A Review on Self Compacting Concrete with Cementitious Materials and Fibers

Memon, Noor Ahmed; Memon, Mahmood; Lakho, Nawab Ali; Memon, Faisal Ahmed; Keerio, Manthar Ali; Memon, Ammaar Noor

doi:10.48084/etasr.2006

Cited by 25 publications

(15 citation statements)

References 36 publications

(34 reference statements)

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“…Two concrete mixes were prepared by using manufactured sand, the TC and the HPGFRC having a strength class of 60MPa. TC was prepared by using the standard mix design method [1], while HPGFRC was prepared considering [16,17], increasing powder content, and reducing coarse aggregate as described in [18][19][20]. The detailed steps for mixing are described in [21,22].…”

Section: B MIX Proportionsmentioning

confidence: 99%

Improving the Mechanical Performance of Shell Precast Concrete Blocks for Coastal Protection Structures of Hydraulic Works

Duc

2021

Eng. Technol. Appl. Sci. Res.

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Although the use of concrete and reinforced concrete for construction has been widespread, more studies are needed on marine structures exposed directly to corrosive environments to prolong their service life. This paper proposes a new type of shell precast concrete block for coastal structures, studying a beam consisting of 15mm High-Performance Glass Fiber-Reinforced Concrete (HPGFRC) at the bottom and 45mm Traditional Concrete (TC) for the rest of the structure. Steel bar reinforcements were placed at the bottom with a concrete cover of 25mm to avoid abrupt failure. The strength classes of HPGFRC and TC were 60MPa and 30MPa respectively. A reference beam consisting of TC only was also prepared for comparison. The four-point flexural bending test results showed that the first cracking strength of the proposed beam was 20% higher, as HPGFRC performed better on tension than TC. Additionally, HPGFRC's maximum strength was 25% greater than TC's. Furthermore, HPGFRC possessed more durable characteristics such as waterproof grade, abrasion resistance, and shrinkage than TC, promising to protect the reinforcement from the aggressive marine environment and corrosion, prolonging the service life of the structure.

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Section: B MIX Proportionsmentioning

confidence: 99%

Improving the Mechanical Performance of Shell Precast Concrete Blocks for Coastal Protection Structures of Hydraulic Works

Duc

2021

Eng. Technol. Appl. Sci. Res.

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“…Self-Compacted Concrete (SCC) is a kind of concrete that is cast without being compacted and fills the formwork with its own weight. SCC provides some advantages in comparison with traditional concrete, including enhanced building quality, quicker construction activity, lower costs, increased in-situ concrete quality under challenging casting loads, decreased accidents, noise and vibrations, while it assists in the attainment of higher surface quality [1]. One of the drawbacks of SCC is its large cost, which is due to the usage of large amounts of Portland Cement (PC) and chemical additives.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Low Velocity Impact Loading on Self-Compacting Concrete Reinforced with Carbon Fiber Reinforced Polymers

Abd

Ahmed

2021

Eng. Technol. Appl. Sci. Res.

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Self-Compacting Concrete (SCC) reduces environmental noise and has more workability. This research presents an investigation of the behavior of SCC under mechanical loading (impact loading). Two types of cement have been used to produce SCC mixtures, Ordinary Portland Cement (OPC) and Portland Limestone Cement (PLC), which reduces the emission of carbon dioxide during the manufacturing process. The mixes were reinforced with Carbon Fiber Reinforced Polymer (CFRP) which is usually used to improve the seismic performance of masonry walls, to replace lost steel reinforcements, or to increase column strength and ductility. Workability tests were carried out for fresh SCC. Prepared concrete slabs of 500×500×50mm were tested for low-velocity impact loading at ages of 28, 56, and 90 days after water curing. The results were compared with the ones of non-reinforced SCC mixes and show a significant effect on the impact resistance after the SCC was reinforced with CFRP. The strongest impact resistance was recorded for reinforcing slabs made from OPC SCC, while for the reinforced concrete slabs produced from PLC the results were less, but at a close rate.

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“…Concrete is most widely used construction material. It is a mixture of cement, fine aggregates, coarse aggregates and water [2]. As the utilization of concrete and its constituent elements is on the rise throughout the world, it has increased the utilization of natural resources, especially aggregates in concrete, which forms the major part of the concrete.…”

Section: Introductionmentioning

confidence: 99%

Flow Characteristics of Recycled Coarse Aggregates (RCA) based Self-Compacted Concrete (SCC)

2021

IJETER

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The desire of humans increasing day by day to build new and high quality structures and to demolish the old structures. The demolished concrete is supplies to direct land fills and provides serious risk to the environment. In recent years, using recycled aggregates (RCA) as a substitute for natural aggregates in concrete has become of great interest to researchers. In meantime the use of RCA becomes sustainable and environmental friendly. The application of concrete in slabs, beams, columns specially areas of congested reinforcement requires high degree of compaction that is impossible to achieve at the site. For this purpose the self-compacted concrete (SCC) is the better solution. SCC is one that can flow under its own weight and fill the formwork completely without any need of compaction or vibration efforts. In this regards this experimental study has undertaken to investigate the flow behaviour of RCA based SCC. The natural crushed coarse aggregates were replaced by RCA at 0%, 20%, 40%, 60%, 80% and 100%. The fresh properties were evaluated through filling ability, passing ability and segregation resistance tests. The results revealed that all the fresh properties of RCA based SCC is depends on the percentage of RCA. As percentage of RCA increases the workability of concrete decreases. The workability is adjusted by increasing the suitable dosage of SP. Furthermore, it is also noted that all the values of freshproperties lie within the required limits of EFNARC.

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A Review on Self Compacting Concrete with Cementitious Materials and Fibers

Cited by 25 publications

References 36 publications

Improving the Mechanical Performance of Shell Precast Concrete Blocks for Coastal Protection Structures of Hydraulic Works

Improving the Mechanical Performance of Shell Precast Concrete Blocks for Coastal Protection Structures of Hydraulic Works

The Effect of Low Velocity Impact Loading on Self-Compacting Concrete Reinforced with Carbon Fiber Reinforced Polymers

Flow Characteristics of Recycled Coarse Aggregates (RCA) based Self-Compacted Concrete (SCC)

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