改性聚氨酯及其彩色抗滑表层的组成设计
Modified polyurethane and its composition design for colored anti-slip surface layer
田伯科 1兰兆禹 2王敬涛 3姚爱玲 2王康4
作者信息
- 1. 中铁七局集团第三工程有限公司,陕西 西安 710032
- 2. 长安大学公路学院,陕西西安 710064
- 3. 中北工程设计咨询有限公司,陕西 西安 710061
- 4. 长安大学理学院,陕西 西安 710064
- 折叠
摘要
针对彩色抗滑表层常出现的开裂、剥落等病害,选择以聚氨酯为基料,环氧树脂为改性剂进行了复合胶粘剂的研究,并以此为基础开展了抗滑表层的组成设计.首先通过拉伸试验确定,当环氧掺加质量分数为15％时,改性聚氨酯同时具有良好的强度和韧性.接着采用弯曲流变试验对改性聚氨酯的低温性能进行检验,结果显示改性后胶粘剂低温性能得到了明显改善.最后以AC-13C沥青混凝土为基面,采用室内加速加载试验测试了抗滑表层的抗滑耐磨性能衰变规律,具体包括摩擦摆值、构造深度以及剥落率三种指标,以此进行彩色抗滑表层的组成设计.推荐AC-13C路面上抗滑表层胶粘剂的最佳用量为1.0kg/m2,彩色陶瓷粒最佳用量为2.5 kg/m2.
Abstract
Aiming at the cracking,peeling and other diseases that often occur in the colored anti-skid surface layer,the composite ad-hesive was studied with polyurethane as base material and epoxy resin as modifier and based on this,the composition design of the anti-sliding surface layer was carried out.Firstly,it was determined through tensile testing that when the mass fraction of epoxy added was 15％,the modified polyurethane had both good strength and toughness.Then,the low temperature performance of the modified polyure-thane was tested by bending rheological test,which showed that the low temperature performance of the modified adhesive was signifi-cantly improved.Finally,using AC-13C asphalt concrete as the base surface,the indoor accelerated loading test was used to test the decay law of the anti-skid and wear-resistance of the anti-skid surface layer,including three indicators of friction pendulum value,structural depth,and spalling rate.Based on this,the composition design ofthe color anti-skid surface layer was carried out.The recom-mended optimal dosage for anti-skid surface layer adhesive on AC-13C pavement was 1.0 kg/m2,and the optimal dosage for colored ce-ramic particles was 2.5 kg/m2.
关键词
聚氨酯/环氧树脂/抗滑表层/抗滑耐磨性能衰变/组成设计Key words
polyurethane/epoxy resin/anti-slip surface layer/anti-slip wear performance decay/composition design引用本文复制引用
出版年
2024
NETL
NSTL
万方数据