固化粉土底基層力學特性分析
發(fā)布時間:2018-11-18 19:20
【摘要】:選擇石灰+粉煤灰、石灰+粉煤灰+水泥、石灰+水泥、SEU-2型固化劑4種外摻劑,對粉土進行固化以作為公路底基層。使用BISAR程序建立路面結構的計算模型,計算在車輛荷載作用下固化粉土底基層的拉應力和拉應變,通過彎拉應力驗算,檢驗固化粉土底基層的抗拉強度是否滿足要求,并且比較4種外摻劑的固化效果。研究結果表明,底基層的厚度和抗壓回彈模量對底基層的力學特性有較大影響,固化粉土底基層結構的優(yōu)化參數為厚度15cm,抗壓回彈模量1 100MPa;固化粉土底基層的抗拉強度滿足設計要求,且SEU-2型固化劑的固化效果優(yōu)于其他3種外摻劑。
[Abstract]:Lime fly ash, lime fly ash cement, lime cement and SEU-2 curing agent were selected to solidify silt as the base of highway base. The calculation model of pavement structure is established by using BISAR program, and the tensile stress and strain of solidified silt base under vehicle load are calculated. By checking the bending tensile stress, the tensile strength of solidified silt base is checked to see if the tensile strength meets the requirements. The curing effects of four kinds of admixtures were compared. The results show that the thickness and modulus of compressive resilience of the base have great influence on the mechanical properties of the base. The optimum parameters of the base structure of solidified silt are 15cm thick and 1100MPa of modulus of resilience. The tensile strength of solidified silt base can meet the design requirements, and the curing effect of SEU-2 curing agent is better than that of the other three kinds of admixtures.
【作者單位】: 東南大學巖土工程研究所;
【基金】:國家自然科學基金項目(40872173) 江蘇交通科技項目(2010Y36-3)
【分類號】:U416.2
本文編號:2340944
[Abstract]:Lime fly ash, lime fly ash cement, lime cement and SEU-2 curing agent were selected to solidify silt as the base of highway base. The calculation model of pavement structure is established by using BISAR program, and the tensile stress and strain of solidified silt base under vehicle load are calculated. By checking the bending tensile stress, the tensile strength of solidified silt base is checked to see if the tensile strength meets the requirements. The curing effects of four kinds of admixtures were compared. The results show that the thickness and modulus of compressive resilience of the base have great influence on the mechanical properties of the base. The optimum parameters of the base structure of solidified silt are 15cm thick and 1100MPa of modulus of resilience. The tensile strength of solidified silt base can meet the design requirements, and the curing effect of SEU-2 curing agent is better than that of the other three kinds of admixtures.
【作者單位】: 東南大學巖土工程研究所;
【基金】:國家自然科學基金項目(40872173) 江蘇交通科技項目(2010Y36-3)
【分類號】:U416.2
【相似文獻】
相關期刊論文 前10條
1 劉雪;;外摻劑在橋梁混凝土施工中的應用[J];交通世界(建養(yǎng).機械);2009年11期
2 魏網民;;淺談鋼筋混凝土外摻劑的應用[J];科學之友(B版);2007年03期
3 周平;夏新瑞;;外摻劑對混凝土的影響分析[J];黑龍江交通科技;2007年05期
4 李麗莎;;利用外摻劑改善石灰-粉煤灰材料性能的研究[J];粉煤灰綜合利用;2010年04期
5 趙冬明;;“路寶”高模量外摻劑的性能及應用[J];北方交通;2012年08期
6 袁青泉;;外摻劑對易密實瀝青混凝土性能影響研究[J];公路;2013年08期
7 張朝旭;;路寶牌高模量瀝青混凝土外摻劑研究與性能分析[J];北方交通;2008年04期
8 高明;李巍;陳靜博;孫剛志;;高模量外摻劑改性中面層混合料配合比設計要點[J];北方交通;2009年02期
9 潘強;;復合外摻劑混凝土配合比設計及技術性能研究[J];交通標準化;2009年13期
10 胡應德,曹恒進,曹陽;二灰碎石抗裂外摻劑的開發(fā) 研究及應用[J];華東公路;2002年03期
相關碩士學位論文 前1條
1 朱萬輝;外摻劑對提高二灰穩(wěn)定粒料早期強度的研究[D];吉林大學;2007年
,本文編號:2340944
本文鏈接:http://sikaile.net/kejilunwen/daoluqiaoliang/2340944.html