Mechanical and Thermal Properties of Hybrid Fibre-Reinforced Concrete Exposed to Recurrent High Temperature and Aviation Oil

被引：10

作者：

Hossain, Muhammad Monowar ^{[1
,2
]}

Al-Deen, Safat ^{[1
]}

Hassan, Md Kamrul ^{[1
]}

Shill, Sukanta Kumer ^{[3
]}

Kader, Md Abdul ^{[4
]}

Hutchison, Wayne ^{[5
]}

机构：

[1] Univ New South Wales, Sch Engn & Informat Technol, Canberra, ACT 2610, Australia

[2] Mil Inst Sci & Technol, Civil Engn Dept, Dhaka 1216, Bangladesh

[3] Deakin Univ, Sch Engn, Geelong, Vic 3220, Australia

[4] Australian Natl Univ, Res Sch Phys, Dept Appl Math, Canberra, ACT 2600, Australia

[5] UNSW, Sch Phys Environm & Math Sci, Canberra, ACT 2610, Australia

来源：

MATERIALS | 2021年 / 14卷 / 11期

关键词：

hybrid fibre-reinforced concrete; thermal conductivity; spalling; residual mechanical strength; HIGH-STRENGTH CONCRETE; COMPRESSIVE STRENGTH; CEMENT PASTE; SILICA FUME; STEEL; BEHAVIOR; POLYPROPYLENE; FIRE; POZZOLAN; CRACKING;

D O I：

10.3390/ma14112725

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：

Over the years, leaked fluids from aircraft have caused severe deterioration of airfield pavement. The combined effect of hot exhaust from the auxiliary power unit of military aircraft and spilt aviation oils have caused rapid pavement spalling. If the disintegrated concreted pieces caused by spalling are sucked into the jet engine, they may cause catastrophic damage to the aircraft engine or physical injury to maintenance crews. This study investigates the effectiveness of incorporating hybrid fibres into ordinary concrete to improve the residual mechanical and thermal properties to prevent spalling damage of pavement. Three fibre-reinforced concrete samples were made with micro steel fibre and polyvinyl alcohol fibre with a fibre content of zero, 0.3%, 0.5% and 0.7% by volume fraction. These samples were exposed to recurring high temperatures and aviation oils. Tests were conducted to measure the effects of repeated exposure on the concrete's mechanical, thermal and chemical characteristics. The results showed that polyvinyl alcohol fibre-, steel fibre- and hybrid fibre-reinforced concrete suffered a 52%, 40% and 26.23% of loss of initial the compressive strength after 60 cycles of exposure to the conditions. Moreover, due to the hybridisation of concrete, flexural strength and thermal conductivity was increased by 47% and 22%. Thus, hybrid fibre-reinforced concrete performed better in retaining higher residual properties and exhibited no spalling of concrete.

引用

页数：24