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Comparing the compressive strenghths of concrete made with river sand and quarry dust as fine aggregates

100%

Chiemela C., Igwegbe W., Ibearugbulem O., Okoye P., Oke M.

International Letters of Natural Sciences

2014

tom 15

nr 2

Nowadays development of infrastructures is becoming number one priority in the world, particularly in the developing countries. So there are great demands within the construction industries for river sand as fine aggregate used in the production of concrete. This has created a very difficult situation; the cost of river sand has increased and also there is great fear from environmentalist and ecologist that in the future there may be scarcity of river sand and the environment and the ecology will be distorted. Hence, the need to find materials which are affordable and available to partially or totally replaced river sand in the production of concrete. This work is focused on the use of quarry dust as a total replacement to river sand in the production of concrete, and comparing the results (compressive strength) to that obtained from conversional concrete made with river sand.

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

80%

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. Formatio Circumiectus

1 International Letters of Natural Sciences

1 Chiemela C.

1 Ibearugbulem O.

1 Igwegbe W.

1 Jedrych A.

1 Kempinski J.

1 Kilian W.

1 Oke M.

1 Okoye P.

1 2018

1 2014

Wyniki wyszukiwania

Comparing the compressive strenghths of concrete made with river sand and quarry dust as fine aggregates

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