High-strength lightweight aggregate concrete based on arch shell-shaped interface region and preparation method thereof

A technology of light aggregate concrete and interface zone, which is applied in the field of building materials, can solve the problems of increasing the weight and cost of light aggregate concrete, and achieves improved resistance to chloride ion penetration, improved later strength and frost resistance, and workability. Good results

Active Publication Date: 2018-05-04
ANHUI UNIVERSITY OF ARCHITECTURE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main measures for high strengthening of lightweight aggregate concrete include high strengthening of light aggregate and medium and low water absorption, and the addition of highly active admixtures such as silica fume and fly ash. While improving performance, it also increases the weight and cost of light aggregate concrete

Method used

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  • High-strength lightweight aggregate concrete based on arch shell-shaped interface region and preparation method thereof
  • High-strength lightweight aggregate concrete based on arch shell-shaped interface region and preparation method thereof
  • High-strength lightweight aggregate concrete based on arch shell-shaped interface region and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The raw materials were weighed according to the mix ratio in Table 1 to prepare CL50 concrete, which was used to prepare high-strength lightweight aggregate concrete based on the arch shell-shaped interface area. The performance test results are shown in Table 2, Table 3 and Table 4.

[0027] Table 1 CL50 high-strength lightweight aggregate concrete mix ratio Unit: kg / m 3

[0028] serial number

cement

fly ash

Silica fume

light aggregate

river sand

Superplasticizer

Tackifier

air entraining agent

water

Example 1

450

40

50

610

640

7.20

0.225

0.0216

155

Example 2

450

40

50

590

670

7.20

0.225

0.0216

155

Example 3

459

54

27

610

640

7.34

0.230

0.0220

155

Example 4

476

54

10

610

640

7.62

0.238

0.0229

155

Example 5

450

40

50

610

640

7.20

0.225

0.0216

170

[0029]...

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PUM

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Abstract

The invention belongs to the field of building materials, and concretely relates to a high-strength lightweight aggregate concrete based on an arch shell-shaped interface region and a preparation method thereof. The high-strength lightweight aggregate concrete is prepared from the components: 400 to 500 kg/m<3> of cement, 40 to 80 kg/m<3> of pulverized fuel ash, 10 to 60 kg/m<3> of silica fume, 520 to 640 kg/m<3> of lightweight aggregate, 600 to 800 kg/m<3> of river sand, 6 to 8 kg/m<3> of high-efficient water reducer, 0.2 to 0.3 kg/m<3> of tackifier, 18 to 24 g/m<3> of air entraining agent, and 140 to 170 kg/m<3> of water. The high-strength lightweight aggregate concrete provided by the invention mainly adopts a spheroidal lightweight aggregate as an aggregate, and an internal curing effect and an arch shell interface effect of a prewet spheroidal lightweight aggregate are utilized, so that the lightweight aggregate concrete has performances of light weight, high strength, impermeability and corrosion resistance, the workability of the high-strength lightweight aggregate concrete is better, the lightweight aggregate is not easy to float upwards, and the concrete is high in strength, good in endurance quality and not easy to crack.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-strength lightweight aggregate concrete based on an arch-shaped interface region and a preparation method thereof. Background technique [0002] With the development of modern building structures to high-rise and long-span, lightweight, high-strength, high-durability and sustainable development have become the development direction of concrete materials. Therefore, lightweight high-strength concrete with good workability, volume stability and durability has very broad development prospects. At present, the main measures for high strengthening of lightweight aggregate concrete include high strengthening of light aggregate and medium and low water absorption, and the addition of highly active admixtures such as silica fume and fly ash. While improving performance, it also increases the weight and cost of light aggregate concrete. Therefore, it is the key to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/40C04B111/20
CPCC04B28/04C04B2111/20C04B2111/40C04B2201/50C04B18/08C04B18/146C04B14/02C04B14/068C04B2103/302C04B2103/44C04B2103/304
Inventor 张高展丁庆军向玮衡李洋张晓佳杨军魏琦
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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