Eco-friendly concrete with scrap-tyre-rubber-based aggregate – Properties and thermal stability

Záleská, Martina; Pavlík, Zbyšek; Čítek, David; Jankovský, Ondřej; Pavlíková, Milena

doi:10.1016/j.conbuildmat.2019.07.168

Cited by 98 publications

(50 citation statements)

References 54 publications

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“…The Chapelle test showed fixation of 746 mg Ca(OH) 2 /g of lava aggregate fine fraction (particle size <0.063 mm), which proved its reactivity in lime- and cement-based blends. According to Raverdy et al [68,69,70,71,72,73,74], material is considered as pozzolana active if its Chapelle reactivity is ≥650 mg of Ca(OH) 2 /g of material. This condition was safely fulfilled.…”

Section: Methodsmentioning

confidence: 99%

“…According to the total alkali-silica (TAS) classification diagram (dependence of (Na 2 O + K 2 O) wt.% content on SiO 2 wt.% content) for volcanic rocks, the applied lava sand belongs to ultrabasic basaltic rocks, namely, tephrites [69]. As reported, e.g., by Wakizaka [70] and Jozwiak-Niedzwiedzka [71], igneous rocks containing volcanic glass can be potentially dangerous in terms of alkali silica reaction (ASR). However, it was not this case, because alkali volcanic rocks-based aggregates are deleterious in terms of ASR, as their chemical composition expressed in wt.% exhibits the following chemical character: SiO 2 > 50%, K 2 O > 3%, CaO < 5%, and MgO < 3% [72].…”

Section: Methodsmentioning

confidence: 99%

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Mortars with Crushed Lava Granulate for Repair of Damp Historical Buildings

et al. 2019

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In this paper, crushed lava granulate was used as full silica sand replacement in composition of repair mortars based on hydrated lime, natural hydraulic lime, or cement-lime binder. Lava granules were analyzed by X-ray fluorescence analysis (XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Particle size distribution of both silica and lava aggregates was assessed using standard sieve analysis. Hygrothermal function of the developed lightweight materials was characterized by the measurement of complete set of hygric, thermal, and structural parameters of the hardened mortar samples that were tested for both 28 days and 90 days cured specimens. As the repair mortars must also meet requirements on mechanical performance, their compressive strength, flexural strength, and dynamic Young’s modulus were tested. The newly developed mortars composed of lava aggregate and hydrated lime or natural hydraulic lime met technical, functional, compatibility, and performance criteria on masonry and rendering materials, and were found well applicable for repair of historically valuable buildings.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Mortars with Crushed Lava Granulate for Repair of Damp Historical Buildings

et al. 2019

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“…The simpler methods are their use as inert filler for constructions [5,6] and as road asphalt [7] or for the direct production of raw materials such as rubber [8][9][10] and textiles [11]. Alternatively, thermochemical routes are cost-effective approaches for end-life tires treatment avoiding the complexity of alternative management routes [12] such their conversion through pyrolytic techniques [13,14].…”

Section: Introductionmentioning

confidence: 99%

Catalytic oxidative desulphurization of pyrolytic oils to fuels over different waste derived carbon-based catalysts

Tamborrino

Costamagna

Bartoli

et al. 2021

Fuel

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In this work, we reported the conversion though carbothermal process of two catalysts produced by pyrolyzing exhausted coffee and waste tires. We tailored the surface with anchored iron nanoparticles through a facile carbothermal route and tested them for catalytic oxidative desulphurization of high sulphur content oil derived from tires pyrolysis. We studied their activity in a biphasic system under different conditions reaching a desulphurization of up to of 60% by using an oil with a sulphur concentration of up to 7139 ppm. The extensive characterization proved the reliability of those materials as promising catalysts for upgrading of sulphur rich drop-in fuels.

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“…Thus, its use as filler in the mortar seems to be a very promising option, which allows it to be applied as a thermal insulation material. In another similar approach, Záleská et al [24] studied the recycling of pneumatic waste (tire) mixed with cement concrete. The results indicate that the addition of these aggregates resulted in a decrease in weight, a deterioration of mechanical parameters, and a significant reduction in the thermal conductivity of concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Thermal Behavior of Exterior Coating Textures of Building in Hot and Arid Climates

Boukhelkhal¹,

Bourbia²

2021

Sustainability

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The building envelope is the barrier between the interior and exterior environments. It has many important functions, including protecting the interior space from the climatic variations through its envelope materials and design elements, as well as reduction of energy consumption and improving indoor thermal comfort. Furthermore, exterior building sidings, in addition to their aesthetic appearance, can have useful textures for reducing solar gains and providing good thermal insulation performance. This research examined and evaluated the effect of external siding texture and geometry on energy performance. For this objective, a field in situ testing and investigation of surface temperature was carried out on four samples (test boxes) with different exterior textures and different orientations, under the climate zone of Constantine–Algeria during the summer period. The results indicated significant dependability between the exterior texture geometry, the percentage of shadow projected, and external surface temperature. The second part of the research involved a similar approach, exploring the effect of three types of particles with the same appearance but with different thermal characteristics. It was concluded that the natural plant aggregates “palm particles” had the best performance, which contributed to a significant reduction of external surface temperature reaching 4.3 °C, which meant decreasing the energy consumption.

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Eco-friendly concrete with scrap-tyre-rubber-based aggregate – Properties and thermal stability

Cited by 98 publications

References 54 publications

Mortars with Crushed Lava Granulate for Repair of Damp Historical Buildings

Mortars with Crushed Lava Granulate for Repair of Damp Historical Buildings

Catalytic oxidative desulphurization of pyrolytic oils to fuels over different waste derived carbon-based catalysts

Experimental Study on the Thermal Behavior of Exterior Coating Textures of Building in Hot and Arid Climates

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