Title:
The Influence of Mixed Cement Filler Dispersity to the Concrete Properties
Author(s):
Olga Kononova
Publication:
Symposium Paper
Volume:
326
Issue:
Appears on pages(s):
122.1-122.6
Keywords:
expanded clay concrete, mixed cement, specific surface, quartz filler, compressive and bending strength, durability
DOI:
10.14359/51711105
Date:
8/10/2018
Abstract:
The composition of the expanded clay concrete mortar, prepared using mixed cement, was studied. Mixed cement was obtained by separate grinding of quartz sand to a specific surface of 100 and 500 m2/kg and Portland cement with specific surface of 400 m2/kg. It is established that, the fine-dispersed filler, in comparison with the coarse-dispersed filler, increases the strength of the samples to some extent. The samples test showed a slight advantage in strength (on average not exceeding 10 %) from the use of a fine filler with a specific surface area of 500 m2/kg in comparison with similar compositions containing a coarse dispersed filler with a specific surface of 100 m2/kg in concrete with a mixed cement content of 600 kg/m3. In compositions with a flow rate of mixed cement 200 kg/m3, the effect of the filler dispersity increasing to the strength growth is more significant and reaches of 20 to 30 % due the concrete mortar part structure compaction. But at the same time low-strength compositions with a compressive strength less than 10 MPa, the durability of which is not guaranteed, are formed.
Related References:
1. Malinina, L.A., Batrakov, V.G., “Concrete studies: the present and the future,” Concrete and reinforced concrete, 2003, No. 1, P.2-6.
2. Herdtl, R., Dietermann, M., Schmidt, K., “Durability of concretes based on multicomponent cements,” Cement and its application, 2011, No. 1, P.76-80.
3. Venue, M., “Cement and concrete in construction,” M.: Stroiizdat, 1980, 415 p.
4. Obedkov, A.E, Glagoleva, A.M., Solomatov, V.I., “Status and prospects for the introduction of an effective separate technology for the preparation of cement concrete with activated filler,” Construction and architecture of Uzbekistan, 1985, No. 5, P.3.
5. Sheikin, A.E., Chekhovsky, Yu. V., Brusser M.I., “Structure and properties of cement concretes,” Moscow: Stroiizdat, 1979, 334 p.
6. Kononova, O.V., “Expanded-clay concrete with quartz filler,” International journal of experimental education, 2014, No. 4, P.51-54.
7. Dobshits, L.M., Kononova, O.V., “Cement stone with different dispersity of cement and filler properties” Cement and its application, ? 2, 2013, P.124-128.