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LC40 lightweight aggregate concrete and preparation method thereof

A technology of lightweight aggregate concrete and concrete mixer, which is applied in the field of concrete preparation, can solve the problems of low strength of all-light concrete, inability to guarantee the thermal insulation effect of all-light concrete, and inability to effectively use it, so as to achieve enhanced bonding effect and enhanced bonding relationship, the effect of improving structural strength

Inactive Publication Date: 2020-12-22
武汉鑫云海混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] But for lightweight aggregate concrete, there is a big contradiction between its thermal insulation performance and its own strength. Since the strength depends on the density of the light aggregate concrete, the greater the density and the greater the self-weight, the greater the strength will be, but When the density is higher, the thermal conductivity will also be greater, so that the insulation effect of all-light concrete cannot be guaranteed. Under such problems, the strength of most all-light concrete will be low, and it cannot be effectively used in buildings that require strong support. Within the structure, there is room for further improvement

Method used

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  • LC40 lightweight aggregate concrete and preparation method thereof
  • LC40 lightweight aggregate concrete and preparation method thereof

Examples

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Embodiment 1

[0030]The LC40 lightweight aggregate concrete disclosed in the embodiments of the present application includes shale ceramsite, fine sand, cement, water reducing agent, mineral admixture and water. The shale ceramsite uses crushed shale ceramsite; mineral The admixtures include fly ash, mineral powder, and silica fume. The specific weight parts of each component are shown in Table 1.

[0031]In addition, the shale ceramsite used adopts continuous gradation, and the particle size of shale ceramsite is 5-10mm. The solid content of the used water reducing agent is 20%, and the water reducing rate is greater than 30%.

[0032]The preparation method of the LC40 lightweight aggregate concrete includes the following steps:

[0033]S1: Put cement, mineral admixture, shale ceramsite, water, and water reducing agent into the concrete mixer for mixing to obtain the initial mixed material;

[0034]S2: Put the shale ceramsite into the initial mixed material obtained in S1 for mixing to obtain LC40 lightweig...

Embodiment 2-6

[0039]The difference from Example 1 is that the weight parts of each component included are different, and the detailed values ​​are shown in Table 1.

Embodiment 7

[0041]The difference from Example 3 is that the shale ceramsite used in this embodiment is a conventional shale ceramsite that is not crushed shale ceramsite.

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Abstract

The invention discloses LC40 light-weight aggregate concrete, and belongs to the field of concrete preparation. According to the technical scheme key points, the LC40 light-weight aggregate concrete comprises the following components in parts by weight: 900-1160 parts of shale ceramisite; 600-780 parts of fine sand; 310-380 parts of cement; 8.5-10.2 parts of a water reducing agent; 230-285 parts of a mineral admixture; and 135-165 parts of water. According to the scheme, the shale ceramisite is rougher, so that the shale ceramisite has a larger surface area and stronger water absorption capacity, the bonding capacity is stronger when the shale ceramisite is combined with cementing materials such as cement, and the shale ceramisite is stably connected with other cementing materials and finesand around the shale ceramisite, finally, the compressive strength of the formed concrete is improved, and the compressive bearing effect of the finally obtained lightweight aggregate concrete is effectively improved.

Description

Technical field[0001]This application relates to the technical field of concrete preparation, in particular to an LC40 lightweight aggregate concrete.Background technique[0002]LC concrete, also known as lightweight aggregate concrete, is made of lightweight coarse aggregate and lightweight fine aggregate. It is widely used in industrial and civil buildings and other projects, which can reduce the weight of the structure and improve the seismic resistance of the structure. Performance; saving material consumption; improving the efficiency of component transportation and hoisting; reducing foundation load and improving building functions (thermal insulation and fire resistance, etc.) and other benefits.[0003]However, for lightweight aggregate concrete, there is a big contradiction between its thermal insulation performance and its own strength. Because the strength depends on the density of all-light concrete, the greater the density and the greater the weight, the greater the strengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B40/00
CPCC04B28/00C04B40/0028C04B2201/50C04B18/023C04B14/06C04B2103/302C04B18/08C04B18/141C04B18/146
Inventor 李亚林李鑫磊刘雄飞程茂山盛夏斌陈前李翔
Owner 武汉鑫云海混凝土有限公司
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