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Prestressed cement, preparation method and application thereof, prestressed cement paste and application thereof

A prestressed and cement slurry technology, applied in the field of prestressed cement slurry and its application, prestressed cement and its preparation, can solve problems such as inconvenient communication and problem solving, and achieve the effect of a wide range of particle size distribution

Active Publication Date: 2021-01-01
大连水泥集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of prestressed cement and its preparation method and application, prestressed cement slurry and its application, the technical problem to be solved is to make the prestressed cement localized for nuclear power safety island construction, and replace the cement imported from France; The performance of the prestressed cement described above meets the construction requirements of the safety island project, and there is no problem of long transportation time and inconvenient communication to solve the problem. The cost is economical, the cost of nuclear power construction is reduced, and the supply is efficient, so it is more suitable for practical use.

Method used

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  • Prestressed cement, preparation method and application thereof, prestressed cement paste and application thereof
  • Prestressed cement, preparation method and application thereof, prestressed cement paste and application thereof
  • Prestressed cement, preparation method and application thereof, prestressed cement paste and application thereof

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preparation example Construction

[0082] The present invention also proposes a kind of preparation method of prestressed cement, and it comprises the following steps:

[0083] 1) Cement clinker and gypsum ingredients, so that SO in the mixture 3 The mass percentage content is 2.1~2.4%; Wherein, by mass percentage content, the mineral composition of described cement clinker mainly comprises:

[0084]

[0085] The rate value of the cement clinker: KH is 0.83-0.89, SM is 2.7-3.0, IM is 0.65-0.9;

[0086] 2) The prepared material in step 1) is rolled, dispersed and pulverized;

[0087] 3) The material obtained by grinding in step 2) is selected for powder, and the material whose fineness does not meet the requirements is returned to step 2) for grinding, and the material whose fineness meets the requirements is collected as prestressed cement.

[0088]When the prestressed cement is prepared, firstly, the cement clinker and gypsum are batched, and the mixture is rolled by a roller press, dispersed by a dispers...

Embodiment 1

[0104] Weigh 95 parts of cement clinker and 5 parts of natural dihydrate gypsum. Among them, the chemical composition analysis of cement clinker is shown in Table 1:

[0105] Table 1, the content is in mass percentage, %

[0106] Loss on ignition SiO 2

al 2 o 3

Fe 2 o 3

CaO MgO SO 3

K 2 o

Na 2 o

f-CaO 0.11 23.40 3.36 4.94 64 2.1 0.69 0.6 0.07 0.27

[0107] The mineral composition and percentage value of described cement clinker are as shown in table 2-1:

[0108] Table 2-1, content in mass percentage, %

[0109] C 3 S

C 2 S

C 3 A

C 4 AF

K H SM IM 50.19 29.52 0.56 15.02 0.862 2.82 0.68

[0110] The physical performance of described cement clinker is as shown in table 2-2:

[0111] Table 2-2

[0112]

[0113] The gypsum is natural dihydrate gypsum produced in Shanxi, and its crystal water content is greater than 15% when it enters the factory for in...

Embodiment 2

[0133] Weigh 95 parts of cement clinker and 5 parts of natural dihydrate gypsum. Among them, the chemical composition analysis of cement clinker is shown in Table 7:

[0134] Table 7, the content is in mass percentage, %

[0135] Loss on ignition SiO 2

al 2 o 3

Fe 2 o 3

CaO MgO SO 3

K 2 o

Na 2 o

f-CaO 0.10 23.98 3.36 4.94 63 2.8 0.65 0.6 0.07 0.27

[0136] The mineral composition and percentage value of the cement clinker are as shown in Table 8-1:

[0137] Table 8-1, content in mass percentage, %

[0138] C 3 S

C 2 S

C 3 A

C 4 AF

K H SM IM 41.71 37.54 0.56 15.02 0.831 2.93 0.7

[0139] The physical performance of described cement clinker is as shown in table 8-2:

[0140] Table 8-2

[0141]

[0142]

[0143] The gypsum is natural dihydrate gypsum produced in Shanxi, and its crystal water content is greater than 15% when it enters the factory f...

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Abstract

The invention mainly aims to provide prestressed cement, a preparation method and application thereof, prestressed cement slurry and application thereof. The prestressed cement comprises cement clinker and gypsum; the cement clinker mainly comprises the following mineral compositions in percentage by mass: 41-50% of tricalcium silicate; 29%-38% of dicalcium silicate; 0%-3% of tricalcium aluminate;15%-22% of tetracalcium aluminoferrite; wherein the cement clinker has the following rate values: the KH is 0.83 to 0.89, the SM is 2.7 to 3.0, and the IM is 0.65 to 0.9; and in the prestressed cement, the mass percentage of SO3 is 2.1%-2.4%. The technical problem to be solved is to domesticate prestressed cement meeting nuclear power safety island construction and replace cement imported from French. The performance of the prestressed cement meets the construction requirements of safety island engineering, the problems of long transportation time and inconvenience in communication and problem solving do not exist, the cost is economic, the nuclear power construction cost is reduced, and the supply is efficient, so that the prestressed cement is more practical.

Description

technical field [0001] The invention belongs to the technical field of special cement manufacture, and in particular relates to a prestressed cement and its preparation method and application, prestressed cement slurry and its application. Background technique [0002] In 2011, the "Emerging Energy Industry Development Plan" was approved by the National Development and Reform Commission and submitted for approval, focusing on the "two goals" of increasing carbon emission reduction and the proportion of non-fossil energy; the non-fossil energy industry will enter a development period. It is estimated that by 2020, China's new energy power generation installed capacity will be 290 million kilowatts, accounting for about 17% of the total installed capacity. Among them, the installed capacity of nuclear power will reach 70 million kilowatts. In the medium and long term, the development of pollution-free clean coal power generation technology is the key to China's realization of...

Claims

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Application Information

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IPC IPC(8): C04B7/04C04B7/52C04B28/04
CPCC04B7/04C04B7/52C04B28/04C04B22/16C04B2103/302
Inventor 刘圣忠刘文忱赵兵曲巍刘新宇李深志王桂香
Owner 大连水泥集团有限公司