Heat of hydration of concrete containing powdered scoria rock as a natural pozzolanic material

Alhozaimy, Abdulrahman M.; Fares, Galal; Alawad, O.A.; Al‐Negheimish, Abdulaziz I.

doi:10.1016/j.conbuildmat.2015.02.011

Cited by 30 publications

(15 citation statements)

References 11 publications

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“…At the meanwhile, the hydration of cementitious materials is an exothermic reaction [15][16][17]. The core temperature of concrete structure can reach and even exceed 50°C.…”

Section: Introductionmentioning

confidence: 99%

Hydration and microstructures of concrete containing raw or densified silica fume at different curing temperatures

Zhang

Yan

2016

Construction and Building Materials

109

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“…At the meanwhile, the hydration of cementitious materials is an exothermic reaction [15][16][17]. The core temperature of concrete structure can reach and even exceed 50°C.…”

Section: Introductionmentioning

confidence: 99%

Hydration and microstructures of concrete containing raw or densified silica fume at different curing temperatures

Zhang

Yan

2016

Construction and Building Materials

109

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“…The data have used for design and placement or structural function. A kind of concrete characteristic is concrete strength and heat hydration [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Concrete strength is an indicator of concrete quality, and heat hydration is an indicator of period time hydration reaction and setting time.…”

Section: Introductionmentioning

confidence: 99%

Heat Hydration of Recycled Concrete: Experimental Study

Suharwanto¹

2020

Proceedings of the International Conference on Agriculture, Social Sciences, Education, Technology and Health (ICASSETH 2019)

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The experimental study has been done to get data of heat hydration. It important to know the temperature in the concrete during hydration reaction and forming a gel condition of silica reaction with water. Eighteen concrete specimens of cubes have been tested for many dimensions, those are cube 25cm, 50cm, 75cm for length all of side. They made from a fine and coarse aggregate of natural and recycled aggregate from burning building waste and ready-mix residual as a base concrete material. Base on the experimental study, the peak of heat hydration occurs at 10 to 21 hours. Then it will decrease that caused by hydration reaction will be complete and form to gel condition. The heat hydration in the concrete is not affected by site or room temperature, because it is caused by the hydration reaction process between silica and water until gel condition. The peak of heat hydration will increase along with higher concrete strength because it requires more cement that is reactor with water. It can affect to surface cracking for the mass concrete because it causes increasing adiabatic to fresh concrete in the early age. And it also affects a volumetric expansion in the core, so the surface of concrete gets excessive tensile stress beyond of capacity.

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“…Hydration of cement generates heat since it is an exothermic reaction. This generated heat dissipates rapidly in concrete elements with relatively small dimension [1]. But, for massive concrete structures, the hydration process causes accumulation of heat inside the structures.…”

Section: Introductionmentioning

confidence: 99%

“…The difference in temperature between center and surface of the mass concrete results in temperature gradient which leads to thermal cracking especially at early age [2][3][4][5]. Thermal cracking results in deterioration and reduces service life of concrete structures [1]. Therefore, predicting temperature rise is beneficial for evaluating thermal cracking potential of mass concrete.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Models for Predicting Hydration Degree and Adiabatic Temperature Rise of Mass Concrete containing Ground Granulated Blast Furnace Slag

Dabarera¹,

Saengsoy²,

Kaewmanee³

et al. 2017

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Predicting adiabatic temperature rise is essentially useful for investigating thermal cracking potential especially in early stage of mass concrete. Existing prediction methods and models have some problems such as constant thermal properties are mostly utilized for predicting temperature rise. This study is aimed to develop time-dependent models for predicting hydration degrees of cement and slag, free water amount, specific heat, and total heat generation of concrete incorporating slag. These models are then composed to predict the adiabatic temperature rise of mass concrete incorporating slag. The model is able to predict adiabatic temperature rise in mass concrete with different water to binder ratios, slag replacements, physical properties of slag, and initial temperature conditions. The validity of the proposed model was evaluated by comparing the model predictions with test results for adiabatic temperature rise of slag concrete. The model simulations can be used to predict the experimentally measured data from different sources.

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Heat of hydration of concrete containing powdered scoria rock as a natural pozzolanic material

Cited by 30 publications

References 11 publications

Hydration and microstructures of concrete containing raw or densified silica fume at different curing temperatures

Hydration and microstructures of concrete containing raw or densified silica fume at different curing temperatures

Heat Hydration of Recycled Concrete: Experimental Study

Models for Predicting Hydration Degree and Adiabatic Temperature Rise of Mass Concrete containing Ground Granulated Blast Furnace Slag

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