[1]刘振正,等.柱状灯芯法测定集料黏附性的试验参数优化[J].长安大学学报(自然科学版),2024,44(6):23-33.[doi:10.19721/j.cnki.1671-8879.2024.06.003]
　LIU Zhen-zheng,LI Bo,YI Zhao,et al.Optimization of test parameters for measuring aggregate adhesion by column lamp core method[J].Journal of Chang’an University (Natural Science Edition),2024,44(6):23-33.[doi:10.19721/j.cnki.1671-8879.2024.06.003]
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柱状灯芯法测定集料黏附性的试验参数优化()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第44卷
期数:
2024年6期
页码:
23-33
栏目:
道路工程
出版日期:
2024-12-30

文章信息/Info

Title:
Optimization of test parameters for measuring aggregate adhesion by column lamp core method
文章编号:
1671-8879(2024)06-0023-11
作者:
刘振正1;  2; 李 波1; 易 昭1; 张新秀3; 刘婉莹1
(1. 兰州交通大学 甘肃省交通土建材料研发与应用行业技术中心,甘肃 兰州 730070; 2. 内蒙古自治区交通运输科学发展研究院 生态安全屏障区交通网设施管控及循环修复技术交通运输行业重点实验室,内蒙古 呼和浩特 010051; 3. 甘肃恒石公路检测科技有限公司,甘肃 兰州 730070)
Author(s):
LIU Zhen-zheng1; 2;  LI Bo1;  YI Zhao1;  ZHANG Xin-xiu3;  LIU Wan-ying1
关键词:
道路工程;  集料;  柱状灯芯法;  表面能理论;  接触角;  因素分析
Keywords:
road engineering;  aggregate;  column wick method;  surface energy theory;  contact angle;  factor analysis
分类号:
U414
DOI:
10.19721/j.cnki.1671-8879.2024.06.003
文献标志码:
A
摘要:
为解决集料表面能黏附性测试采用柱状灯芯法试验操作及试验步骤非标准化导致试验结果重复性差的问题,选取非极性(氯仿溶液、甲苯溶液、二碘甲烷溶液)、弱极性(甲酰胺溶液、乙二醇溶液)、强极性(蒸馏水)6种测试液体及路面工程中常用集料的母岩(2种沉积岩:A类石灰岩、B类石灰岩)和3种岩浆岩(辉绿岩、玄武岩、花岗岩)的集料粉体进行柱状灯芯法试验。结合柱状灯芯法测试原理及试验现象,对粉体振实时间、测试液体、集料粉体粒径及集料粉体复合种类因素进行接触角影响研究。结果表明:集料表面的粗糙度对接触角影响较大,与接触角试验相比,柱状灯芯法使用粉末材料可排除粗糙度影响; 柱状灯芯法中振实垂直高度为3 cm、振实时间达到6 min后,集料粉体形成的孔隙通道最为稳定; 测试液体的选择方面考虑了接触角结果,测试液体色散分量占比越大,形成分子作用力越大,导致与集料粉体的接触角逐渐变小,易出现不合理的接触角结果,应避免选择该种测试液体; 集料粉体粒径对接触角的测量有直接影响,选择粒径为[0.04,0.075)mm的粉体作为试验样品,可降低试验操作误差和结果离散性,提高柱状灯芯法试验的重复性和再现性; 通过对酸碱复合式矿粉进行表面能测试,发现碱性石粉相较于酸性石粉来说更容易被吸附。
Abstract:
In order to solve the problem of poor reproducibility of test results caused by the non-standardized test operation and test steps of the column wick method used in the aggregate surface energy adhesion test, six kinds of test liquids(chloroform solution, toluene solution, diiodomethane solution), weak polarity(formamide solution, ethylene glycol solution), strong polarity(distilled water)and aggregate powders from two kinds of sedimentary rocks(A limestone, B limestone)and three kinds of magmatic rocks(diorite, basalt, granite), which are commonly used as aggregates in pavement engineering, were selected for the columnar wick method test. Combined with the test principle and test phenomenon of the column wick method, the contact angle influence of the factors of powder vibration time, test liquid, aggregate powder particle size, and aggregate powder composite type was studied. The results show that the contact angle is significantly influenced by the roughness of the aggregate surface, and when compared with the contact angle experiment, the influence of roughness can be excluded by utilizing powder materials in the column wick method. The pore channel formed by aggregate powder is found to be most stable, after a vertical vibration height of 3 cm and a vibration time of 6 min in the columnar wick method. The larger the dispersion component of the test liquid accounts for, the larger the formation of molecular forces. This results in a progressively smaller contact angle with the aggregate powder, which is prone to unreasonable contact angle results and should be avoided. The particle size of the aggregate powder directly affects the measurement of the contact angle, and selecting a size of 0.5 mm is deemed optimal for contact angle measurement. Moreover, selecting powder with a particle size between0.04 to 0.075 mm as test samples can reduce test operation errors and result dispersion, thus enhancing the repeatability and reproducibility of the column wick method test. Through the surface energy test of acid-base composite mineral powder, it is observed that alkaline stone powder is more readily adsorbed compared to acidic stone powder.8 tabs, 10 figs, 30 refs.

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备注/Memo

备注/Memo:
收稿日期:2023-10-12
基金项目:国家自然科学基金项目(51868042); 甘肃省高等学校产业支撑项目(2020C-13); 宁夏回族自治区重点研发计划项目(2022BDE02010); 2023年度甘肃省优秀研究生“创新之星”项目(2023CXZX-605); 内蒙古自治区交通运输科学发展研究院开放基金项目(2023KFJJ-006)
作者简介:刘振正(1989-),男,内蒙古呼和浩特人,工学博士研究生,E-mail:707869886@qq.com。
通讯作者:李 波(1981-),男,宁夏中卫人,教授,工学博士,E-mail:8857807@qq.com。
更新日期/Last Update: 2024-12-30