Quantitative Analysis of Slag Content in Anhydrous and Hardened Blast-Furnace Slag Cement

Hanehara, Shunsuke; Nito, Nobukazu; Koibuchi, Kiyoshi; Oyamada, Tetsuya

doi:10.14250/cement.64.575

Cited by 1 publication

(4 citation statements)

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“…It is reported that as the fineness increases, the hydration degree of slag increases due to higher contact area for the reaction to progress [13]. The model proposed in this study is based on the factors and similar tendencies with the results reported in [9][10][11][12][13][14], however, there is still lack of test results to compare the simulated hydration degree of slag in the case of concrete. The proposed equation for computing hydration degree of slag is shown in Eq.…”

Section: Model For Predicting Hydration Degree Of Slagmentioning

confidence: 57%

“…It was found that hydration degree of slag increases with temperature and w/b ratio, whereas, it decreases with increasing replacement level. Previous studies carried out in Japan [11,13] observed that hydration degree increases as the fineness of slag increase indicating the importance of physical properties of the slag particles towards hydration. Analysing experimental results from selective dissolution method from different sources could be beneficial to develop a generalized model to quantitatively determine hydration degree of slag.…”

Section: Introductionmentioning

confidence: 90%

“…Therefore, the model equation is obtained using the method of back analysis from adiabatic temperature results of slag concrete from K. Tada et al [16]. However, the tendencies of previously obtained results from selective dissolution method by [10][11][12][13] are also studied to investigate the key parameters affecting the hydration degree of slag. The key parameters of the model for predicting hydration degree of slag are age, water to binder ratio, concrete temperature, slag replacement ratio and fineness of the slag.…”

Section: Model For Predicting Hydration Degree Of Slagmentioning

confidence: 99%

“…Among these tests, selective dissolution method is a comparatively simple, effective and accurate method to obtain hydration degree of slag. It is based on a preferential chemical dissolution of all the other products except unreacted slag [9][10][11][12]. The hydration degree can then be calculated based on the ratio between the reacted amount of slag per total amount of slag in the paste mixture.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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