Effect of petroleum (pet) coke addition on the density and thermal conductivity of cement pastes and mortars

Olmeda, J.; Rojas, M.I. Sánchez de; Frías, Moisés; Donatello, Shane; Cheeseman, Christopher

doi:10.1016/j.fuel.2013.01.074

Cited by 38 publications

(10 citation statements)

References 28 publications

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“…The lowest thermal conductivity measured is 0.12 W/mK, which was obtained by paste samples containing 75% petroleum coke by weight. and represented a 76% reduction in thermal conductivity compared to control samples [8]. The addition of rubber in cement was also proven to be able to reduce the thermal conductivity of cement [10].…”

Section: Abbreviation MIX Controlmentioning

confidence: 90%

“…Most buildings in the present time are made of concrete and cement paste is one of the main constituents of concrete. There are a lot of researches that explore the addition of new materials such as petroleum coke [8], limestone [9], rubber [10], silica fume [11,12] and microwave incinerated rice husk ash (MIRHA) [11] in cement paste to lower its thermal conductivity. Due to the brittleness of silica aerogel, adding silica aerogel in powder form in cement paste is a potential method of applying silica aerogel as building insulation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of silica aerogel on the thermal conductivity of cement paste for the construction of concrete buildings in sustainable cities

Khamidi

Glover

Farhan

et al. 2014

WIT Transactions on the Built Environment

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The objective of this paper is to evaluate the effect of silica aerogel on the thermal conductivity of cement paste for the construction of concrete buildings in sustainable cities. Samples consisting of Ordinary Portland Cement (OPC), free water and different volumes of silica aerogel were prepared and cured for three (3), seven (7) and 28 days. Compressive strength tests were performed on samples at three (3), seven (7) and 28 days of curing. Porosity and thermal conductivity tests were conducted on samples at 28 days of curing. The lowest thermal conductivity measured was 0.076 W/mK, which was achieved by sample mix with 20 ml of silica aerogel (M20), which represents a 93.58% reduction in thermal conductivity relative to the control mix. The highest permeable porosity measured for cement paste incorporated with silica aerogel was 25.6%, which was also obtained by sample M20. However, the highest compressive strength measured was 54.33 MPa, which was obtained by sample mix with 10 ml of silica aerogel (M10) at 28 days of curing. The addition of silica aerogel as filler in cement paste can reduce the thermal conductivity of cement paste at the expense of reduced compressive strength and increased permeable porosity.

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Section: Abbreviation MIX Controlmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effect of silica aerogel on the thermal conductivity of cement paste for the construction of concrete buildings in sustainable cities

Khamidi

Glover

Farhan

et al. 2014

WIT Transactions on the Built Environment

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“…The thermal conductivity of 90WBA-10g units is 0.42 W/mK, decreasing to 0.30 W/mK for 20WBA-80g specimens. The thermal conductivity of specimens decreases as the bulk density of the calcium silicate units decreases, since bulk density is the main factor influencing the thermal conductivity of solid materials [62,63]. Calcium silicate units with low bulk density have a higher percentage of pores that are filled with air that acts as thermal insulator, increasing the insulation capacity of the solid matrix.…”

Section: Wba-10gmentioning

confidence: 99%

Wood Bottom Ash and GeoSilex: A By-Product of the Acetylene Industry as Alternative Raw Materials in Calcium Silicate Units

et al. 2020

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The main objective of this research was to obtain calcium silicate units from alternative raw materials, such as the bottom ashes from the combustion of wooden boards (WBA), as a source of silica, and GeoSilex (G), a by-product with low energy and environmental costs generated in the manufacture of acetylene, as a source of lime. Once the raw materials were physically, mineralogically and chemically characterized, calcium silicate units were obtained by mixing different amounts of WBA residue (90–20 wt%) and G by-product (10–80 wt%). The mixtures were compressed at 10 MPa and cured in water for 28 days. The calcium silicate units were subjected to a wide experimental program that included the determination of physical properties (bulk density, apparent porosity and water absorption), mechanical properties (compressive strength), and thermal properties (thermal conductivity). Optimum values are obtained for calcium silicate units that contain a 1/1 WBA/G weight ratio, which have an optimal amount of SiO2 and CaO for the cementation reaction. The 50WBA-50g units have compressive strength values of 46.9 MPa and a thermal conductivity value of 0.40 W/mK. However, all calcium silicate units obtained comply with the European Standard EN 771-2: 2011 to be used as structural building materials.

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“…30,32 Carbonaceous materials, such as nely ground coke, gilsonite, and petroleum coke, are also effective as extenders for low specic gravity and improve the exibility of the cement slurries. [33][34][35] The linear thermal-expansion coefficient of the set cement increases with the incorporation of carbonaceous materials when the temperature increases from 20 to 80 C in a water bath. 36 However, the thermal-expansion property of the set cement signicantly varies under dry environment and high temperature conditions than under a water-saturated condition.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the thermal expansion property and mechanical performance of oil well cement with carbonaceous admixtures

Chang

et al. 2017

RSC Adv.

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Effect of petroleum (pet) coke addition on the density and thermal conductivity of cement pastes and mortars

Cited by 38 publications

References 28 publications

Effect of silica aerogel on the thermal conductivity of cement paste for the construction of concrete buildings in sustainable cities

Effect of silica aerogel on the thermal conductivity of cement paste for the construction of concrete buildings in sustainable cities

Wood Bottom Ash and GeoSilex: A By-Product of the Acetylene Industry as Alternative Raw Materials in Calcium Silicate Units

Experimental study on the thermal expansion property and mechanical performance of oil well cement with carbonaceous admixtures

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