Heat of hydration of blended cement containing treated ground palm oil fuel ash

Chandara, Chea; Azizli, Khairun Azizi Mohd; Ahmad, Zainal Arifin; Hashim, Syed Fuad Saiyid; Sakai, Etsuo

doi:10.1016/j.conbuildmat.2011.08.011

Cited by 61 publications

(30 citation statements)

References 14 publications

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“…A similar observation has been reported by Awal and Shehu [8], who found a reduction in temperature in concrete containing high volume POFA as compared to that in OPC concrete. The results obtained are also in agreement with Chandara et al [37], who found that the total heat of hydration of blended cement pastes containing POFA was lower than that of OPC paste. …”

Section: Heat Of Hydrationsupporting

confidence: 83%

Mechanical Properties and Thermal Behaviour of Two-Stage Concrete Containing Palm Oil Fuel Ash

Awal¹

2017

GEOMATE

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Two-stage concrete (TSC) is a special type of concrete which is made by placing coarse aggregate in a formwork and injecting a grout either by pump or under the gravity force to fill the voids. Over the decades, the application of supplementary cementing materials in conventional concrete has become widespread, and this trend is expected to continue in TSC as well. Palm oil fuel ash (POFA) is one of the ashes which has been recognized as a good pozzolanic material. This paper presents the experimental results on the performance behaviour of POFA in developing physical and mechanical properties of two-stage concrete. Four concrete mixes namely, TSC with 100% OPC as a control, and TSC with 10, 20 and 30% POFA were cast, and the temperature growth due to heat of hydration and heat transfer in the mixes was recorded. It has been found that POFA significantly reduced the temperature rise in two-stage aggregate concrete and delayed the transfer of heat to the mass of concrete. The compressive and tensile strengths, however, increased with the replacement of up to 20% POFA. The results obtained and the observation made in this study suggest that the substitution of OPC by POFA is beneficial, particularly for prepacked mass concrete where thermal cracking due to extreme heat rise is of great importance.

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Section: Heat Of Hydrationsupporting

confidence: 83%

Mechanical Properties and Thermal Behaviour of Two-Stage Concrete Containing Palm Oil Fuel Ash

Awal¹

2017

GEOMATE

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“…The adsorption of its molecules on the surface of the cement particles hindered the reaction with water, delaying the hydration peak and lowering the heat production rate [2].…”

Section: Conduction Calorimetry Parametersmentioning

confidence: 99%

“…This is one of the critical factors in the design and construction of voluminous bulk concrete elements under 0.5 m thick, which may crack due to the temperature gradients generated [2,3].…”

Section: Introductionmentioning

confidence: 99%

New additions for eco-efficient cement design. Impact on calorimetric behaviour and comparison of test methods

et al. 2016

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The pursuit of new alternative construction materials has intensified substantially in recent years due to the economic, technical and environmental benefits deriving from their use. The study of the effect of such materials on heat of hydration is of particular importance, for any rise in that parameter may shorten the service life of concrete structures considerably. This paper describes an in-depth study of including clay-based sanitary ware (SW) and construction and demolition (CDW) waste as active additions in clinker manufacture and their effect on the total heat of hydration measured with isothermal and semi-adiabatic calorimetry. Clay-based SW waste induced a greater decline in the heat production rate, temperature rise and total heat than CDW waste. Moreover, the downslopes steepened with increasing replacement ratios. A linear relationship was observed between the values for total heat of hydration found with the two test methods. The type of waste, replacement ratio and the interaction between these two parameters had a significant impact on heat of hydration.

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“…This differential may result in thermal stress and undesirable thermal cracking for concrete elements with internal or external restraints. The heat of hydration also has a negative effect on the durability of concrete owing to the volume changes of the elements, resulting in internal microcrack formation (Chandara et al, 2012). With increasing construction of high-rise and large-space structures, reducing the heat of hydration at the core of massive concrete elements is becoming more important.…”

Section: Introductionmentioning

confidence: 99%

Implementing ternary supplementary cementing binder for reduction of the heat of hydration of concrete

Yang

Moon

Jeon

2016

Journal of Cleaner Production

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Heat of hydration of blended cement containing treated ground palm oil fuel ash

Cited by 61 publications

References 14 publications

Mechanical Properties and Thermal Behaviour of Two-Stage Concrete Containing Palm Oil Fuel Ash

Mechanical Properties and Thermal Behaviour of Two-Stage Concrete Containing Palm Oil Fuel Ash

New additions for eco-efficient cement design. Impact on calorimetric behaviour and comparison of test methods

Implementing ternary supplementary cementing binder for reduction of the heat of hydration of concrete

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