High-strength self-compaction thermal-insulation concrete

A thermal insulation concrete and self-compacting technology, applied in the field of concrete materials, can solve the problems of floating and segregation of lightweight aggregates, and achieve the effect of reducing the cost of raw materials, avoiding delamination and segregation, and achieving good construction performance.

Inactive Publication Date: 2015-03-11
FUJIAN JIANGXIA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-strength self-compacting thermal insulation concrete, which has light weight, high strength, high thermal insulation performance and self-compacting performance during pouring, which can solve the problem of floating of light aggregates in traditional high-strength ther

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of spherical high-strength ceramsite comprises the following steps:

[0026] 1) Using sea mud with Fujian characteristics, its chemical composition is identified, and the mass fraction of each chemical composition in sea mud is: SiO 2 54.2%, AL 2 o 3 18.2%, Fe 2 o 3 8.4%, CaO 2.5%, MgO 3.55%, TiO 2 0.68%, Na 2 O 1.98%, K 2 O 1.66%, Cl - 1.07%, loss on ignition (IL) is 7.76%;

[0027] 2) Humidity adjustment of sea mud, that is, first take part of the sea mud and place it in a drying box to dry it completely, then determine the density of the completely dried sea mud, and then dry the sea mud used, when its density is 1.1 times the density of the completely dried sea mud, Its water content is 10%;

[0028] 3) Homogenize the sea mud and extrude it into raw meal balls with a particle size of 13-16 mm with a ball extrusion machine;

[0029] 4) According to SiO in sea mud 2 、AL 2 o 3 and other refractory ingredients and Fe 2 o 3 , C...

Embodiment 2

[0034] The preparation method of spherical high-strength ceramsite comprises the following steps:

[0035] 1) Using sea mud with Fujian characteristics, its chemical composition is identified, and the mass fraction of each chemical composition in sea mud is: SiO 2 54.2%, AL 2 o 3 18.2%, Fe 2 o 3 8.4%, CaO 2.5%, MgO 3.55%, TiO 2 0.68%, Na 2 O 1.98%, K 2 O 1.66%, Cl - 1.07%, IL7.76%;

[0036] 2) Humidity adjustment of sea mud, that is, first take part of the sea mud and place it in a drying box to dry it completely, then determine the density of the completely dried sea mud, and then dry the sea mud used, when its density is 1.12 times the density of the completely dried sea mud, Its water content is 12%;

[0037] 3) Homogenize the sea mud and extrude it into raw meal balls with a particle size of 13-16 mm with a ball extrusion machine;

[0038] 4) According to SiO in sea mud 2 、AL 2 o 3 and other refractory ingredients and Fe 2 o 3 , CaO, MgO, TiO 2 、Na 2...

Embodiment 3

[0043] The preparation method of spherical high-strength ceramsite comprises the following steps:

[0044] 1) Using sea mud with Fujian characteristics, its chemical composition is identified, and the mass fraction of each chemical composition in sea mud is: SiO 2 54.2%, AL 2 o 3 18.2%, Fe 2 o 3 8.4%, CaO 2.5%, MgO 3.55%, TiO 2 0.68%, Na 2 O 1.98%, K 2 O 1.66%, Cl - 1.07%, IL 7.76%;

[0045] 2) Humidity adjustment of sea mud, that is, first take part of the sea mud and place it in a drying box to dry it completely, then determine the density of the completely dried sea mud, and then dry the sea mud used, when its density is 1.15 times the density of the completely dried sea mud, Its water content is 15%;

[0046] 3) Homogenize the sea mud and extrude it into raw meal balls with a particle size of 13-16 mm with a ball extrusion machine;

[0047] 4) According to SiO in sea mud 2 、AL 2 o 3 and other refractory ingredients and Fe 2 o 3 , CaO, MgO, TiO 2 、Na ...

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Abstract

Disclosed high-strength self-compaction thermal-insulation concrete is prepared by taking a self-compaction concrete technology as a basis, taking sea-mud-texturized high-performance spherical high-strength ceramic particle as an aggregate and scientifically mixing with cement, fly ash, graded sand, water, an efficient water reducer and cellulose ether. The obtained high-strength self-compaction thermal-insulation concrete has the dry apparent density of 1200-2000 Kg/m<3>, the 28-day compressive strength of 15-60 MPa, the heat conduction coefficient of 0.15-0.5 W/(m*K), the slump flow of 650-750 mm, the slump flow time of 3-4 s and the slump of 250 mm or more, also has light weight, high strength, high thermal-insulation performance and self-compaction performance during pouring, is capable of solving the problems that lightweight aggregates float upwards, are separated when being pumped and the like during pouring vibration of conventional high-strength thermal-insulation concrete, and is widely applied to bearing and non-bearing walls, floorslabs, roof boards, wallboards and other in-situ casted and prefabricated parts in energy-saving buildings.

Description

technical field [0001] The invention belongs to the field of concrete materials, and in particular relates to a high-strength self-compacting heat-preservation concrete prepared by using sea clay high-performance spherical ceramsite as an aggregate. Background technique [0002] In recent years, with the improvement of building energy-saving requirements, domestic and foreign research on non-load-bearing insulation concrete has begun to turn to load-bearing insulation integrated concrete research. At the beginning of this century, Li Zhu and Zhang Zeping began to study the application of inorganic lightweight aggregate mainly composed of vitrified microbeads in load-bearing thermal insulation concrete (vitrified microbead thermal insulation concrete (ZL 200610012726.2), inorganic thermal insulation load-bearing concrete (ZL 200910015208.9)), and make high-strength thermal insulation concrete gradually applied in engineering. However, the existing high-strength thermal insul...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B14/02C04B18/08C04B24/38
CPCY02W30/91
Inventor 代学灵郑建岚蒋国平
Owner FUJIAN JIANGXIA UNIV
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