Mechanical Properties of Structural Lightweight Aggregate Concrete Containing Low Volume Steel Fiber

2014 ◽  
Vol 39 (5) ◽  
pp. 3579-3590 ◽  
Author(s):  
Mahmoud Hassanpour ◽  
Payam Shafigh ◽  
Hilmi Bin Mahmud
Keyword(s):  
Mechanical Properties ◽  
Steel Fiber ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Low Volume ◽  
Structural Lightweight Aggregate Concrete

scholarly journals Experimental Study of High-Strength Steel Fiber Lightweight Aggregate Concrete on Mechanical Properties and Toughness Index

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Yanxia Ye ◽  
Jilei Liu ◽  
Zhiyin Zhang ◽  
Zongbin Wang ◽  
Qiongwu Peng
Keyword(s):  
Mechanical Properties ◽  
Volume Content ◽  
High Strength Steel ◽  
Steel Fiber ◽  
Lightweight Aggregate ◽  
High Strength ◽  
Steel Fibers ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Toughness Index

In this paper, three different kinds of steel fibers, being micro (M), end-hooked (H), and corrugated (C), commonly used in engineering applications, are added to high-strength lightweight aggregate concrete (HLAC) to study the effects of steel fiber and volume content ratio of fiber on the compressive, splitting tensile, and flexural strength of HLAC. The range of steel fiber volume content fraction studied is 0.5% to 2.0%. The research shows that different types of steel fiber have different effects on the mechanical properties and toughness of HLAC. M steel fibers have the best reinforcing performance on the mechanical properties. The study also shows that the toughness of M steel fibers is the best with the same fiber content. The toughening effect of H and C steel fibers can only reach 2/3 and 1/2 of M steel fibers, respectively. At the end of this paper, the unified strength formula and toughness index of these three kinds of high-strength steel fiber lightweight aggregate concrete (HSLAC) with different fiber contents are given to provide a reference for engineering practice and design.

scholarly journals Mechanical Properties of Steel Fiber Reinforced all Lightweight Aggregate Concrete

2018 ◽  
Vol 359 ◽  
pp. 012039
Author(s):  
Y M Yang ◽  
J Y Li ◽  
Y Zhen ◽  
Y N Nie ◽  
W L Dong
Keyword(s):  
Mechanical Properties ◽  
Steel Fiber ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fiber Reinforced ◽  
Aggregate Concrete

Experimental Study on Mechanical Properties of Hybrid Fiber Reinforced Full Lightweight Aggregate Concrete

2011 ◽  
Vol 197-198 ◽  
pp. 911-914 ◽  
Author(s):  
Li Yun Pan ◽  
Hao Yuan ◽  
Shun Bo Zhao
Keyword(s):  
Mechanical Properties ◽  
Apparent Density ◽  
Steel Fiber ◽  
Polypropylene Fiber ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fiber Reinforced ◽  
Mass Content ◽  
Hybrid Fiber ◽  
Aggregate Concrete

Tests were carried out to study mechanical properties of hybrid fiber reinforced full lightweight aggregate concrete (HFRFLAC), the hybrid fiber was composed by steel fiber and polypropylene fiber, the expanded-shale and lightweight sand were used as coarse and fine aggregates. The apparent density and strengths in cubic compressive, splitting tensile and flexural tensile states of HFRFLAC were obtained. The results show that the average dry apparent density increases with the increasing cement content, which is much more affected by fraction of steel fiber by volume than mass content of polypropylene fiber; the tensile strengths increase somewhat with the increasing mass content of polypropylene fiber; all of the strengths increase with the increasing fraction of steel fiber by volume, and obvious are the enhancement of tensile strengths; there are somewhat relevance between the effects of polypropylene fiber and steel fiber on mechanical properties of HFRFLAC.

scholarly journals The Effects of Additives to Lightweight Aggregate on the Mechanical Properties of Structural Lightweight Aggregate Concrete

2021 ◽  
Vol 31 (1) ◽  
pp. 139-160
Author(s):  
Mehdi Khoshvatan ◽  
Majid Pouraminia
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Specific Gravity ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Lightweight Aggregates ◽  
Structural Concrete ◽  
Aggregate Concrete ◽  
Structural Lightweight Aggregate Concrete

Abstract In the paper, the effects of different percentages of additives (perlite, LECA, pumice) on the mechanical properties of structural lightweight aggregate concrete were tested and evaluated. For the research, 14 mixing designs with different amounts of aggregate, water, and cement were made. Experimental results showed that the specific gravity of lightweight structural concrete made from a mixture of LECA, pumice, and perlite aggregates could be 25-30% lighter than conventional concrete. Lightweight structural concrete with a standard specific gravity can be achieved by using a combination of light LECA with perlite lightweight aggregates (LA) and pumice with perlite in concrete. The results indicated that LECA lightweight aggregates show more effective behavior in the concrete sample. Also, the amount of cement had a direct effect on increasing the strength regardless of the composition of LAs. The amount of cement causes compressive strength to increase. Furthermore, the stability of different experimental models increased from 156 to 345 kg m 3 while increasing the amount of cement from 300 to 400 kg m 3 in the mixing designs of LECA and perlite for W/C ratios of 0.3, 0.35, and 0.4. For a fixed amount of cement equal to 300 kg, the compressive strength is reduced by 4% by changing the water to cement ratio from 0.5 to 0.4. The compression ratios of strength for 7 to 28 days obtained in this study for lightweight concrete were between 0.67-0.8. Based on the rate of tensile strength to compressive strength of ordinary concretes, which is approximately 10, this ratio is about 13.5 to-17.8 in selected and optimal lightweight concretes in this research, which can be considered good indirect tensile strength for structural lightweight concretes.

Mechanical Properties of Steel Fiber Reinforced Lightweight Aggregate Concrete

2011 ◽  
Vol 366 ◽  
pp. 12-15 ◽  
Author(s):  
Chang Yong Li ◽  
Huai Chen ◽  
Shun Bo Zhao
Keyword(s):  
Mechanical Properties ◽  
Steel Fiber ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fiber Reinforced ◽  
Aggregate Concrete ◽  
Flexural Tensile Strength ◽  
Axial Tensile ◽  
Mix Proportion ◽  
Expanded Shale

Experiments were conducted to study the basic properties of steel fiber reinforced lightweight aggregate concrete (SFLAC) mixed with machine-made sand and expanded-shale. The effects of sand ratio and cement content on the cubic and axial compressive strengths, splitting and axial tensile strengths, flexural tensile strength as well as compressive and tensile elastic modulus of SFLAC are analyzed comparing with those of LAC in the same conditions. Data from the experiments shows that, the steel fiber has advantages to every mechanical properties of LAC especially to the tensile strengths, and also modifies the abruptness failure states of LAC into multi-cracked characteristics of SFLAC. The optimum mix proportion is suggested for getting better properties of SFLAC.

Static Mechanical Properties and Impact Resistance of Steel Fiber Reinforced High-Strength Lightweight Aggregate Concrete

2011 ◽  
Vol 261-263 ◽  
pp. 115-119 ◽  
Author(s):  
Hong Wei Song ◽  
Hai Tao Wang
Keyword(s):  
Mechanical Properties ◽  
Flexural Strength ◽  
Steel Fiber ◽  
Impact Resistance ◽  
Lightweight Aggregate ◽  
High Strength ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Static Mechanical ◽  
Static Mechanical Properties

Since high strength of lightweight aggregate concrete leads to increased brittleness, fiber reinforcement should be considered for improving strength and ductility. 5 groups of SFLWC specimens with different steel fiber volumes including 0.0%, 0.5%, 1.0%, 1.5% and 2.0% were tested to investigate the effect of steel fiber content on the static mechanical properties and impact resistance of lightweight aggregate concrete. The static mechanical properties include the prismatic compressive strength, splitting tensile strength, first-crack flexural strength, flexural strength, and flexural toughness, etc. The experimental results indicated that addition of steel fiber can greatly improve such mechanical properties as the splitting tensile strength, flexural strength, flexural toughness and impact resistance, but leads to a little effect on compressive strength. Further more, the author suggests the feasible volume ratio of this kind of steel fiber is 1-1.5%.

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