Drying Shrinkage of Concrete Containing Calcium Stearate, (Ca(C18H35O2)2), with Ordinary Portland Cement (OPC) as a Binder: Experimental and Modelling Studies

Maryoto, Agus; Setijadi, Rachmad; Widyaningrum, Arnie; Waluyo, Sugeng

doi:10.3390/molecules25214880

Cited by 17 publications

(8 citation statements)

References 22 publications

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“…However, the incorporation of CS does, which is significantly increase the magnitude of shrinkage strain. This result is contradicting the result obtained by Maryoto et al [17] that shows reduced shrinkage magnitude with the incorporation of CS. It might because the researchers maintain the relative humidity and temperature of 50% ± 4% and 22.8 ± 1.7 ⁰C respectively indoor.…”

Section: Dimensional Stabilitycontrasting

confidence: 99%

“…The improvement in sorptivity and flow by incorporation of CS might because CS can react with cement and water to form a hydrophobic layer on the pore surface [17]. The hydrophobic layer might able to reduce the diameter of pores or discontinue the pores, therefore sorptivity, and flow are greatly reduced.…”

Section: Measurement On Dimensional Changesmentioning

confidence: 99%

“…Maryoto et al [17] studied on drying shrinkage of concrete containing 0.1% to 0.3% of CS by cement mass. They concluded that CS could react with cement and water to form a hydrophobic layer on the pore surface and influences cement shrinkage behaviour, in which, the addition of CS reduces concrete shrinkage, and the shrinkage can be proportional to the water content of concrete.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, incorporation of ESP might improve micro-structure to increase the strength and meanwhile slow down the flow of water in the LFC.The addition of 1% CS significantly improves the sorptivity and flow properties by average 79% and 78% respectively when compare LFC with CS to those without CS. For LFC containing CS, incorporation of ES might be unfavourable as the sorptivity and flow of LFC-5ES1CS are higher than those of LFC-0ES1CS by 35% and 4.4% respectively.The improvement in sorptivity and flow by incorporation of CS might because CS can react with cement and water to form a hydrophobic layer on the pore surface[17]. The hydrophobic layer might able to reduce the diameter of pores or discontinue the pores, therefore sorptivity, and flow are greatly reduced.When referring to the actual foam amount added during mixing, the required foam amount reduces when ES RL increase.…”

mentioning

confidence: 99%

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Dimensional Stability of Lightweight Foamed Concrete Containing Eggshell Powder and Calcium Stearate

Yong

Kang

Ling

2022

IJIE

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In order to reduce eggshell (ES) waste and reduce utilization of pure cement, various researches were conducted to study effects of eggshell powder (ESP) on properties of concrete when it partially replaces ordinary Portland cement (OPC). Dimensional stability is one of the properties that related to cracking issue and soundness of concrete, and it is generally guided by movement of moisture. This study was conducted to study the dimensional stability of lightweight foamed concrete (LFC) that containing eggshell powder and calcium stearate (CS), where, replacement level (RL) of eggshell powder ranged from 0% to 10% at interval of 2.5%, and additional of 1% calcium stearate as cement mass applied for the mixture containing 0% and 5% eggshell powder. Besides, sorptivity and initial surface absorption were tested to compare with dimensional changes, and compressive strength was tested to confirm the additives have no significant adverse effect on the strength. The result shows that incorporation of 5% eggshell powder improves sorptivity, initial surface absorption, and dimensional stability (outdoor R² value) of the lightweight foamed concrete by 33%, 55%, and 1.5% respectively, meanwhile, additional of 1% calcium stearate improves these properties by average 79%, 78%, and 7.2% respectively.

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Section: Dimensional Stabilitycontrasting

confidence: 99%

Section: Measurement On Dimensional Changesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Dimensional Stability of Lightweight Foamed Concrete Containing Eggshell Powder and Calcium Stearate

Yong

Kang

Ling

2022

IJIE

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“…Surfactants keep gas bubbles stable in the system by preventing them from aggregating. Surfactants such as butyric acid, valeric acid, butyl gallate, propyl gallate, hexylamine, and calcium stearate are commonly utilized (57)(58)(59)(60)(61)(62).…”

Section: Introductionmentioning

confidence: 99%

A mini guideline study for fly ash-based alkali activated foam masonry units

Kurtuluş

Başpınar

2022

materconstrucc

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This study examined the preparation of fly ash-based foam geopolymer recipes with the experimental design method and data analysis with the SPSS program. A total of 54 prescriptions were used in the studies, which investigated six different variables. Strength, density, and thermal conductivity analyses were performed. Values were in the range of 0.57-2.75 MPa for strength, 344-592 kg/m3 for density, and 0.089-0.132 for thermal conductivity. Three variables were identified with each having the most significant effect on strength and density values. H2O2, curing temperature, and expanded perlite had the most effect on strength, while H2O2, curing temperature, and alkali concentration had the most significant effect on density. Most influential parameters are plotted on ternary graphs to ensure that the foam concrete (CLC) masonry units used in all types of masonry walls, whether load-bearing or not, can operate under the specified performance conditions.

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Properties of cement‐based materials containing calcium stearate and supplementary cementitious materials

Chari¹,

Naseroleslami

Ahmadi³

2023

Structural Concrete

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Calcium stearate (CS) is effective to reduce permeability of different building materials under nonhydrostatic pressure but more actions need to be taken to shed light on its main and side effects on properties of cement‐based materials. This research project investigates the effect of CS on properties of these materials. Compressive strength analysis shows that the addition of CS at the dosage of 1% of cement weight reduces this parameter by approximately 20% but reducing water‐to‐binder ratio, and replacing 7.5% of cement weight with silica fume (SF) compensate for the strength loss caused by CS. Results of drying shrinkage test show that the addition of CS slightly increases drying shrinkage but replacing 7.5% of cement weight with SF can compensate for the negative effects of CS on drying shrinkage. Permeability analysis shows that CS is not as effective as SF and natural zeolite (NZ) to improve impermeability under hydrostatic pressure but it is more effective than SF and NZ to improve impermeability under nonhydrostatic pressure because the addition of CS at the dosage of 1% of cement weight reduces capillary water absorption by roughly 60%. Therefore, the simultaneous use of CS and these supplementary cementitious materials improves not only impermeability under hydrostatic pressure but also impermeability under nonhydrostatic pressure.

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Drying Shrinkage of Concrete Containing Calcium Stearate, (Ca(C18H35O2)2), with Ordinary Portland Cement (OPC) as a Binder: Experimental and Modelling Studies

Cited by 17 publications

References 22 publications

Dimensional Stability of Lightweight Foamed Concrete Containing Eggshell Powder and Calcium Stearate

Dimensional Stability of Lightweight Foamed Concrete Containing Eggshell Powder and Calcium Stearate

A mini guideline study for fly ash-based alkali activated foam masonry units

Properties of cement‐based materials containing calcium stearate and supplementary cementitious materials

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