Development and mechanical behaviour of ultra-high-performance seawater sea-sand concrete

Teng, Jin-Guang1,2; Xiang, Yu1; Yu, Tao3; Fang, Zhi4

2019-07-03

10.1177/1369433219858291

ADVANCES IN STRUCTURAL ENGINEERING   影响因子和分区

1369-4332

2048-4011

Ultra-high-performance concrete is typically defined as an advanced cementitious material that has a compressive strength of over 150 MPa and superior durability. This article presents the development of a new type of ultra-high-performance concrete, namely, ultra-high-performance seawater sea-sand concrete. The development of ultra-high-performance seawater sea-sand concrete addresses the challenges associated with the shortage of freshwater, river-sand and coarse aggregate in producing concrete for a marine construction project. When used together with corrosion-resistant fibre-reinforced polymer composites, the durability of the resulting structures (i.e. hybrid fibre-reinforced polymer-ultra-high-performance seawater sea-sand concrete structures) in a harsh environment can be expected to be outstanding. The ultra-high strength of ultra-high-performance seawater sea-sand concrete and the unique characteristics of fibre-reinforced polymer composites also offer tremendous opportunities for optimization towards new forms of high-performance structures. An experimental study is presented in this article to demonstrate the concept and feasibility of ultra-high-performance seawater sea-sand concrete: ultra-high-performance seawater sea-sand concrete samples with a 28-day cube compressive strength of over 180 MPa were successfully produced; the samples were made of seawater and sea-sand, but without steel fibres, and were cured at room temperature. The experimental programme also examined the effects of a number of relevant variables, including the types of sand, mixing water and curing water, among other parameters. The mini-slump spread, compressive strength and stress-strain curve of the specimens were measured to clarify the effects of experimental variables. The test results show that the use of seawater and sea-sand leads to a slight decrease in workability, density and modulus of elasticity; it is also likely to slightly increase the early strength but to slightly decrease the strengths at 7 days and above. Compared with freshwater curing, the seawater curing method results in a slight decrease in elastic modulus and compressive strength.

concrete mix proportion sea-sand seawater seawater sea-sand concrete ultra-high-performance concrete

SCI ; EI

英语

ESI高被引

通讯

Hong Kong Polytechnic University[1-BBAG]

Construction & Building Technology ; Engineering

Construction & Building Technology ; Engineering, Civil

WOS:000478541200001

SAGE PUBLICATIONS INC

20192807172809

Bridge decks ; Compressive strength ; Corrosion resistance ; Curing ; Durability ; Elastic moduli ; Fiber reinforced plastics ; Polymers ; Reinforcement ; Sand ; Seawater ; Seawater corrosion ; Shotcreting ; Steel fibers ; Tensile strength

Bridges:401.1 ; Concrete:412 ; Seawater, Tides and Waves:471.4 ; Soils and Soil Mechanics:483.1 ; Metals Corrosion:539.1 ; Chemical Reactions:802.2 ; Polymeric Materials:815.1 ; Fiber Products:819.4 ; Materials Science:951

ENGINEERING

Web of Science

1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China
2.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen, Peoples R China
3.Univ Wollongong, Sch Civil Min & Environm Engn, Wollongong, NSW, Australia
4.Hunan Univ, Coll Civil Engn, Changsha, Hunan, Peoples R China

Teng, Jin-Guang,Xiang, Yu,Yu, Tao,et al. Development and mechanical behaviour of ultra-high-performance seawater sea-sand concrete[J]. ADVANCES IN STRUCTURAL ENGINEERING,2019,22(14):3100-3120.

Teng, Jin-Guang,Xiang, Yu,Yu, Tao,&Fang, Zhi.(2019).Development and mechanical behaviour of ultra-high-performance seawater sea-sand concrete.ADVANCES IN STRUCTURAL ENGINEERING,22(14),3100-3120.

Teng, Jin-Guang,et al."Development and mechanical behaviour of ultra-high-performance seawater sea-sand concrete".ADVANCES IN STRUCTURAL ENGINEERING 22.14(2019):3100-3120.