不同引发剂对应马来酸酐改性橡胶混凝土抗冻性能研究
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摘要
通过不同引发剂对马来酸酐改性橡胶并制备橡胶混凝土,对不同引发剂、橡胶粒径和橡胶掺量对抗冻性能影响进行研究,并通过SEM对冻融前后橡胶混凝土界面进行分析。试验结果表明,以DCP作为引发剂抗冻效果最佳,且橡胶粉粒径为60目、掺量为15%时,橡胶混凝土抗冻性能最佳。经200次冻融循环后,橡胶混凝土内部结构相对松散,结构发生破坏。
The effects of different initiating agents,rubber particle size and rubber content on the frost resistance property of rubber concrete which was prepared by modified rubber with different initiating agents were studied,and the interface of rubber concrete before and after freezing and thawing was analyzed with SEM. The test results show that the frost resistance property of rubber concrete is the best when DCP is used as the initiator and the rubber powder particle size is 60 mesh and the content is 15%.After 200 freeze-thaw cycles,the internal structure of rubber concrete is relatively loose and destroyed.
The effects of different initiating agents,rubber particle size and rubber content on the frost resistance property of rubber concrete which was prepared by modified rubber with different initiating agents were studied,and the interface of rubber concrete before and after freezing and thawing was analyzed with SEM. The test results show that the frost resistance property of rubber concrete is the best when DCP is used as the initiator and the rubber powder particle size is 60 mesh and the content is 15%.After 200 freeze-thaw cycles,the internal structure of rubber concrete is relatively loose and destroyed.
引文
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[2]薛刚,侯帅.不同水胶比的塑钢纤维橡胶混凝土力学性能研究[J].硅酸盐通报,2016,35(5):1552-1557.
[3]Zhu H,Rong B,Xie R,et al.Experimental investigation on the floating of rubber particles of crumb rubber concrete[J].Construction and Building Materials,2018,164:644-654.
[4]Agampodi S M,Mendis,Safat Al-Deen,et al.Effect of rubber particles on the flexural behaviour of reinforced crumbed rubber concrete beams[J].Construction and Building Materials,2017,154:644-657.
[5]Osama Y,Julie E M,Reza H.Assessment of the mechanical performance of crumb rubber concrete[J].Construction and Building Materials,2016,125:175-183.
[6]王刚,杨慧,张磊.橡胶粒径对橡胶混凝土抗压强度的影响[J].路基工程,2011(1):128-130.
[7]赵朋斌.橡胶集料混凝土的碳化试验研究[D].天津:天津大学,2012.
[8]王宝民,刘伟.国外掺废旧橡胶颗粒水泥混凝土研究进展[J].混凝土,2010(4):54-56.
[9]张海波,管学茂.废旧橡胶颗粒对混凝土强度的影响及界面分析[J].材料导报,2009,23(8):65-67.
[10]董智贤,贾德民,周彦豪,等.马来酸酐改性天然胶乳的制备及应用[J].合成橡胶工业,2005,28(3):200-204.
[11]许金余,李赞成,罗鑫.橡胶混凝土抗冻性的对比研究[J].混凝土,2014(4):800-805.
[12]于利刚.废橡胶粉的杂化改性及其对水泥基材料结构与性能的影响[D].广州:华南理工大学,2010.
[13]赵彦亮,刘菲等.不同引发剂对应马来酸酐接枝改性橡胶混凝土力学性能影响研究[J].硅酸盐通报,2017,36(1):168-172.