Seawater coral aggregate concrete for rush repair and emergency construction engineering and preparation method thereof

A technology for concrete and seawater, applied in the field of seawater coral aggregate concrete and its preparation, can solve the problems of high transportation cost, high dependence on land transportation building materials, and long transportation period of land transportation building materials, so as to reduce reserves and solve the problems of dependence. Effect

Active Publication Date: 2021-03-23
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the purpose of the present invention is to provide a kind of seawater coral aggregate concrete and its preparation method for emergency repair and construction projects, so as to solve the problems of high dependence on land transportation building materials, long transportation period of land transportation construction materials, and transportation problems in the prior art. high cost

Method used

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  • Seawater coral aggregate concrete for rush repair and emergency construction engineering and preparation method thereof
  • Seawater coral aggregate concrete for rush repair and emergency construction engineering and preparation method thereof
  • Seawater coral aggregate concrete for rush repair and emergency construction engineering and preparation method thereof

Examples

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preparation example Construction

[0047] Such as figure 1 As shown, the preparation method of the seawater coral aggregate concrete used for rush repair and rush construction projects provided by the present invention is applied to the cast-in-place construction technology or prefabrication process of seawater coral aggregate concrete for rush repair and rush construction projects. The method includes the following steps:

[0048] S110, weighing raw materials according to mass percentage;

[0049] S120, dividing the seawater in the raw material into two parts, namely the first part of seawater and the second part of seawater;

[0050] S130. Add the coral aggregate and the first part of seawater in the raw material to the mixer, and stir for 2 minutes to obtain the first-stage mixture; wherein, the quality of the first seawater is 10% to 15% of the quality of the coral aggregate, and the coral aggregate The particle size is not more than 30mm;

[0051] S140. Add other raw materials except the second portion ...

Embodiment 1

[0064] Table 1 shows the raw material percentages of seawater coral aggregate concrete used for emergency repair and construction projects. Among them, the cement is magnesium phosphate cement.

[0065]

[0066] Table 1

[0067] The comparative example in table 1 is prepared by conventional concrete preparation method;

[0068] The formula of seawater coral aggregate concrete used for emergency repair and construction projects in each embodiment is prepared by the following method, including the following steps:

[0069] Weigh raw materials according to mass percentage;

[0070] The seawater in the raw material is divided into two parts, namely the first part of seawater and the second part of seawater;

[0071] Add the coral aggregate and the first part of seawater in the raw material into the mixer, and stir for 2 minutes to obtain the first-stage mixture; wherein, the quality of the first part of seawater is 10% to 15% of the quality of the coral aggregate, and the pa...

Embodiment 2

[0080] The raw material percentages of seawater coral aggregate concrete used for emergency repair and construction projects are shown in Table 3, where the cement is sulphoaluminate cement.

[0081]

[0082] table 3

[0083] The seawater coral aggregate concrete formula that is used in the comparative example in the table 3 and No. 1 embodiment to repair and rush to build works, all adopts following method to prepare, comprises the following steps:

[0084] Weigh raw materials according to mass percentage;

[0085] The seawater in the raw material is divided into three parts, which are the first part of seawater, the second part of seawater and the third part of seawater, wherein the first part of seawater is mixed with the sum of the early strength agent and the quick hardening agent in the raw material in equal amounts , as an accelerator;

[0086] Add the coral aggregate and the second part of seawater in the raw material into the mixer, stir for 2 minutes, and obtain...

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Abstract

The invention provides seawater coral aggregate concrete for rush repair and emergency construction engineering and a preparation method thereof. The seawater coral aggregate concrete comprises the following raw materials in percentage by mass: 15-40% of cement, 0-5% of borax, 0-10% of fly ash, 35-70% of coral aggregate, 0.1-4% of steel fiber, 0.01-0.5% of organic fiber, 0.01-0.10% of thickener, 0.01-0.3% of early strength agent, 0.01-0.15% of retarder, 0.01-1.5% of water reducing agent, 0.01-7% of rapid hardening agent, and 5-15% of seawater. By adopting the coral aggregate and seawater as the raw materials of the rush-repair and rush-construction concrete, the local material utilization rate of the raw materials is improved to the maximum extent, the land transportation material transportation amount and the material reserve amount in island rush-repair and rush-construction engineering are greatly reduced, and the problems that in the prior art, the dependence degree on land transportation materials under special emergency conditions is high and the like are solved. Meanwhile, the construction process is diversified, the raw materials are in an island shape, and the multi-sceneapplicability of the method is greatly improved.

Description

technical field [0001] The invention relates to the technical field of emergency repair and construction materials, and more specifically relates to seawater coral aggregate concrete used in emergency repair and emergency construction projects and a preparation method thereof. Background technique [0002] In the construction of remote sea islands and reefs, especially in special emergency situations, such as the emergency repair project of military facilities in wartime, not only the rush repair and rush construction materials are required to meet the requirements of high early strength and fast construction speed, but also need to use local materials as much as possible to reduce the use of traditional land transportation construction materials. Dependence, while meeting a variety of construction techniques and usage scenarios. [0003] Traditional building materials, especially sand and gravel aggregates, have long transportation cycles, high transportation costs, large s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B28/06C04B28/04C04B14/28C04B22/00
CPCC04B28/344C04B28/04C04B28/06C04B14/28C04B22/0026C04B2201/50C04B22/0013C04B18/08C04B14/48C04B2103/44C04B22/10C04B22/085C04B24/06C04B24/24C04B22/0093C04B16/0641C04B16/0633
Inventor 韩宇栋丁小平曾滨侯兆新宋涛文王振波侯东伟
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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