|Table of Contents|

Microstructure of crack filling material of polymer emulsion superfine cement(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年01期
Page:
16-22
Research Field:
Publishing date:
2010-02-20

Info

Title:
Microstructure of crack filling material of polymer emulsion superfine cement
Author(s):
GUO Yin-chuan1;  SHEN Ai-qin1;  MA Lin2;  ZHU Jian-hui2;  WANG Xiao-fei1
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Material Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, Shaanxi, China
Keywords:
road engineering;  polymer emulsion;  superfine cement;  XRD;  SEM;  DAT;  TG;  microstructure
PACS:
U414.18; TU528.41
DOI:
-
Abstract:
Based on the test on the workability of styrene acrylate copolymer R161 emulsion modified U-type superfine cement, this paper studied the micro-morphology, hydration products and pore structure of R161 modified U-type superfine cement hardened paste mainly by the modern phase testing analysis technique such as X-ray diffraction(XRD)、scanning electron microscope(SEM), differential thermal analysis(DTA), thermo gravimetry analysis(TG)and mercury intrusion porosimetry. This paper also discussed the correlation between the microstructure and macroscopic performance of polymer modified superfine cement. The results showed that the macrograin is refined and gel is increased, then the filling and sealed effect of polymer make the orientation of hydrate in interfacial transition zone of RMFC to be decreased, the pore structure is more reasonably with the structure obviously refined and the total porosity decreased. The microstructure of this new crack repairing material is completely improved. 5 tabs, 13 figs, 9 refs.

References:

[1] 申爱琴.水泥混凝土路面裂缝修补材料研究[D].西安:长安大学,2004.
[2]申爱琴,朱建辉,王晓飞.水泥混凝土路面裂缝修补材料及施工工艺研究(一)——改性水泥修补材料配比及路用性能研究[R].西安:长安大学,2004.
[3]申爱琴,朱建辉,王晓飞.水泥混凝土路面裂缝修补材料及施工工艺研究(二)——修补材料改性机理研究[R].西安:长安大学,2004.
[4]傅 智,李 红.公路水泥混凝土路面施工技术规范(JTG F30—2003)实施与应用指南[M].北京:人民交通出版社,2003.
[5]袁春毅,申爱琴,韩继国,等.磨细矿渣高性能路面混凝土的耐久性[J].中国公路学报,2007,20(5):24-29. YUAN Chun-yi,SHEN Ai-qin,HAN Ji-guo,et al.Durability of high performance pavement concrete with fine slag[J].China Journal of Highway and Transport,2007,20(5):24-29.
[6]熊剑平,申爱琴.聚合物水泥混凝土施工控制因素[J].交通运输工程学报,2008,8(1):42-46,53. XIONG Jian-ping,SHEN Ai-qin.Controlling factors of construction on polymer cement concrete[J].Journal of Traffic and Transportation Engineering,2008,8(1):42-46,53.
[7]田 波,牛开民,穆占领,等.贫混凝土透水基层材料渗透性能室内试验[J].长安大学学报:自然科学版,2008,28(1):14-17. TIAN Bo,NIU Kai-min,MU Zhan-ling,et al.Indoor test on permeability property of permeable lean concrete[J].Journal of Chang'an University:Natural Science Edition,2008,28(1):14-17.
[8]吴国雄,水泥混凝土路面开裂机理及破坏过程研究[D].成都:西南交通大学,2003.
[9]Chandar S,Flodin P.Interactions of polymers and organic admixtures on Portland cement hydration[J].Cement and Concrete Research,1987,17:875-890.

Memo

Memo:
-
Last Update: 2010-02-20