Cement for production of concrete with special properties

Cement without additives, CEM I 52,5 R, is obtained through the process of grinding of high quality portland-cement clinker with the  optimum amount of gypsum addition. CRH Serbia recommends this type of cement for production of prestressed constructions and concrete elements.

All properties of fresh and hardened concrete are in conformity with approprriate standards and have been confirmed through practice.

Type

  • PC 52,5 R
  • CEM I 52,5 R

Cement quality Codes and Standards

Cement  CEM I 52,5 R – properties

  • High early strengths
  • Excellent final strengths
  • Compatible with chemical additives
  • Enables faster construction, with reduced production costs
  • Enables efficient usage of chemical additives, resulting in enhanced properties of fresh and hardened concrete (reduced water quantity, better fluidity, frost and salt resistance, etc.)
  • Good plasticity and workability of  fresh concrete
  • Uniform quality
  • Optimum specific surface area
  • Optimum fineness of grind
  • Uniform light colour

Application of cement type CEM I 52,5 R

  • Production of superplasticized high strength concrete HPC under preassure (High Performance Concrete) > 70MPa
  • Production of prestressed constructions and concrete components. Production of concrete components requiring fast dismantling i.e. fast stripping of forms
  • Production of concrete precasts, i.e. concrete poles, kerbs, railway sleepers, roof construction beams, beams for halls and crane paths, etc.
  • Production of concrete slabs for landscaping
  • Production of lightweight concrete, also known as cellular or porous concrete; aerated concrete and foam concrete
  • Production of various products made of concrete

Application of concrete made with CEM I 52,5 R

CRH Serbia had conducted  testing of concrete made with cement type CEM I 52,5 R. On the basis of the testing results of concrete made with cement type CEM I 52,5 R, we have come to the following conclusions:

  • Projected and tested concrete mixtures have good plasticity and workability;
  • In regard to compressive strength, they satisfy requirements typical for specific projected brand and concrete type;
  • Resistance of hardened concrete made with portland cement type CEM I 52,5 R to frost and salts can be achieved through aeration of  concrete by adding to the mix  an optimum quantity of air entrainers  in order to create/ sufficient number of air pores;
  • Compressive strengths of less than 45 MPa, with good workability, can be achieved with portland cement type CEM I 52,5 R even without chemical additives;
  • Compressive strengths of more than 45 MPa, with good workability, can be achieved with portland cement CEM I 52,5 R by introduction of additives such as plasticizers and superplasticizers;
  • HPC (High Performance Concrete) with portland cement CEM I 52,5 R, with comprehensive strenght  of more than 70 MPa and good workability, can be obtained through a proper selection of  high-quality aggregates with the combination of natural and crushed eruptive stone and application of superplasticizer additives.

Technical assistance

For further information or assistance regarding the usage of our products, feel free to contact us at 0800 325 425

CONTACT

Sales Department

Belgrade and Vojvodina: +381 35 572 220
Central Serbia: +381 35 572 380
Southern Serbia: +381 35 572 377

Email: ivana.radovanovic@rs.crh.com