Engineering, Durability, and Sustainability Properties Analysis of High-Volume, PCC Ash-Based Concrete

Lee, Jae-Hyun; Lee, Tae-Gyu; Jeong, Jaewook; Jeong, Jaemin

doi:10.3390/su12093520

Cited by 4 publications

(3 citation statements)

References 54 publications

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“…The relative dynamic elastic modulus [39,40] can be used to reflect the internal damage of concrete specimens after dry-wet cycles in a sulfate environment and to evaluate the durability of concrete. Using an NN-4B non-metallic ultrasonic testing analyzer to measure the relative wave velocity of the sample, to calculate the relative dynamic elastic modulus of the specimen, the following formula [41] was used:…”

Section: Relative Dynamic Elastic Modulus Analysismentioning

confidence: 99%

Mechanical Properties and Microstructure of Rubber Concrete under Coupling Action of Sulfate Attack and Dry–Wet Cycle

Heng

Pang

2023

Sustainability

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In order to study the mechanical properties of rubber concrete (RC) with different rubber particle sizes after dry–wet cycles in a sulfate environment, apparent morphology analysis, mass loss analysis, relative dynamic elastic modulus analysis, compressive strength loss analysis, internal microscopic characteristics and deterioration degree analysis of ordinary concrete (NC) and rubber concrete after dry–wet cycles were compared and analyzed. The results show that with the increase in the number of dry–wet cycles, the surface caves of rubber concrete increase, the internal microcracks develop and penetrate, and the macroscopic strength increases first and then decreases significantly. The high elasticity of rubber effectively improves the expansion force caused by sulfate attack and the dry–wet cycle. The deterioration degree of RC in each dry–wet cycle stage is obviously better than that of NC. When the rubber particle size is 0.85 mm, the performance of the sample is the best. After 120 days of dry–wet cycle, the compressive strength is reduced by 37.4%, and the compressive strength of concrete with a rubber particle size of 0.85 mm is reduced by 11.2%. After cyclic loading, the deterioration degree of concrete is 5.1% lower than that of ordinary concrete.

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Section: Relative Dynamic Elastic Modulus Analysismentioning

confidence: 99%

Mechanical Properties and Microstructure of Rubber Concrete under Coupling Action of Sulfate Attack and Dry–Wet Cycle

Heng

Pang

2023

Sustainability

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“…Thus, with increasing concrete strength, CO 2 emissions also increase. Therefore, Lee et al [63] proposed to introduce a parameter that would evaluate CO 2 emissions for concretes with a binder content, which corresponds to an increase in strength of 1 MPa. Based on this philosophy, he used an indicator, which is defined as the ratio of the CO 2 eq of concrete and its strength.…”

Section: Sustainability Analysismentioning

confidence: 99%

“…The rate of depletion of raw materials is represented by the amount of natural aggregate m(NGA) used in the concrete in kg and the technical parameters are represented by the concrete compressive strength f c (MPa) and frost resistance coefficient (FRC) of the concrete, Equation (3). The SUI resources indicator corresponds to the indicator used in [63], where the authors evaluate the binder intensity in kg to compressive strength of concrete.…”

Section: Sustainability Analysismentioning

confidence: 99%

Sustainability Potential Evaluation of Concrete with Steel Slag Aggregates by the LCA Method

et al. 2020

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Sustainability in the construction industry refers to all resource-efficient and environmentally responsible processes throughout the life cycle of a structure. Green buildings may incorporate reused, recycled, or recovered materials in their construction. Concrete is as an important building material. Due to the implementation of by-products and waste from various industries into its structure, concrete represents a significant sustainable material. Steel slag has great potential for its reuse in concrete production. Despite its volume changes over time, steel slag can be applied in concrete as a cement replacement (normally) or as a substitute for natural aggregates (rarely). This paper focused on an investigation of concrete with steel slag as a substitute of natural gravel aggregate. Testing physical and mechanical properties of nontraditional concrete with steel slag as a substitute for natural aggregates of 4/8 mm and 8/16 mm fractions confirmed the possibility of using slag as a partial replacement of natural aggregate. Several samples of concrete with steel slag achieved even better mechanical parameters (e.g., compressive strength, frost resistance) than samples with natural aggregate. Moreover, a life cycle assessment (LCA) was performed within the system boundaries cradle-to-gate. The LCA results showed that replacements of natural aggregates significantly affected the utilization rate of nonrenewable raw materials and reduced the overall negative impacts of concrete on the environment up to 7%. The sustainability indicators (SUI), which considered the LCA data together with the technical parameters of concrete, were set to evaluate sustainability of the analyzed concretes. Based on the SUI results, replacing only one fraction of natural gravel aggregate in concrete was a more sustainable solution than replacing both fractions at once. These results confirmed the benefits of using waste to produce sustainable materials in construction industry.

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Mass Concrete with EAF Steel Slag Aggregate: Workability, Strength, Temperature Rise, and Environmental Performance

et al. 2022

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Temperature control is the primary concern during the design and construction process of mass concrete structures. As the concrete production has an enormous negative environmental impact, the development of green mass concretes will eventually become as important as the thermal characteristics. Therefore, this paper investigates the use of Electric Arc Furnace (EAF) steel slag aggregate for the partial replacement of the natural aggregate in the production of mass concrete. The impact of EAF steel aggregate on mass concrete workability, strength, and thermal behaviour was analysed. In addition, a cradle-to-gate LCA study was conducted to evaluate the environmental footprint and sustainability potential of the tested mass concrete mixtures. The study results suggest that the use of EAF steel slag aggregate in combination with a low-heat cement with a high content of blast furnace slag can significantly lower the temperature, reduce the environmental impact, and increase the sustainability potential of mass concrete, while at the same time providing sufficient workability and compressive strength. The study results indicate that EAF steel slag can be upcycled into an aggregate for the production of green mass concrete mixtures.

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Engineering, Durability, and Sustainability Properties Analysis of High-Volume, PCC Ash-Based Concrete

Cited by 4 publications

References 54 publications

Mechanical Properties and Microstructure of Rubber Concrete under Coupling Action of Sulfate Attack and Dry–Wet Cycle

Mechanical Properties and Microstructure of Rubber Concrete under Coupling Action of Sulfate Attack and Dry–Wet Cycle

Sustainability Potential Evaluation of Concrete with Steel Slag Aggregates by the LCA Method

Mass Concrete with EAF Steel Slag Aggregate: Workability, Strength, Temperature Rise, and Environmental Performance

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