲霉產(chǎn)中性蛋白酶條件的優(yōu)化[J];安徽工程科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2010年02期

3 張U，

本文編號(hào)：2225969