B.V.Gusev, the member correspondent of the Russian
Academy of Sciences, the dr. techn. sciences, the professor, the manage of chair of
building materials and technologies of the Moscow state university of
means communication
V.T.Yerofeev, member correspondent RAABS, the Dr.
techn. sciences, the professor, the manager of chair of building materials and
technologies, the dean of architecturall-building faculty of
the Mordovian state university, the Russian Federation
A.V.Dergunova, a cand. tech. sciences, the reader of chair of economy and management
in building of the Mordovian state
university, the Russian Federation
A.D.Bogatov, a cand. tech. sci., the reader of chair
of building materials and technologies of the Mordovian state university
Increase of biofirmness of building materials by means
of introduction in their structure modified stuffes
Increase
of biofirmness of building materials is reached by introduction in their
structure fungiside additives. Biocide preparations can be entered into structure
of composite materials during manufacturing, by impregnation of finished
articles. As the action directed on improvement of technological and operational
characteristics of concrete, promoting increase of their biofirmness, modifying of a surface of fillers can be used. For the purpose of increase of biofirmness of
concrete we had been carried out researches on giving of
fungicide surfaces quartz contained fillers as core on weight of a component of concrete. Quartz sand was applied two fractions – 0,16-0,315 mm and
0,315-0,63 mm. In quality of fungicide connections considered: potassium
permanganate, phenol, copper vitriol. Modifying of a surface of quartz sand was carried out in the
beginning by its mixing with the water solutions containing fungicide
connections and the subsequent evaporation of such solution and drying of sand. At last stage on a sand
surface the film of a
certain thickness was formed.
Photos of
stuffes, processed of fungicide at
increase in 1000 times are resulted by connections on fig. 1.
Fig. of 1 Photo of
sttufes, processed by fungicide connections by potassium permanganate, phenol, copper vitriol at increase in 1000 times.
Structures
for tests were made equimoved. The quantitative maintenance of a small filler
and fungicide additives in the structures, accepted on 100 ìàñ.÷. Cement it is
resulted in tab. 1.
Table 1
Structures of cement
compositions
|
¹ structure |
The maintenance of
components in structures, ìàññ.÷. |
||||
|
Filler |
Ôóíãèöèäíûå additives |
||||
|
Sand largevity
0,315-0,63 mm |
Sand largevity 0,16-0,315 mm |
potassium
permanganate |
Copper vitriol |
Phenol |
|
|
1 |
300 |
|
|
|
|
|
2 |
|
300 |
|
|
|
|
3 |
300 |
|
0,5 |
|
|
|
4 |
300 |
|
1 |
|
|
|
5 |
300 |
|
2,5 |
|
|
|
6 |
300 |
|
5 |
|
|
|
7 |
|
300 |
0,5 |
|
|
|
8 |
|
300 |
1 |
|
|
|
9 |
|
300 |
2,5 |
|
|
|
10 |
|
300 |
5 |
|
|
|
11 |
300 |
|
|
2 |
|
|
12 |
300 |
|
|
4 |
|
Table 1 continuation
|
13 |
300 |
|
|
8 |
|
|
14 |
|
300 |
|
2 |
|
|
15 |
|
300 |
|
4 |
|
|
16 |
|
300 |
|
8 |
|
|
17 |
300 |
|
|
|
0,5 |
|
18 |
300 |
|
|
|
1 |
|
19 |
300 |
|
|
|
2,5 |
|
20 |
300 |
|
|
|
5 |
|
21 |
|
300 |
|
|
0,5 |
|
22 |
|
300 |
|
|
1 |
|
23 |
|
300 |
|
|
2,5 |
|
24 |
|
300 |
|
|
5 |
Results of test of biofirmness of
materials are resulted in tab. 2.
Table 2
Bilding
up of composites in the conditions of influence miceliale funguses
|
¹ Structure |
Stability
to action of mushrooms, point |
The characteristic in accordance with GOST |
|
|
Method 1 |
Method 3 |
||
|
1 |
2 |
3 |
4 |
|
1 |
1 |
4 |
fungus stable |
|
2 |
2 |
5 |
fungus stable |
|
3 |
3 |
4 |
un fungus stable |
|
4 |
3 |
4 |
un fungus stable |
|
5 |
2 |
3 |
fungus stable |
|
6 |
1 |
2 |
fungus stable |
|
7 |
3 |
5 |
un fungus stable |
|
8 |
3 |
4 |
un fungus stable |
|
9 |
2 |
3 |
fungus stable |
|
10 |
2 |
2 |
fungus stable |
|
11 |
1 |
5 |
fungus stable |
|
12 |
1 |
4 |
fungus stable |
|
13 |
1 |
3 |
fungus stable |
|
14 |
3 |
5 |
un fungus stable |
Table
2 continuation
|
15 |
2 |
4 |
fungus stable |
|
16 |
1 |
3 |
fungus stable |
|
17 |
0 |
4 |
fungus stable |
|
18 |
0 |
R 8,5mm |
fungicide |
|
19 |
0 |
R 9mm |
fungicide |
|
20 |
0 |
R 10mm |
fungicide |
|
21 |
0 |
3 |
fungicide |
|
22 |
0 |
R 12,5mm |
fungicide |
|
23 |
0 |
R 12,5mm |
fungicide |
|
24 |
0 |
R 12,5mm |
fungicide |
Analyzing
the received results, it is possible to consider conclusions that modifying of a surface of
quartz sand by potassium permanganate and copper vitriol in number of 2,5 and 5
mass parts gives to samples fungus stable properties, and phenol – fungicide.
Thus, the spent experiences confirm possibilities of increase of biofirmness of
cement composites by introduction in
their structures modified fungicide with connections of fillers.