Quick coagulation flocculant for anti-washout concrete under water

A concrete and flocculant technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of prolonged coagulation time, insufficient anti-dispersion performance of underwater pouring mixture, and inability to meet the rapid construction of underwater concrete Engineering requirements and other issues, to achieve excellent filling, excellent anti-dispersion, reduce water pollution effect

Inactive Publication Date: 2010-04-21
CNPC RES INST OF ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The existing flocculants for underwater non-dispersible grouting mixes use cellulose-based flocculants, polysaccharide polymer-based flocculants, and methylcellulose flocculants. The disadvantage is that the underwater pouring mixes are resistant to dispersion The performance is insufficient, the setting time is obviously prolonged, and it cannot meet the engineering requirements of rapid construction of underwater concrete

Method used

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  • Quick coagulation flocculant for anti-washout concrete under water

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Embodiment 1～3

[0020]

[0021] Among them, the viscosity of methylcellulose in component A (mPa.s, 2% solution, 20°C) is 100,000, the pH value (1% solution at 25°C) is 7.2, and the gel temperature (°C) is 50.0-55.0; The acid-based water reducer is the sulfamate powder water reducer produced by Tianjin Yanshun Building Materials Co., Ltd.; the lignosulfonate is wood calcium, its lignin content is 96.5%, and the water insoluble matter is 1.2%. The content of zeolite is ≤13%, and the pH is 4.0-6.0; the fly ash used is a product above grade 2 provided by Tianjin Junliangcheng Power Plant, and the 45μm sieve ≤12%; the 45μm sieve of zeolite powder≤15%; B The silica fume used in the components is dense silica fume, and the sieve residue of 45 μm is ≤0.01%.

[0022] After the fast setting flocculant is added to the underwater non-dispersible concrete, the anti-dispersion performance of the concrete is significantly improved, especially the setting time of the concrete is significantly shortened, ...

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Abstract

The invention relates to a quick-set flocculant used for underwater-nondispersed concrete, which is mainly prepared from component A and component B, and the weight ratio between the component A and the component B is 1: 0.2-0.8, wherein, the component A consists of 1 portion by weight of methylcellulose, 1.0-1.5 portions by weight of sulfamic acid series water reducer, 0.2-0.5 portion by weight of lignosulfonate, 0.5-3 portions by weight of fly ash and 1-3 portions by weight of zeolite powder; while the component B consists of 0.3-2 portions by weight of calcium formate, 1-2.5 portions by weight of siliceous dust and 0.5-1.5 portions by weight of calcium metasilicate. The quick-set flocculant used for underwater-nondispersed concrete of the invention can cause underwater grouting mixtureto have excellent dispersing resistance, and auto-leveling property, and can reduce the water pollution in pouring underwater grouting mixture, with the solidification time for the construction of underwater nondispersed concrete adjusted from 15 minutes to 10 hours, and has high strength and can keep pumping capacity.

Description

technical field [0001] The invention relates to a flocculant for underwater non-dispersible concrete, in particular to a fast-setting flocculant for underwater non-dispersible concrete. Background technique [0002] Flocculant for underwater non-dispersible concrete, used for rapid underwater pouring of mortar, clean slurry and concrete mixture. [0003] CN98124830.6 Squeeze the plant juice and remove the slag, then cultivate it at a constant temperature to obtain a culture solution; grind the grain into powder, and perform water treatment to obtain gluten; mix the above-mentioned plant culture solution with gluten, stir them evenly, and then cultivate them to obtain a plant fibrin glue; Just mix the cement, superfine silica fume, water reducer, and plant fibrin glue together evenly. [0004] CN03116916.3 An underwater anti-dispersion concrete admixture for construction, which is composed of methyl cellulose, polyacrylamide, sodium dodecyl benzene sulfonate, naphthalene-bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/22C04B24/38C04B24/18C04B24/04C04B22/08C04B22/06C04B22/00
CPCC04B2111/62C04B2111/74C04B2103/008C04B40/0039Y02W30/91C04B14/043C04B14/047C04B18/08C04B18/146C04B24/04C04B24/18C04B24/383C04B28/02C04B2103/302C04B24/22
Inventor 张长民周伟许海彬丁新龙林鲜秦延龙
Owner CNPC RES INST OF ENG TECH
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