High volume mineral additive for eco-cement

This paper presents a new approach to the production of High Volume Mineral Additive (HVMA) cement. HVMA cement technology is based on the intergrinding of portland cement clinker, gypsum, mineral additives, and a special complex admixture, Supersilica. This new method increases the compressive strength of ordinary cement to 140 MPa and also permits the utilization of a high volume (up to 60%) of inexpensive indigenous mineral additives in the cement. The research results demonstrate that a high volume of natural materials (alumosilicates, limestone, sand, natural pozzolans) and industrial by-products (granulated blast furnace slag, fly ash) and waste (chemical wastes, broken glass and ceramic) can be used as mineral additives in HVMA cement. The maximum quantity of mineral additives in HVMA cement depends on the type of mineral admixtures and its desired strength/durability level. The optimization of the composition of HVMA cement allows the production of a cement with maximal strength and at minimal cost.


Long-term mechanical properties of cellulose fibre-reinforced cement mortar with diatomite
Ince, Ceren; Derogar, Shahram; Ball, Richard James; Ekinci, Abdullah; YÜZER, Nabi (Thomas Telford Ltd., 2019-09-01)
This paper presents a study investigating the long-term mechanical properties of cellulose fibre-reinforced cement mortars incorporating diatomite as a replacement material for quartz sand. Important properties including mass, compressive and flexural strength, sorptivity, water penetration depth and porosity have been rigorously investigated. Significant findings demonstrated that increasing the replacement level of diatomite resulted in a systematic decrease in the final mass of cellulose fibre-reinforced...
Low-temperature chemical synthesis of lanthanum monoaluminate
Taspinar, E; Tas, AC (Wiley, 1997-01-01)
One of the promising candidates for ferroelectric substrate materials, lanthanum monoaluminate (LaAlO3), was successfully synthesized by two separate chemical powder preparation techniques: (i) homogeneous precipitation from aqueous solutions containing urea (CH4N2O) in the presence of nitrate salts, and (ii) self-propagating combustion synthesis from aqueous solutions containing CH4N2O and the respective nitrate salts of lanthanum and aluminum. The submicrometer, spherical-like particles of the precursors ...
A new surface-enhanced Raman scattering substrate based on silver nanoparticles in sol-gel
Volkan, Mürvet; Vo-Dinh, T (Wiley, 1999-12-01)
We report for the first time the development of a new surface-enhanced Raman scattering (SERS)-active silver chloride silica-glass substrate prepared by using in situ precipitation of silver chloride particles in sol-gel films as a precursor for nanoparticles of silver. The controlled precipitation of silver chloride was achieved by the reaction of silver nitrate with trichloroacetic acid, which leads to a slow release of chloride ions. Silver chloride particles were reduced to silver nanoparticles by FeSO4...
Simulation of equal channel angular pressing applied to produce structures with ultrafine-sized grains
Karpuz, Pinar; Şimşir, Caner; Gür, Cemil Hakan (Inderscience Publishers, 2009-01-01)
Severe plastic deformation methods are of great interest in industrial forming applications, as they give rise to significant refinement in microstructures and improvements in mechanical and physical properties. In the 'equal channel angular pressing (ECAP)', which is the most common method for production of ultrafine grained bulk samples, very high plastic strains are introduced into the bulk material without any change in cross section. In this study, the plastic deformation behaviour of the materials sub...
Most effective pre-treatment to nanofiltration for the recovery of print dyeing wastewaters
Capar, Goksen; Yetiş, Ülkü; Yılmaz, Levent (Elsevier BV, 2007-06-25)
This paper presents the determination of the best pre-treatment method to nanofiltration (NF) for the recoverv of print dyeing wastewaters (PDW) of the carpet manufacturing industry. Chemical precipitation (CP) with optimum alum (Al-2 SO4.18H O-2) dose was chosen among five alternatives; 1) Dead-end microfiltration (MF), 2) CP with optimum coagulant dose, 3) CP with low coagulant dose and polyelectrolyte aid, 4) CP with low coagulant dose followed by MF, 5) CP with high coagulant dose followed by ultrafiltr...
Citation Formats
K. Sobolev and M. F. Arıkan, “High volume mineral additive for eco-cement,” AMERICAN CERAMIC SOCIETY BULLETIN, pp. 39–43, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54618.