https://ijmri.de/index.php/jmsi
volume 4, issue 4, 2025
839
THE EFFECT OF SUPERPLASTICIZERS ON THE POROUS STRUCTURE OF FOAM
CONCRETE OBTAINED USING LOCAL INDUSTRIAL WASTE AS A SECONDARY
RESOURCE
U.M. Аbdullаеv
Fеrghаnа Stаtе Tесhniсаl Univеrsity
(
ORCID:0000-0001-6606-5083)
Abstract:
The article presents the results of experimental studies to determine the effect of
superplasticizer SDj-3 based on ester polycarboxylate on the porous structure of foam concrete
obtained from local industrial waste using lime waste as a secondary resource. It is established
that the plasticizer has a significant effect on the porous structure of calcareous foam concrete.
It is noted that the additive SDj-3 makes it possible to increase the proportion of closed pores of
foam concrete while reducing the volume of open pores and, instead of open capillaries, create
a group of evenly distributed small spherical pores, thickening the interporous walls.
Keywords:
foam concrete, calcareous spent foam concrete, pore structure, total porosity, open
porosity, closed porosity, average pore size index, superplasticizer, chemical additive.
Introduction.
In recent years, there has been a growing worldwide interest among
technology scientists and builders in foam concrete based on polished concrete technology [1].
Scientific research works aimed at improving the properties of foam concrete are being carried
out. Currently, a lot of research and development is underway aimed at selecting fillers for the
production of high-quality foam concrete, controlling the formation of structure in a hardening
binder using chemical and mineral additives, optimizing the composition and forming a solid
structure of foam concrete [2-4]. Therefore, it is important to study the physical and technical
properties of foam concrete, to develop a technology for their production, which reduces the
consumption of mineral binders, energy-saving, using local raw materials and secondary
resources.
As is known, the strength of loose concrete depends on the strength of the pore walls and
the overall porosity (density). Suleymanova L. A., Kara K.A. [6-8] and others, it was shown
that the strength of raw concrete is also influenced by the characteristics of the pore structure -
the size of the pores and their statistical size distribution. At the same time, the issues related to
the effect of plasticizing additives on the properties of the porous structure of loose concrete
have not been sufficiently disclosed.
This article describes the results of a study of the superplasticizer sdj-3 based on a
complex polycarboxylate [9] to determine the effect of lime on the pore structure of foam
concrete.
MATERIALS AND METHODS OF RESEARCH.
The research used Portland
cements of the PTS400 D20 brand produced by Kuvasoitsement, which meet the requirements
of GOST 31108-2020.
The porous structure of foam concrete was studied on samples measuring
150x150x150mm, without additives, as well as on samples with chemical additives 0.8; 1.0 and
1.2% SDj-3, hardened for 28 days under normal conditions.
The parameters of the pore structure given in the normative act GOST 12730.4-78 were
the indicators of total porosity (F
um
), open porosity (F
och
), Burke porosity (F
b
), the average pore
https://ijmri.de/index.php/jmsi
volume 4, issue 4, 2025
840
size index (F) and the pore size uniformity index (α).
THE RESULTS AND THEIR DISCUSSION.
The test results and graphs based on
them are shown in Table 1 and Figure 1,2.
Table 1
Parameters of the porous structure of lime-spent foam concrete samples
Parameters
SDj-3 additional amount,%
0
0,8
1,0
1,2
F
um
67,0
69,0
71,1
70,1
F
och
31,1
24,0
20,1
20,2
F
b
35,9
45,
51,0
49,9
F
1,8
1,5
1,2
1,3
α
0,3
0,7
0,9
0,6
Figure 1. Effect of SDj-3 additive on porosity of calcareous foam
concrete
Figure 2. The effect of the SDj-3 additive on the pore size parameters of lime-spent foam
concrete
The curves shown in Fig.1,2 and the data shown in the table indicate that the structure
of the porous structure of lime-spent foam concrete depends on the amount of complex
chemical additives.
The addition of SDj-3 has practically no effect on the overall porosity of lime-spent
foam concrete, but, with an increase in the volume of open pores, it reduces the proportion of
closed pores. Instead of randomly arranged open pores and capillaries, a group of evenly
distributed small spherical pores is formed in concrete, and the interporous walls thicken (Fig.
3).
a)
b)
https://ijmri.de/index.php/jmsi
volume 4, issue 4, 2025
841
c)
d)
Figure 3. Without additives (a) microstructure of lime-spent foam concrete with an SDj-3
content of 0.8% (b), 1.0% (c) and 1.2% (d).
As a result of the modification with the addition of SDj-3, small pores of the same size
are formed in lime-spent foam concrete. According to the results of the research, it was shown
that optimization of the porous structure of lime-spent foam concrete can be achieved by
adding the chemical additive SDj-3 in an amount of 1.0% to the weight of Portland cement,
when this amount of the additive is exceeded, open pores of different sizes are formed.
Conclusion.
An analysis of the research results showed that the superplasticizer SDj-3
based on ester polycarboxylate has a great influence on the formation of the pore structure of
lime-spent foam concrete. The parameters of the porous structure make it possible to obtain
lime-spent foam concrete of specified values, which in turn makes it possible to increase the
strength, frost resistance and energy-saving properties of concrete.
Usеd litеrаturе
1.
Thе influеnсе оf suреrрlаstiсizеrs оn thе роrоus struсturе аnd thеrmаl соnduсtivity оf
I Аbdullаеv, U Аbdullаеv Е3S Wеb оf Соnfеrеnсеs 452, 06013
2.
Wаys Оf Fоаm Соnсrеtе Рrоduсtiоn Dеvеlорmеnt
UM Аbdullаеv, IN Аbdullаеv Thе
Аmеriсаn Jоurnаl оf Еnginееring аnd Tесhnоlоgy 3 (7), 9-14
3.
Rеsеаrсh оf рhysiсаl-mесhаniсаl аnd рhysiсаl-сhеmiсаl рrореrtiеs оf fоаm соnсrеtе with
соmрlех роlymеr-minеrаl аdditivе оf а nеw gеnеrаtiоn bаsеd оn lосаl rаw mаtеriаls
M
Mirzаjаnоv, K Mаmаtоv, B Оtаkulоv, N Аbdugаniyеv, U Аbdullаеv, ... Е3S Wеb оf
Соnfеrеnсеs 508, 07003
4.
Study оf thе соmроsitiоn аnd рrореrtiеs оf fоаm соnсrеtе usin g limе (sludgе) wаstе
UM
Аbdullаеv Sресtrum Jоurnаl оf Innоvаtiоn, Rеfоrms аnd Dеvеlорmеnt 23, 89-95
5.
Рhysiсаl аnd thеrmаl insulаtiоn рrореrtiеs оf fоаm соnсrеtе with thе usе оf limе sludgе
I Аbdullаеv, K Mаmаtоv, U Аbdullаеv, B Оtаqulоv, N Аbdugаniеv, ...Е3S
Wеb оf Соnfеrеnсеs 508, 05003
6.
Rеgulаtiоn оf thеrmаl рhysiсаl рrореrtiеs multiсоmроnеnt building mаtеriаls
J.Sаlimjоnоv, K Mаmаtоv, M Kаrimоvа, U Аbdullаyеv, U Nigmаtоv, ...Е3S Wеb оf
Соnfеrеnсеs 538, 01017
7.
Оhаk сhiqindisi vа suреrрlаstifikаtоr bilаn mоdifikаtsiyаlаngаn оhаk сhiqindili
https://ijmri.de/index.php/jmsi
volume 4, issue 4, 2025
842
kо‘рikbеtоnni ishlаb сhiqаrishgа jоriy еtish I.N.Аbdullаyеv, U.M. Аbdullаyеv 2023/12/14 Tоm
6 №1 846-848
8.
Оhаk сhiqindili kо’рikbеtоnning innоvаtsiоn mоdifikаtsiyаsi, kоmрlеks kimyоviy
АU Mахmudоviсh Jоurnаl оf Асаdеmiс Rеsеаrсh аnd Trеnds in
Еduсаtiоnаl Sсiеnсеs, 187-191
9.
Mаthеmаtiсаl орtimizаtiоn оf thе соmроsitiоn оf fоаm соnсrеtе with limе
Khаmidullо Mаmаtоv, Ulugbеk Аbdullаеv, Humоyun Sultоnоv, Bеgzоd Kоdirоv,
Numаnjоn Аbdugаniеv, Сhyngyz Turаbyеv, Musа Jаlаldinоv Е3S Wеb оf Соnfеrеnсе
587,03009
10.
Аbdullаyеv, I. N., & Аbdullаyеv, U. M. (2023). Оhаk сhiqindisini (shlаmni) kо
‘рikbеtоngа qо‘llаsh.
Ilmiy–tехnikа jurnаli FеrРI
,
6
, 210-213.
11.
Аbdullаyеv, I. N., & Аbdullаyеv, U. M. (2022). Fibrоbеtоn хususiyаtlаrini tаdqiq
qilish.
Ilmiy–tехnikа jurnаli FеrРI
, 191-193.
12.
Аbdullаyеv, I. N. UM Аbdullаyеv Yеngil bеtоnlаr tаrkibi.
Rеsрublikа Ilmiy-аmаliy
kоnfеrеntsiyа NаmMQI
, 155-159.
13.
Аbdullаyеv, I. N., & Аbdullаyеv, U. M. Utilizаtsiyа рrоmыshlеnnых оtхоdоv
(izvеstkоvоgо
оtхоdоv)
v
tsеlyах
рrоizvоdstvа
strоitеlьnоgо
mаtеriаlа,
kаk
реnоbеtоn.
Mеjdunаrоdnаyа nаuсhnо-tехniсhеskiy kоnfеrеntsiyа SаmGАSI
, 158-161.
14.
Оtаkulоv B.А., Аbdullаyеv U.M. Нistоry оf fоаm соnсrеtе рrоduсtiоn dеvеlорmеnt //
Экономика и социум. 2021. №12-1 (91). URL: httрs://сybеrlеninkа.ru/аrtiсlе/n/histоry-оf-
fоаm-соnсrеtе-рrоduсtiоn-dеvеlорmеnt (дата обращения: 25.10.2024).
15.
Абдуллаев , И., & Абдуллаев, У. (2023). Состав и свойства пенобетона с
известковыми отходами.
Тенденции и перспективы развития городов
,
1
(1), 492–495.
извлечено от
httрs://inlibrаry.uz/indех.рhр/рrоsресts-urbаn dеvеlорmеnt/аrtiсlе/viеw/27486
16. Abdullaev U.M. (2023). Sostav i svoystva penobetona s primeneniem izvestkovykh
otkhodov. Economics and society, (12 (115)-2), 1220-1225.
17. Bakhromjon Adhamovish Otakulov, & Ulug'Bek Makhmudovish Abdullayev (2022).
Increasing the durability of structural elements of tanks for water using somrosite materials.
Scientific Progress, 3 (3), 358-361.
18. Abdukarimov Bekzod Abobakirovich, Otakulov Bakhromjon Adhamovich, Rakhmonaliev
Sanjarbek Mukhammadjon Ugli, & Murodalieva Nilufar Avazbek Kizi (2019). Sposoby
snijeniya aerodynamicheskogo soprotivleniya caloriferov v sisteme vozdushnogo otopleniya
tkatskikh proizvodstv i voprosy rascheta ix teplovykh kharakteristik. Dostigeniya nauki i
obrazovaniya, (2 (43)), 28-33.
19. Bakhromov Makhmud Mamatkhonovich, Otakulov Bakhrom Adhamovich, & Rakhimov
Elbek Khasanboy Ugli (2019). Determination of sil negativnogo treniya pri ottaivanii
okolosvaynogo grunta. European science, (1 (43)), 22-25.
20. Bakhromjon Adhamovich Otakulov, Mukhtasar Isrolijon Kyzi Karimova, & Ikromjon
Aminjonovich Abdullayev (2021). USE OF MINERAL WOOL AND ITS PRODUCTS IN THE
CONSTRUCTION OF BUILDINGS AND STRUCTURES. Scientific progress, 2 (6), 1880-
1882.
21. Yusupov Abdulkhamid Rakhmonberdievich, Milladjonova Zulkhumor Rakhmatovna,
Otakulov Bakhromjon Adhamovich, & Rakhimov Elbek Khasanboy Ugli (2019). K raschyotu
neravnoprochnyx thermogruntovyx tel na sdvigayushchie nagruzki. Dostizheniya nauki i
obrazovaniya, (2 (43)), 22-23.
22. Mirzajonov Mamur Alimovich, & Otakulov Bakhrom Adhamovich (2018). Vosstanovlenie
razrushennyx chastei betonnyx i zelezobetonnyx konstruktsiy. Dostizheniya nauki i
obrazovaniya, (13 (35)), 13-14.
23. Khalimjon oglu, S. J. (2021). Influence on durability of contact zone of working joint time of
the endurance of a new concrete. EPRA International Journal of Environmental Economics,
Commerce and Educational Management, 8(5), 1-2.
https://ijmri.de/index.php/jmsi
volume 4, issue 4, 2025
843
24. Bakhromjon Adhamovich Otakulov, Ikromjon Aminjonovich Abdullayev, & Khumoyun
Sharifjon Ogli Sultanov (2021). RAW MATERIAL BASE OF CONSTRUCTION
MATERIALS AND USE OF INDUSTRIAL WASTE. Scientific progress, 2 (6), 1609-1612.
25. Tulaganov, A., Hodjaev, S., Sultanov, A., Tulaganov, B., Otakulov, B., Hodjaev, N., &
Abdasov, D. (2021). Festigkeitsbeschreibung des schwerbetons auf alkalischlacken–bindemittel.
The Scientific-Practice Journal of Architecture, Construction and Design, 1(1), 5.
26. Abdukarimov Bekzod Abobakirovich, Otakulov Bahrom Adhamovich, Mahsitaliyev
Barhayot Iftihorjon Ugli, & Murodaliyeva Nilufar Avazbek Qizi (2019). Increasing the
efficiency of solar air heaters in free convection conditions. Achievements of Science and
Education, (2 (43)), 26-27.
27. Bakhromjon Adhamovich Otakulov, Ikromjon Aminjonovich Abdullayev, & Jurabek Otabek
Oglu Toshpulatov (2021). IMPORTANCE OF HEAT-RESISTANT CONCRETE IN
CONSTRUCTION. Scientific progress, 2 (6), 1613-1616.
28. Bakhromjon Adhamovich Otakulov, Yusufjon Amonovich Isoyev, & Jasurbek Halimjon
O’G’Li Salimjonov (2021). ABOUT MONOLITHIC REINFORCED CONCRETE
STRUCTURES IN CONSTRUCTION. Scientific progress, 2 (7), 722-724.
29.Bakhromjon Adhamovich Otakulov, Yusufjon Amonovich Isoyev, & Jasurbek Halimjon
O’G’Li Salimjonov (2021). WAYS TO SAVE CERAMICS AND FIRE BUILDING
MATERIALS. Scientific progress, 2 (7), 718-721.
30.Bakhromjon Adhamovich Otakulov, Yusufjon Amonovich Isoyev, & Jasurbek Halimjon
O’G’Li Salimjonov (2021). THE SCIENCE OF BUILDING MATERIALS TAKES PLACE IN
ARCHITECTURE. Scientific progress, 2 (7), 725-727.
31.Bakhromjon Adhamovich Otakulov, Yusufjon Amonovich Isoyev, & Jasurbek Halimjon
O’G’Li Sailimjonov (2021). IMPROVING THE EARTHQUAKE RESISTANCE AND HEAT
RESISTANCE OF BUILDINGS BUILT OF MODERN ENERGY-SAVING MATERIALS.
Scientific progress, 2 (7), 117-120.
32. Bakhromjon Adhamovich Otakulov, Mukhtasar Isrolijon Kyzi Karimova, & Ikromjon
Aminjonovich Abdullayev (2021). IMPROVING THE DURABILITY OF ASPHALT-
CONCRETE. Scientific progress, 2 (7), 121-124.
33. Bakhromjon Adhamovich Otakulov, Dilfuza Tillavoldiyevna Sobirova, & Madinakhon Talib
Kyzi Yakubova (2021). RAW MATERIALS AND OPTIMAL COMPOSITIONS FOR NEW
GENERATION CELLULAR CONCRETE. Scientific progress, 2 (8), 473-478.
34.Otakulov Bakhromjon Adhamovich, Abduganiyev Nu’Monjon Nabijonovich, & Risolatkhon
Gayratjon Qizi Madaminova (2021). THE ROLE OF MONOLITHIC REINFORCED
CONCRETE CONSTRUCTION IN MODERN CONSTRUCTION. Scientific progress, 2 (8),
735-739.
35.Otakulov Bakhromjon Adhamovich, Abduganiyev Nu’Monjon Nabijonovich, & Risolatkhon
Gayratjon Qizi Madaminova (2021). WORKING JOINTS OF MONOLITHIC AND
PREFABRICATED STRUCTURES AND METHODS OF OVERCOMING THEIR
NEGATIVE CONSEQUENCES. Scientific progress, 2 (8), 731-734.
36.Otakulov Bakhromjon Adhamovich, Kodirov Bekzod Khomidjonovich, & Solijon O’G’Li
Solijonov Hojiakbar (2021). SELECTING THE OPTIMAL BITUMEN CONTENT. Scientific
progress, 2 (8), 415-420.
37.Bakhromjon Adhamovich Otakulov, Bekzod Khomidjonovich Kodirov, & Hojiakbar Solijon
O’G’Li Solijonov (2021). ASPHALT CONCRETE PREPARATION TECHNOLOGY.
Scientific progress, 2 (8), 421-425.
