|Table of Contents|

Road performance of cement concrete with nano-SiO2(PDF)

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

Issue:
2010年03期
Page:
41-46
Research Field:
Publishing date:
2010-06-20

Info

Title:
Road performance of cement concrete with nano-SiO2
Author(s):
LI Peng-fei;  ZHANG Qing;  LI Jing-jing
School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
road engineering;  nano-SiO2;  cement concrete;  road performance
PACS:
U416.216
DOI:
-
Abstract:
In order to study the influence of nano-SiO2 on road performance of cement concrete, through analyzing the modified mechanism of cement concrete with nano-SiO2 and indoor test, the compressive and flexural strength, fracture toughness, fatigue life and shrinkage were tested. The test results show that,the compressive strength is not obviously improved, and the flexural strength is increased a little, but the fracture toughness and fatigue life is significantly enhanced. If the mixing content of nano-SiO2 is 0.75%, the flexural strength and fracture toughness is respectively increased by 7.4% and 39.3%, under the stress level 0.75, 0.80 and 0.85, the fatigue life is respectively improved by 48.4%, 58.6% and 68.6%. The shrinkage of cement concrete mixing nano-SiO2 is more obvious than common cement concrete,and the shrinkage of three nano-SiO2 cement concretes is respectively increased by 198.7%, 73.0% and 66.8%. 9 tabs, 4 figs, 13 refs.

References:

[1] 熊剑平,申爱琴,魏越强,等.聚合物水泥混凝土的路用性能[J].长安大学学报:自然科学版,2007,27(6):24-28. XIONG Jian-ping,SHEN Ai-qin,WEI Yue-qiang,et al.Road performance of polymer cement concrete(PPC)[J].Journal of Chang'an University:Natural Science Edition,2007,27(6):24-28.
[2]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.
[3]沙爱民,胡力群.半刚性基层材料的结构特点[J].中国公路学报,2008,21(4):1-5. SHA Ai-min,HU LI-qun.Structural characteristics of semi-rigid base course material[J].China Journal of Highway and Transport,2008,21(4):1-5.
[4]王文军,郭昌生,朱向荣,等.纳米硅粉对水泥硬化浆体的改性研究[J].新型建筑材料,2008(6):53-56. WANG Wen-jun,GUO Chang-sheng,ZHU Xiang-rong,et al.Study on reinforcement of nanometer silica fume in hardened cement paste[J].New Building Materials,2008(6):53-56.
[5]叶 青,张泽南,陈荣升,等.纳米SiO2与水泥硬化浆体中Ca(OH)2的反应[J].硅酸盐学报,2003,31(5):517-522. YE Qing,ZHANG Ze-nan,CHEN Rong-shen,et al.Interaction of nano-SiO2 with Portlandite at interface between hardened cement paste and aggregate[J].Journal of the Chinese Ceramic Society,2003,31(5):517-522.
[6]仲晓林,孙跃升,仲朝明,等.纳米粘土材料对水泥混凝土作用机理的研究[J].混凝土,2006(4):5-6. ZHONG Xiao-lin,SUN Yue-sheng,ZHONG Chao-ming,et al.Study on the effect mechanism of nanometer clay material to the cement concrete effect[J].Concrete,2006(4):5-6.
[7]Alexander M G,Magee B J.Durability performance of concrete containing condensed silica fume[J].Cement and Concrete Research,1999(29):917-922.
[8]Puppala A J,Mohammad L N,Allen A.Permanent deformation characterization of subgrade soils from RLT test[J].Journal of Material in Civil Engineering,1999,11(4):274-282.
[9]Brown E R,Bassett C E.Effects of maximum aggregate size on rutting potential and other properities of asphalt-aggregate mixtures[J].Transportation Research Record,1990,1259:107-119.
[10]张立德,牟季美.纳米材料和纳米结构[M].北京:科学出版社,2001.
[11]许并社.纳米材料及应用技术[M].北京:化学工业出版社,2004.
[12]陈忠达,梁 峰,刘根昌,等.硅粉路面混凝土的疲劳特性[J].长安大学学报:自然科学版,2005,25(1):1-5. CHEN Zhong-da,LIANG Feng,LIU Gen-chang,et al.Fatigue character of silicon-powder road concrete[J].Journal of Chang'an University:Natural Science Edition,2005,25(1):1-5.
[13]张 鹏,李清富,黄承逵.聚丙烯纤维稳定碎石收缩性能[J].交通运输工程学报,2008,8(4):30-34. ZHANG Peng,LI Qing-fu,HUANG Cheng-kui.Shrinkage properties of cement stabilized macadam reinforced with polypropylene fiber[J].Journal of Traffic and Transportation Engineering,2008,8(4):30-34.

Memo

Memo:
-
Last Update: 2010-06-20