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Cement type and properties of self-compacting concrete

100%

Grabiec A., Chutek R.

Acta Scientiarum Polonorum. Architectura

2008

tom 07

nr 4

Self-compacting concrete (SCC) is undoubtedly a promising ecological cement matrix composite of new generation. However, it is not easy to achieve the required combination of properties in fresh SCC mixes. SCC is also particularly sensitive to any changes in the laboratory and at the job site. Choice of constituents for SCC, especially cement and superplasticiser which are able to collaborate in the correct way, has a significant effect on SCC performance. In this investigation considered in qualitative way, four cements, varying in physical and chemical properties and phase composition were used to check their compatibility with a new generation superplasticiser, taking into account the properties of fresh and hardened self-compacting concretes. Results revealed some differences although it is impossible to answer definitely which cement performs with the superplasticiser in the best way.

Assessment of selected features of three types of road concrete depending on the applied cement

67%

Jedrych A., Kempinski J., Kilian W.

Acta Scientiarum Polonorum. Formatio Circumiectus

2018

tom 17

nr 1

The paper presents a study on the effects of different types of cement on selected properties of C30/37 road concrete. It involved three types of cement: Portland CEM I 42,5 R cement, Portland slag CEM II/B-S 32,5 R cement and CEM III/A 42,5 N LH/HSR/NA blast cement. The composition of the concrete mixtures were designed and evaluated experimentally. Test samples were prepared in laboratory conditions. The maturation period took 28 days for concrete with CEM I 42,5 R and CEM II/B-S 32,5 R, and 56 days for CEM III/A 42,5 N LH/HSR/NA cement. After maturation the samples were tested for: compressive strength, bending tensile strength and splitting tensile strength, water absorption and frost resistance. It was found that each of the concrete meets the requirements for road concrete listed in the GDDKiA technical specification [Ogólna Specyfikacja Techniczna… 2014]. In most of the tests the CEM III/A 42,5 N LH/HSR/NA cement performed best.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Architectura

1 Acta Scientiarum Polonorum. Formatio Circumiectus

1 Chutek R.

1 Grabiec A.

1 Jedrych A.

1 Kempinski J.

1 Kilian W.

1 2018

1 2008

Wyniki wyszukiwania

Cement type and properties of self-compacting concrete

Assessment of selected features of three types of road concrete depending on the applied cement