橡胶颗粒掺量对水泥混凝土抗压及抗盐冻影响
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摘要
为了拓展橡胶集料混凝土在寒冷地区桥面铺装的应用,取橡胶颗粒按六种不同掺量替代等体积的砂制作橡胶集料混凝土试件,对该试件进行抗压及抗盐冻性能的研究,试验表明:橡胶颗粒的掺入明显提高了混凝土的抗盐冻性,在9%掺量时,其抗盐冻性最好,随着冻融循环次数的不断增加,橡胶集料混凝土的相对抗压强度值明显大于基准混凝土的相对抗压强度值,掺量为9%的橡胶集料混凝土相对抗压强度最大.
In order to expand the application of rubber aggregate concrete in cold area,the rubber aggregate concrete specimens were made from six kinds of sand with different dosage to replace the same volume of sand.The results showed that the addition of rubber particles significantly improved the anti-salt freezing performance of concrete,and reached the optimal level when 9% of the content was added.With the increase of freeze-thaw cycles,the relative compressive strength of rubber aggregate concrete is obviously greater than that of reference concrete,and the relative compressive strength of rubber aggregate concrete with 9% content is the largest.
In order to expand the application of rubber aggregate concrete in cold area,the rubber aggregate concrete specimens were made from six kinds of sand with different dosage to replace the same volume of sand.The results showed that the addition of rubber particles significantly improved the anti-salt freezing performance of concrete,and reached the optimal level when 9% of the content was added.With the increase of freeze-thaw cycles,the relative compressive strength of rubber aggregate concrete is obviously greater than that of reference concrete,and the relative compressive strength of rubber aggregate concrete with 9% content is the largest.
引文
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[2]孟彩云.胶粉改性及其并用胶的制备与性能研究[D].扬州:扬州大学,2006
[3]杨志峰.废旧橡胶粉在道路工程中应用的历史和现状[J].公路交通科技,2005,22(7):19~22
[4]NadiaSegre,PauloJ.M.Monteiro,GarrisonSposito.Effect of tire rubber particles on crack propagation in cement paste.Materials Research,2006
[5]Segre N.,Joekes I.Use of tire rubber particles as addition to cement paste,Cement and Concrete Research,2000,30(9):1421~1425
[6]范璐璐,王龙.废旧橡胶颗粒界面处理及水泥混凝土路用性能的影响[J].广东省第五次土木工程施工技术交流论文集,2013
[7]人民交通出版社.JTGE30-2005公路工程水泥及水泥混凝土试验规程[S].2005