Mechanical strength development of mortars containing volcanic scoria-based binders with different fineness

al-Swaidani, Aref M.; Aliyan, Samira D.; Adarnaly, Nazeer

doi:10.1016/j.jestch.2015.12.006

Cited by 25 publications

(18 citation statements)

References 26 publications

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“…The results showed that the setting times slightly increased with VS replacement level. This could be due to the increase of water demand [7,22] and the pozzolanic reaction between the glassy phase in VS and CH liberated during hydration of C 3 S and C 2 S of clinker, which is, usually, slower than the hydration of cement [7].…”

Section: Water Requirementsmentioning

confidence: 99%

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Improvement of the Early-Age Compressive Strength, Water Permeability, and Sulfuric Acid Resistance of Scoria-Based Mortars/Concrete Using Limestone Filler

al-Swaidani

Soud

Hammami

2017

Advances in Materials Science and Engineering

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Natural pozzolan is being widely used as cement replacement. Despite the economic, ecological, and technical benefits of its adding, it is often associated with shortcomings such as the need of moist-curing for longer time and a lower early strength. This study is an attempt to investigate the effect of adding limestone filler on the compressive strength and durability of mortars/concrete containing scoria. Sixteen types of binders with different replacement levels of scoria (0, 10, 20, and 30%) and limestone (0, 5, 10, and 15%) were prepared. The development of the compressive strength of mortar/concrete specimens was investigated after 2, 7, 28, and 90 days' curing. In addition, the acid resistance of the 28 days' cured mortars was evaluated after 90 days' exposure to 5% H 2 SO 4 . Concrete permeability was also evaluated after 2, 7, 28, and 90 days' curing. Test results revealed that there was an increase in the early-age compressive strength and a decrease in water penetration depths with adding limestone filler. Contrary to expectation, the best acid resistance to 5% H 2 SO 4 solution was noted in the mortars containing 15% limestone. Based on the results obtained, an empirical equation was derived to predict the compressive strength of mortars.

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Section: Water Requirementsmentioning

confidence: 99%

“…However, its use caused longer setting times and lower early strengths compared with plain Portland cement [7,8]. To overcome the disadvantages of low early strengths of binders containing natural pozzolans, adding limestone filler could be a solution.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the Early-Age Compressive Strength, Water Permeability, and Sulfuric Acid Resistance of Scoria-Based Mortars/Concrete Using Limestone Filler

al-Swaidani

Soud

Hammami

2017

Advances in Materials Science and Engineering

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“…This could be attributed to the relatively high fineness of natural pozzolans (i.e. 4200 cm 2 /g) which increases their surface area, resulting in higher activity [26]. Figure 6 shows the secant modulus of elasticity at three different curing times (x-axis) for the concretes tested.…”

Section: Compressive and Splitting Strength Of Concretesmentioning

confidence: 99%

Production of Greener Recycled Aggregate Concretes Using Local Supplementary Cementing Materials

al-Swaidani¹

2017

MOJCE

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In the study, supplementary cementing materials (SCMs) have been added in an attempt to improve the performance of recycled aggregate concrete. The use of such eco-friendly materials could also promote a further greening practice in the concrete industry. The concrete performance was evaluated in terms of mechanical properties and concrete permeability. Mechanical properties investigated include compressive strength and modulus of elasticity of concrete. Water permeability, chloride penetrability have particularly been studied to evaluate the permeability properties. The results revealed that the use of SCMs could improve produce greater compressive and modulus of elasticity than those of the recycled aggregate concrete alone. Further, the results showed that permeability properties of recycled aggregate concrete have significantly been improved with addition of these SCMs. Basaltic aggregates were used for comparison and SEM analysis was employed as well.

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“…World PC clinker production is responsible for about 7% of the total CO 2 emissions [6][7][8]. For this reason, particular attention has recently been given to the exploitation of scoria in many countries, including Turkey [9,10], Syria [11,12] and Yemen [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…Scoria can be utilized in several industrial applications including the manufacturing of lightweight concrete, as a source of pozzolan to manufacture Portland-pozzolan cement additives, as a heat insulating material, in low cost fillers in paint, filter materials and absorbents, in architectural applications [15], for producing geopolymer mortar [16][17][18] and as a sand in PC mortar [19]. Scoria is abundant in various parts of the world including Turkey [9,10], Syria [11,12], Saudi Arabia [15,21,22] and Cameroon [16,17,19].…”

Section: Introductionmentioning

confidence: 99%

Preliminary Assessment of Utilization of Al-Jaif Scoria (NW Sana’a, Yemen) for Cement Production

Al-Akhaly

Ahmed

Mohammed

2018

SQU Journal for Science

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This paper presents the results of investigations on the potential industrial utilization of scoria, collected from Al-Jaif quarry, NW Sana'a, Yemen as a cement additive. Scoria was chosen as a cement additive material due to its availability and low cost from the Sana’a-Amran volcanic field in Yemen. The chemical composition of scoria was determined by X-ray fluorescence (XRF). The studied scoria is mainly composed of volcanic glass with a few zeolites (e.g. clinoptilolite) as revealed from petrographic investigation and X-ray diffraction (XRD). The scoria was added to the clinker in the range of 2, 4, 6, 8, 10 and 12% by weight. The fineness, surface area, water demand, setting time and compressive strength were conducted on scoria blended cement. According to experimental results, the high volcanic glass allows the addition of up to 12% scoria to the clinker to maintain a good potential of manufacturing blended cement. The results satisfy the European Standard EN requirements and confirm the viability of using scoria as a cement additive.

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Mechanical strength development of mortars containing volcanic scoria-based binders with different fineness

Cited by 25 publications

References 26 publications

Improvement of the Early-Age Compressive Strength, Water Permeability, and Sulfuric Acid Resistance of Scoria-Based Mortars/Concrete Using Limestone Filler

Improvement of the Early-Age Compressive Strength, Water Permeability, and Sulfuric Acid Resistance of Scoria-Based Mortars/Concrete Using Limestone Filler

Production of Greener Recycled Aggregate Concretes Using Local Supplementary Cementing Materials

Preliminary Assessment of Utilization of Al-Jaif Scoria (NW Sana’a, Yemen) for Cement Production

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