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Concrete in mixed radius shale ceramisite lightweight aggregate structure and preparation method thereof

A technology of shale ceramsite and lightweight aggregate, which is applied in the field of building materials, can solve the problems of heat preservation and energy saving effects, but there are few researches, and achieve the effects of widening the scope of use, good fluidity, and high thermal performance

Inactive Publication Date: 2014-08-06
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on the effects of different ceramsite particle sizes, different ceramsite gradations and different raw material mix ratios on the physical and mechanical properties, construction performance, thermal insulation and energy-saving effects of ceramsite lightweight aggregate concrete.

Method used

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  • Concrete in mixed radius shale ceramisite lightweight aggregate structure and preparation method thereof
  • Concrete in mixed radius shale ceramisite lightweight aggregate structure and preparation method thereof
  • Concrete in mixed radius shale ceramisite lightweight aggregate structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The ceramsite lightweight aggregate concrete in this example consists of the following components and weight ratio (kg / m 3 ) composition: cement 450kg / m 3 , water 180kg / m 3 , dry sand 878kg / m 3 , five different particle sizes mixed ceramsite 504kg / m 3 (The bulk density is 490kg / m 3 、570kg / m 3 、610kg / m 3 、780kg / m 3 、830kg / m 3 The ceramsite is mixed according to the mass ratio of 2:5:3:2:3 to form a bulk density of 680kg / m 3 mixed ceramsite).

[0019] The raw material ceramsite is spherical shale ceramsite, which consists of five kinds of ceramsite with different particle sizes (see Table 1 for the bulk density of the five kinds of ceramsite used). : 3 mass ratio for mixing, the bulk density of ceramsite after mixing is 680kg / m 3 , apparent density 1120kg / m 3 , porosity 39%, cylinder compressive strength 3.3MPa, water absorption 9.2%, the evaluation result is 700 grade, first-class product. After mixing spherical ceramsite with different particle sizes, it hel...

Embodiment 2

[0030] The ceramsite lightweight aggregate concrete in this example consists of the following components and weight ratio (kg / m 3 ) composition: cement 420kg / m 3 , water 170kg / m 3 , dry sand 835kg / m 3 , mixed ceramsite 504kg / m 3 , the preparation steps are the same as those of Example 1.

Embodiment 3

[0032] The ceramsite lightweight aggregate concrete in this example consists of the following components and weight ratio (kg / m 3 ) composition: cement 500kg / m 3 , water 200kg / m 3 , dry sand 920kg / m 3 , mixed ceramsite 504kg / m 3 , the preparation steps are the same as those of Example 1.

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Abstract

The invention discloses a concrete in a mixed radius shale ceramisite lightweight aggregate structure. The concrete comprises the following ingredients in mixing proportion by weight (kg / m<3>): 420-500kg / m<3> of cement, 170-200kg / m<3> of water, 878kg / m<3> of dry sand, and 504kg / m<3> of ceramisite mixture comprising five ceramisites with different radii, wherein the ceramisite mixture is obtained by mixing the ceramisites respectively at the bulk densities of 490kg / m<3>, 570kg / m<3>, 610kg / m<3>, 780kg / m<3>, and 830kg / m<3> according to the mass ratio of 2:5:3:2:3. The invention also provides a preparation method of the concrete in the mixed radius shale ceramisite lightweight aggregate structure. By adopting the concrete and preparation method disclosed by the invention, the performance of the concrete is effectively improved, fluidity of a mixture is good, the aggregate does not float upwards, bearing structural strength requirements and construction requirements can be met, and in addition, thermal performance is high to meet thermal insulation requirements.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a mixed particle size shale ceramsite lightweight aggregate structure concrete and a preparation method thereof. Background technique [0002] Lightweight aggregate concrete has gone through nearly 40 years of research and application in my country. Looking at the application and development of lightweight aggregate concrete, its main use is limited to non-load-bearing structures that utilize its thermal insulation properties such as blocks and interior partition walls. . At the same time, the application of lightweight aggregate concrete in load-bearing structures is hindered due to the lack of systematic understanding of lightweight aggregate concrete by engineers. Therefore, it is necessary to have a structural lightweight aggregate concrete with high construction performance, good thermal insulation effect, and meeting the strength requirements, so that the majorit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B14/04
Inventor 杨伟军王鹏姜鹏霄
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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