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Lightweight high-strength concrete and preparation method thereof

A high-strength concrete, light-weight technology, applied in ceramic products, other household appliances, applications, etc., can solve the problems that the compressive strength of concrete is difficult to meet the construction requirements, increase the content of ceramic sand, and the strength of ceramic sand is low, and achieve light weight. , high strength, reducing the effect of bulk density

Inactive Publication Date: 2021-03-19
中建西部建设北方有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that the strength of pottery sand is not high, and pottery sand is a brittle material. When preparing concrete with lower bulk density and higher strength, it is necessary to increase the amount of pottery sand, resulting in The compressive strength of the concrete produced is difficult to meet the construction requirements

Method used

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  • Lightweight high-strength concrete and preparation method thereof
  • Lightweight high-strength concrete and preparation method thereof
  • Lightweight high-strength concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0040] The water reducer is made by mixing and stirring the following raw materials in parts by weight:

[0041] Water-reducing mother liquor 20kg, slump-preserving mother liquor 8kg, viscosity reducer 5kg, defoamer 0.3kg, retarder 1kg and water 50kg.

preparation example 2

[0043] Water-reducing mother liquor 25kg, slump-preserving mother liquor 13kg, viscosity reducer 7kg, defoamer 0.8kg, retarder 2kg and water 53kg.

[0044] Preparation example 2

[0045] Water-reducing mother liquor 30kg, slump-preserving mother liquor 18kg, viscosity reducer 10kg, defoamer 1.2kg, retarder 3kg and water 55kg.

Embodiment 1

[0048] A lightweight high-strength concrete made from the following raw materials in parts by weight:

[0049] 580kg of cement, 220kg of silica fume, 180kg of fly ash, 490kg of hollow glass microspheres, 150kg of ceramsite, 60kg of titanium boride particles, 5kg of polyamide fiber, 20kg of water reducing agent, and 90kg of water.

[0050] The silicon dioxide content in silica fume is 92%; the density of hollow glass microspheres is 350g / cm 3 The cylinder compressive strength of ceramsite is 5MPa; the particle size of titanium boride is 8 microns; the length of polyamide fiber is 10mm;

[0051] Lightweight high-strength concrete is prepared through the following steps:

[0052] S1: Mix cement, silica fume, fly ash, hollow glass microspheres and water in a mixer for 60 seconds to obtain ready-mixed concrete;

[0053] S2: Add ceramsite, titanium boride particles, fibers and water reducer to the ready-mixed concrete, and stir for 4-5 minutes to obtain evenly mixed ready-mixed co...

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Abstract

The invention relates to the technical field of concrete preparation, and particularly discloses lightweight high-strength concrete and a preparation method thereof. The lightweight high-strength concrete comprises the following components: cement, silica fume, fly ash, hollow glass beads, ceramsite, titanium boride particles, polyamide fibers, a water reducing agent and water. The preparation method comprises the following steps: 1, uniformly mixing cement, silica fume, fly ash, hollow glass beads and water to obtain premixed concrete; and 2, adding ceramsite, titanium boride particles, fibers and a water reducing agent into the premixed concrete, and stirring for 45 minutes to obtain the uniformly stirred lightweight high-strength concrete. The lightweight high-strength concrete can be used in the construction fields of super high-rise buildings, bridges and the like, and has the advantages of small volume weight, high compressive strength and stable working performance.

Description

technical field [0001] The application relates to the technical field of concrete preparation, more specifically, it relates to a lightweight high-strength concrete and a preparation method thereof. Background technique [0002] Ordinary concrete is rich in raw materials, high in compressive strength, economical and durable, and has been widely used in engineering construction. However, due to the weight of ordinary concrete, the transportation cost of the prepared concrete is relatively high, and the project cost is significantly increased. It is difficult to meet the needs of the construction industry. To meet the needs of development, lightweight high-strength concrete is produced. Lightweight high-strength concrete has the advantages of light weight and good seismic performance, and is widely used in high-rise buildings. [0003] In the related art, the application document with the application number 201711233051.9 discloses a lightweight low-shrinkage ultra-high perfo...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/08C04B111/40
CPCC04B28/04C04B2111/40C04B2201/20C04B2201/50C04B18/146C04B18/08C04B14/22C04B18/027C04B14/321C04B16/0691C04B38/08C04B2103/302
Inventor 胡宇博张凯峰罗作球王军孟刚王峰刘江非张旭姚源王敏童小根王佳敏
Owner 中建西部建设北方有限公司
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