s u m m a r y
Сonstruction industry in focus (p. 4)
MATERIALS
Krivoborodov Yu.R., Kuznetsova T.V. The influence
of plasticizer on aluminum cements
Authors studied the influence of super- and hyperplasticizers
on the hydration of alumina and high-alumina
cements. It is established that plasticizers reduce
the water requirement of cement paste and thereby
increase the strength of the cement stone. At the same
time, being adsorbed on particles of cement and their
hydration products, plasticizers slow down hydration
of alumina cements. Accordingly, the potential of
these cements is not fully utilized. It is recommended
when using aluminous cements to the choice of plasticizers
is more attentively than at the use of Portland
cement (p. 8).
Kucherenko A.A. Energetics of domain granuС
О Д Е Р Ж А Н И Е
Новости строительного комплекса ............................................. 4
МАТЕРИАЛЫ
Кривобородов Ю.Р., Кузнецова Т.В. Влияние
пластификатора на свойства алюминатных цементов ............ 8
Кучеренко А.А. Энергетика доменного гранулированного
шлака ....................................................................................... 12
Керш В.Я., Фощ А.В., Колесников А.В.
Модернизированный критерий водостойкости
и гипсосодержащих материалов ............................................. 16
Сивков С.П., Логинова Т.В., Мымрина А.К. Биодобавки
для сухих строительных смесей ............................................... 20
Логанина В.И., Пышкина И.С. Реологические свойства
известковой отделочной смеси с применением
синтезированных гидросиликатов кальция ............................ 24
ОБОРУДОВАНИЕ
Уфимцев В.М. Технологическая известь на дисперсном сырье ... 26
ТЕХНОЛОГИИ
Корчунов И.В., Торшин А.О., Курдюмова С.Е.,
Дмитриева Е.А., Потапова Е.Н. Влияние эффективных
водоредуцирующих добавок на свойства цемента ................. 30
Мухамедбаев Аг.А. Механоактивация алюмосиликатного
компонента безобжигового щелочного вяжущего .................. 36
ИНФОРМАЦИЯ
Давидюк А.Н., Батдалов Ю.Р. Бетонные смеси, готовые
к употреблению, не являются сухими, как полагают
эксперты Росстандарта ............................................................. 40
СОБЫТИЯ
Копылов И.А. Итоги bauma CTT RUSSIA 2019 ............................ 44
lar slag
According to the chemical composition and taking
into account the electrical structure of the atoms,
the thermodynamic characteristics of the domain
granulated slag as a raw material for Portland
slag cement or an additive to cements of any kind
and as already calcined substance are studied in
comparison with similar characteristics of Portland
cement 500, whose raw materials require roasting.
The material and quantitative compositions of slag
oxides were studied, their charge and energy of interatomic
bonds were calculated. The identity of the
properties of slag and cement is shown. An example
of slag adjustment by the number of charges of a
different sign is given. Based on a stable slag composition,
it was proposed to develop an unbaked
binder technology (p. 12).
Kersh V.Ya., Foshch A.V., Kolesnikov A.V. The modance
of materials containing gypsum is the water
resistance index. The advantages of this criterion
in comparison with the softening coefficient are
considered – the correct account of the strength of
the material in a water-saturated state, statistical
determinism, a wide range of changes. The water
resistance index has been successfully used in solving
problems of optimizing the composition of the material
(p. 16).
Article proposes a new criterion for water resistadditives
for dry mortars
The influence of bacteria on the properties of ceSivkov
S.P., Loginova T.V., Mymrina A.K. Biological
ment stone was investigated. It is shown that the
introduction of bacteria in the composition of cement
at the stage of mixing with water leads to increase
strength of hardened cement stone and to compaction
of the cement stone due to the filling of its pores by
calcium carbonate released as a waste product of the
bacteria existence. The technology of production of
dry bio-additives on the basis of bacteria spores was
developed and it is established that its effectiveness
are not inferior in comparison to living cultures of bacteria
(p. 20).
Loganina V.I., Pyshkina I.S. Rheological properties
calcareous compounds structure formation using additives
based on calcium hydrosilicates (p. 24)
Paper deals with the information on the patterns of
of lime finishing mixtures with the use of synthesized
hydrosilicate calcium
ernized criterion of water resistance and gypsumcontaining
materials
Стр.4
s u m m a r y
raw material
Author points out that current market value of the
EQUIPMENT
Ufimtsev V.M. Technological lime in dispersed
1st grade lime is balanced with cement because it
has become much more complex equipment and operating
costs. The use of bulk raw materials extends
the life of the roasting of lime, reduces its activity,
eliminate the use of small fractions of raw materials.
Sinter firing of granules on the basis of fine lime
diluted with petroleum coke cut the firing time, increases
the activity of lime, eliminate the loss of limestone.
Replacement of a piece by granules not only
significantly reduces the cost of the lime, but at the
same time, removing the need for highly distressed
lime slaking (p. 26).
Dmitrieva E.A., Potapova E.N. Influence of effective
water reducing additives on properties of cement
TECHNOLOGIES
Korchunov I.V., Torshin A.O., Kurdyumova S.E.,
C O N T E N T S
The use of plasticizers additives is an affordable and
cost-effective way of increasing the quality of solutions
and concrete. This work presents the influence of
«Master» superplasticizers additives on the properties
of cement. It was revealed that the adding of 0,30,7%
of these supplements can increase durability
and reduce porously of the cement stone what result
in its frost resistance. The paper shows that the lignosulfonate
additives are as effective as the additives
based of polycarboxylates ether (p. 30).
Mukhamedbaev Ag.A. Mechanoactivation of
alumosilicate component of unburned alkaline
binder
chanical activation of the alumino silicate component
in ball mill. The optimal duration of grinding is defined
from the viewpoint of physical and mechanical
characteristics and expenditure of energy in fine
grinding (p. 36).
The investigations have been carried out for meready
to use do not be dry as Rosstandard experts
believe
INFORMATION
Davidjuk A.N., Batdalov Y.R. Concrete mixes
ready-mixed concrete mandatory declaration in accordance
with the requirements of GOST 7473
«Concrete Mixtures. Specifications» and GOST 28013
«Construction Mortars. General specifications» (the
standard as a whole). These standards are included in
the List of standards for dry mix subject to mandatory
confirmation of compliance. Unlike dry building mixes,
ready-to-use ready-mixed concrete and mortars exist
as a product only for the period between preparation
on concrete and mortar mixing plants and delivery to
the object under construction. At the same time, each
batch of concrete mix or ready-made mortar shipped
to the consumer is accompanied by a quality document,
which indicates compliance with the requirements
of regulatory state standards (p. 40).
Article is devoted to the issue of the quality of
EVENTS
Kopylov I.A. Results of bauma CTT RUSSIA 2019
On the hottest first days of summer, the largest
exhibition of construction equipment and technologies
in Russia and Eastern Europe, bauma CTT RUSSIA
2019, took place in Moscow from 4 to 7 June at the
international Exhibition Center Crocus Expo (p. 44).
Сonstruction industry in focus ................................................... 4
MATERIALS
Krivoborodov Yu.R., Kuznetsova T.V. The influence of
plasticizer on aluminum cements ............................................ 8
Kucherenko A.A. Energetics of domain granular slag .................. 12
Kersh V.Ya., Foshch A.V., Kolesnikov A.V. The modernized
criterion of water resistance and gypsum-containing
materials ................................................................................ 16
Sivkov S.P., Loginova T.V., Mymrina A.K. Biological additives
for dry mortars ....................................................................... 20
Loganina V.I., Pyshkina I.S. Rheological properties of
lime finishing mixtures with the use of synthesized
hydrosilicate calcium .............................................................. 24
EQUIPMENT
Ufimtsev V.M. Technological lime in dispersed raw material ....... 26
TECHNOLOGIES
Korchunov I.V., Torshin A.O., Kurdyumova S.E., Dmitrieva E.A.,
Potapova E.N. Influence of effective water reducing
additives on properties of cement ........................................... 30
Mukhamedbaev Ag.A. Mechanoactivation of alumosilicate
component of unburned alkaline binder ................................. 36
INFORMATION
Davidjuk A.N., Batdalov Y.R. Concrete mixes ready to use
do not be dry as Rosstandard experts believe .......................... 40
EVENTS
Kopylov I.A. Results of bauma CTT RUSSIA 2019 ....................... 44
Стр.5