Mixed Concrete Optimization using Fly Ash, Silica Fume and Iron Slag on the SCC's Compressive Strength

Raharjo, Dwiputro; Subakti, Aman; Tavio,

doi:10.1016/j.proeng.2013.03.076

Cited by 40 publications

(19 citation statements)

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“…However, in ternary and quaternary SCC mixes, the prediction of compressive strength based on the percentages of the contents of SCMs requires further experimental and analytical studies [44].…”

Section: Environmentally-friendly Low Cement Content Scc Mixesmentioning

confidence: 99%

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Mohamed

2019

Sustainability

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The production of cement requires significant energy and is responsible for more than 5% of global CO2 emissions; therefore it is imperative to reduce the production and use of ordinary portland cement (OPC). This paper examines the compressive strength development of low water-to-binder (w/b) ratio self-consolidating concrete (SCC) in which 90% of the cement is replaced with industrial by-products including ground granulated blast furnace slag (GGBS), fly ash, and silica fume. The emphasis in this paper is on replacing a large volume of cement with GGBS, which represented 10% to 77.5% of the cement replaced. Fresh properties at w/b ratio of 0.27 were examined by estimating the visual stability index (VSI) and t50 time. The compressive strength was determined after 3, 7, 28, and 56 days of curing. The control mix made with 100% OPC developed compressive strength ranging from 55 MPa after three days of curing to 76.75 MPa after 56 days of curing. On average, sustainable SCC containing 10% OPC developed strength ranging from 31 MPa after three days of curing to 56.4 MPa after 56 days of curing. However, the relative percentages of fly ash, silica fume, and GGBS in the 90% binder affect the strength developed as well. In addition, this paper reports the effect of the curing method on the 28 day compressive strength of environmentally friendly SCC in which 90% of the cement is replaced by GGBS, silica fume, and fly ash. The highest compressive strength was achieved in samples that were cured for three days under water, then left to air-dry for 25 days, compared to samples cured using chemical compounds or samples continuously cured under water for 28 days. The study confirms that SCC with 10% OPC and 90% supplementary cementitious composites (GGBS, silica fume, fly ash) can achieve compressive strength sufficient for many practical applications by incorporating high amounts of GGBS. In addition, air-curing of samples in a relatively high temperature (after three days of water curing) produce a higher 28 day compressive strength compared to water curing for 28 days, or membrane curing.

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Section: Environmentally-friendly Low Cement Content Scc Mixesmentioning

confidence: 99%

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Mohamed

2019

Sustainability

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“…The addition of silica fume is very advantageous, addition of 5, 10 and 15% of silica fume cement supply, allows a reduction of the phenomenon of swelling of 121% to 16 day trial. In others papers we found the variation of the dosage of silica fume used in SCC from 0 to 20% (Raharjo et al, 2013).…”

Section: Introductionmentioning

confidence: 81%

Formulation and characterization of self compacting concrete with silica fume

.S.¹

2013

J. Eng. Technol. Res.

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Self-compacting concrete (SCC) was elaborated using local materials and silica fume (SF) as admixture in 15% of cement quantity, two different Portland cements (PC) and two different superplasticizer that the chemical nature is polycarboxylate and plynaphtalene, the aggregates used are (AG 3/8 mm, AG 8/15 mm), coarse and fine sand (SC, SF) witch fineness modulus 3.2 and 1 in the order. The dosage of the different superplasticizer used is chosen after experimental spreading tests of each self compacting concrete formulation. Results of fresh concrete tests executed, as L-box and segregation resistance are on concordance whit values recommended by the French association of civil engendering. Also the mechanical characterization was conducted by compressive strength and splitting compression testing procedure, results values are in the range higher than 20 Mpa at the seven day by the compressive test for the all compositions, and the highest value was 40.93 MPa at the 28 day bay compressive test of the fourth's formulation specimens, the values of splitting compressive tests of al formulation specimens at 7, 14 and 28 days, was situated between 2.01 and 4.40 MPa. In order to determine the superplasticizer saturation assay in of cement pasts used in self compacting concrete, the stady was completed by a rheological stady with a variable velocity gradient, so as to estimate the quantity of saturation assay of superplasticizer and the formulation, also the flow models of cement paste.

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“…D; et.al. (2013) [6] carried out a research where some trial mixtures containing fly ash, silica fume, policarboxilate based of super plasticizer , and iron slag have been performed that directs to determine the SCC's optimal composition and meet the EFNARC requirement. The cylindrical sample of 10 cm in diameter and 20 cm in height of hardened SCC was also tested at 3, 7, 14, 28 and 56 days of concrete age.…”

Section: H Time Of Construction Is Minimizedmentioning

confidence: 99%

A Review on Self Compacting Concrete

Dwivedi¹

2017

IJRASET

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Self compacting concrete (SCC) is an innovative concrete that does not require vibration for placing as it becomes dense due to its own self weight. SCC is a high performance concrete (HPC) which meets special performance and uniformity requirements that cannot be always achieved by using only the conventional materials and normal mixing, placing, and curing practices. SCC has excellent deformability and resistance to segregation of aggregates in its fresh state. High workability and control of slump, toughness, volume stability, service life, Low water binder ratio, Low bleeding and low plastic shrinkage, through a tight and refined pore structure of the cement paste are the improvements in performance requirements. The hardened concrete is dense, homogenous and has the same engineering properties and durability as vibrated concrete.

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Mixed Concrete Optimization using Fly Ash, Silica Fume and Iron Slag on the SCC's Compressive Strength

Cited by 40 publications

References 1 publication

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Effect of Mix Constituents and Curing Conditions on Compressive Strength of Sustainable Self-Consolidating Concrete

Formulation and characterization of self compacting concrete with silica fume

A Review on Self Compacting Concrete

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