Ways to reduce shrinkage of high strength concrete

The laboratory investigation on the autogenous and total shrinkage of high strength concrete, and the ways of its reduction, are presented. Such concretes demonstrate significant autogenous shrinkage, which should, however, be limited in the early stages of its developm...

Ukrainian cement industry: operation results in nine months of 2016

In nine months of 2016 7,007 kt of cement and 4,838 kt of clinker were produced, or, respectively 7.8 % and 14.6 % more than in the same period for 2015. In September 2016 there were produced 2.8 % of cement and 1.0 % of clinker more than in September 20...

General principles for the development of variously configured equipment for production of building materials

This article describes an approach to multipleoption designing of process equipment for Portland cement production lines, with a case study of ball mills. Modern software makes it possible to create digital mock-ups of items and combine different components of units to ...

Effect of additives of ground slag on the early strength and hydration of slag Portland cement

The effect of additives obtained by grinding granulated slag on hydration and early compressive strength of slag Portland cement was examined. Grinding of granulated blast furnace slag with addition of sodium aluminate accelerated hydration of Portland cement component ...

Low-carbon cements in Brazil: the use of metakaolin as SCM

The use of Portland cement in the world has grown exponentially in recent years. There is a relationship between this material and the economic and social development, especially in development countries. The predictions are that consumption will be 40 billion tons per ...

Carbonation of Portlandite in low humidity environments

Computer study of Portlandite carbonization reaction was made using density functional theory (DFT). Also an experimental investigation of Portlandite carbonization was performed at low relative humidity (40%). Two cycles of a change of regime from c...

Cemtech Europe 2016

The article presents a review of the presentations made at Cemtech Conference held in Madrid, Spain, on September 18—21, 2016.

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