Results 21 to 30 of about 155,781 (300)
Multiscale understanding of tricalcium silicate hydration reactions [PDF]
, 2017 Tricalcium silicate, the main constituent of Portland cement, hydrates to produce crystalline calcium hydroxide and calcium-silicate-hydrates (C-S-H) nanocrystalline gel. This hydration reaction is poorly understood at the nanoscale.
Cuesta-García, Ana María +8 more
core +4 more sources
Thermally induced behavior of the K-exchanged erionite. A further step in understanding the structural modifications of the erionite group upon heating [PDF]
, 2018 Fibrous erionite is a naturally occurring zeolite considered to be highly carcinogenic upon inhalation, even more than crocidolite. Since no iron is typically present in erionite, its toxicity has been attributed to ion-exchanged Fe participating in ...
Ballirano P. +5 more
core +1 more source
Quartz Powder Valorisation in White Self-Compacting Concrete: Mortar Level Study
Applied Sciences, 2023 Quartz powder (QP) from mining exploration has increased, and valorisation solutions are sought. QP incorporation in structural concrete is an exciting strategy for the growth and sustainable development of the concrete industry, waste management and ...
Ana Mafalda Matos +2 more
doaj +1 more source
Case Studies in Construction Materials, 2022 The paper is focused on the eco-efficiency calculations of recycled aggregate concrete (RAC) consisted of ordinary Portland and blast-furnace slag cements with three fine-grained wastes: quartz powder (Q), limestone powder (L) and fly ash (F).
Daniel Zawal, Anna M. Grabiec
doaj +1 more source
BuildingsTo enhance the microstructure and mechanical properties and to optimize the formulations of high-strength and high-flow ultra-high-performance concrete (UHPC), the effects of different quartz powder contents, fineness, and curing temperatures of UHPC ...
Jianguang Xu +9 more
doaj +1 more source
INVESTIGATION OF THE PROPERTIES OF THE SUSPENSIONS FOR NON-STICK COATINGS FOR FOUNDRY
Литьë и металлургия, 2015 The research aimed at figuring out dependence of the technological properties (density, thickness of the coating, reduced strength and sedimentation stability) of the suspensions for nonstick coatings on the for activation time powder quartz graphite ...
T. Gil’manshina +5 more
doaj +1 more source
Crystals, 2022 With the development of synthetic gem technology, a large number of synthetic rock crystals, such as natural and synthetic amethyst and natural and synthetic smoky quartz, have emerged in the market.
Kaichao Liu, Ying Guo
doaj +1 more source
Thermal Expansion of Fused Quartz Powder Compacts
Journal of the Ceramic Society of Japan, 1997 The fused quartz is one of the most typical materials of low thermal expansion. However, it was found that compacts prepared by isostatic compression of ground powder of fused quartz showed an anomalously high thermal expansion of 7×10-6/°C, i.e., about 10 times of that of the normal fused quartz. The density of the glass powder increased with grinding
Kenya HAMANO +3 more
openaire +2 more sources
Effect of Carbon-Doping in Bulk Superconducting MgB2 Samples
, 2001 Bulk superconducting samples of MgB2 were prepared by solid state reaction of stoichiometric quantities of Mg turnings and B in a sealed Ta cylinder at 890 C for 2 hours.
Bud'ko +7 more
core +1 more source
A novel method for the preparation of non-agglomerated nanometre sized particles of lanthanum phosphate phosphors utilising a high surface area support in the firing process [PDF]
, 2012 This journal is © The Royal Society of Chemistry 2012A convenient method is described that uses a quartz wool substrate to immobilise nanometre sized phosphor precursor particles enabling them to be fired at high temperature without sintering ...
Alireza Salimian +32 more
core +1 more source