Influence mechanism of further hydration on the compressive strength of ultra-high performance concrete with coarse aggregates

被引：0

作者：

Tang, Zhouyang ^{[1
]}

Liu, Yazhou ^{[1
,2
]}

Kong, Lijuan ^{[1
,2
]}

Xue, Min ^{[1
]}

Song, Panpan ^{[1
]}

Zhang, Zihang ^{[1
]}

Lin, Shichao ^{[1
]}

机构：

[1] Shijiazhuang Tiedao Univ, Sch Mat & Engn, Shijiazhuang 050043, Peoples R China

[2] Shijia Zhuang Tiedao Univ, Hebei Key Lab Adv Mat Transportat Engn & Environm, Shijiazhuang 050043, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 447卷

关键词：

Further hydration; UHPC-CA; Compressive strength; Microstructure; Temperature; Humidity; ENGINEERED CEMENTITIOUS COMPOSITES;

D O I：

10.1016/j.conbuildmat.2024.138063

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A further hydration test was conducted to study the effects of temperature and humidity conditions on the compressive strength and microstructure of ultra-high performance concrete with coarse aggregates (UHPC-CA), while analyzing the mechanisms influencing its compressive strength. The results indicated that the higher temperatures resulted in more significant strength and pore structure variations, with strength and pore structure changes being greater in liquid water environments compared to water vapor environments. The hardness of interfacial transition zone (ITZ) increased initially and then declined. The influence of further hydration on the strength of UHPC-CA was primarily divided into three stages: enhancement, damage and filling. These findings provide a theoretical foundation for the evaluation and design of UHPC materials for long-term service in aquatic environments.

引用

页数：10

共 42 条

[1] Properties of Cement-Based Materials with Low Water-Binder Ratios and Evaluation Mechanism under Further Hydration Effect [J].

An, Mingzhe ;

Liu, Yazhou ;

Zhang, Ge ;

Wang, Yue .

APPLIED SCIENCES-BASEL, 2023, 13 (17)

[2] UHPC evolution, development, and utilization in construction: a review [J].

Bajaber, M. A. ;

Hakeem, I. Y. .

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2021, 10 :1058-1074

[3]

Edvardsen C, 1999, ACI MATER J, V96, P448

[4]

Fu Q.H., 2018, Master's dissertation

[5] New insights into autogenous self-healing in cement paste based on nuclear magnetic resonance (NMR) tests [J].

Huang, Haoliang ;

Ye, Guang ;

Pel, Leo .

MATERIALS AND STRUCTURES, 2016, 49 (07) :2509-2524

[6] Characterization and quantification of self-healing behaviors of microcracks due to further hydration in cement paste [J].

Huang, Haoliang ;

Ye, Guang ;

Damidot, Denis .

CEMENT AND CONCRETE RESEARCH, 2013, 52 :71-81

[7] Water-entrained cement-based materials I. Principles and theoretical background [J].

Jensen, OM ;

Hansen, PF .

CEMENT AND CONCRETE RESEARCH, 2001, 31 (04) :647-654

[8] Numerical and theoretical investigation on the size effect of concrete compressive strength considering the maximum aggregate size [J].

Jin, Liu ;

Yu, Wenxuan ;

Li, Dong ;

Du, Xiuli .

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2021, 192

[9] Effect of mineral admixtures on the resistance to sulfate attack of reactive powder concrete [J].

Ju, Yanzhong ;

Zhang, Hongji ;

Wang, Dehong ;

Kong, Xiangsheng ;

Ma, Yidan ;

Zhang, Xiaolei ;

Bai, Junfeng .

JOURNAL OF CLEANER PRODUCTION, 2024, 440

[10] Secondary curing effect on the hydration of ultra-high performance concrete [J].

Kang, Hyunuk ;

Moon, Juhyuk .

CONSTRUCTION AND BUILDING MATERIALS, 2021, 298

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