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

A concrete and seawater technology, which is 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 cycle of land transportation building materials, so as to reduce the reserve and solve the problem of dependence Effect

Active Publication Date: 2022-07-29
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 emergency repair and construction engineering and preparation method thereof
  • Seawater coral aggregate concrete for emergency repair and construction engineering and preparation method thereof
  • Seawater coral aggregate concrete for emergency repair and construction engineering and preparation method thereof

Examples

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preparation example Construction

[0047] like figure 1 As shown in the figure, the preparation method of seawater coral aggregate concrete for emergency repair and emergency construction provided by the present invention is applied to the cast-in-place construction process or prefabrication process of seawater coral aggregate concrete for emergency repair and emergency construction. 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, adding the coral aggregate in the raw material and the first part of seawater into a mixer, and stirring for 2 minutes to obtain a first-grade mixture; wherein, the quality of the first part of seawater is 10-15% of the quality of the coral aggregate, and the The particle size is less than 30mm;

[0051] S140, add the other raw materials in the raw material that remove ...

Embodiment 1

[0064] The raw material percentage of seawater coral aggregate concrete used in emergency repair and construction projects is shown in Table 1. Among them, the cement is magnesium phosphate cement.

[0065]

[0066] Table 1

[0067] The comparative examples in Table 1 were prepared by conventional concrete preparation methods;

[0068] The seawater coral aggregate concrete formulations used in the rush repair and rush construction projects in each embodiment are prepared by the following methods, including the following steps:

[0069] Weigh the raw materials according to the 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] The coral aggregate in the raw material and the first part of seawater are added to the mixer, and stirred for 2 minutes to obtain a first-grade mixture; wherein, the quality of the first part of seawater is 10-15% of the quality of the cor...

Embodiment 2

[0080] The raw material percentage of seawater coral aggregate concrete used in emergency repair and construction projects is shown in Table 3, wherein the cement is sulfoaluminate cement.

[0081]

[0082] table 3

[0083] The seawater coral aggregate concrete formula used for emergency repair and emergency construction in the comparative example in Table 3 and Example No. 1 is prepared by the following methods, comprising the following steps:

[0084] Weigh the raw materials according to the 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. , as an accelerator;

[0086] The coral aggregate in the raw material and the second part of seawater are added to the mixer, and stirred for 2 minutes to obtain a first-grade mixture; wherein, the quality of the second part of seawater is 10-15% of the quality of the coral aggregate, and the coral a...

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Abstract

The invention provides a seawater coral aggregate concrete used for emergency repair and construction projects and a preparation method thereof, comprising the following raw materials by mass percentage: 15-40% of cement, 0-5% of borax, 0-10% of fly ash, coral Aggregate 35~70%, steel fiber 0.1~4%, organic fiber 0.01~0.5%, thickener 0.01~0.10%, early strength agent 0.01~0.3%, retarder 0.01~0.15%, water reducer 0.01~ 1.5%, quick-hardening agent 0.01-7%, seawater 5-15%. By using coral aggregates and seawater as the raw materials for rush-repair and rush-construction concrete, the invention maximizes the on-site rate of raw materials, greatly reduces the amount of land transportation materials and material reserves in the rush-repair and rush-build project of islands and reefs, and breaks through the existing The high degree of dependence of technology on ground transportation materials in special emergency situations is a difficult problem. At the same time, the diversification of construction techniques and the localization of raw materials also greatly improve the multi-scenario applicability of the present invention.

Description

technical field [0001] The invention relates to the technical field of emergency repair and construction materials, and more particularly, to a seawater coral aggregate concrete used for emergency repair and construction projects and a preparation method thereof. Background technique [0002] In the construction of remote islands and reefs, especially in special emergencies, such as emergency repair projects of military facilities during wartime, not only the emergency repair and emergency construction materials are required to meet the requirements of high early strength and fast construction speed, but also local materials should be obtained as much as possible to reduce the use of traditional land transportation construction materials. Depends on, and meets a variety of construction techniques and usage scenarios at the same time. [0003] Traditional building materials, especially sand and gravel aggregates, have long transportation cycles, high transportation costs, lar...

Claims

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Application Information

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Patent Type & Authority Patents(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 丁小平韩宇栋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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