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Relevant bibliographies by topics / Calcareous and siliceous aggregate

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Journal articles

Academic literature on the topic 'Calcareous and siliceous aggregate'

Author: Grafiati

Published: 4 June 2021

Last updated: 8 February 2022

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Journal articles on the topic "Calcareous and siliceous aggregate"

1

Zhang, Qian Qian, Guang Lin Yuan, and Ya Nan Dong. "Influence of Cooling Methods and Standing Time on Different Aggregate Concrete Strengths after Elevated Temperature." Advanced Materials Research 250-253 (May 2011): 155–59. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.155.

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After heated to high temperature, the strength test of concrete cube specimens made by siliceous and calcareous coarse aggregates was carried out. We analyzed the influence of cooling methods and standing time on concrete compressive strength respectively. The test results show that the compressive strength is generally decreased with increase in temperature. The relative residual strength of calcareous aggregate concrete is higher than siliceous aggregate concrete at higher temperature, so siliceous aggregate concrete has more significant fire resistance than calcareous aggregate concrete. Be

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2

Fragata, A., and R. Veiga. "Air Lime Mortars: The Influence of Calcareous Aggregate and Filler Addition." Materials Science Forum 636-637 (January 2010): 1280–85. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.1280.

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Many historical buildings with renders based in air lime still exist in Portugal. These old mortars have proved to be durable and reliable materials. However, new lime mortars prepared nowadays to be used in conservation practice, often present low strength in comparison with cement mortars. This paper presents a study of the viability of improving the performance of lime mortars through the use of different nature aggregates (Tagus River siliceous sand and crushed calcareous sand) as well as different size distributions, varying the filler contents. For that purpose a set of mortars with volu

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3

Rutkowska, Gabriela, Krzysztof Wiśniewski, Marek Chalecki, Mirosława Górecka, and Kamil Miłosek. "Influence of fly-ashes on properties of ordinary concretes." Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation 48, no. 1 (2016): 79–94. http://dx.doi.org/10.1515/sggw-2016-0007.

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Abstract Influence of fly-ashes on properties of ordinary concretes. Care of the environment in accordance with the principles of sustainable development introduces the possibility and need for waste recycling. The construction and building materials industry has the greatest potential for reuse of waste. The article presents the results of investigations of selected properties (consistency, water absorbability, compressive strength and tensile strength after 28 and 56 days of curing, depth of penetration) of ordinary concretes and concretes containing fly-ashes - calcareous and siliceous ash

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4

R., R. Niry, A. L. Beaucour, R. Hebert, A. Noumowé, B. Ledésert, and R. Bodet. "Thermal stability of different siliceous and calcareous aggregates subjected to high temperature." MATEC Web of Conferences 6 (2013): 07001. http://dx.doi.org/10.1051/matecconf/20130607001.

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5

Frías, Moisés, Raquel Vigil de la Villa, Sagrario Martínez-Ramírez, Lucía Fernández-Carrasco, Ernesto Villar-Cociña, and Rosario García-Giménez. "Multi-Technique Characterization of a Fine Fraction of CDW and Assessment of Reactivity in a CDW/Lime System." Minerals 10, no. 7 (2020): 590. http://dx.doi.org/10.3390/min10070590.

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This study analysed the fine particle (<5 mm) waste generated during siliceous or calcareous (depending on the composition of the original aggregate) concrete waste crushing. In the absence of industrial applications, such waste is amassed in open-air stockpiles on construction and demolition wastes (CDW) management plant grounds. The aim pursued was to find an outlet for that material in the cement industry. The starting waste, sourced from six Spanish management facilities, was characterised for its chemical and mineralogical composition, physical properties and pozzolanicity. The mineral

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6

Niry Razafinjato, Rijaniaina, Anne-Lise Beaucour, Ronan L. Hebert, Béatrice Ledesert, Raphaël Bodet, and Albert Noumowe. "High temperature behaviour of a wide petrographic range of siliceous and calcareous aggregates for concretes." Construction and Building Materials 123 (October 2016): 261–73. http://dx.doi.org/10.1016/j.conbuildmat.2016.06.097.

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7

Adresi, Mostafa, and Giuseppe Lacidogna. "Investigating the Micro/Macro-Texture Performance of Roller-Compacted Concrete Pavement under Simulated Traffic Abrasion." Applied Sciences 11, no. 12 (2021): 5704. http://dx.doi.org/10.3390/app11125704.

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Since the roller-compacted concrete pavement (RCCP) is almost smooth due to roller vibrations in the construction process, the lack of macro-texture prevents it from being used as a final surface. This study has made efforts to improve the RCCP by proposing different scenarios to create new micro-/macro-texture surfaces and investigate their durability and skid resistance under traffic abrasion conditions. To prepare the micro-texture, eight RCCP specimens were cast using various 50–50% mixing proportions, and each of them alone in the form of siliceous and calcareous fine aggregates (natural

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8

Nicoara, Adrian Ionut, Alexandra Elena Stoica, Mirijam Vrabec, et al. "End-of-Life Materials Used as Supplementary Cementitious Materials in the Concrete Industry." Materials 13, no. 8 (2020): 1954. http://dx.doi.org/10.3390/ma13081954.

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A sustainable solution for the global construction industry can be partial substitution of Ordinary Portland Cement (OPC) by use of supplementary cementitious materials (SCMs) sourced from industrial end-of-life (EOL) products that contain calcareous, siliceous and aluminous materials. Candidate EOL materials include fly ash (FA), silica fume (SF), natural pozzolanic materials like sugarcane bagasse ash (SBA), palm oil fuel ash (POFA), rice husk ash (RHA), mine tailings, marble dust, construction and demolition debris (CDD). Studies have revealed these materials to be cementitious and/or pozzo

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9

Gooday, Andrew J., Genoveva F. Esteban, and Ken J. Clarke. "Organic and siliceous protistan scales in north-east Atlantic abyssal sediments." Journal of the Marine Biological Association of the United Kingdom 86, no. 4 (2006): 679–88. http://dx.doi.org/10.1017/s0025315406013567.

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We report the occurrence of a high diversity of minute (∼1 μm diameter) organic and siliceous protistan scales in small samples (total volume ∼35 μl) of superficial sediment from the Porcupine Abyssal Plain (PAP), north-east Atlantic (4850 m water depth). Many exhibit characters by which they can be identified to species. The organic scales belong to the haptophyte genera Chrysochromulina (8–9 species), Chrysocampanula and Dolichomastix (1 species each). The siliceous scales belong to the chrysophytes Paraphysomonas vestita and Meringosphaera sp. and to the heterotrophic flagellate genus Thaum

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10

Breitenbücher, Rolf, Jan Bäcker, Sebastian Kunz, Andreas Ehrenberg, and Christian Gerten. "Optimizing the Acid Resistance of Concrete with Granulated Blast-Furnace Slag." MATEC Web of Conferences 199 (2018): 02001. http://dx.doi.org/10.1051/matecconf/201819902001.

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Concrete for agricultural or industrial applications is often subject to intense acid attack. Most affected structures are sewage structures and biogas plants, natural draught cooling towers or silage silos. Widely independent from acid type, in most cases the acid attack on concrete runs the same way, starting with dissolution of easily soluble calcareous phases like calcium hydroxide. With ongoing attack, calcium-silicate-hydrate crystals (CSH) are also affected by acidic media. In contrast, siliceous phases like silicon-dioxide (SiO2) are widely unaffected by acid attack. While the dissolut

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