About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Morozov N.M. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Muginov H.G. – researcher E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Khozin V.G. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Antakov A.B. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1 |
| Title of the article | Sandy concretes of high strength for monolithic construction |
| Abstract. | Sandy concrete in recent times is increasingly being used in the general availability of raw material base, while the costs for transportation of high-quality crushed stone for high-strength concrete with every year more and more increasing. In sandy concretes on mobile mixtures plays an important role fractional composition of the core. So, when optimizing the grain of sand and use of efficient plasticizing additives, the strength of sandy concrete by more than 50 %. It is also necessary to take into account the increased the involvement of air in the sand of concrete, to reduce which, it is necessary to select effective thinners. The most effective way of modification of sandy concrete is the joint application of superplasticizers on the basis of polycarboxylate and mineral fillers. It allowed to increase the compressive strength of sandy concrete up to 80-90 MPa, prism strength up to 69 to 70 MPa and Flexural strength to 9,3 MPa. The use of high-strength sandy concrete in reinforced concrete columns allows the reduction of the cross-section columns up to 300х300 mm reduce the consumption of concrete by 44 %, and consumption of steel on 11 %. At constant cross-section columns (400х400 mm), but with the use of high-strength concrete consumption were reduced by 48 %. |
| Keywords. | Sandy concrete, high-strength, superplasticizer, mineral fillers. |
| For citations: | Morozov N.M., Muginov H.G., Khozin V.G., Antakov A.B. Sandy concretes of high strength for monolithic construction // Izvestiya KGASU. 2012. №2(20) P.183-188. |
