SU1724630A1 - Concrete mixture - Google Patents

Abstract

The invention relates to the field of building materials, in particular, to the compositions of concrete mixtures used for the manufacture of elements and structures of hydraulic structures. The purpose of the invention is to protect concrete hydraulic structures from biofouling and reduce water absorption. Concrete mixture includes, wt%: Portland cement 12.5-26.6; placeholder 55.8-71.7; piperylene oligomer 0.1-0.3; spent catalyst for the production of isoprene on the basis of alumina with a specific surface of 6000–10000 cm2 / g 5.5–9.9 and water is the rest. The strength of concrete compression specimens is 53.2 MPa; biofourage rate 0.0001 g / m2g; water absorption of concrete 2.3%. 1 tab.

Description

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The invention relates to the field of building materials, in particular, to the compositions of concrete mixtures used for the manufacture of elements and structures of hydraulic structures.

The purpose of the invention is to protect concrete hydraulic structures from biofouling and to reduce water absorption of concrete.

The concrete mixture is prepared according to the following procedure.

First, a complex additive is prepared by mixing in the dispersion water of the mixing with the aqueous emulsion of piperylene oligomer with mol.m., 500-5000 and iodine number 170-210 g 12/100 with the used catalyst for the production of isoprene, wt.%:

SI02 20.85; A120: 59.9; ReaOz 0.64; TiC-2 0.12; Sg20z15; CaO 0.56; MDO 0.40; feO 1.13;

N3200.11; ppt 1.29, within 10-20 minutes, the resulting suspension is introduced into the concrete mix, including Portland M-500, granite crushed stone of fraction 5-10 and sand with a modulus of 2.41.

The physicomechanical properties of concrete samples obtained from the known and proposed mixture are presented in the table.

Claims (1)

Claims of Concrete Mixture, including Portland cement, aggregate, piperylene oligomer and water, characterized in that, in order to protect concrete hydraulic structures from biofouling and reduce water absorption of concrete, it also contains a spent alumina based isoprene catalyst with a 600XI specific surface Yu Ј About CJ about 10,000 cm2 / g in the following ratio components, wt.%: Portland cement 12,5-26,6 Fill 55,8-71,7 Piperylene oligomer 0.1-0.3 Spent catalyst for the production of alumina-based isoprene with a specific surface of 6000-10000 cm2 / g Water