Influence of Polypropylene and Steel Fibers on the Performance and Crack Repair of Self-Compacting Concrete

被引：18

作者：

Abed, Mohammed A. ^{[1
]}

Fort, Jan ^{[2
]}

Naoulo, Abdulkarim ^{[3
]}

Essa, Amr ^{[3
]}

机构：

[1] Rutgers State Univ, Dept Civil & Environm Engn, Piscataway, NJ 08854 USA

[2] Czech Tech Univ, Fac Civil Engn, Dept Mat Engn & Chem, Prague 16629, Czech Republic

[3] Budapest Univ Technol & Econ, Dept Struct Engn, H-1111 Budapest, Hungary

来源：

MATERIALS | 2021年 / 14卷 / 19期

关键词：

epoxy injection; polypropylene fiber; steel fiber; mechanical properties; crack repair; workability; HIGH-STRENGTH CONCRETE; MECHANICAL-PROPERTIES; DURABILITY PROPERTIES; REINFORCED-CONCRETE; FRACTURE-BEHAVIOR; EPOXY INJECTION; WORKABILITY; RESISTANCE; CAPACITY;

D O I：

10.3390/ma14195506

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The research reported in this paper aims to evaluate the epoxy injection technique used to strengthen fiber-reinforced self-compacting concrete (FRSCC) with high strength. This method is carried out on ruptured concrete specimens to assess the efficiency of the epoxy resin adhesive injection retrofitting technique for strength and stiffness. Five FRSCC mixes were designed and placed using different types (steel and polypropylene) and contents (0%, 0.25%, and 0.45% by volume) of fibers. The fresh and mechanical properties in addition to the microstructure of produced mixes were evaluated to assess the impact of fibers on the behavior of FRSCC. Results showed that the workability of FRSCC is reduced by increasing steel or polypropylene fiber content; however, the rheological characteristics of placed mixes satisfied the European Guidelines for Self-Compacting Concrete recommendation for fresh concrete. Also, splitting tensile, flexural, and shear strengths were enhanced by increasing fiber content. The simultaneous application of epoxy injection in FRSCC for repairing damaged concrete beams was shown to be highly effective.

引用

页数：15

共 50 条

[1]

Abed M., 2018, CONCRETE STRUCTURES, V19, P22, DOI [10.32970/CS.2018.1.4, DOI 10.32970/CS.2018.1.4]

[2]

Abed M.A., 2019, THESIS BUDAPEST U TE

[3] Mechanical and durability properties of high-strength concrete containing steel and polypropylene fibers [J].

Afroughsabet, Vahid ;

Ozbakkaloglu, Togay .

CONSTRUCTION AND BUILDING MATERIALS, 2015, 94 :73-82

[4] Repair of cracks in simply supported beams using epoxy injection technique [J].

Ahmad, Saeed ;

Elahi, Ayub ;

Barbhuiya, Salim ;

Farooqi, Yaqub .

MATERIALS AND STRUCTURES, 2013, 46 (09) :1547-1559

[5] On the mechanical properties and fracture behavior of polyolefin fiber-reinforced self-compacting concrete [J].

Alberti, M. G. ;

Enfedaque, A. ;

Galvez, J. C. .

CONSTRUCTION AND BUILDING MATERIALS, 2014, 55 :274-288

[6]

American Concrete Institute, 1992, 363R92 ACI

[7] Investigating the mechanical and microstructure properties of fibre-reinforced lightweight concrete under elevated temperatures [J].

Amin, Mohamed ;

Tayeh, Bassam A. ;

agwa, Ibrahim saad .

CASE STUDIES IN CONSTRUCTION MATERIALS, 2020, 13 (13)

[8]

[Anonymous], 2009, 123903 BSI EN

[9]

[Anonymous], 2014, ACSM's Resource Manual for Guidelines for Exercise Testing and Prescriptions, V7th, P503

[10]

[Anonymous], 2004, 546R04 ACI

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