Self-compacting concrete incorporating high volumes of class F fly ash

Bouzoubaa, N.; Lachemi, Mohamed

doi:10.1016/s0008-8846(00)00504-4

Cited by 428 publications

(186 citation statements)

References 10 publications

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“…The 40% fly ash mixture recorded optimum workability compared to 60% fly ash SCC mixture. However, the spreading range obtained was all within the acceptable range which is from 500mm to 700mm [2]. The result are shown in Figure 1 and Figure 2 below.…”

Section: Slump Flow Testmentioning

confidence: 75%

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Fresh State and Mechanical Properties of Self Compacting Concrete Incorporating High Volume Fly Ash

Mohamad

Zulaika

Samad

et al. 2016

MATEC Web of Conferences

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Abstract. Self-compacting concrete is considered as a concrete which can be placed and compacted under its own weight without vibration. The elimination of the need for compaction leads to better quality concrete and substantial improvement of working conditions. This paper investigates the fresh state and mechanical properties of self-compacting concrete incorporating high volume fly ash. Fly Ash (FA) was mixed into self-compacting concrete (SCC) as a replacement for cement. Portland cement (PC) was partially replaced with 0%, 20%, 40% and 60% FA. The water to binder ratio was fixed at 0.4 for all mixtures. Tests were carried out on all mixtures to obtain the workability of self-compacting concrete in terms of viscosity by slump flow test (Diameter and T500), V-funnel and J-ring. The mechanical property tests were conducted on SCC cubes and cylinders to determine its compressive strength and modulus of elasticity. The results indicate that replacement of 40% fly ash is the optimum result for the workability and mechanical properties test. The highest compressive strength which is 27.2 MPa was achieved by SCC with 40% FA replacement. Modulus of elasticity increased with the increased percentage of fly ash except for 60% fly ash.

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Section: Slump Flow Testmentioning

confidence: 75%

“…SCC is the modified concrete with the use of chemical (superplasticizers and viscosity modifiers) and mineral (fly ash, slag, silica fume) admixtures in the concrete [2]. It is designed generally with high content of fine material.…”

Section: Introductionmentioning

confidence: 99%

Fresh State and Mechanical Properties of Self Compacting Concrete Incorporating High Volume Fly Ash

Mohamad

Zulaika

Samad

et al. 2016

MATEC Web of Conferences

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“…It is agreed that SCC enhanced concrete stability and involves the effect of different mixture variables to certify satisfactory fresh properties and excellent mechanical properties especially compressive strength [2]. The challenge in SCC is to achieve good strength concrete with economical cost, as compared with conventional concrete, which is used high quantity of Portland cement and chemical admixtures [3]. An approach to reduce the cost with mineral admixtures, the utilization of supplementary cementitious materials is applicable in SCC due to durability developments potential in the concrete composite and a Corresponding author : ahmadfarhanhamzah@gmail.com overall economy.…”

Section: Introductionmentioning

confidence: 99%

Fresh Properties and Flexural Strength of Self-Compacting Concrete Integrating Coal Bottom Ash

Jamaluddin

Hamzah

Ibrahim

et al. 2016

MATEC Web of Conferences

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Abstract. This paper presents the effect of using coal bottom ash as a partial replacement of fine aggregates in self-compacting concrete (SCC) on its fresh properties and flexural strength. A comparison between SCC with various replacements of fine aggregates with coal bottom ash showed that SCC obtained flexural strength decrease on increase of water cement ratio from 0.35 to 0.45. The natural sand was replaced with coal bottom ash up to 30% volumetrically. The fresh properties were investigated by slump flow, T500 spread time, L-box test and sieve segregation resistance in order to evaluate its self-compatibility by compared to control samples embed with natural sand. The results revealed that the flowability and passing ability of SCC mixtures are decreased with higher content of coal bottom ash replacement. The results also showed that the flexural strength is affected by the presence of coal bottom ash in the concrete. In addition, the water cement ratios are influence significantly with higher binder content in concrete.

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“…The environmental benefits of recycling FA have been well-known for a number of years [11,12], and the material has become a vital component in the manufacture of green concrete. Not only does the use of FA protect the environment, it improves a number of concrete properties, resulting in better workability, higher ultimate strengths, increased durability and lower shrinkage.…”

Section: Introductionmentioning

confidence: 99%

Use of spent foundry sand and fly ash for the development of green self-consolidating concrete

et al. 2010

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In the United States alone, the foundry industry discards up to 10 million tons of sand each year, offering up a plentiful potential resource to replace sand in concrete products. However, because the use of spent foundry sand (SFS) is currently very limited in the concrete industry, this study investigates whether SFS can successfully be used as a sand replacement material in cost-effective, green, selfconsolidating concrete (SCC). In the study, SCC mixtures were developed to be even more inexpensive and environmentally friendly by incorporating Portland cement with fly ash (FA). Tests done on SCC mixtures to determine fresh properties (slump flow diameter, slump flow time, V-funnel flow time, yield stress, and relative viscosity), compressive strength, drying shrinkage and transport properties (rapid chloride permeability and volume of permeable pores) show that replacing up to 100% of sand with SFS and up to 70% Portland cement with FA enables the manufacture of green, lower cost SCC mixtures with proper fresh, mechanical and durability properties. The beneficial effects of FA compensate for some possible detrimental effects of SFS.

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Self-compacting concrete incorporating high volumes of class F fly ash

Cited by 428 publications

References 10 publications

Fresh State and Mechanical Properties of Self Compacting Concrete Incorporating High Volume Fly Ash

Fresh State and Mechanical Properties of Self Compacting Concrete Incorporating High Volume Fly Ash

Fresh Properties and Flexural Strength of Self-Compacting Concrete Integrating Coal Bottom Ash

Use of spent foundry sand and fly ash for the development of green self-consolidating concrete

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