|本期目录/Table of Contents|

[1]屠艳平,程子扬,邓 丽*,等.纳米SiO2对橡胶再生水泥胶砂性能的影响[J].武汉工程大学学报,2022,44(03):341-345.[doi:10.19843/j.cnki.CN42-1779/TQ.202109006]
 TU Yanping,CHENG Ziyang,DENG Li*,et al.Effect of Nano-SiO2 on Properties of Rubber-Recycled Cement Mortar[J].Journal of Wuhan Institute of Technology,2022,44(03):341-345.[doi:10.19843/j.cnki.CN42-1779/TQ.202109006]
点击复制

纳米SiO2对橡胶再生水泥胶砂性能的影响(/HTML)
分享到:

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
44
期数:
2022年03期
页码:
341-345
栏目:
资源与土木工程
出版日期:
2022-06-30

文章信息/Info

Title:
Effect of Nano-SiO2 on Properties of Rubber-Recycled Cement Mortar
文章编号:
1674 - 2869(2022)03 - 0341 - 05
作者:
屠艳平程子扬邓 丽*程书凯徐 雄陈国夫
武汉工程大学土木工程与建筑学院,湖北 武汉 430074
Author(s):
TU YanpingCHENG ZiyangDENG Li*CHENG ShukaiXU XiongCHEN Guofu
School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074,China
关键词:
橡胶再生水泥胶砂再生细骨料纳米SiO2抗压强度
Keywords:
rubber-recycled cement mortar recycled fine aggregate nano-SiO2 compressive strength
分类号:
TU528
DOI:
10.19843/j.cnki.CN42-1779/TQ.202109006
文献标志码:
A
摘要:
采用纳米SiO2对水泥进行等质量替代,研究其对橡胶再生水泥胶砂(RRCM)抗压强度、抗折强度和折压比的影响,同时采用扫描电子显微镜对RRCM的微观结构形貌进行表征。结果表明:橡胶颗粒和再生细骨料(RFA)会降低水泥胶砂(CM)的抗压强度、抗折强度和折压比,导致CM的延性变差;纳米SiO2替代水泥后,RRCM的抗压强度、抗折强度和折压比得到显著提升,且其微观结构更加致密;当纳米SiO2的替代率为3%时,RRCM的28 d的抗压强度、抗折强度、折压比分别提升14.1%、39.7%、22.5%,水泥砂浆和RFA之间的界面过渡区更加密实,水化产物分布均匀,孔隙明显减少,具有较好的力学性能和经济效益。
Abstract:
Compressive strength,flexural strength and flexural-compression ratio of the rubber-recycled cement mortar (RRCM) with nano-SiO2 replacing cement in same content were investigated,and its microstructural morphologies were characterized by scanning electron microscopy. The results indicate that the incorporation of rubber particles and recycled fine aggregates(RFA) reduces the compressive strength,flexural strength,and flexural-compression ratio of cement mortar,leading to the deterioration of the ductility. After the nano-SiO2 is substituted for cement,the compressive strength,flexural strength and flexural-compression ratio of RRCM are significantly improved,and its microstructure is more compact. When the substitution rate of nano-SiO2 is 3%,the compressive strength,flexural strength and tensile compression ratio of RRCM in 28 d increase by 14.1%,39.7% and 22.5% respectively,the interface transition zone between cement mortar and RFA is more compact,the hydration products are evenly distributed,and the pores are obviously reduced,proving that the RRCM has better mechanical properties and economic benefits.

参考文献/References:

[1] 肖建庄,马旭伟,刘琼,等.全再生混凝土概念的衍化与研究进展[J].建筑科学与工程学报,2021,38(2):1-15.

[2] NEDELJKOVI? M,VISSER J,?AVUJA B,et al. Use of fine recycled concrete aggregates in concrete:a critical review [J]. Journal of Building Engineering,2021,38:102196:1-27.
[3] XIAO J Z, MA Z M, SUI T B ,et al. Mechanical properties of concrete mixed with recycled powder produced from construction and demolition waste [J]. Journal of Cleaner Production,2018,188:720-731.
[4] 雅思,郑建岚,游帆.再生骨料强化方法研究进展[J].材料导报,2021,35(5):5053-5061.
[5] 李博,李玉博,肖建庄.再生细骨料地基动力特性试验研究[J].建筑结构学报,2021,42(增刊1):523-530.
[6] 李贞,刘加平,肖建庄.再生细骨料对砂浆自收缩与干燥收缩的正负效应[J].建筑结构学报,2020,41(增刊2):427-435.
[7] 黄开林,李书进,臧旭航.不同类型再生细骨料对保温混凝土力学性能的影响[J].硅酸盐通报,2021,40(7):2341-2347,2379.
[8] XU X,LENG Z,LAN J T,et al. Sustainable practice in pavement engineering through value-added collective recycling of waste plastic and waste tyre rubber [J]. Engineering,2021,7(6):857-867.
[9] 杨荣周,徐颖,陈佩圆,等.SHPB劈裂试验下橡胶水泥砂浆的动态力学、能量特性及破坏机理试验研究[J].材料导报,2021,35(10):10062-10072.
[10] 张静,郭娟.橡胶改性水泥砂浆性能研究[J].中外公路,2016,36(1):298-300.
[11] 师广岭,张海波,尚海涛,等.废旧橡胶水泥砂浆力学性能研究及改善[J].硅酸盐通报,2015,34(8):2419-2423.
[12] 解志益,周涵,李庆超,等.纳米硅溶胶的制备及在水泥基材料中的应用研究进展[J].材料导报,2020,34(增刊2):1160-1163.
[13] LI W G,LONG C,TAM V W Y,et al. Effects of nano-particles on failure process and microstructural properties of recycled aggregate concrete [J]. Construction and Building Materials,2017,142:42-50.
[14] POURJAVADI A, FAKOORPOOR S M,HOSSEINI P,et al. Interactions between superabsorbent polymers and cement-based composites incorporating colloidal silica nanoparticles [J]. Cement & Concrete Composites,2013,37:196-204.
[15] XU Z H, ZHOU Z H, DU P, et al. Effects of nano-silica on hydration properties of tricalcium silicate [J]. Construction and Building Materials,2016,125:1167-1177.
[16] HOSSEINI P, BOOSHEHRIAN A, MADARI A. Developing concrete recycling strategies by utilization of nano-SiO2 particles [J]. Waste & Biomass Valorization,2011,2(3):347-355.
[17] JI T. Preliminary study on the water permeability and microstructure of concrete incorporating nano-SiO2 [J]. Cement & Concrete Research,2005,35(10):1943-1947.
[18] 肖建庄,陈祥磊,李标,等.纳米SiO2和粉煤灰复掺对再生混凝土性能的影响[J].建筑科学与工程学报,2020,37(1):26-32.
[19] MEI J P,MA B G,TAN H B,et al. Influence of steam curing and nano silica on hydration and microstructure characteristics of high volume fly ash cement system [J]. Construction and Building Materials,2018,171:83-95.
[20] 李振东,孟丹,王智鹏,等.纳米二氧化硅改性混凝土宏观性能及微观调控机理分析[J].硅酸盐通报,2020,39(7):2145-2153.
[21] 胡建城,吕阳,何晨昊,等.纳米二氧化硅粉末对水泥-粉煤灰体系泡沫混凝土力学性能及水化的影响[J].硅酸盐通报,2019,38(5):1390-1394.
[22] CAI Y M,HOU P K,CHENG X,et al. The effects of nano SiO2 on the properties of fresh and hardened cement-based materials through its dispersion with silica fume [J]. Construction and Building Materials,2017,148:770-780.
[23] 林培桐,曾宇,赵永钢,等.纳米二氧化硅改性大掺量矿粉-水泥胶凝体系性能与微结构研究[J].硅酸盐通报,2021,40(2):384-391,400.
[24] 张恩,路国运,杨会伟,等.聚丙烯纤维增强橡胶混凝土工作性能及力学性能试验研究[J].混凝土,2021(3):86-89.
[25] 程子扬,李敬芳,陈旭勇,等.骨料含水量的差异对于粉煤灰再生混凝土性能的影响[J].武汉工程大学学报,2021,43(5):534-538,556.
[26] 沈才华,钱晋,陈晓峰,等.纤维掺量对PVA纤维混凝土力学参数的影响及压缩延性指标的计算方法[J].硅酸盐通报,2020,39(10):3152-3160.

相似文献/References:

备注/Memo

备注/Memo:
稿日期:2021-09-04
基金项目:武汉工程大学第十二届研究生教育创新基金(CX2020109);武汉工程大学校内科学基金(K201932&K2021031)
作者简介:屠艳平,博士,副教授。E-mail:[email protected]
*通讯作者:邓 丽,硕士,助理实验师。E-mail:[email protected]
引文格式:屠艳平,程子扬,邓丽,等.纳米SiO2对橡胶再生水泥胶砂性能的影响[J]. 武汉工程大学学报,2022,44(3):341-345.

更新日期/Last Update: 2022-06-29