Results 311 to 320 of about 567,772 (379)
Some of the next articles are maybe not open access.
The Journal of Emergency Medicine, 2015
The common toxicities of cement are allergic dermatitis, abrasions, and chemical burns, but reports of cement ingestion are rare. In this study, we report a case of successful treatment of cement ingestion using emergency gastrointestinal endoscopy.An 83-year-old female was admitted to the emergency department with altered mental state and abdominal ...
Kyung Ho Kim +6 more
openaire +3 more sources
The common toxicities of cement are allergic dermatitis, abrasions, and chemical burns, but reports of cement ingestion are rare. In this study, we report a case of successful treatment of cement ingestion using emergency gastrointestinal endoscopy.An 83-year-old female was admitted to the emergency department with altered mental state and abdominal ...
Kyung Ho Kim +6 more
openaire +3 more sources
Portland cement structure and its major oxides and fineness
, 2018Predicting the compressive strength of concrete has been considered as the initial phase across the cement production processing. The current study has focused on the integration of the concrete compressive strength in 28 days with the mix of the major ...
A. Nosrati +10 more
semanticscholar +1 more source
The hydration of Portland Cement
Nature, 1976ALTHOUGH extensive X-ray data have been recorded, until relatively recently1 the microstructural changes which attend the hydration of Portland Cement have received scant attention. We here report electron transmission observations of the reaction and draw attention to analogous silicate models which suggest a probable mechanism.
A. Hellawell, D. D. Double
openaire +2 more sources
Recycled concrete and brick powders as supplements to Portland cement for more sustainable concrete
Journal of Cleaner Production, 2022Lauren Likes +5 more
semanticscholar +1 more source
Calcium chloride acceleration in ordinary Portland cement
Magazine of Concrete Research, 2018Early-age hydration of ordinary Portland cement is now acknowledged to originate from nucleation and crystal growth of calcium–silicate–hydrates.
T. Vehmas, A. Kronlöf, A. Ćwirzeń
semanticscholar +1 more source
2016
Portland cement is at the same time the fruit of simple technology and a complex science. It consist in firing at 1450 °C very simple pulverized raw materials having a very specific composition to produce an intermediate product called Portland cement clinker or simply clinker.
openaire +2 more sources
Portland cement is at the same time the fruit of simple technology and a complex science. It consist in firing at 1450 °C very simple pulverized raw materials having a very specific composition to produce an intermediate product called Portland cement clinker or simply clinker.
openaire +2 more sources
On the hydration of Portland cement
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1978When Portland cement is contacted with water, calcium ion is rapidly leached from the solid to form calcium hydroxide solution but only traces of silica are found in the aqueous phase. It is proposed that the hydrated, calcium-depleted surface of grains consists of low molecular mass silicic acids and that these interact with dissolved ...
J. E. Bailey +2 more
openaire +2 more sources