Efficient superfine cement based composite grouting material for grouting treatment of water-rich sand layer, preparation process and application

A technology of ultra-fine cement and composite grouting, which is applied in the direction of drilling composition, wellbore/well components, sealing/isolation, etc., which can solve the problem of volume shrinkage, poor corrosion resistance, and difficulty in sealing water-rich sand layers Blocking and reinforcement problems, to prevent volume shrinkage, improve early strength, promote the degree of hydration and the rate of hydration formation

CN107572994AActive Publication Date: 2018-01-12SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-01-12

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Abstract

The invention discloses an efficient superfine cement based composite grouting material for grouting treatment of a water-rich sand layer, a preparation process and application. The efficient superfine cement based composite grouting material is prepared from the following components in parts by weight: 40 to 80 parts of portland cement clinker, 10 to 45 parts of coal ash, 5 to 30 parts of superfine slag micro powder, 2 to 6.5 parts of desulphurization gypsum, 1 to 10 parts of silica fume, 0.51 to 2.10 parts of first mixed composite modifier, 0.4 to 2.4 parts of second mixed composite modifierand 5.5 to 8.9 parts of third mixed composite modifier; the coal ash is prepared from the following components in parts by weight: 50 to 100 parts of high-calcium coal ash and 0 to 50 parts of low-calcium coal ash; the first mixed composite modifier is prepared from the following components in parts by weight: 96 to 99 parts of super plasticizer and 1 to 4 parts of hydroxypropyl methyl cellulose;the second mixed composite modifier is prepared from the following components in parts by weight: 20 to 32 parts of sodium hydroxide, 21 to 28 parts of sodium carbonate, 18 to 32 parts of sodium sulfate and 18 to 36 parts of sodium metaaluminate; the third mixed composite modifier is prepared from the following components in parts by weight: 12 to 25 parts of calcium chloride, 8 to 21 parts of lithium chloride, 10 to 23 parts of triethanolamine and 32 to 68 parts of sulphoaluminate cement clinker.
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Description

technical field

[0001] The invention belongs to the technical field of grouting and water blocking reinforcement, and relates to a high-efficiency ultra-fine cement-based grouting material and its preparation process, in particular to a grouting material suitable for water-rich fine sand layers, water-rich powder fine sand soil layers, and quicksand layers. A new type of high-efficiency ultra-fine cement-based composite grouting material for grout treatment, its preparation process and application. Background technique

[0002] There are more and more projects such as tunnels, subways, water conservancy and hydropower and mines in our country, and the geological conditions faced in the construction of various projects are becoming increasingly complex. Among them, the water-rich sandy soil layer and quicksand layer are prone to major geological disasters such as water gushing and sand collapse and landslides due to their strong water-richness, loose and broken structure, poo...

Examples

Embodiment 1

[0060] 1. High-efficiency ultra-fine cement-based composite grouting material for grouting treatment of water-rich sand layers, consisting of the following components in parts by weight: Portland cement clinker 51 parts, fly ash 30 parts, slag powder 12 parts , 4 parts of desulfurized gypsum, 3 parts of silica fume, 1.32 parts of external compound regulator I, 1.6 parts of external compound regulator II, and 7.1 parts of external compound regulator III; the composition of one part by weight of composite regulator is: polycarboxylic acid 97 parts of water-reducing agent, 3 parts of hydroxypropyl methylcellulose; two parts by weight of composite regulator are: 21 parts of sodium hydroxide, 24 parts of sodium carbonate, 23 parts of sodium sulfate, 32 parts of sodium metaaluminate; composite regulator The array of three parts by weight of the agent is: 15 parts of calcium chloride, 13 parts of lithium chloride, 12 parts of triethanolamine, 60 parts of sulphoaluminate cement clinker...

Embodiment 2

[0068] 1. A high-efficiency ultra-fine cement-based composite grouting material for grouting treatment of water-rich sand layers, consisting of the following components by weight:

[0069] 55 parts of Portland cement clinker, 28 parts of fly ash, 10 parts of fine slag powder, 3 parts of desulfurized gypsum, 4 parts of silica fume, 1.42 parts of compound regulator I, 1.6 parts of compound regulator II, and Three 7.1 parts of composite conditioner; one part by weight of composite conditioner becomes: 98 parts of polycarboxylate water reducer, 2 parts of hydroxypropyl methylcellulose; two parts by weight of composite conditioner becomes: 21 parts of sodium hydroxide, 24 parts of sodium carbonate, 23 parts of sodium sulfate, 32 parts of sodium metaaluminate; the three parts by weight of the composite regulator are: 15 parts of calcium chloride, 13 parts of lithium chloride, 12 parts of triethanolamine, sulfoaluminate cement clinker 60 parts; the fly ash includes 80 parts of high-c...

Embodiment 3

[0076] 1. A high-efficiency ultra-fine cement-based composite grouting material for grouting treatment of water-rich sand layers, consisting of the following components by weight:

[0077] 59 parts of Portland cement clinker, 25 parts of fly ash, 8 parts of fine slag powder, 4 parts of desulfurized gypsum, 4 parts of silica fume, 1.42 parts of compound regulator I, 1.8 parts of compound regulator II, and Composite conditioner three 7.9 parts; Composite conditioner one weight part array becomes: 98 parts of polycarboxylate superplasticizers, 2 parts of hydroxypropyl methylcellulose; Composite conditioner two weight parts arrays become: sodium hydroxide 25 parts, 23 parts of sodium carbonate, 20 parts of sodium sulfate, 32 parts of sodium metaaluminate; the three parts by weight of the composite regulator are: 16 parts of calcium chloride, 14 parts of lithium chloride, 12 parts of triethanolamine, sulfoaluminate cement clinker 58 parts; the fly ash includes 80 parts of high-calc...