The Hydration, Mechanical, Autogenous Shrinkage, Durability, and Sustainability Properties of Cement–Limestone–Slag Ternary Composites

Xuan, Mei-Yu; Han, Yi; Wang, Xiao-Yong

doi:10.3390/su13041881

Cited by 17 publications

(12 citation statements)

References 57 publications

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“…A noticeable acceleration of the alite reaction occurs, as indicated by the shortening of the induction phase, which can be seen in Figure 7 . Increased hydration rates of cements with limestone addition have also been noted by Zajac et al [ 49 ], Xuan et al [ 40 ], and Puerta-Falla [ 50 ].…”

Section: Resultssupporting

confidence: 59%

“…The range of limestone addition was set to 5–15%. Previous research [ 40 , 41 ], as well as previous tests by the authors [ 41 ], had shown that using more than 15% of limestone can greatly decrease the strength of mortars and concrete. Seeing as the assumption of undertaken research was to create and test cements that could be easily implemented in practice, the highest addition of limestone was set to 15%.…”

Section: Methodsmentioning

confidence: 98%

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Study of the Properties of Blended Cements Containing Various Types of Slag Cements and Limestone Powder

Gołaszewska

Giergiczny

2021

Materials

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It is currently vital to use more environmentally friendly cementitious composites, such as blended slag-limestone cements. However, many properties of slag-limestone cements are not yet fully research, especially in regards to the effect of limestone properties on properties of mortars and concrete. In the research, three types of slag cements were mixed with two types of limestone to obtain multi-component slag-limestone cements. Tests of rheological properties, heat of hydration, and compressive strength were conducted to ascertain the effect of limestone on the cement properties and to check the viability of this type of cement for engineering practice. It was found that the addition of up to 10% of limestone to slag cements did not have negative effects on tested properties; however, the exact influence of limestone was dependent on limestone particle size distribution. Increasing the amount of limestone in limestone-slag cements to 15% significantly decreased the compressive strength of the mortars and decreased hydration heat but had no significant effect on rheological properties.

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Section: Resultssupporting

confidence: 59%

Section: Methodsmentioning

confidence: 98%

Study of the Properties of Blended Cements Containing Various Types of Slag Cements and Limestone Powder

Gołaszewska

Giergiczny

2021

Materials

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“…Fourth, based on the experimental results of this study, SAP can be used as a component of high-strength concrete which has a low water/binder ratio [37]. SAP can lower the AS of hardening high-strength concrete and mitigate cracks due to AS.…”

Section: Discussionmentioning

confidence: 84%

“…As shown in Figure 5, the development of AS can be divided into the following three stages: rapid growth period at initial ages, stable period at middle ages, and continuous growth period at later ages. There are five reasons for the change in AS: (i) cement hydration consumes water and the internal relative humidity decreases, resulting in a rapid increase in AS (shrinkage factor) [12]; (ii) the densification of the internal pore structure, resulting in increased AS (shrinkage factor) [33]; (iii) the pozzolanic reaction of silica fume and slag to produce dense C-S-H, as well as to promote AS development (i.e., shrinkage factor) [34]; (iv) the production of AFm and internal temperature changes leading to expansion (expansion factor) [35]; (V) limestone stabilizes the produced ettringite and causes expansion (expansion factor) [36,37]. The final macroresponse depends on changes in the dominant expansion and contraction factors.…”

Section: Autogenous Shrinkage (As) Coupled With Internal Relative Humidity and Temperaturementioning

confidence: 99%

Effect of Cement Types and Superabsorbent Polymers on the Properties of Sustainable Ultra-High-Performance Paste

Xuan

Wang

et al. 2021

Materials

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This study focuses on the effects of superabsorbent polymers (SAP) and belite-rich Portland cement (BPC) on the compressive strength, autogenous shrinkage (AS), and micro- and macroscopic performance of sustainable, ultra-high-performance paste (SUHPP). Several experimental studies were conducted, including compressive strength, AS, isothermal calorimetry, X-ray diffraction (XRD), thermogravimetric analysis (TGA), attenuated total reflectance (ATR)–Fourier-transform infrared spectroscopy (FTIR), ultra-sonic pulse velocity (UPV), and electrical resistivity. The following conclusions can be made based on the experimental results: (1) a small amount of SAP has a strength promotion effect during the first 3 days, while BPC can significantly improve the strength over the following 28 days. (2) SAP slows down the internal relative humidity reduction and effectively reduces the development of AS. BPC specimens show a lower AS than other specimens. The AS shows a linear relationship with the internal relative humidity. (3) Specimens with SAP possess higher cumulative hydration heat than control specimens. The slow hydration rate in the BPC effectively reduces the exothermic heat. (4) With the increase in SAP, the calcium hydroxide (CH) and combined water content increases, and SAP thus improves the effect on cement hydration. The contents of CH and combined water in BPC specimens are lower than those in the ordinary Portland cement (OPC) specimen. (5) All samples display rapid hydration of the cement in the first 3 days, with a high rate of UPV development. Strength is an exponential function of UPVs. (6) The electrical resistivity is reduced due to the increase in porosity caused by the release of water from SAP. From 3 to 28 days, BPC specimens show a greater increment in electrical resistivity than other specimens.

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“…Mineral additives, natural or byproduct materials, are widely used in blended cement systems to improve the chemical properties, i.e., hydration reactions, the mechanical properties such as strength, and the durability of concretes [9,10]. Among mineral additives used, ground granulated blast furnace slag (GGBFS), fly ash (FA), and limestone filler (LF) are the most commonly used for cement replacement.…”

Section: Introductionmentioning

confidence: 99%

Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements

et al. 2021

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The reactivity effect of calcium carbonate, present in ground oyster shells and limestone filler, on the formation of carboaluminate phases in ground granulated blast furnace slag blended cement pastes was reported in this paper. Six different binary and ternary blended cement pastes were prepared using ground granulated blast furnace slag, ground oyster shells and limestone filler with different replacement levels (from 5 to 35%). The carboaluminate formation was assessed and quantified directly using X-ray diffraction (XRD), and indirectly by following the aluminate phase’s reaction (heat flow) and consumed calcium carbonate using Isothermal Calorimetry (IC) and Thermogravimetric Analysis (TGA), respectively. Further, the overall reaction degree calculated based on TGA results and the compressive strength were determined to support the findings obtained. The results revealed that the calcium carbonate present in ground oyster shells is more reactive when compared to that present in limestone filler, where more formed hemi- and monocarboaluminate phases were observed in mixtures containing ground oyster shells. An enhancement in compressive strength and overall reaction degree was observed by adding 5% ground oyster shells as cement replacement.

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The Hydration, Mechanical, Autogenous Shrinkage, Durability, and Sustainability Properties of Cement–Limestone–Slag Ternary Composites

Cited by 17 publications

References 57 publications

Study of the Properties of Blended Cements Containing Various Types of Slag Cements and Limestone Powder

Study of the Properties of Blended Cements Containing Various Types of Slag Cements and Limestone Powder

Effect of Cement Types and Superabsorbent Polymers on the Properties of Sustainable Ultra-High-Performance Paste

Reactivity Effect of Calcium Carbonate on the Formation of Carboaluminate Phases in Ground Granulated Blast Furnace Slag Blended Cements

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