Polymers not only possess repairing functions concerning the concrete structures, but also due to their properties are used in making different types of polymer cements and improving the matrix structure of cement materials, enhancing the viscosity, mechanical, and stability power of concretes. Today, there is limited knowledge on the use of SBR in structural light aggregate concrete. In the pr...

Micro silica (MS) is an extremely fine, spherical powder that is used as an additive for improving concrete performance. It is obtained as a by product of silicon metal and ferrosilicon alloy production.  Due to its pozzolanic nature, micro silica can be used to enhance the qualities of both  fresh  and  hardened  concrete. Addition of micro silica into the concrete as a cement rep...

The aim of this research was to produce a convenient additive for enhancing the properties, especially the fluid loss, of oil well cement slurries. In this regard, a variety of drilling/cementing chemical additives known as fluid loss controllers were prepared through derivatization and chemical modification of lignite. Lignite-based graft copolymers were synthesized using different groups of a...

Cementitious materials are an excellent example of a composite material with complex hierarchical features and random features that range from nanometer (nm) to millimeter (mm) scale. Multi-scale modeling of complex material systems requires starting from fundamental building blocks to capture the scale relevant features through associated computational models. In this paper, molecular dynamics...

This paper presents the results of studying properties cement-based composites modified with a complex additive based on chrysotile nanofibers and carbon black. The optimal composition was stated due to particle size analysis suspensions different black ratios mechanical study fine-grained concrete additive. It found that addition in amount 0.05% cement mass together 0.01% leads 31.9% compressi...

Cement production worldwide contributes at least a 9% increase in CO2 emissions. Industrial or agricultural waste can cause serious problems for the environment. One of wastes that be used as SCM from is sugar cane. This research was conducted to determine content chemical elements contained bagasse ash which suspected have similarities with cement. study uses an experimental method, type pre-e...

In addition to the positive effect of introduction a superplasticizer, there are also negative ones: an increase in period structure formation, significant air entrainment and, as result, decrease strength. One ways reduce impact on and properties concrete composites is method preparing suspension, which consists first dissolving 10% amount cement all mixing water mixer for 1-2 minutes. Then lo...