Influence of Paste Volume, Type of Release Agents, and Contact Pressure on the Quality of Concrete Surfaces

被引：2
作者：
Bouharoun, Samir [1 ]
机构：
[1] IUT Bethune, Lille Nord France EA 4515, LGCgE, F-62400 Bethune, France
来源：
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2014年 / 39卷 / 04期
关键词：
Cement grains; Tribology; Friction; Interface; Release agent; Tearing of concrete; Oils wettability;
D O I：
10.1007/s13369-014-0966-1
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Each concrete component plays a very important role on tribological behavior in the vicinity of the formwork surfaces. The objective of this paper was to understand the influence of paste volume, type of release agent, and contact pressure on the mechanisms that occur at the concrete-formwork interface. Two concretes with 28 and 34% of paste were formulated to study the influence of fines content on the friction of fresh concrete against formwork wall. Friction tests were performed using an apparatus that can reproduce the conditions of job sites. The effect of interface lubrication on friction and on the quality of concrete surfaces was studied using two release agents (vegetable oil and mineral oil). The results show that the friction is governed by the cement grains and the cement's water content. Moreover, the tearing of concrete at hardness state was directly linked to the friction intensity.
引用
收藏
页码：2695 / 2706
页数：12
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