SU378378A1 - PLASTIC CONCRETE MIXTURE - Google Patents

Description

one

The invention relates to the field of building materials, namely to plasto-concrete mixtures.

A known plasto-concrete mixture based on alkylresorcinol resin.

The proposed plasto-concrete mixture based on alkyl-resorption resin is improved by introducing epoxy-diano resin into its composition.

Due to the high reactivity of the alkylresorcin resin, the curing of the enoxide resin in the binder occurs without special hardeners and without heating.

Plastobetons manufactured on the basis of a mixture of alkyl-resistive and epoxy-dianic acid, compared to plastobetons based on the known alkyl-resorcinol binders, are characterized by improved strength, greater resistance to environmental effects (moisture, rapid temperature changes, organic solvents, acids, alkalis), improved physical properties. mechanical indicators (strength on

cut, bend, compressive and modulus of elasticity).

Example. Plasto concrete with improved strength indicators is obtained by displacing the following components in the specified sequence and quantities, weight. including: alkylresorcin resin 100, epoxy resin Dianova resin 1-100; Formalin 37% (or paraform in the appropriate conversion

on the content of formaldehyde) 10-30; alkaline catalyst (cement, 10% solution of NaOH, KOH, etc.) 0.5-15, depending on the required curing time; nanofiller - crushed stone or gravel 50-1000.

Plasto concrete cures within 2-40 hours (depending on the amount of catalyst). Due to the high activity of the alkyl-cationic resin, hardening above the epoxy resin occurs without a special hardener and without heating.

In tab. 1 shows the data of physico-mechanical tests of plastobetons based on alkyl-cutting resin, epoxy resin and a mixture of these resins.

Table 1

Note to the table. 1 Composition of plastobetons (№ 1-5), weight.

1. Alkylresorcinova resin DFC-4

2. Formalin 36,

3. Catalyst cement

4. Granite aggregate aggregate

5. Epoxy resin ED-5 respectively

In tab. Table 2 shows the adhesion necrosis (for shear) of plastobetonosis based on the proposed binder with a concrete base.

table 2

Note to the table. 2

The compositions of plastobet given

in the notes to the table. one.

The composition of plastobeton number 6, weight. h

1. ED-5 epoxy resin

2.Polyethylenepolyamrn

3. Granite aggregate aggregate

Subject and s about b ip e t-e "and

Claims (2)

1. A plasto-concrete mixture containing alkylresorcin resin, formaldehyde, alkaline catalyst and mineral filler, characterized in that, in order to improve the physicomechanical properties, epoxy resin is introduced into its composition in the following ratio of components, weight. including: alkylresorcin resin epoxy resin dianova formaldehyde alkaline catalyst mineral filler 2. Plastobetonpa mixture according to claim 1, characterized in that formaldehyde is applied in the form of its aqueous solution or paraform.