Strength Properties of Concrete Produced With Iron Filings as Sand Replacement

Olutoge, Festus; Onugba, Michael Attah; Ocholi, Amana

doi:10.9734/bjast/2016/29938

Cited by 28 publications

(18 citation statements)

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“…For the number of days of water immersion, the compressive strength of concrete at 20% of IF after 28 days increases by 9% and 21% more than 14 and 7 days of curing respectively. IF has a high toughness which gives higher values of compressive strength [13]. This is consistent with what Alzaed, A. N., 2014 [3] got.…”

Section: ) Adding Of Industrial Additives (If) With 45%-rca To the Csupporting

confidence: 88%

“…The increase in slump values may be due to the increase in the proportion of W/C added to RCA, and as a result the best concrete workability because of the access to the desired water content which voids in the old cement mortar has been filled by. The slump values at 2.5% of W/C were 0 may be recommended for produce slabs of precast concrete pavement [13,15]. There is an inverse association between strengths and workability of concretes after 2.5% of W/C.…”

Section: Fig 3 Slump Values Vs Extra W/cmentioning

confidence: 99%

“…The reaction between silica and lime leads to improved compressive strength, where the lime created during cement hydration. Additional calcium silicate hydrate are formed increasingly slowly and thus the formation of a very soft materials that helps cohesion and fill in the voids [13].…”

Section: ) Compressive Strength Of Concrete With Pre-wetting Of 45%-rcamentioning

confidence: 99%

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Pre-Wetting of Recycled Concrete as Alternative of Chemical, Natural and Industrial Waste Additives

Adday¹,

Awad²

2019

IJITEE

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Destructive infrastructure is increasing day by day due to the successive wars in the Arab region and this led to the formation of large volumes of demolished concrete, which produces a lot of waste materials and visual pollution in the spaces. Meanwhile, environmental protection has become a challenge, not an option. As well as, reusing of demolished concrete in new structures is necessary to preserve the raw resources of aggregate away from attrition. Seventy-two specimens of ( 100 x 100 x 100 mm ) were prepared with water to cement ( W/C ) ratio of 0.4, where have replaced the different proportions of natural aggregate ( NA ) ( 0%, 30%, 45%, and 60% ) by recycled concrete aggregate ( RCA ), and then were added 2.5% super plasticizer ( SP ) in place of cement to other specimens according to previous replacement proportion of RCA to determine the optimum percentage of RCA and to investigate the effectiveness of using Super Plasticizer. The replacement proportion of RCA were 45% of NA. sixty six cubes of 45% - RCA were prepared with a different proportions of 0, 10, 15, and 20 % of instead of a fine aggregate for each the Iron Filler ( IF ) and Al-Qawirah Silica Sand (QSS), it is natural Silica was got from the quarry of AL-Qawirah, Jordan. The use of this type of silica as a substitute for fine aggregate with RCA is the first use in Jordan. The final stage of research was the pre-wetting of RCA by 0%, 2.5%, 5%, and 7.5% as percentage of W/C, it is an extra water added to the 45%-RCA mixtures before an hour from mix process, thirty-six cubes were casted with different proportions of extra water. The results displayed that the workability was reduced by increasing the RCA, while the workability was increase as ratios of W/C increase. The analytical study shows a considerable enhancement of the compressive strength of 2.5% pre-wetting of RCA with 45%-RCA relative to the SP, IF, and NA, where the increase in the compressive strength was 64% and 28% at 2.5% pre-wetting of RCA relative to SP-45% RCA and NA, respectively

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Section: ) Adding Of Industrial Additives (If) With 45%-rca To the Csupporting

confidence: 88%

Section: Fig 3 Slump Values Vs Extra W/cmentioning

confidence: 99%

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Pre-Wetting of Recycled Concrete as Alternative of Chemical, Natural and Industrial Waste Additives

Adday¹,

Awad²

2019

IJITEE

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“…Familusi et al 16 stated that the strength gain in IF mixed concrete is caused by pore blockage thereby enhancing interparticle friction 17 . Olutoge et al 18 observed that 20% of IF used for sand replacement could achieve 13.5% increase in strength. This is similar to the finding of Ghannam et al 19…”

Section: Introductionmentioning

confidence: 99%

Effect of incorporating iron‐filing waste on the properties of silica fume blended cement paste

Yusuf

Shamsah

Al-Sodani

et al. 2020

Structural Concrete

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This study is aimed at finding the contribution of the varied quantities (5, 10, and 15 wt%) of iron filing (IF) on the strength of silica fume (SF) blended ordinary Portland cement (OPC) paste. The paste was developed such that water/(IF + SF + OPC) ratio was maintained as 0.35 at a constant 10 wt% SF content in the binder. The early (7‐day) strength was found to be lower than the control (0% IF) due to disruption of hydration process. The decrease in strength of SF blended paste was increasing with the increase in the IF up to 15%. The maximum 28‐day compressive strength of 119 MPa was achieved when OPC blended binder was replaced with 5%IF. The maximum strength was reduced by 18.4 and 23.8% as the OPC substitution level increased to 10 and 15% IF, respectively. The presence of IF within the blended paste appeared not to combine chemically with hydration products. This caused nonuniformity in the microstructural texture thereby increasing the carbonation effect in the plain paste. However, the presence of SF in the paste reduced carbonation significantly as reflected in the reduction in the peak of —C—O— vibration as observed through FTIR spectroscopy.

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“…In another study, Ismail and Al-Hashmi [7] also concluded that the use of iron filings waste to partially replace fine aggregate in various concrete mixes can offer higher compressive strength values than those of the plain mixes values. Olutoge et al, [8] conducted a research to examine the use of iron filings as a partial fine aggregate replacement on the mechanical properties of concrete. Various concrete specimens (cubes, cylinders, and prisms) were tested for compressive, splitting tensile and flexural strengths at different levels of fine aggregate replacement (0% (reference mix), 10%, 20% and 30%) (by weight) with iron filings prior to conventional water curing for 28-days.…”

Section: Introductionmentioning

confidence: 99%

Utilization Iron Filings and Microwave Heating in Roughening the Surface of Smoothed Coarse Aggregates

Wajde¹,

Alyhya²,

Rasoul³

et al. 2018

IJET

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Properties of coarse aggregate such as texture have a significant influence on the performance of fresh and hardened concrete. A smooth surface can enhance workability, yet a rougher one offers a stronger bond between aggregate and paste, resulting in higher strength. This research aims to roughen the texture of white smoothed aggregate by using cement-iron filings mortar with the aid of microwave maturation to accelerate the adhesion process of mortar-aggregate surface. The mortar was prepared by mixing an equal weight of cement and iron filings, of a particular size, with sand. Four different periods (2, 4, 6 and 8 mints.) of microwave treatment in addition to water curing were considered plus one reference mortar which cured in only air for 24 hrs. The treated aggregate was then used for casting concrete specimens with a w/c ratio of 0.5 in which their properties being determined by means of density, compressive and tensile strengths observations. The main findings revealed that the concrete specimens contained microwave treated aggregate attained higher compressive strength compared with those treated in the air. Data also showed that concrete specimens with microwave treated aggregate possess better tensile properties as a consequence of the improvement in the transition zone.

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Strength Properties of Concrete Produced With Iron Filings as Sand Replacement

Cited by 28 publications

References 0 publications

Pre-Wetting of Recycled Concrete as Alternative of Chemical, Natural and Industrial Waste Additives

Pre-Wetting of Recycled Concrete as Alternative of Chemical, Natural and Industrial Waste Additives

Effect of incorporating iron‐filing waste on the properties of silica fume blended cement paste

Utilization Iron Filings and Microwave Heating in Roughening the Surface of Smoothed Coarse Aggregates

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