SU867898A1 - Method of producing concrete mix - Google Patents

Description

(54) METHOD FOR PREPARING A CONCRETE MIXTURE

The invention relates to the building materials industry and can be used in the preparation of concrete mixtures based on mineral binder and composite binder. Known methods of cooking be-. a ton of mineral based mixture using artificial filler by mixing them - C. A disadvantage of the known methods is the complex technology of making large, filler and high requirements; the raw materials for making large mixture are made .. There is also a method of preparing a large mixture that includes mixing cement binder, sand, and artificial aggregate in the form of poly. ethylene bags up to 2 mm in size, filled with fine-grained yate | ial, whose quality and fineness are not limited to any requirements. 23 The disadvantage of the known method of preparing a concrete mix is relatively low strength up to 3.5 MPa, which renders the known concrete a mixture for laying the developed space. The purpose of the invention is to increase the strength. This goal is achieved by the fact that the method of preparing a concrete mix, which includes mixing bonding sand and artificial aggregate in the form of filled capsules of 20O mm in size, is carried out by filling the capsules with cement mortar with a 1: 5 ratio of cement and sand and water-cement ratio of 0, 46 - 0.97 or nojraMepHbiM binders with filler in the ratio of 1: 3-1: 4. Example. For the manufacture of a coarse aggregate with a shape close to cubic with rounded edges, the smallest and largest sizes, respectively, 12 and 2 mm, the binder and quartz sand are pre-mixed, the resulting mixture is placed in an elastic

38678984

shell and packagings used by large coarse aggregate and their ratio

the components for the manufacture of artificially are given in table. one.

The sands are small, dusty,. expanded clay, shungizite and other bulk materials

Portland cement

Sand: cement 4: 1

M 4OO, water: Yemeng 0.97

Portland Cement M 400,

Sand: cement 4: 1 water: cement 0.47

Portland cement M 40O,

Sand: cement 5.1 water: cement Oh, 4 7

Sand: Live 4: 1

Polief fna blend

PN-15 40%. cobalt naphthenate 3.2% hyperia 1.6% marshallite 55.2%

Artificial coarse aggregate in the shell is immediately introduced into the mixture of binder and sand, mixed, and the prepared concrete mixture is placed into molds 4x4x16 cm in size, compacted by vibrating with weights and, after holding,

Known composition

Portland cement water: cement 2.8

eleven

The proposed composition

Poly irna resin t-15 4O% cobalt nafgenate 3.2% hyperise 1.6% marshalite 55.2%

Table 1

Polyethylene

Fabric article 72110H / O

Polyethylene

Fabric article 72110 N / 0

Fabric article 72 110 N / 0

one day the forms are decomposed, subjected to heat treatment, after which the strength of concrete is determined. The ratio of the components in the concrete mix, with artificial coarse aggregate and the strength of concrete known and proposed compositions are given in table. 2

table 2

OK, 3.5

38: 62

wet

hardening

80 ° C, 8h28,6

3:97

measures 42%

Benefitspot 1.3%

quartz micronalnitel 56.7% -.

Portland cement: water: PVA emulsion 1: 0.4:

0.35 .1: 2

Portland Cement M 40O

water: cement, 431: 2.5 From the data table. 2, there is a significant increase (up to 7OO%) of the strength properties of concrete as compared with the known one, which makes it possible to use the invention for making concrete for structures that do not have load bearing capacity. / Formulas, and the invention. in the form of filled capsules with a size of 2OO mm, characterized in that, with the help of Continued Table D

 8 h

2: 98.

24, O

air dry conditions

: 96 28 days

12.5: 87.5, 8 h

20.5 Pouring the increase in fluorescence, the capsules are filled with cement mortar with a cement: sand ratio of 1: 4-1: 5 and a water-cement ratio of 0.46-0.97 or a polymer binder with filler in the ratio 1: 1: 3-1 :four. Sources of information taken into account in the examination 1.Ge1Sh1berg OA A. Concrete and reinforced concrete products technologists, M., stroiizdat, 1965, p. 94-110. 2. USSR author's certificate No. 558Oi5, Yu1. С О4 В 19 / 6о, 10.О2.75.

Claims (1)

Claim A method of preparing a concrete mixture, comprising mixing a binder peak and artificial aggregate in the form of filled capsules of size 200 mm, characterized in that, in order to increase strength, the capsules are filled with cement mortar with a cement to sand ratio of 1: 4 - 1: 5 and a water-cement ratio 0.46 - 0.97 or a polymer binder with a filler in a ratio of 1: 3 - 1: 4.