SU1234380A1 - Complex additive for quick-setting fill-up mixture - Google Patents

Description

The invention relates to complex additive compositions for a quick setting filling mixture, which are used in filling mine workings.

The purpose of the invention is to accelerate the hardening and increase the strength of the filling mixture in the early stages of natural hardening, improving its workability and transportation.

Waste production soap contains in its composition sodium chloride (13-15%), alkali (0.3-0.5%), soda ash (1.2-1.5%), fatty acids (0.5-0, eight%).

Waste. Production of dry synthetic detergents contains surfactants (14-17%).

All components of the complex supplement dissolve well in room temperature water. The additive is introduced into the filling mixture together with the mixing water.

The waste production of soap-producing complex with calcium chloride accelerates the setting time and hardening of the filling mass due to the appearance of synergy, i.e. the presence of sodium chloride enhances the effect given by calcium chloride (the number of crystal-formation centers increases). The presence of alkali and fatty acids increases the plasticity and workability of the mixture, which reduces (Costs during its preparation and transportation.

Waste from the production of dry synthetic detergents has a micro foaming effect, thereby activating the effect of calcium chloride and components of soap-making. Adsorbing cement clinker grains, it reduces the surface tension and friction between them and in the process of mixing and hydration increases their specific surface, i.e. contributes to an increase in the contact area of the fluid with the liquid component - an increase in the centrifugal value. In this way, the process of setting and the intensity of the mixture is accelerated.

In addition, waste production of dry synthetic detergents

in combination with the waste of soap production, it contributes to the formation of a fine-crystalline structure of the filling mass, which ensures uniformity (stability) of its strength in compression.

Thus, the introduction of a complex additive consisting of accelerators of hardening and plasticizing and air-covering components to the composition of hard-hardening tabs can be obtained in the early periods of natural hardening at a relatively low temperature (10-12 ° C) high strength, reducing cement consumption.

0 Having a plasticizing effect, a complex additive helps to reduce the water-cement ratio - the most important criterion for increasing compressive strength in the early stages,

5 left a filling mixture of a given ductility - easily processed and transported through the pipeline. Pre-additive is mixed with mixing water.

0. Liquid complex additive is introduced into the filling mixture in the amount of 3-8% by weight of cement, calculated on the dry matter of the additive.

Example. Complex additive

5 containing calcium chloride, waste soap, waste production of dry detergents, water, is introduced into the filling mixture of 1: 4 with, -44. Prepare five

0 compositions of filling mixture with complex additive and the same consumption of cement and aggregate.

The compositions of the proposed supplements are given in.tab. one.

j Dosing is done fine

the aggregate, cement, coarse aggregate, carry out the mixing of the dry components, then the complex additive previously mixed with the gate water is added. The mixture is thoroughly stirred for 3 minutes until a homogeneous mass is obtained.

12343804

Table 1

Components Content of components, wt.%, In the compositions

1 "2 I M Prototir Calcium Chloride 4,737 7,105 11,842 16,579} 8,948 18,947 Soap production waste 3,001 3,701 7,402 11,102 14,802

Production waste

dry synthetic detergents 0,010 0,012 0,024 0,036 0,048

Sodium chloride - - - - - 18,947 Water 92.252 89.182 80.732 72.283. 66,202 62,106

 The backfill mixture and samples of varying V / C, and, consequently, transusable compositions have properties, porting it through the pipeline is completely given in table. 2. Provided.

- From the data table. 2 it follows that: Stock-filling mixture with a complex proposed complex additive for 25 Additive in the early stages of hardening

quick-hardening laying -fabotan-has great strength when compressed space allows you to increase the tit, significantly reduces the time

workability of the mixture in un-grasping.

Table 2

Indicator Composition

12345Prototype

Workability

on the draft of the cone, cm

Start of structure formation, min

Compressive strength, MPa, per day of natural and hardening

one

28

The coefficient of variation in compressive strength,%, per day.

one

28

ten

12

sixteen

22

35

thirty

9,412,3

5,632.1

5.14.2

5.04,1

And, 7 27.9

5.9 5.4

6.1 19.8

6.9 6.4

6.6 25.7

12.7 10.1

Claims (1)

COMPLEX ADDITIVE FOR QUICK HARDENING MORTGAGE MIXTURE, including calcium chloride and water, based on the fact that, in order to accelerate hardening and increase the strength of the filling mixture in the early stages of natural hardening, to improve its workability and transportation , it additionally contains waste from the production of soap and dry synthetic detergents with the following components, May.%: Calcium chloride Soap from soap production Waste from the production of dry synthetic detergents Water ratio 7.105-16.579 3.7-14.802 0.012-0.048 I The rest and ... 1234380 A1