scholarly journals Mechanical properties of high strength semi-lightweight aggregate concrete containing high volume waste materials

2016 ◽  
Author(s):  
Jin Chai Lee ◽  
Payam Shafigh ◽  
Hilmi Bin Mahmud ◽  
See Kim Lee
Keyword(s):  
Mechanical Properties ◽  
Lightweight Aggregate ◽  
High Strength ◽  
High Volume ◽  
Waste Materials ◽  
Lightweight Aggregate Concrete ◽  
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.

Structural Lightweight Aggregate Concrete Containing High Volume Waste Materials

2013 ◽  
Vol 594-595 ◽  
pp. 498-502 ◽  
Author(s):  
Mahmud Hilmi ◽  
Payam Shafigh ◽  
Mohd Zamin Jumaat
Keyword(s):  
Negative Impact ◽  
Lightweight Aggregate ◽  
High Volume ◽  
Waste Materials ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Curing Conditions ◽  
Granulated Blast Furnace Slag ◽  
Structural Lightweight Aggregate Concrete ◽  
Cementing Material

The use of waste and by-product materials as aggregate or cement replacement in concrete can provide a solution to reducing the negative impact of the concrete industry. This paper reports an investigation to produce green concrete by using oil palm shell (OPS) as coarse lightweight aggregate as well as ground granulated blast furnace slag (GGBFS) as supplementary cementing material subjected to different curing conditions. Test results show that it is possible to produce green structural lightweight aggregate concrete containing 50% waste materials (by volume of concrete) with 28-day compressive strength of about 33 MPa. Data show that OPS concrete is very sensitive to curing, especially when GGBFS is used as a supplementary cementitious material.

Research on Influences of Activity Mineral Admixture on Workability and Mechanical Properties of High Strength Lightweight Aggregate Concrete

2011 ◽  
Vol 250-253 ◽  
pp. 861-865
Author(s):  
Xiang Dong ◽  
Jian Ming Gao ◽  
Ai Yu Hu
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Lightweight Aggregate ◽  
High Strength ◽  
Industrial Wastes ◽  
Mineral Admixture ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Granulated Blast Furnace Slag ◽  
Better Than

Aiming at the high expense of high strength lightweight aggregate concrete (HSLWAC), low-cost HSLWAC was produced making use of the industrial wastes including fly-ash (FA) and ground granulated blast furnace slag (GGBS) as admixture, and the influences of these admixtures on the workability and mechanical properties of HSLWAC were studies. Result shows that HSLWAC whose cubic compressive strength is high to 70MPa at the age of 28d can be produced with mixing admixtures; the effect of mixing GGBS to the strength of HSLWAC is better than that of mixing FA; and mixing admixtures is useful for the improvement of the workability of HSLWAC; However, the brittleness of HSLWAC rises with the increase of its strength.

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%.

Engineering properties of lightweight aggregate concrete containing limestone powder and high volume fly ash

2016 ◽  
Vol 135 ◽  
pp. 148-157 ◽  
Author(s):  
Payam Shafigh ◽  
Mohammad A. Nomeli ◽  
U. Johnson Alengaram ◽  
Hilmi Bin Mahmud ◽  
Mohd Zamin Jumaat
Keyword(s):  
Fly Ash ◽  
Lightweight Aggregate ◽  
High Volume ◽  
Limestone Powder ◽  
Engineering Properties ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
High Volume Fly Ash

Lightweight Aggregate Concrete as an Alternative for Dense Concrete in Post-Tensioned Concrete Slab

2018 ◽  
Vol 926 ◽  
pp. 140-145 ◽  
Author(s):  
Małgorzata Mieszczak ◽  
Lucyna Domagała
Keyword(s):  
Mechanical Properties ◽  
Lightweight Concrete ◽  
Concrete Slab ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Aggregate Concrete ◽  
Large Span ◽  
Shrinkage And Creep ◽  
Theoretical Results ◽  
Post Tensioned

The paper presents the results of tests conducted on two lightweight aggregate concretes made of new national Certyd artificial aggregate. This research is intended to first application of lightweight concrete to construct large-span post-tensioned slab. In addition to mechanical properties development, shrinkage and creep during 3 months of loading were tested. The obtained results are compared with theoretical results predicted by standard. Conducted tests indicated, that measured values of shrinkage and creep are significantly lower than predicted ones. This is promise for application of tested concrete in construction of post-tensioned slabs.

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