CN109956722A - A kind of preparation method of High-strength waterproof bubble lightweight soil - Google Patents
A kind of preparation method of High-strength waterproof bubble lightweight soil Download PDFInfo
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- CN109956722A CN109956722A CN201910206057.XA CN201910206057A CN109956722A CN 109956722 A CN109956722 A CN 109956722A CN 201910206057 A CN201910206057 A CN 201910206057A CN 109956722 A CN109956722 A CN 109956722A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention relates to a kind of preparation methods of High-strength waterproof bubble lightweight soil, belong to construction material preparation technical field.The present invention is using rice husk as raw material, after pyrolysis processing and aluminium oxide and oxidizing ferment mixed calcining, lightweight reinforcing filler is made, then using pig bone as raw material, extraction, which is steamed, by high temperature and pressure obtains pig bone extracting solution, then triethyl orthoformate is added after bed-silt and cement and rosin soap, lightweight enhancing material and pig bone being extracted filtrate premix, maintenance is stood after high-speed stirred, finally obtained High-strength waterproof bubble lightweight soil, High-strength waterproof bubble lightweight soil mechanics intensity produced by the present invention is high, waterproof performance is good, has broad application prospects.
Description
Technical field
The present invention relates to a kind of preparation methods of High-strength waterproof bubble lightweight soil, belong to construction material technology of preparing neck
Domain.
Background technique
Light soil generally refers to the engineering material that density is less than natural rock-filled.It is to add according to a certain percentage in raw material soil
Add curing agent, water and the bubble population of pre-production, adequately mixed, stir after be formed by light-duty earth working material currently,
Most of light soil is all to be mixed to set by mixing such as raw material soil, light material, curing agent and water.Work can be used in raw material soil
Journey waste soil, dredging silt can also be used cohesive soil or normal sand etc., but mix to reach with curing agent and the abundant of bubble
It closing, and ensures the mobility of air bubble mix light-textured soil, the diameter of raw material soil is preferably less than 5mm, and it is native for the raw material for being unsatisfactory for requiring,
Solution mud and necessary screening process should be carried out in advance.Light material mainly has polystyrene foam particles, foaming agent and discards
Foamed plastics or tire particle etc., shape is mostly spherolite, particle and fragment shape；Curing materials can be divided into host agent and adjuvant
Two kinds, host agent is mainly to play consolidation, reinforce soil body skeleton, and adjuvant is the curing materials for the purpose of being catalyzed, early coagulate;
Host agent is based on cement class, and there are commonly pozzolan cement, ordinary portland cement, blast-furnace portland cement etc., these materials
Hydration occurs and generates Ca (OH) with water after being added in soil2Product, Ca (OH)2Ion exchange occurs with clay particle to be formed admittedly
Compound has the function that soil mass consolidation skeleton, in practice it has proved that, use the better effect of blast-furance cement；Adjuvant refers to land plaster, silicon
The auxiliary materials such as powder, the purpose that these materials are added are to reduce the dosage of host agent, achieve the purpose that reduce cost.Water then uses
General pure water or tap water.
Air bubble mix light-textured soil is a kind of novel light fill material that developed in civil engineering field in recent years,
It is to add curing materials, water and bubble according to a certain ratio in raw material soil, is adequately mixed one be mixing uniformly to form
The light-duty earth working material of kind.Its density linear reduction with the increase of bubble incorporation rate.Air bubble mix light-textured soil density is lesser
The reason is that bubble occupies a large amount of space in slurry, when with curing materials by cementing together after, mixing light
There are a large amount of tiny holes in soil, so that the density of raw material soil is greatly lowered.Air bubble mix light-textured soil is manual manufacture
Earth working material, bulk density can be made more much smaller than the general soil body, and its intensity and deformation characteristic can achieve it is even super
The good soil body is crossed, and convenient for construction etc..Its key property is as follows: 1, it is Lightness, containing a large amount of in air bubble mix light-textured soil
Micro-bubble group, bulk density is not only more much smaller than the general soil body, and by adjusting the bubble and curing agent in the soil body
Content, can be as required to the bulk density of air bubble mix light-textured soil in 5~16kN/m3It is interior to carry out necessary adjustment.2, intensity
Controllability as the controllability principle of bulk density, by change various composition match ratio, air bubble mix light-textured soil it is strong
Degree can be in 300~1500kN/m2In the range of be adjusted.3, high fluidity, air bubble mix light-textured soil have good stream
Dynamic property, can be pumped by pipeline, and maximum delivery distance is up to 1500m, and maximum pumping height is up to 30m.To prevent from leaking,
When carrying out the pouring construction of air bubble mix light-textured soil, generally have to build some necessary and simple barricade.4, after solidifying from
Vertical property will start to solidify usually after pouring 5h due to using cement as curing agent, and can support oneself after solidification, can be into
Row vertically bankets, and to Retaining Structures almost without pushing force.5, good application property is since it is with good mobility
It with the independence after solidification, and is not required to vibrate and rolling operation, can carry out remote or construct in small space.In addition, bubble
A large amount of bubble population is mixed in mix light-textured soil, the volume of finished product can reach 3 times of material volume or more.6, durability category cement
Class material, compared with high molecular material, durability, heat-resisting and oil rub resistance ability are strong, with the durability that cement material is same.
7, thermal insulation contains a large amount of bubble in air bubble mix light-textured soil, has good thermal insulation.
But bubble stability is poor after bubble lightweight soil common at present is blistered due to foaming agent, is easy when consolidating in the later period
It vanishes, non-deformability is poor, and mechanical property is low and waterproofness is insufficient, because of a kind of High-strength waterproof bubble lightweight soil of the invention
There is positive meaning to construction material preparation technical field.
Summary of the invention
Present invention mainly solves the technical issues of, for common bubble lightweight soil at present due to bubble after foaming agent blistering
Stability is poor, is easy to vanish when consolidating in the later period, and non-deformability is poor, and mechanical property is low and the insufficient defect of waterproofness, mentions
For a kind of preparation method of High-strength waterproof bubble lightweight soil.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of preparation method of High-strength waterproof bubble lightweight soil, it is characterised in that specific preparation step are as follows:
(1) bed-silt, ordinary portland cement, lightweight reinforcing filler, rosin soap, dehydrated alcohol, filtrate and water mixing are weighed
It is fitted into batch mixer afterwards, 15~20min is premixed with the revolving speed of 100~200r/min, obtains pre-composition；
(2) after premix terminates, triethyl orthoformate is added into batch mixer, and improves blender revolving speed to 500~600r/
Min, high-speed stirred mix 30~40min, obtain light soil slurry；
(3) obtained light soil slurry is placed in fog room, stands 24~26h of maintenance, up to high-intensitive anti-after maintenance
Water type bubble lightweight soil；
The preparation step of the lightweight reinforcing filler are as follows:
Weigh rice husk to be put into pyrolysis oven, 2~3h of pyrolysis processing, obtain rice husk thermal decomposition ash, by rice husk thermal decomposition ash and aluminium oxide with
And be fitted into calcining furnace after magnesia mixing, under carbon-dioxide protecting atmosphere, 1500~1600 DEG C are heated to, calcining 2
~4h obtains lightweight reinforcing filler；
The preparation step of the filtrate are as follows:
(1) it weighs fresh pig bone and is put into 20~30min of crushing in pulverizer, obtain pig bone crushed material, pig bone crushed material is filled
Enter in still kettle, opens steam valve and be passed through water vapour into still kettle, until pressure reaches 1.2~1.5MPa in still kettle,
High pressure steaming handles 1~2h；
(2) it to high pressure steaming after treatment, obtains steaming product, continues to be passed through hot water into still kettle until product will be steamed
It is totally submerged, heat preservation 3~4h of heat treatment after to be heated, is separated by filtration, obtains filtrate.
In the specific preparation step (1) of the High-strength waterproof bubble lightweight soil, according to parts by weight, bed-silt is
30~40 parts, ordinary portland cement be 15~20 parts, lightweight reinforcing filler is 5~10 parts, rosin soap is 3~5 parts, anhydrous second
Alcohol is 10~15 parts, filtrate is 5~10 parts, water is 30~50 parts.
In the specific preparation step (2) of the High-strength waterproof bubble lightweight soil, the additional amount of triethyl orthoformate is
The 10~15% of premix mass.
In the specific preparation step (3) of the High-strength waterproof bubble lightweight soil, the temperature of fog room is 20~25 DEG C,
Relative air humidity is 90~95 DEG C.
In the preparation step of the lightweight reinforcing filler, the temperature of pyrolysis processing is preferably 600~700 DEG C.
In the preparation step of the lightweight reinforcing filler, the mass ratio of rice husk thermal decomposition ash and aluminium oxide and magnesia is
10:2:1。
In the preparation step (1) of the filtrate, the temperature for being passed through water vapour is 150~180 DEG C.
In the preparation step (2) of the filtrate, the temperature for being passed through hot water is 95~100 DEG C.
The method have the benefit that:
(1) present invention enhances after pyrolysis processing with aluminium oxide and oxidizing ferment mixed calcining, obtained lightweight using rice husk as raw material
Filler steams extraction by high temperature and pressure and obtains pig bone extracting solution, then by bed-silt and cement then using pig bone as raw material
And rosin soap, lightweight enhancing material and pig bone are extracted and add triethyl orthoformate after filtrate premixes, and stand and support after high-speed stirred
Shield, finally obtained High-strength waterproof bubble lightweight soil, the present invention are pyrolyzed by raw material of rice husk first, utilize rice husk thermal decomposition
There is ash the porous light of rice husk to lose state structure, and by rice husk and aluminium oxide and magnesia hybrid reaction, under high temperature action
Silicon-aluminum-magnesium spinel structure is generated, to obtain light porous spinel structure reinforcing filler, the addition of this filler is great
Increase the mechanical strength and mechanical property of light soil of the present invention；
(2) then the present invention extracts also from pig bone and obtains the extracting solution rich in gelatine albumen, it is answered with rosin soap foaming agent
With use, after rosin soap blistering, since gelatine protein-colloid viscosity is higher, part peptide chain can be in bubble circle of rosin soap generation
It is stretched on face, forming a two dimension protection network so that the mechanical strength of foam interface film increases can promote the stabilization of foam
Property, these bubbles can block the migration of capillary water in light soil slurry, while these micro-bubbles have cut off light soil cured layer
In hole, reduce the water absorbing capacity of light soil cured layer, the waterproofness of light soil also added while stable foam,
In addition it is also added into triethyl orthoformate in light soil raw material of the present invention, triethyl orthoformate here is that ester exchange agent is again
Dehydrating agent can be reacted with the amino acid in gelatine albumen into ester, so that hydrophobicity ester group quantity increases in light soil, further
The waterproof performance for improving light soil, has broad application prospects.
Specific embodiment
It weighs rice husk to be put into pyrolysis oven, 2~3h of pyrolysis processing at 600~700 DEG C, rice husk thermal decomposition ash is obtained, by rice
Shell pyrolysis ash and aluminium oxide and magnesia are to be fitted into calcining furnace after 10:2:1 is mixed in mass ratio, in carbon-dioxide protecting gas
Under atmosphere, 1500~1600 DEG C are heated to, 2~4h is calcined, obtains lightweight reinforcing filler, it is spare；Fresh pig bone is weighed to put
Enter 20~30min of crushing in pulverizer, obtain pig bone crushed material, pig bone crushed material is fitted into still kettle, opens steam valve
It is passed through into still kettle and is preheated to 150~180 DEG C of water vapour, until pressure reaches 1.2~1.5MPa in still kettle, high pressure is steamed
1~2h of system processing；It to high pressure steaming after treatment, obtains steaming product, continues to be passed through 95~100 DEG C of heat into still kettle
Water is totally submerged until product will be steamed, and heat preservation 3~4h of heat treatment after to be heated, is separated by filtration, obtains filtrate；It presses
Parts by weight meter weighs 30~40 parts of bed-silts, 15~20 parts of ordinary portland cements, 5~10 parts of spare lightweight enhancings
Mixing is packed into after filler, 3~5 parts of rosin soaps, 10~15 parts of dehydrated alcohols, 5~10 parts of above-mentioned filtrates and 30~50 parts of water mixing
In machine, 15~20min is premixed with the revolving speed of 100~200r/min, obtains pre-composition；After premix terminates, continue to batch mixer
The middle triethyl orthoformate that premix mass 10~15% is added, and blender revolving speed is improved to 500~600r/min, high-speed stirring
30~40min of mixing is mixed, light soil slurry is obtained；By obtained light soil slurry be placed on temperature be 20~25 DEG C, air it is opposite
In the fog room that humidity is 90~95 DEG C, 24~26h of maintenance is stood, up to High-strength waterproof bubble lightweight after maintenance
Soil.
The preparation of lightweight reinforcing filler: weighing rice husk and be put into pyrolysis oven, and pyrolysis processing 2h, obtains rice husk at 600 DEG C
Rice husk thermal decomposition ash and aluminium oxide and magnesia are to be fitted into calcining furnace after 10:2:1 is mixed, two by pyrolysis ash in mass ratio
Under carbonoxide protective atmosphere, 1500 DEG C are heated to, 2h is calcined, obtains lightweight reinforcing filler, it is spare；
The acquisition of filtrate:
(1) it weighs fresh pig bone and is put into pulverizer and crush 20min, obtain pig bone crushed material, pig bone crushed material is packed into and is steamed
It presses in kettle, opens steam valve and be passed through into still kettle and be preheated to 150 DEG C of water vapour, until pressure reaches in still kettle
1.2MPa, high pressure steaming handle 1h；
(2) it to high pressure steaming after treatment, obtains steaming product, continues to be passed through 95 DEG C of hot water into still kettle until will steam
Product processed is totally submerged, and heat preservation heat treatment 3h after to be heated, is separated by filtration, obtains filtrate；
The preparation of premix:
According to parts by weight, 30 parts of bed-silts, 15 parts of ordinary portland cements, 5 parts of spare lightweight reinforcing fillers, 3 are weighed
It is fitted into batch mixer after part rosin soap, 10 parts of dehydrated alcohols, 5 parts of above-mentioned filtrates and 30 parts of water mixing, with the revolving speed of 100r/min
15min is premixed, pre-composition is obtained；
The preparation of High-strength waterproof bubble lightweight soil:
(1) after premix terminates, continue the triethyl orthoformate that premix mass 10% is added into batch mixer, and improve stirring
Machine revolving speed to 500r/min, high-speed stirred mixes 30min, obtains light soil slurry；
(2) obtained light soil slurry is placed in the fog room that temperature is 20 DEG C, relative air humidity is 90 DEG C, stands maintenance
For 24 hours, up to High-strength waterproof bubble lightweight soil after maintenance.
The preparation of lightweight reinforcing filler: weighing rice husk and be put into pyrolysis oven, and pyrolysis processing 2h, obtains rice husk at 630 DEG C
Rice husk thermal decomposition ash and aluminium oxide and magnesia are to be fitted into calcining furnace after 10:2:1 is mixed, two by pyrolysis ash in mass ratio
Under carbonoxide protective atmosphere, 1530 DEG C are heated to, 2h is calcined, obtains lightweight reinforcing filler, it is spare；
The acquisition of filtrate:
(1) it weighs fresh pig bone and is put into pulverizer and crush 23min, obtain pig bone crushed material, pig bone crushed material is packed into and is steamed
It presses in kettle, opens steam valve and be passed through into still kettle and be preheated to 160 DEG C of water vapour, until pressure reaches in still kettle
1.3MPa, high pressure steaming handle 1h；
(2) it to high pressure steaming after treatment, obtains steaming product, continues to be passed through 97 DEG C of hot water into still kettle until will steam
Product processed is totally submerged, and heat preservation heat treatment 4h after to be heated, is separated by filtration, obtains filtrate；
The preparation of premix:
According to parts by weight, 33 parts of bed-silts, 17 parts of ordinary portland cements, 7 parts of spare lightweight reinforcing fillers, 3 are weighed
It is fitted into batch mixer after part rosin soap, 12 parts of dehydrated alcohols, 7 parts of above-mentioned filtrates and 38 parts of water mixing, with the revolving speed of 120r/min
17min is premixed, pre-composition is obtained；
The preparation of High-strength waterproof bubble lightweight soil:
(1) after premix terminates, continue the triethyl orthoformate that premix mass 12% is added into batch mixer, and improve stirring
Machine revolving speed to 530r/min, high-speed stirred mixes 33min, obtains light soil slurry；
(2) obtained light soil slurry is placed in the fog room that temperature is 22 DEG C, relative air humidity is 92 DEG C, stands maintenance
25h, up to High-strength waterproof bubble lightweight soil after maintenance.
The preparation of lightweight reinforcing filler: weighing rice husk and be put into pyrolysis oven, and pyrolysis processing 3h, obtains rice husk at 670 DEG C
Rice husk thermal decomposition ash and aluminium oxide and magnesia are to be fitted into calcining furnace after 10:2:1 is mixed, two by pyrolysis ash in mass ratio
Under carbonoxide protective atmosphere, 1570 DEG C are heated to, 3h is calcined, obtains lightweight reinforcing filler, it is spare；
The acquisition of filtrate:
(1) it weighs fresh pig bone and is put into pulverizer and crush 28min, obtain pig bone crushed material, pig bone crushed material is packed into and is steamed
It presses in kettle, opens steam valve and be passed through into still kettle and be preheated to 170 DEG C of water vapour, until pressure reaches in still kettle
1.4MPa, high pressure steaming handle 2h；
(2) it to high pressure steaming after treatment, obtains steaming product, continues to be passed through 98 DEG C of hot water into still kettle until will steam
Product processed is totally submerged, and heat preservation heat treatment 4h after to be heated, is separated by filtration, obtains filtrate；
The preparation of premix:
According to parts by weight, 38 parts of bed-silts, 18 parts of ordinary portland cements, 8 parts of spare lightweight reinforcing fillers, 4 are weighed
It is fitted into batch mixer after part rosin soap, 13 parts of dehydrated alcohols, 8 parts of above-mentioned filtrates and 45 parts of water mixing, with the revolving speed of 180r/min
18min is premixed, pre-composition is obtained；
The preparation of High-strength waterproof bubble lightweight soil:
(1) after premix terminates, continue the triethyl orthoformate that premix mass 14% is added into batch mixer, and improve stirring
Machine revolving speed to 580r/min, high-speed stirred mixes 38min, obtains light soil slurry；
(2) obtained light soil slurry is placed in the fog room that temperature is 24 DEG C, relative air humidity is 94 DEG C, stands maintenance
25h, up to High-strength waterproof bubble lightweight soil after maintenance.
The preparation of lightweight reinforcing filler: weighing rice husk and be put into pyrolysis oven, and pyrolysis processing 3h, obtains rice husk at 700 DEG C
Rice husk thermal decomposition ash and aluminium oxide and magnesia are to be fitted into calcining furnace after 10:2:1 is mixed, two by pyrolysis ash in mass ratio
Under carbonoxide protective atmosphere, 1600 DEG C are heated to, 4h is calcined, obtains lightweight reinforcing filler, it is spare；
The acquisition of filtrate:
(1) it weighs fresh pig bone and is put into pulverizer and crush 30min, obtain pig bone crushed material, pig bone crushed material is packed into and is steamed
It presses in kettle, opens steam valve and be passed through into still kettle and be preheated to 180 DEG C of water vapour, until pressure reaches in still kettle
1.5MPa, high pressure steaming handle 2h；
(2) it to high pressure steaming after treatment, obtains steaming product, continues to be passed through 100 DEG C of hot water into still kettle until will
It steams product to be totally submerged, heat preservation heat treatment 4h after to be heated, is separated by filtration, obtains filtrate；
The preparation of premix:
According to parts by weight, 40 parts of bed-silts, 20 parts of ordinary portland cements, 10 parts of spare lightweight reinforcing fillers, 5 are weighed
It is fitted into batch mixer after part rosin soap, 15 parts of dehydrated alcohols, 10 parts of above-mentioned filtrates and 50 parts of water mixing, with the revolving speed of 200r/min
20min is premixed, pre-composition is obtained；
The preparation of High-strength waterproof bubble lightweight soil:
(1) after premix terminates, continue the triethyl orthoformate that premix mass 15% is added into batch mixer, and improve stirring
Machine revolving speed to 600r/min, high-speed stirred mixes 40min, obtains light soil slurry；
(2) obtained light soil slurry is placed in the fog room that temperature is 25 DEG C, relative air humidity is 95 DEG C, stands maintenance
26h, up to High-strength waterproof bubble lightweight soil after maintenance.
Reference examples are using the light soil that Changzhou company produces as reference examples to High-strength waterproof gas produced by the present invention
The light soil steeped in light soil and reference examples carries out performance detection, and testing result is as shown in table 1:
Test method:
Intensity test:
It is detected by JTJT/T019---98 " highway subgrade pavement on-the-spot test regulation " standard.
Water absorption rate test:
Test is referring to GB11971-89 " Test method for mechanical property of aerated concrete " and GB11970-89 " air entrained concrete appearance
Weight, moisture content and moisture content test method " it is detected.
1 performance measurement result of table
| Detection project | 28d compression strength (MPa) | Water absorption rate (%) |
| Example 1 | 6.7 | 2.1 |
| Example 2 | 6.9 | 1.8 |
| Example 3 | 7.2 | 1.6 |
| Example 4 | 7.4 | 1.5 |
| Reference examples | 0.5 | 13.1 |
It can be seen that High-strength waterproof bubble lightweight soil mechanics intensity produced by the present invention is high by detection data in upper table, waterproof
Excellent performance has broad application prospects.
Claims (8)
1. a kind of preparation method of High-strength waterproof bubble lightweight soil, it is characterised in that specific preparation step are as follows:
(1) bed-silt, ordinary portland cement, lightweight reinforcing filler, rosin soap, dehydrated alcohol, filtrate and water mixing are weighed
It is fitted into batch mixer afterwards, 15~20min is premixed with the revolving speed of 100~200r/min, obtains pre-composition；
(2) after premix terminates, triethyl orthoformate is added into batch mixer, and improves blender revolving speed to 500~600r/
Min, high-speed stirred mix 30~40min, obtain light soil slurry；
(3) obtained light soil slurry is placed in fog room, stands 24~26h of maintenance, up to high-intensitive anti-after maintenance
Water type bubble lightweight soil；
The preparation step of the lightweight reinforcing filler are as follows:
Weigh rice husk to be put into pyrolysis oven, 2~3h of pyrolysis processing, obtain rice husk thermal decomposition ash, by rice husk thermal decomposition ash and aluminium oxide with
And be fitted into calcining furnace after magnesia mixing, under carbon-dioxide protecting atmosphere, 1500~1600 DEG C are heated to, calcining 2
~4h obtains lightweight reinforcing filler；
The preparation step of the filtrate are as follows:
(1) it weighs fresh pig bone and is put into 20~30min of crushing in pulverizer, obtain pig bone crushed material, pig bone crushed material is filled
Enter in still kettle, opens steam valve and be passed through water vapour into still kettle, until pressure reaches 1.2~1.5MPa in still kettle,
High pressure steaming handles 1~2h；
(2) it to high pressure steaming after treatment, obtains steaming product, continues to be passed through hot water into still kettle until product will be steamed
It is totally submerged, heat preservation 3~4h of heat treatment after to be heated, is separated by filtration, obtains filtrate.
2. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the specific preparation step (1) of High-strength waterproof bubble lightweight soil, according to parts by weight, bed-silt be 30~40 parts, it is general
Logical portland cement is 15~20 parts, lightweight reinforcing filler is 5~10 parts, rosin soap is 3~5 parts, dehydrated alcohol is 10~15
Part, filtrate are 5~10 parts, water is 30~50 parts.
3. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the specific preparation step (2) of High-strength waterproof bubble lightweight soil, the additional amount of triethyl orthoformate is premix mass
10~15%.
4. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the specific preparation step (3) of High-strength waterproof bubble lightweight soil, the temperature of fog room is 20~25 DEG C, relative air humidity
It is 90~95 DEG C.
5. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the preparation step of lightweight reinforcing filler, the temperature of pyrolysis processing is preferably 600~700 DEG C.
6. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the preparation step of lightweight reinforcing filler, the mass ratio of rice husk thermal decomposition ash and aluminium oxide and magnesia is 10:2:1.
7. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the preparation step (1) of filtrate, the temperature for being passed through water vapour is 150~180 DEG C.
8. a kind of preparation method of High-strength waterproof bubble lightweight soil according to claim 1, it is characterised in that: described
In the preparation step (2) of filtrate, the temperature for being passed through hot water is 95~100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910206057.XA CN109956722A (en) | 2019-03-19 | 2019-03-19 | A kind of preparation method of High-strength waterproof bubble lightweight soil |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655364A (en) * | 2019-10-28 | 2020-01-07 | 长安大学 | Concrete containing sludge pyrolysate and preparation method thereof |
| CN112608087A (en) * | 2020-12-18 | 2021-04-06 | 广东泰禾建设有限公司 | High-strength waterproof foam light soil and preparation method thereof |
-
2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655364A (en) * | 2019-10-28 | 2020-01-07 | 长安大学 | Concrete containing sludge pyrolysate and preparation method thereof |
| CN112608087A (en) * | 2020-12-18 | 2021-04-06 | 广东泰禾建设有限公司 | High-strength waterproof foam light soil and preparation method thereof |
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Application publication date: 20190702 |