Self-healing behavior of high-strength strain-hardening cement-based composites (HS-SHCC) blended with limestone calcined clay cement (LC3)

被引：20

作者：

Wang, Lei ^{[1
,2
]}

Zhu, Zhou ^{[1
]}

Ahmed, Ameer Hamza ^{[1
]}

Liebscher, Marco ^{[1
]}

Zhu, Xiaohong ^{[3
]}

Mechtcherine, Viktor ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Construct Mat, D-01062 Dresden, Germany

[2] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Peoples R China

[3] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 370卷

关键词：

Strain-hardening cement-based composites; (SHCC); Limestone calcined clay cement(LC3); High-performance concrete; Self-healing; self-sealing; Low-carbon and sustainable concrete; Durability; MECHANICAL-PROPERTIES; TENSILE BEHAVIOR; DURABILITY; PERFORMANCE; MICROMECHANICS; RESISTANCE; CONCRETE;

D O I：

10.1016/j.conbuildmat.2023.130633

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Self-healing is an important characteristic of cement-based composites, which is highly related to the safety and service life of construction materials under load and variable environmental conditions. This study investigated the self-healing behavior of ordinary Portland cement-(as Ref) and Limestone Calcined Clay Cement (LC3)-based high-strength, strain-hardening cement-based composites (HS-SHCC) under different exposure conditions. Experimental results showed that wet-dry cycles were favorable for crack healing in both Ref and LC3 HS-SHCC due to the abundant moisture for cement rehydration. However, the new-formed hydration products were weak and fiber bridging in HS-SHCC was not re-built. Thus, the healed pre-cracks were easy to crack again during re-loading. Between Ref and LC3 HS-SHCC, Ref composites showed a favorable self-healing behavior in terms of flexural strength improvement after wet-dry cycles, whereas LC3 composites presented desirable self-healing performance after freeze-thaw cycles due to the discrepancy in reaction products and microstructure. In sum-mary, Ref and LC3 HS-SHCC presented desirable but different self-healing performances under various exposure conditions.

引用

页数：10

共 44 条

[1] Influence of pH on the chloride binding capacity of Limestone Calcined Clay Cements (LC3) [J].

Avet, Francois ;

Scrivener, Karen .

CEMENT AND CONCRETE RESEARCH, 2020, 131

[2] Investigation of C-A-S-H composition, morphology and density in Limestone Calcined Clay Cement (LC3) [J].

Avet, Francois ;

Boehm-Courjault, Emmanuelle ;

Scrivener, Karen .

CEMENT AND CONCRETE RESEARCH, 2019, 115 :70-79

[3] Shear Strength of Compacted Clays as Affected by Mineral Content and Wet-Dry Cycles [J].

Charkley, Frederick Nai ;

Zhang, Kunyong ;

Mei, Guoxiong .

ADVANCES IN CIVIL ENGINEERING, 2019, 2019

[4] Performance of various strain-hardening cement-based composites (SHCC) subject to uniaxial impact tensile loading [J].

Curosu, Iurie ;

Mechtcherine, Viktor ;

Forni, Daniele ;

Cadoni, Ezio .

CEMENT AND CONCRETE RESEARCH, 2017, 102 :16-28

[5] Tensile behavior of high-strength strain-hardening cement-based composites (HS-SHCC) made with high-performance polyethylene, aramid and PBO fibers [J].

Curosu, Iurie ;

Liebscher, Marco ;

Mechtcherine, Viktor ;

Bellmann, Cornelia ;

Michel, Stefan .

CEMENT AND CONCRETE RESEARCH, 2017, 98 :71-81

[6] Effect of fiber properties and matrix composition on the tensile behavior of strain-hardening cement-based composites (SHCCs) subject to impact loading [J].

Curosu, Iurie ;

Mechtcherine, Viktor ;

Millon, Oliver .

CEMENT AND CONCRETE RESEARCH, 2016, 82 :23-35

[7] Mechanical properties and durability performance of concretes with Limestone Calcined Clay Cement (LC3) [J].

Dhandapani, Yuvaraj ;

Sakthivel, T. ;

Santhanam, Manu ;

Gettu, Ravindra ;

Pillai, Radhakrishna G. .

CEMENT AND CONCRETE RESEARCH, 2018, 107 :136-151

[8] Durability of concrete members reinforced with steel-FRP composite bars under dry-wet cycles of seawater [J].

Ding, Lining ;

Lei, Mengke ;

Wang, Xin ;

Shi, Yuwei ;

Zhu, Zhongguo ;

Yu, Pancheng ;

Wu, Zhishen .

STRUCTURES, 2021, 33 :2273-2283

[9] Self-healing in cementitious materials: Materials, methods and service conditions [J].

Huang, Haoliang ;

Ye, Guang ;

Qian, Chunxiang ;

Schlangen, Erik .

MATERIALS & DESIGN, 2016, 92 :499-511

[10] Investigation of self-healing behavior of Engineered Cementitious Composites (ECC) materials [J].

Kan, Li-li ;

Shi, Hui-sheng .

CONSTRUCTION AND BUILDING MATERIALS, 2012, 29 :348-356

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