Lightweight aggregate binder formulation

A lightweight aggregate and clay technology, applied in building thermal insulation materials, building components, buildings, etc., can solve problems such as poor storage effect of binders

Inactive Publication Date: 2004-01-28
BST HLDG PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Moreover, the aforementioned binder has poor storage effect under long-term extreme temperature conditions and is prone to sedimentation

Method used

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  • Lightweight aggregate binder formulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] binder

[0033] distilled water

[0034] Any chemical substance listed in the above formula can be replaced by a compatible chemical substance with similar properties, and the relevant dosage can be adjusted accordingly by a skilled formulator according to the content disclosed in this manual.

Embodiment 2

[0036] Binder preparation

[0037] The binder formulations of the present invention are preferably formed by an "in-line" emulsification process according to the following steps:

[0038] 1. Add air-entraining agent "Micro-Arie 940", desired fragrance "Eternal" and antimicrobial agent sodium o-phenylphenate ("opp") to distilled water to make a soap solution. The soap was circulated for 25 minutes while warming to 35°C.

[0039] 2. Then, add Volclay(R) fine gel into the soap solution at a slow rate of about 10 kg / min.

[0040] 3. Next, disperse the red oxide into the mixture at a rate of about 10 kg / min.

[0041] 4. The mixture was sheared in a high shear mill while adding 170 grade bitumen at 195°C at a rate of about 1500 kg / hr.

[0042] In the above method, the exact order of addition when preparing the composition is extremely important in obtaining the water-in-oil emulsion structure and providing useful properties to the coating composition. Those skilled in the art wi...

Embodiment 3

[0044] Physical Structure of Emulsion

[0045] The preferred physical structures of the preferred natural anionic oxides in the present invention can be classified as "acicular" or "spherical". "Acicular" oxides retain more water and, when made into pastes, are drier and therefore more viscous than the corresponding "spherical" oxides. Acicular oxides are preferred, but the oxides can be "acicular" or "spherical".

[0046] In the present invention, the droplet diameter of the emulsion is about 25 microns, which is much larger than the droplet diameter (about 5 microns) in a typical emulsion; meanwhile, the emulsion droplets contain suspended oxides.

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PUM

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Abstract

The invention relates to a thermally stable composition, and methods for the preparation thereof, for use in the manufacture of a lightweight aggregate including a continuous bituminous phase, a discontinuous aqueous phase, an anionic oxide suspended in the discontinuous aqueous phase and at least one emulsifying agent. The anionic oxide may be a naturally occurring metal oxide having a needle-like crystal structure such as red oxide (CuO) or yellow oxide. The continuous bituminous phase may be for example grade 170 bitumen or crude oil, hydrocarbons or mixtures thereof. The emulsifying agent may be a clay emulsifier such as sodium bentonite, or a hydrous aluminium silicose or montmorillonite clay. The invention also relates to lightweight aggregate particles coated with such compositions and building materials formed from the lightweight aggregate in combination with a cementitious material.

Description

technical field [0001] The present invention relates to aggregates suitable for lightweight concrete and lightweight concrete comprising aggregates. Background technique [0002] The preparation of low density concrete is well known by adding lightweight aggregates such as vermiculite, cork, slag, asbestos, bagasse, etc. to hydraulic binders such as cement / sand / water mixtures. The addition of lightweight aggregates to the binder, especially foam particles such as polystyrene, can greatly improve the performance of low-density concrete. [0003] However, cementitious materials do not readily bond to these lightweight aggregates, which are often highly hydrophobic. Due to its hydrophobicity and low density characteristics, polystyrene beads tend to float to the concrete surface when they set. To solve this problem, various binders have been used to facilitate the incorporation of polystyrene foam particles into lightweight aggregates. These additives include bituminous prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/10C08L95/00
CPCC08L95/00C04B20/1044C04B16/08C04B20/1055C04B20/1066C08L2666/74
Inventor J·迪纳基施
Owner BST HLDG PTY LTD
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