RU2187477C1 - Binding agent - Google Patents

Binding agent Download PDF

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Publication number
RU2187477C1
RU2187477C1 RU2001116191/03A RU2001116191A RU2187477C1 RU 2187477 C1 RU2187477 C1 RU 2187477C1 RU 2001116191/03 A RU2001116191/03 A RU 2001116191/03A RU 2001116191 A RU2001116191 A RU 2001116191A RU 2187477 C1 RU2187477 C1 RU 2187477C1
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RU
Russia
Prior art keywords
binding agent
moo
cement
plastic strength
portland cement
Prior art date
Application number
RU2001116191/03A
Other languages
Russian (ru)
Inventor
Н.Н. Шангина
Л.Б. Сватовска
Л.Б. Сватовская
П.Г. Комохов
Д.В. Герчин
В.Ю. Шангин
М.Г. Огнев
А.А. Самойлов
Original Assignee
Санкт-Петербургский государственный университет путей сообщения
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Санкт-Петербургский государственный университет путей сообщения filed Critical Санкт-Петербургский государственный университет путей сообщения
Priority to RU2001116191/03A priority Critical patent/RU2187477C1/en
Application granted granted Critical
Publication of RU2187477C1 publication Critical patent/RU2187477C1/en

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/06—Oxides, Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/0004—Compounds chosen for the nature of their cations
    • C04B2103/0017—Refractory metal compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34—Non-shrinking or non-cracking materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

FIELD: manufacture of building materials. SUBSTANCE: binding agent contains 80-99% Portland cement and 1-20% molybdenum trioxide. EFFECT: increased plastic strength of cement mortar and reduced shrinkage during hardening. 1 tbl

Description

Изобретение относится к строительным материалам и может быть использовано в качестве вяжущего. The invention relates to building materials and can be used as a binder.

Известны вяжущие содержащие, например, хлорид кальция для повышения пластической прочности и ускорения твердения (Справочное пособие "Добавки в бетон". / Под ред. В. С.Рамачандрана. - М.: Стройиздат, 1988, с.38), ГОСТ 24211-91 /Добавки для бетонов/. Known binders containing, for example, calcium chloride to increase plastic strength and accelerate hardening (Reference manual "Additives in concrete". / Ed. By V. S. Ramachandran. - M .: Stroyizdat, 1988, p. 38), GOST 24211- 91 / Additives for concrete.

Недостатком данного вяжущего является низкая пластическая прочность цементного теста и высокая усадка при твердении раствора или бетона. The disadvantage of this binder is the low plastic strength of the cement paste and high shrinkage during hardening of the mortar or concrete.

Наиболее близким к изобретению по технической сущности и достигаемому результату является вяжущее, содержащее хлорид кальция и лигносульфонат кальция (см. там же, с.55). The closest to the invention in technical essence and the achieved result is an astringent containing calcium chloride and calcium lignosulfonate (see ibid., P. 55).

Недостатком данного вяжущего является низкая пластическая прочность цементного теста и высокая усадка при твердении раствора или бетона. The disadvantage of this binder is the low plastic strength of the cement paste and high shrinkage during hardening of the mortar or concrete.

Задачей данного изобретения является повышение пластической прочности цементного теста и снижение усадки при твердении. The objective of the invention is to increase the plastic strength of cement paste and reduce shrinkage during hardening.

Технический результат достигается тем, что в качестве добавки к цементу используется твердая кислота - труднорастворимый оксид молибдена МоО3 при следующем весовом соотношении компонентов, мас.%:
Портландцемент - 80-99
МоО3 - 1-20
Акцепторные свойства поверхности твердого вещества оксида молибдена МоО3 позволяют ему структурировать воду, что проявляется в увеличении пластической прочности цементного теста.The technical result is achieved by the fact that a solid acid is used as an additive to the cement — sparingly soluble MoO 3 molybdenum oxide in the following weight ratio of components, wt.%:
Portland cement - 80-99
MoO 3 - 1-20
The acceptor properties of the surface of the solid substance of molybdenum oxide MoO 3 allow it to structure water, which is manifested in an increase in the plastic strength of the cement paste.

Пример
К цементу добавляется измельченный до порошкообразного состояния оксид молибдена МоО3, при следующем весовом соотношении компонентов, мас.%:
Портландцемент - 80-99
МоО3 - 1-20
В таблице приведены результаты исследования вяжущего, полученного предлагаемым способом, в соответствии с ГОСТ 5802-86 /Растворы строительные. Методы испытаний/.Example
To the cement, molybdenum oxide MoO 3 , crushed to a powder state, is added, with the following weight ratio of components, wt.%:
Portland cement - 80-99
MoO 3 - 1-20
The table shows the results of a study of the binder obtained by the proposed method, in accordance with GOST 5802-86 / Building solutions. Test Methods.

При замене части цемента оксидом молибдена в количестве более 5% происходит значительное сокращение сроков схватывания. Поэтому рекомендуемое количество МоО3 - 5%.When replacing part of the cement with molybdenum oxide in an amount of more than 5%, a significant reduction in setting time occurs. Therefore, the recommended amount of MoO 3 is 5%.

Claims (1)

Вяжущее, содержащее портландцемент, отличающееся тем, что оно дополнительно содержит оксид молибдена МоО3 при следующем соотношении компонентов, мас.%:
Портландцемент - 80 - 99
МоО3 - 1 - 20рA binder containing Portland cement, characterized in that it additionally contains MoO 3 molybdenum oxide in the following ratio, wt.%:
Portland cement - 80 - 99
MoO 3 - 1 - 20r
RU2001116191/03A 2001-06-09 2001-06-09 Binding agent RU2187477C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2001116191/03A RU2187477C1 (en) 2001-06-09 2001-06-09 Binding agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2001116191/03A RU2187477C1 (en) 2001-06-09 2001-06-09 Binding agent

Publications (1)

Publication Number Publication Date
RU2187477C1 true RU2187477C1 (en) 2002-08-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001116191/03A RU2187477C1 (en) 2001-06-09 2001-06-09 Binding agent

Country Status (1)

Country Link
RU (1) RU2187477C1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
РАМАЧАНДРАН B.C. Добавки в бетон. - М.: Стройиздат, 1988, с.38, 55. *

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Effective date: 20030610