影响乳化沥青对集料渗透的参数评价与识别

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2021-07-20 DOI:10.1080/14488353.2021.1945258
Mohsen Aboutalebi Esfahani, Seyed Mohammad Navid Khoddami
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引用次数: 0

摘要

底漆的渗透性增加了亚沥青层的稳定厚度,使水更难渗透。因此,本研究的目的是确定影响阳离子乳液沥青(CEB)渗透的有效参数,并研究它们的影响。使用了短期和长期渗透测试。为了更好地评价,在干燥和潮湿条件下选择了两种类型的二氧化硅和石灰石骨料。为了更好地比较侵彻结果,还测量了MC250沥青的侵彻度。结果表明:在确定的参数中,最大渗透增量受渗透时间、骨料材料、骨料湿度、底漆类型、煤油含量和与乳化剂含量和纯沥青含量相等的胶体磨速度的影响。此外,提高肥皂温度的影响最小。另一个结果是CEB在石灰石骨料中的渗透在所有情况下都是不合适的。然而,在几乎所有情况下,CEB在硅骨料中的渗透提供了最低要求,因此水分是最有效地增加它。MC250在石灰石骨料中的渗透值仅适用于潮湿和长期条件。
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Evaluation and identification of parameters affecting the penetration of emulsion bitumen on aggregates
ABSTRACT More penetration of the prime coat increases the stabilisation thickness of the sub-asphalt layer and makes it more difficult for water to penetrate. Therefore, the purpose of this study is to identify the effective parameters on the penetration of Cationic Emulsion Bitumen (CEB) and investigate their effects. Short and long-term penetration tests are used. For better evaluation, two types of silica and limestone aggregates are selected in dry and wet conditions. To better compare the results of penetration, the penetration of MC250 cutback bitumen was also measured. The results show that among the identified parameters, the maximum penetration increase is influenced by the time of penetration, the material of aggregates, aggregate humidity, type of prime coat, kerosene percentage, and colloid mill speed which is equal to emulsifier percentage and the percentage of pure bitumen. Also, the least effect is observed for increasing soap temperature. Another result is that the CEB penetration in limestone aggregates is inappropriate in all cases. However, the penetration of CEB in silica aggregates in almost all cases provides minimum requirement so that the moisture being most effective to increase it. The value of MC250 penetration in limestone aggregates is only appropriate for wet and long-term conditions.
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来源期刊
CiteScore
3.90
自引率
7.70%
发文量
31
期刊最新文献
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