Comparison on the properties of ITZs in fly ash-based geopolymer and Portland cement concretes with equivalent flowability

被引：94

作者：

Luo, Zhiyu ^{[1
]}

Li, Wengui ^{[1
]}

Wang, Kejin ^{[2
]}

Castel, Arnaud ^{[1
]}

Shah, Surendra P. ^{[3
]}

机构：

[1] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

[2] Iowa State Univ, Dept Civil Construct & Environm Engn, Ames, IA 50011 USA

[3] Univ Texas Arlington, Ctr Adv Construct Mat, Arlington, TX 76019 USA

来源：

CEMENT AND CONCRETE RESEARCH | 2021年 / 143卷

基金：

澳大利亚研究理事会;

关键词：

Geopolymer concrete; Interfacial transition zone (ITZ); Nanoindentation; Micromechanical properties; Microstructure;

D O I：

10.1016/j.cemconres.2021.106392

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper aims to compare the properties of interfacial transition zones (ITZs) in Portland cement (PC) concrete and geopolymer concrete. Portland cement and geopolymer pastes were designed with the equivalent flowability to provide similar mix and casting condition of ITZs. Two types of modelled ITZs were prepared to facilitate the nanoindentations across ITZs, microstructural characterization, and comparison on the properties of ITZs with less influential factors. The results showed that the interfacial bonding of ITZs between geopolymer matrix and aggregate is relatively stronger than the counterpart in the PC concrete. There is a high amount of crystalline hydration products in the ITZs of PC concrete, but a layer gel-rich paste with denser microstructures in the ITZs of geopolymer concrete. Additionally, the interface morphology and nanoindentation analysis indicate that the property of ITZs in the modelled geopolymer concrete is not poorer than that of the corresponding geopolymer paste.

引用

下载

页数：14

共 50 条

[21] On the development of fly ash-based geopolymer concrete
Hardjito, D
Wallah, SE
Sumajouw, DMJ
Rangan, BV
ACI MATERIALS JOURNAL, 2004, 101 (06) : 467 - 472
[22] Lightweight fly ash-based geopolymer concrete
Abdulkareem, Omar A.
Al Bakri, A. M. Mustafa
Kamarudin, H.
Nizar, I. Khairul
ADVANCED MATERIALS ENGINEERING AND TECHNOLOGY, 2012, 626 : 781 - +
[23] A Comprehensive Review on Fly Ash-Based Geopolymer
Luhar, Ismail
Luhar, Salmabanu
JOURNAL OF COMPOSITES SCIENCE, 2022, 6 (08):
[24] Fly ash/Kaolin based geopolymer green concretes and their mechanical properties
Okoye, F. N.
Durgaprasad, J.
Singh, N. B.
DATA IN BRIEF, 2015, 5 : 739 - 744
[25] Thermal Behavior of Portland Cement and Fly Ash-Metakaolin-Based Geopolymer Cement Pastes
Duan, Ping
Yan, Chunjie
Zhou, Wei
Luo, Wenjun
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 2015, 40 (08) : 2261 - 2269
[26] An Evaluation Carbon Footprint in Fly Ash Based Geopolymer Cement and Ordinary Portland Cement Manufacture
Chan, C. C. S.
Thorpe, D.
Islam, M.
2015 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT (IEEM), 2015, : 254 - 259
[27] Thermal Behavior of Portland Cement and Fly Ash–Metakaolin-Based Geopolymer Cement Pastes
Ping Duan
Chunjie Yan
Wei Zhou
Wenjun Luo
Arabian Journal for Science and Engineering, 2015, 40 : 2261 - 2269
[28] Rheology, Setting Time, and Compressive Strength of Class F Fly Ash-Based Geopolymer Binder Containing Ordinary Portland Cement
Nikvar-Hassani, Arash
Manjarrez, Lino
Zhang, Lianyang
JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2022, 34 (01)
[29] Dielectric properties and temperature profile of fly ash-based geopolymer mortar
Jumrat, Saysunee
Chatveera, Burachat
Rattanadecho, Phadungsak
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2011, 38 (02) : 242 - 248
[30] Effects of Curing Conditions on Properties of Fly Ash-based Geopolymer Concrete
Ye, Xue-Hua
Xu, Jin-Yu
PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE AND APPLICATIONS (ICMSA 2015), 2015, 3 : 210 - 215

← 1 2 3 4 5 →