Surface curing effect on reflection response of hardened cementitious mortar samples

Hasar, Uğur Cem; Izginli, Mucahit; Öztürk, Hamdullah; Korkmaz, Huseyin; Çevik, Abdülkadir; Irshidat, Mohammad R.

doi:10.1016/j.measurement.2021.110026

Cited by 3 publications

(2 citation statements)

References 19 publications

(31 reference statements)

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“…Due to the world's steadily growing population [1] and an unbroken trend toward urbanization, nearly 40 billion tons of sand are mined each year to meet the growing global demand for building materials [2]. Although this figure is already impressive, the global demand for sand could increase by 45% by 2060 and put this natural resource at risk [3,4]. As desert sand is unsuitable as a building material [5], it has to be mined or dredged from rivers, deltas, and marine and coastal ecosystems, causing environmental damage [6].…”

Section: Introductionmentioning

confidence: 99%

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The ability of different types of sand to preserve the integrity of calcium sulfoaluminate cement cement mortar during exposure to elevated temperatures

Tchekwagep

Zengyao

Yang

et al. 2022

Materials Science-Poland

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Due to the depletion of natural sand resources, it is urgent to develop synthetic sand that will replace the natural one in the production of concrete. In this study, we carried out descriptive inspection of mortar working performance, mechanical properties and internal cracking under three different application schemes of fine aggregate, including natural, artificial, and basalt sand. Tests showed that the mortar with river sand had more internal cracking and lowest strength as the temperature rises. The artificial and basalt sand had better resistance and less internal cracking than river sand at high temperature. The compressive strength of basalt sand mortar (BSM) was slightly higher than that of artificial sand mortar (ASM), while the compressive strength value of river sand mortar (RSM) was the lowest at room temperature. However, when heated to 100°C, the RSM had 48% loss of strength, followed by the BSM at 45.4% and ASM at 11.6%. Above 100°C, none of the mortar samples meet the requirement of the calcium sulfoaluminate cement 42.5. The average atomic ratios (Ca/Si, Ca/Al, and Ca/Si) for the ASM and BSM increased with the rise in temperature. XRD showed that above 100°C, the diffraction peaks of Ettringite (AFt) disappeared, the number of CaSO4 diffraction peaks decreased significantly, the intensity decreased, and a diffraction peak of CaCO3 appeared.

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Section: Introductionmentioning

confidence: 99%

“…For example, its particle sizes vary from 0.6 to 4.75 mm, and they have low percentages of dust, clay and other impurities, typically not more than 0.03%. The sand used in this experiment has a density of 1.6 g/cm 3 and a fineness modulus of 2.6. Figure 1 indicate the peaks of the specific element and their concentration in the river sand.…”

Section: Introductionmentioning

confidence: 99%

The ability of different types of sand to preserve the integrity of calcium sulfoaluminate cement cement mortar during exposure to elevated temperatures

Tchekwagep

Zengyao

Yang

et al. 2022

Materials Science-Poland

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Detection and quantification of alkali-silica-reaction (ASR) gel in cement-based mortars using microwave spectral and temporal transmission properties

et al. 2023

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Mechanical and Electromagnetic Properties of Self-Compacted Geopolymer Concretes With Nano Silica and Steel Fiber Additives

Hasar

Eren

Öztürk

et al. 2022

IEEE Trans. Instrum. Meas.

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Mechanical and electromagnetic properties (over 2-16 GHz) of self-compacted geopolymer concrete (SCGC) samples with different amounts of nanosilica (NS) and steel-fiber (SF) have been examined. From the mechanical tests, it is observed that, while the amount of NS added to SCGC samples does not make any noticeable change in compressive strength and modulus of elasticity values, an increase in the amount and/or aspect ratio of SF additives improves these values. From the electromagnetic tests, it is noted that the effect of SF on the reflection properties of SCGC samples is relatively smaller than the effect of NS. Besides, while the incorporation of NS improves the resonance characteristics of transmission properties, additives of SF decrease these properties over the entire frequency band. Finally, sample C7, which has 1% SF with a smaller diameter and 2% NS in reference to the mass of the binder, has the optimum NS and SF additives, producing maximum absorbance values.

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Surface curing effect on reflection response of hardened cementitious mortar samples

Cited by 3 publications

References 19 publications

The ability of different types of sand to preserve the integrity of calcium sulfoaluminate cement cement mortar during exposure to elevated temperatures

The ability of different types of sand to preserve the integrity of calcium sulfoaluminate cement cement mortar during exposure to elevated temperatures

Detection and quantification of alkali-silica-reaction (ASR) gel in cement-based mortars using microwave spectral and temporal transmission properties

Mechanical and Electromagnetic Properties of Self-Compacted Geopolymer Concretes With Nano Silica and Steel Fiber Additives

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