Three technical solutions by VAKOMA GmbH, relating to the restoration and replacement of mill drives with A2800 gears in the factories of post-Soviet countries are described. Each solution is individual and provides for an extensive refurbishment of the existing equipme...
The paper analyzes the factors that determine the effectiveness of impact modifiers - elasticizer additives introduced into the basic refractory materials for lining high-temperature zones of cement rotary kilns. These include, above all, the differences in temperature ...
In this article results of several investigations helping to assess the effect of different calcined clay blended cements on extremely stressed concretes are shown.
Two ordinary Portland cements mainly differing in their alkali content and three different clays contain...
The effect of softwood based calcium- and sodium lignosulfonates on the early hydration of pastes of cubic and orthorhombic C3A with gypsum was investigated using isothermal calorimetry, XRD analysis and thermogravimetry. For XRD paste hydration was stopped with liquid ...
In this paper, hydration of ternary and binary blended cements containing Portland cement, ground granulated blast-furnace slag and limestone powder has been investigated. The results show that the hydration of calcium silicate phases of cement in pastes was enhanced by...
The results of examination are reported of the effect of borate salt solutions used to simulate liquid radioactive waste of nuclear power plants with water-cooled reactors on the setting time, compressive strength, hydration temperature and products of slag lime binders...
In H1, 2016 4,102.6 kt of cement and 2,945.7 kt of clinker were produced, or, respectively 10.2% and 18.9% more than in H1, 2015. About 139 kt of cement were exported in H1, 2016. The main importers were Moldova, Belarus, Romania and Hungary. About 19 kt of ceme...
Alkali silica reaction, ASR is still a durability problem in Japan although countermeasures have been established since 1986. The problems of this Japanese situation are thought to be caused by lack of verification of the effectiveness of the adopted countermeasures. In...
The purpose of this work was to develop a composition for non-autoclaved aerated concrete reinforced with powdered basalt waste (PBW) and fibrous basalt waste (FBW). PBW in the form of powder with a specific surface area of 346 m2/kg, true density of 218...
On May 15-19, 2016 in Dallas, Texas, under the auspices of IEEE-IAS PCA 58th International Technical Conference on cement was held. The conference was attended by more than 970 participants from 26 countries. An overview of the papers presented at the conference is prov...
