Study on the Influence of Minor Constituents in Blast Furnace Slag Rich Cement on the Thermal and Mechanical Properties of Concrete

Mizobuchi, Toshiaki; Ishizeki, Kohsuke; Sagawa, Takahiro; Kanda, Tetsushi

doi:10.3151/jact.17.46

Cited by 6 publications

(3 citation statements)

References 4 publications

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“…Concrete is a filling material with significantly large volume heat capacity; this study [47][48][49] selected literature and books related to several kinds of commonly used concrete materials. Consequently, a few concrete groups, which comprise clay ceramic (aggregate) and an admixture (fly ash and blast furnace slag powder), are suitable for a low-temperature radiant floor.…”

Section: Screening Concrete Shtes Materialsmentioning

confidence: 99%

Numerical Simulation of Thermal Storage Performance of Different Concrete Floors

Wang

2022

Sustainability

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To improve the utilization rate of energy, the consumption of fossil energy must be reduced. In this study, a low-temperature radiant floor made of concrete is taken as the research object, and a two-dimensional low-temperature hot water radiant heating system with different concrete filling layers is numerically simulated using a computational fluid dynamics (CFD) software and finite element method. In this numerical model, a concrete sensible heat storage (SHTES) is adopted, while various types of concrete materials have been used to preliminarily analyze the influence of different concrete types on floor heat storage. The simulation results were further analyzed to determine the total heat storage during the heating period and the total heat storage and heat storage rate during the stable operation stage. The results demonstrate that the thermal conductivity coefficient of concrete floors had the most significant influence on the heat storage effect, with slag concrete demonstrating the most prominent heat storage effect. The total heat storage capacity of slag concrete after 7 h was 848.512 J. Overall, this study proposes a method to enhance the heat storage capacity of low-temperature radiant floors, while providing a design method for future solar energy storages and floor heat storages.

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Section: Screening Concrete Shtes Materialsmentioning

confidence: 99%

Numerical Simulation of Thermal Storage Performance of Different Concrete Floors

Wang

2022

Sustainability

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“…It can be seen that for the samples 4S45C and 8S45C, the carbonation coefficient decreases with curing in water at 40 • C, but there is no clear explanation for this behavior. The higher Blaine fineness may cause the high temperature-expansion coefficient owing to the hydration of BFS [31], which is needed to investigate the relationship between the self-healing effect of BFS with higher Blaine fineness and the temperature-expansion coefficient. Figure 12 shows the results of the accelerated carbonation test for the three stages (after deterioration and after two types of curing condition).…”

Section: Relative Dynamic Modulus Of Elasticity Bending Strength Compressive Strength and Carbonation Coefficient Of Mortar Samples Aftermentioning

confidence: 99%

Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag

Zhang

Taniguchi

et al. 2020

Materials

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This paper presents the results of an experimental investigation on the material properties and self-healing ability of a blended cement mortar incorporating blast furnace slag (BFS). The effect of different types and Blaine fineness of BFS on the material properties and self-healing was investigated. Thirteen cement mixtures with BFS of different types and degrees of Blaine fineness are tested to evaluate the mechanical properties, namely compressive strength, bending strength, freeze–thaw, and accelerated carbonation. The pore structure is examined by means of mercury intrusion porosimetry. Seven blended mortar mixtures incorporating BFS for cement are used to evaluate the mechanical properties after applying freeze–thaw cycles until the relative dynamic modulus of elasticity reached 60%. The experimental results reveal that incorporating BFS improves the mechanical properties and self-healing ability. In the investigation of self-healing, smaller particle and high replacement ratios of BFS contribute to increasing the relative dynamic modulus of elasticity and decreasing the carbonation coefficient in the mortar after re-water curing. Moreover, BFS’s larger particles and high replacement ratio are found to provide better self-healing ability. A regression equation is created to predict the relative dynamic modulus of elasticity in mortar considering the Blaine fineness, BFS replacement ratio, and curing conditions.

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“…People gradually shift the focus of research to the durability of concrete. Whether concrete can be used as one of the most important building structural materials for a long time depends on whether it can become a high durability and environment-friendly green material [2] . The early cracking of concrete structure is a common phenomenon in engineering.…”

Section: Introductionmentioning

confidence: 99%

Study on Crack Resistance of Hydraulic Roller Compacted Concrete Dam with Fly Ash Admixture

2021

E3S Web Conf.

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With the continuous improvement of the level of construction industry in modern industry, at the same time, the requirements of the construction industry for the crack resistance of concrete dams are also higher and higher. In the preparation stage of the experiment, the corresponding experimental materials and equipment are provided. In order to ensure that the concrete can meet the requirements of workability and strength grade, the proportion of materials is designed; During the experiment, the activity characteristics of fly ash admixture are extracted, the particle size distribution of admixture is tested, and the fracture data of hydraulic RCC dam is monitored; The experimental results show that when the ratio of cement and fly ash is 0.7:0.1, the number, width and area of concrete cracks are the minimum, which proves that the fly ash admixture under this ratio is more suitable for construction engineering.

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Study on the Influence of Minor Constituents in Blast Furnace Slag Rich Cement on the Thermal and Mechanical Properties of Concrete

Cited by 6 publications

References 4 publications

Numerical Simulation of Thermal Storage Performance of Different Concrete Floors

Numerical Simulation of Thermal Storage Performance of Different Concrete Floors

Experimental Investigation of Material Properties and Self-Healing Ability in a Blended Cement Mortar with Blast Furnace Slag

Study on Crack Resistance of Hydraulic Roller Compacted Concrete Dam with Fly Ash Admixture

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