Simulation of open circuit clinker grinding

Benzer, Hakan; Ergun, Levent; Öner, Muammer; Lynch, A. J.

doi:10.1016/s0892-6875(01)00066-8

Cited by 38 publications

(14 citation statements)

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“…• Portlandite -Ca(OH) 2 water and at 3641-3642 cm −1 , due to OH stretching mode of Portlandite, which seems to be relatively larger in case of UF-II cement, after 28 days of hardening.…”

Section: Hydration Products Analysis By Fourier Transform Infra Red Smentioning

confidence: 98%

“…Ultrafine grinding is an energy-intensive stage in the overall of the process, which provides materials in the proper fine size range for the required properties of final product 1,2 . The quality of cement is measured by the specific surface area (Blaine index).…”

Section: Introductionmentioning

confidence: 99%

“…The increased rate of strength gain is usually achieved by a higher alite content (C 3 S higher than 55%, sometimes up to 70%) and by a finer grinding of the cement clinker 7,8 . On average, high early strength cements have Blaine specific surface area of 4500 to 6000 cm 2 .g -1 . The higher fineness significantly increases the strength at 10 to 24 hours, with the increase persisting up to 28 days.…”

Section: Introductionmentioning

confidence: 99%

“…Skvara et al studied the relationship between the particle size distribution of a special type of high early strength cement and its strength development characteristics 11 . The same clinker was ground in a laboratory ball mill to various levels of specific surface area to produce cements having Blaine values ranging between 4200 and 10000 cm 2 .g -1 . The strength gain after one day of curing appeared to be a direct function of the specific surface area of the cement.…”

Section: Introductionmentioning

confidence: 99%

“…The strength gain after one day of curing appeared to be a direct function of the specific surface area of the cement. At 1 day, the ultrafine mixes were quite porous and consisted of near spherical, extremely fine unhydrated and nominally hydrated cement particles, with Ca(OH) 2 being extremely rare in the paste. By 7 days the paste acquired some degree of denseness, cement particles began to hydrate, and Ca(OH) 2 appeared in the paste.…”

Section: Introductionmentioning

confidence: 99%

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Dry-grinded ultrafine cements hydration. physicochemical and microstructural characterization

et al. 2013

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The aim of the present research work was the evaluation of the physicochemical and microstructural properties of two ultrafine cements, produced by dry grinding of a commercial CEM I 42.5N cement. The effect of grinding on particle size distribution was determined by laser scattering analyzer. All cements were tested for initial and final setting times, consistency of standard paste, soundness, flow of normal mortar and compressive strengths after 1, 2, 7 and 28 days. The effect of the fineness on the heat of hydration was also investigated. The hydration products were determined by X-ray diffraction analysis and by Fourier transform infrared spectroscopy, at 1, 2, 7 and 28 days. The microstructure of the hardened cement pastes and their morphological characteristics were examined by scanning electron microscopy. Porosity and pore size distribution were evaluated by mercury intrusion porosimetry. The effects of greater fineness on compressive strengths were evident principally at early ages. After the first 24 hours of hydration, the compressive strength of the finest cements was about 3 times higher (over 48 MPa) than the corresponding of CEM I 42.5N (15.1 MPa).

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Section: Hydration Products Analysis By Fourier Transform Infra Red Smentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%