Lightweight aggregate pretreatment method and its device

A pretreatment device and light aggregate technology, applied in clay preparation devices, cement mixing devices, chemical instruments and methods, etc., can solve the problems of inability to maintain free water in concrete mixture, poor pumpability of light aggregate concrete, light aggregate The problem of slow material pretreatment speed is solved, and the effect of improving pumping construction performance, improving pretreatment efficiency, and good workability of pumping is achieved.

Inactive Publication Date: 2009-11-11
北京东方建宇混凝土科学技术研究院有限公司 +2
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Problems solved by technology

[0004] The object of the present invention is to provide a light aggregate pretreatment method and its device, to solve the problem that the light aggregate pretreatment speed is too slow, the efficiency is low, the water absorption of light aggregate is large, and the free water in the concrete mixture cannot be maintained. Technical issues of water volume, poor pumpability of light aggregate concrete

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  • Lightweight aggregate pretreatment method and its device
  • Lightweight aggregate pretreatment method and its device
  • Lightweight aggregate pretreatment method and its device

Examples

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Embodiment

[0018] Example: Preparation of Light Aggregate

[0019] Serial number

[0020] In this light aggregate pretreatment method, the light aggregate is shale ceramsite, clay ceramsite, natural pumice particles or natural vermiculite particles, which is characterized by the following steps:

[0021] Step 1, pre-wetting the light aggregate, putting the light aggregate into the container and adding water to make the water absorption rate of the light aggregate 60%-80%; the light aggregate pre-wetting is a pressurized pre-wetting method. The above-mentioned pressurized pre-wetting method is to put the light aggregate into a light aggregate concrete pretreatment device, which is a closed pressure vessel whose volume can be customized according to needs.

[0022] See Figure 1-3 The above-mentioned closed pressure vessel is in the shape of a tank, and the tank body 4 of the closed pressure vessel is supported on the chassis 1 of the concrete mixer truck. A ring plate 3 is welded aro...

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Abstract

A light aggregate pretreatment method and device thereof. First, the light aggregate is subjected to pressurized pre-wet treatment, and the light aggregate is put into the light aggregate pretreatment device to add water. The light aggregate pretreatment device is a closed pressure vessel. The time of pressurized pre-wet is 30-120min, and the pressure of pressurized pre-wet is 5-8MPa, so that the water absorption rate of light aggregate can reach 60%-80%; then, the light aggregate after pre-wet treatment is subjected to shell-making treatment, According to the amount of 50-100kg cement added to 1m3 light aggregate, spread dry cement on the light aggregate without free water and pre-wet, and stir for 90min-180min while spreading, forming an impermeable hard shell on the surface of light aggregate. It solves the technical problems that the light aggregate pretreatment speed is too slow, the efficiency is low, the water absorption of the light aggregate is large, the free water in the concrete mixture cannot be maintained, and the pumpability of the light aggregate concrete is poor.

Description

(1) Technical field [0001] The invention relates to a pretreatment method and device for preparing concrete materials. (2) Background technology [0002] Lightweight, high-strength, and durability are the development direction of concrete technology. The development of lightweight aggregate concrete is the main way to reduce the weight of the structure and make the concrete develop towards light-weight and high-strength. Lightweight aggregate concrete has been researched and applied in my country for nearly 40 years. Due to the limitations of technology, economy and construction concepts, the application space and scope of this technology are limited. In recent years, the development of the national economy has led to the rapid development of the construction industry, especially the development of high-rise, super high-rise buildings, offshore construction, large-span buildings and intelligent buildings. Lightweight aggregate concrete has light weight and good thermal insulation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28C5/46B28C5/42
Inventor 路来军马雪英王安岭
Owner 北京东方建宇混凝土科学技术研究院有限公司
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