The Impact of Using Fly Ash, Silica Fume and Calcium Carbonate on the Workability and Compressive Strength of Mortar

Antoni, Antoni; Chandra, Lucky; Hardjito, Djwantoro

doi:10.1016/j.proeng.2015.11.132

Cited by 51 publications

(15 citation statements)

References 6 publications

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“…As the addition rate of SF increases results in an increase in funnel speed due to the effect of increasing paste volume. It was reported in the study of Antoni et al that using FA partially increases the flowability and compressive strength. SF causes to decrease the flowability of the mortar and hence needs the inclusion of SP to enhance flowability.…”

Section: Resultsmentioning

confidence: 92%

Mechanical and durability properties of self‐compacting mortars containing binary and ternary mixes of fly ash and silica fume

Benli

2019

Structural Concrete

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In this paper, the results of experimental work on the strength and durability performances of self‐compacting mortars (SCMs) manufactured from silica fume (SF) and fly ash (FA) were presented. The cement was partially replaced with 5, 10, 15, 20, and 25% of FA and 5, 10, and 15% of SF as binary mixes. Also, ternary mixtures were prepared by the incorporation of FA and SF at different replacement dosages by weight. In total, 14 different combinations of mixes were studied at the ages of 7, 28, and 180 days. Prismatic samples of size 40 × 40 × 160 mm3 were produced and exposed to water curing to observe mechanical behavior of SCMs. The mechanical properties of SCMs were examined by the tests of compressive strength and flexural strength. Sorptivity, porosity, water absorption, and density were also measured. To evaluate fresh properties of SCMs, mini slump flow diameter and mini V‐funnel flow time tests were conducted. The results of the study reveal that increase in the dosage of FA increases SCMs flow but also reduce segregation resistance. The enhancement in flexural strength is the best in the binary mixes of SF10 and in binary mixes of FA. Ten percent replacement of FA shows the best flexural strength performance with a value of 10.21 MPa at the age of 180 days. Compressive and flexural strengths of mortars containing SF and FA reached up to about 86.14 and 10.50 MPa, respectively.

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Section: Resultsmentioning

confidence: 92%

Mechanical and durability properties of self‐compacting mortars containing binary and ternary mixes of fly ash and silica fume

Benli

2019

Structural Concrete

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“…The use of silica fume decreased the workability of fresh mortar. The addition of superplasticizer improved the workability [10].…”

Section: Geopolymer Pastementioning

confidence: 97%

Characterization and compressive strength of fly ash based-geopolymer paste

et al. 2018

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Abstract. Fly ash is a by-product obtained from coal combustion process. Some of the utilization of fly ash is to produce geopolymer products which have high compressive strength, fire, chemical resistance. This paper proposes fly ash from unit 1-7 Suralaya Power Plant Indonesia. The aims of this study are to obtain characterization of fly ash and mechanical properties of geopolymer paste based on variations of the alkali activator ratio. The method was based on previous research and laboratory investigation. XRF and compressive strength were analysed in this study. Alkali activator was obtained from NaOH and Na2SiO3 mixture. The ratio of Na2SiO3 to NaOH was in the range of 0.5-2.5. Geopolymer paste was casted in acrylic cylinders with a diameter of 2 cm and a height of 4 cm. The curing was conducted at room temperature until the day for the compressive strength test at 28 days. The result showed that the fly ash is classified as F class. Increasing the alkali activator ratio influenced the strength. The best composition of geopolymer paste is made with NaOH 8M, and the mass ratio of Na2SiO3 to NaOH is 2.5. This composition produced compressive strength of 98.6 MPa.

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“…This can be explained as the increasing paste volume with SF. Antoni et al [32] concluded that the partial replacement of cement with FA increased the workability and compressive strength of the mortar. The use of SF reduces the workability of the fresh mortar and, therefore, requires the addition of superplasticizer to improve the workability.…”

Section: Fresh-state Propertiesmentioning

confidence: 99%

Effect of sea water and MgSO4 solution on the mechanical properties and durability of self-compacting mortars with fly ash/silica fume

Benli

Karataş

Gürses

2017

Construction and Building Materials

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The Impact of Using Fly Ash, Silica Fume and Calcium Carbonate on the Workability and Compressive Strength of Mortar

Cited by 51 publications

References 6 publications

Mechanical and durability properties of self‐compacting mortars containing binary and ternary mixes of fly ash and silica fume

Mechanical and durability properties of self‐compacting mortars containing binary and ternary mixes of fly ash and silica fume

Characterization and compressive strength of fly ash based-geopolymer paste

Effect of sea water and MgSO4 solution on the mechanical properties and durability of self-compacting mortars with fly ash/silica fume

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