A kind of composite material toughened ceramsite concrete and preparation method thereof

A technology of ceramsite concrete and composite materials, which is applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of seismic and impact resistance to be improved, and achieves improved micro stress-strain performance, easy processing , a wide range of effects

Active Publication Date: 2017-10-03
福建省东霖建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the seismic and impact resistance performance tests of the recycled aggregate concrete upper load-bearing structure still need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of activated wood powder fiber is as follows: take 45 kg of wood powder fiber at room temperature, stir in 136 L of 20 wt% sodium hydroxide aqueous solution for 36 h and then filter, wash the wood powder fiber with water until neutral; then, the wood powder The fiber was stirred in 90 L of 18 wt% hydrogen peroxide aqueous solution for 30 h, filtered and washed with water; then the wood powder fiber was added to a pH 8, 25 wt% Tween 20 aqueous solution for 3 h, stirred for 18 h and then filtered , washed with water, dried in vacuum at 61°C for 24 h before use;

[0036] The preparation method of modified silica nanotubes is as follows:

[0037] (1) Put 30 stainless steel balls with a diameter of 10 mm and 45 stainless steel balls with a diameter of 5 mm in two identical 5 L nylon tanks, then add 0.9 kg of silica nanotubes respectively, and then drop Add 90 ml of absolute ethanol and seal it with a nylon cover; put two ball mill jars into the ball m...

Embodiment 2

[0052] The preparation method of activated wood powder fiber is as follows: take 45 kg of wood powder fiber at room temperature, stir in 136 L of 20 wt% sodium hydroxide aqueous solution for 36 h and then filter, wash the wood powder fiber with water until neutral; then, the wood powder The fiber was stirred in 90 L of 18 wt% hydrogen peroxide aqueous solution for 30 h, filtered and washed with water; then the wood powder fiber was added to a pH 8, 25 wt% Tween 20 aqueous solution for 3 h, stirred for 18 h and then filtered , washed with water, dried in vacuum at 60°C for 24 h before use;

[0053] The preparation method of modified silicon dioxide nanotubes comprises the following steps:

[0054] (1) Put 30 stainless steel balls with a diameter of 10 mm and 45 stainless steel balls with a diameter of 5 mm in two identical 5 L nylon tanks, then add 0.9 kg of silica nanotubes respectively, and then drop Add 90 ml of absolute ethanol and seal it with a nylon cover; put two ball ...

Embodiment 3

[0068]The preparation method of activated wood powder fiber is as follows: take 45 kg of wood powder fiber at room temperature, stir in 136 L of 20 wt% sodium hydroxide aqueous solution for 36 h and then filter, wash the wood powder fiber with water until neutral; then, the wood powder The fiber was stirred in 90 L of 18 wt% hydrogen peroxide aqueous solution for 30 h, filtered and washed with water; then the wood powder fiber was added to a pH 8, 25 wt% Tween 20 aqueous solution for 3 h, stirred for 18 h and then filtered , washed with water, dried in vacuum at 62°C for 24 h before use;

[0069] The preparation method of modified silicon dioxide nanotubes comprises the following steps:

[0070] (1) Put 30 stainless steel balls with a diameter of 10 mm and 45 stainless steel balls with a diameter of 5 mm in two identical 5 L nylon tanks, then add 0.9 kg of silica nanotubes respectively, and then drop Add 90 ml of absolute ethanol and seal it with a nylon cover; put two ball m...

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Abstract

The invention belongs to the field of preparation of concrete, and in particular relates to composite material toughened ceramisite concrete and a preparation method thereof. The composite material toughened ceramisite concrete comprises the following components in parts by weight: 320-360 parts of cement, 40-80 parts of lithium slagpowder, 20-40 parts of silica fume, 700-900 parts of recycled coarse aggregates, 500-800 parts of ceramisites, 3-4 parts of a water reducing agent, 100-200 parts of water, 10-20 parts of polyacrylate, 20-30 parts of a toughening composite material, 0.05-0.1 part of sodium gluconate, and 10-15 parts of triethanolamine, wherein the toughening composite material is prepared from the following raw materials in parts by weight: 1.2-1.8 parts of modified silicon dioxide nanotubes, 22-28 parts of a styrene-butadiene-styrene block copolymer, 46-50 parts of activated wood powder fibers, 3.5-5 parts of a silane coupling agent, 3.0-3.5 parts of a solubilizing agent, 4-6 parts of a filler and 180-220 parts of water. The concrete has good toughness, isotropy, fatigue resistance, compactness, crack resistance, shock resistance and permeability resistance, and is a high-performance concrete toughening material, and the 28-day compression strength of the prepared concrete can reach 30-60MPa, so that the concrete is suitable for building bearing structures.

Description

technical field [0001] The invention belongs to the field of concrete preparation, and in particular relates to a composite material toughened ceramsite concrete and a preparation method thereof. Background technique [0002] The General Office of the State Council's "Notice on Several Opinions on Promoting the Modernization of the Housing Industry and Improving Housing Quality" stipulates that coastal cities and other cities with scarce land resources have banned the use of solid clay bricks since June 2000 to protect my country's limited land resources. The development of shale ceramsite, fly ash ceramsite, etc. that use no soil or less soil is conducive to the protection of land resources and the promotion of ecological civilization. In foreign countries, ceramsite concrete has been widely used in building blocks and large wall panels, even in load-bearing structures, and the economic benefits are very obvious. Compared with the aerated block which replaces the clay bric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B14/06C04B18/02C04B18/14C04B18/16C04B18/26C04B24/10C04B24/12C04B24/26C04B24/42
CPCC04B20/023C04B20/026C04B28/02C04B18/146C04B18/14C04B18/16C04B18/023C04B24/2641C04B24/10C04B24/122C04B14/062C04B24/26C04B18/26C04B24/42Y02W30/91
Inventor 陈贤玻许江源赵福龙
Owner 福建省东霖建设工程有限公司
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