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A kind of high-performance foam lightweight soil foaming agent and preparation method thereof

A technology of foam light soil and foaming agent, which is applied in the application field of foam light soil in highway engineering, can solve the problems of wide foam size distribution, unstable foam group density, large foam settlement distance in 1h, etc., and reaches the applicable scope. Wide, reduce the water consumption of unilateral, the effect of long half-life time

Active Publication Date: 2019-11-12
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, commercially available products are sensitive to temperature. When the temperature is higher than 40°C, the half-life time is short, the standard foam 1h settling distance is large, the density of the foam group is unstable, and the foam size distribution range is wide.

Method used

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  • A kind of high-performance foam lightweight soil foaming agent and preparation method thereof
  • A kind of high-performance foam lightweight soil foaming agent and preparation method thereof
  • A kind of high-performance foam lightweight soil foaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) mix ratio

[0036] Table 1 is the mix ratio of cement slurry

[0037]

[0038] Remarks: The cement is 42.5 ordinary Portland cement, and the water is drinking water.

[0039] (2) Test method

[0040] Considering the impact of cement slurry strong alkali and calcium-rich ions on foam stability, the product of the present invention carries out foam stability evaluation by improving the vibration method, and the test uses 300mL alkaline water (1: 30 cement slurry filter solution) and 10mL foaming Mix the agent, pour it into a 1000mL measuring cylinder, shake it 30 times to generate foam, record the initial foam height H, and when the foam height decreases to 1 / 2H, record the time t used, and use the foam half-life time to measure the foam stability.

[0041]A high-performance foam lightweight soil foaming agent, consisting of the following components by weight percentage: 27.5% of water, 15% of sodium lauryl sulfate, 5% of sodium lauryl sulfate, 10% of lauryl alky...

Embodiment 2

[0052] A high-performance foam lightweight soil foaming agent, composed of the following components by weight percentage: water 27.5%, sodium lauryl sulfate 20%, fatty alcohol polyoxyethylene ether (AE0-9) 10%, solid content 40% %Polycarboxylate superplasticizer 20%, sodium gluconate 15%, cocamidopropyl sulfobetaine 6%, polyacrylamide (yin) 0.5%, phthalocyanine green 1%. Measure the half-life time of product of the present invention under 15 ℃, 30 ℃, 45 ℃ and 60 ℃ environment by improved vibration method, simultaneously, form foam (foam mass density at 50kg / m2) with foaming machine foaming 3 ±3kg / m 3 ), mix the foam and the cement slurry evenly according to the volume dosage described in Table 1, and measure the performance of the foam light soil.

[0053] A preparation method of a high-performance foam lightweight soil foaming agent, comprising the following steps:

[0054] Step 1: It consists of the following components by weight percentage: 27.5% of water, 20% of sodium l...

Embodiment 3

[0064] A high-performance foam lightweight soil foaming agent, composed of the following components by weight percentage: 27.5% water, 20% secondary alkyl sodium sulfate, 10% lauryl alkyl glycoside, 40% solid content polycarboxylic acid high-efficiency Superplasticizer 15%, Sodium Gluconate 13%, Cocamidopropyl Hydroxysultaine 8%, Coconut Oil Fatty Acid Diethanolamide 5.5%, Phthalocyanine Green 1%. Measure the half-life time of product of the present invention under 15 ℃, 30 ℃, 45 ℃ and 60 ℃ environment by improved vibration method, simultaneously, form foam (foam mass density at 50kg / m2) with foaming machine foaming 3 ±3kg / m 3 ), mix the foam and the cement slurry evenly according to the volume dosage described in Table 1, and measure the performance of the foam light soil.

[0065] A preparation method of a high-performance foam lightweight soil foaming agent, comprising the following steps:

[0066] Step 1: It consists of the following components by weight percentage: 27.5...

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Abstract

The invention discloses a high-performance foam light soil foaming agent and a preparation method thereof. The high-performance foam light soil foaming agent is suitable for ordinary Portland cement,wherein the high-performance foam light soil foaming agent comprises the following components in percentage by mass: 10 to 50 percent of water, 10 to 30 percent of an anionic surfactant, 5 to 20 percent of a non-ionic surfactant, 10 to 50 percent of a water reducer, 5 to 20 percent of a retarder, 5 to 10 percent of a foam stabilizer, 2 to 8 percent of a thickening agent and 0.5 to 2 percent of a coloring agent. The high-performance foam light soil foaming agent has high applicability with cement, a mineral additive and an additive; the formed foam is uniform, exquisite and strong alkali-resistant and has long half-life period; the foam light soil formed by mixing cement thin pulp and the foam is controllable in flow value and small in shrinkage deformation; and the quality and the durability of the foam light soil filling body such as a bridge table back, a soft soil roadbed, road widening and slope protection are guaranteed.

Description

technical field [0001] The invention belongs to the application field of foam light soil in highway engineering, and in particular relates to the application of foam light soil in backfilling of bridge head and abutment back, soft foundation treatment, road widening, side slope protection and the like. Background technique [0002] The conventional filling of the back of the bridge head and abutment in China has caused serious problems such as bridge head jumping and high maintenance costs, which affect safe driving and long-term road life. The cast-in-place foam lightweight soil has the characteristics of lightness, verticality, high fluidity, bulk density and strength adjustable, and convenient construction. It is used for backfilling of the abutment, which can greatly alleviate the differential settlement between the bridge (culvert) and the roadbed The change gradient of the bridge base makes the change of differential settlement between bridge foundations slow and unifo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B24/32C04B103/42
CPCC04B40/0039C04B2103/42C04B22/002C04B24/16C04B24/38C04B2103/302C04B24/10C04B24/2652C04B24/128C04B24/32C04B24/124
Inventor 李立辉李刚许兵张梅玲韩根生田波刘礼辉侯荣国李思李权磊何哲谢晋德
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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