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Foam concrete formula and preparation method and application thereof

A foamed concrete and formula technology, applied in the field of foamed concrete, can solve the problems of affecting the thermal insulation performance of foamed concrete, affecting the porosity of foamed concrete, low foam stability, etc., so as to improve the adhesion effect, improve the water penetration resistance, and improve the foam stability. high sex effect

Pending Publication Date: 2020-12-04
南通市展成商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned production method often encounters the problem that the prepared foam has low stability, and the foam is easily broken during the mixing process with the slurry, which affects the porosity in the foamed concrete, and then affects the thermal insulation performance of the foamed concrete.

Method used

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  • Foam concrete formula and preparation method and application thereof
  • Foam concrete formula and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A kind of foam concrete formula and preparation method:

[0068] S1. Add 1900g TPU particles, 400g tea saponin, 100g octadecyldimethyl benzyl ammonium chloride, 100g polyacrylamide, 50g hydroxymethyl starch ether and 5000g water into the first mixing tank, and use a mixer to Stir at a speed of 450r / min until bubbles are generated, and continue stirring for 5 minutes to obtain a foam solution;

[0069] S2. Add 5000g of fly ash, 10000g of shale ceramsite and 5000g of expanded vermiculite into the second mixing tank, stir with a mixer at a speed of 80r / min for 5min, then add 10000g of cement, and continue stirring for 2min to obtain a concrete slurry;

[0070] S3. Add the foam solution obtained in step S2 into the second mixing tank, mix the foam solution with the concrete slurry, stir with a mixer at a speed of 80 r / min for 1 min, and set aside.

Embodiment 2～ Embodiment 5

[0072] The difference between Embodiment 2 to Embodiment 5 and Embodiment 1 lies in the proportioning of raw materials, the stirring speed and the stirring time, as shown in Table 1.

[0073] Table 1

[0074] Example 2 Example 3 Example 4 Example 5 cement (g) 13000 11500 10500 11000 Shale ceramsite (g) 15000 12000 13125 11330 Expanded vermiculite (g) 5000 4000 4375 5670 Fly ash (g) 4000 3000 3800 3500 TPU particles (g) 800 3000 1000 1200 Tea saponin (g) 400 600 1000 500 Octadecyl dimethyl benzyl ammonium chloride (g) 200 200 200 200 Polyacrylamide (g) 200 300 400 200 Hydroxymethyl starch ether (g) 30 40 20 30 water (g) 8000 6500 5500 5500 Stirring speed in S1 (r / min) 450 500 500 450 Stirring time in S1 (min) 5 8 10 8 Stirring time before adding cement in S2 (min) 8 8 5 5 Stirring time after adding cement in S2 (min) 3 4 4 3 Stirring ...

Embodiment 6

[0076] The only difference between this example and Example 5 is that before step S1, a pretreatment step of TPU particles is also included. Oxygen was pre-mixed, then 1200g TPU particles, 1500g sodium dodecylbenzenesulfonate, 60g chloroplatinic acid and 10000g water were added to the reaction kettle, stirred at room temperature for 10min, and tridecafluoro was added dropwise into the reaction kettle The mixture of octyltrimethoxysilane and octamethylcyclotetrasiloxane, add dropwise within 1h, then stir at 60°C for 1h, then filter, collect the solid, wash the solid with water, and dry in an oven at 60°C 1h, the pretreated TPU particles were obtained.

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Abstract

The invention discloses a foam concrete formula and a preparation method and application thereof, and the foam concrete formula comprises the following raw materials by weight: 100 to 130 parts of cement; 150 to 200 parts of a lightweight aggregate; 30 to 50 parts of fly ash; 50 to 80 parts of water; 8 to 30 parts of TPU particles; 6 to 16 parts of a composite foaming agent; 0.2 to 0.6 part of a thickening agent; the preparation method comprises the following steps: S1, mixing and stirring the TPU particles, the composite foaming agent, the thickening agent and the water until bubbles are generated, and continuously stirring to obtain a foam solution; S2, mixing and stirring the fly ash and the lightweight aggregate, then adding the cement, and continuously stirring to obtain concrete slurry; S3, mixing and stirring the foam solution and concrete slurry for later use; the foam concrete disclosed by the invention can be used for manufacturing an external wall insulation board and has the advantage of good insulation performance.

Description

technical field [0001] The invention relates to the field of foam concrete, more specifically, it relates to a formula of foam concrete and its preparation method and application. Background technique [0002] Foamed concrete is a lightweight concrete material with good compatibility with other building materials. Therefore, foamed concrete is widely used. The characteristic of foamed concrete is its porous structure, which makes foamed concrete have thermal insulation, heat insulation, fire resistance, sound insulation and frost resistance. characteristics, and the durability of foam concrete is good, and it does not consume a lot of petroleum resources, making the production of foam concrete environmentally friendly. [0003] The production method of foam concrete is generally to prepare the foam agent aqueous solution into foam by mechanical means, and then add the foam to the slurry containing cement and aggregate, etc., and mix and stir to make the concrete aggregate co...

Claims

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Application Information

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IPC IPC(8): C04B28/04E04B1/76E04B1/80C04B38/10C04B111/27
CPCC04B28/04C04B38/106C04B40/0046C04B2111/27C04B2201/20C04B2201/32C04B2201/50E04B1/762E04B1/80C04B16/082C04B24/38C04B24/121C04B24/2652C04B24/383C04B22/002C04B18/08C04B18/025C04B14/204
Inventor 征波
Owner 南通市展成商品混凝土有限公司
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