CN117003584A - Light heat-insulating composite foam concrete - Google Patents
Light heat-insulating composite foam concrete Download PDFInfo
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- CN117003584A CN117003584A CN202310971864.7A CN202310971864A CN117003584A CN 117003584 A CN117003584 A CN 117003584A CN 202310971864 A CN202310971864 A CN 202310971864A CN 117003584 A CN117003584 A CN 117003584A
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- foam concrete
- modified
- composite foam
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- water
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- 239000011381 foam concrete Substances 0.000 title claims abstract description 96
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 93
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 86
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 83
- 241001330002 Bambuseae Species 0.000 claims abstract description 83
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 83
- 239000011425 bamboo Substances 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 239000004568 cement Substances 0.000 claims abstract description 31
- 239000004088 foaming agent Substances 0.000 claims abstract description 29
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 28
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 claims abstract description 27
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims abstract description 25
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 claims abstract description 25
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims abstract description 25
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 238000012986 modification Methods 0.000 claims abstract description 15
- 230000004048 modification Effects 0.000 claims abstract description 15
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 230000000051 modifying effect Effects 0.000 claims abstract description 10
- 238000004321 preservation Methods 0.000 claims abstract description 7
- 239000006260 foam Substances 0.000 claims description 41
- 238000003756 stirring Methods 0.000 claims description 35
- 239000000203 mixture Substances 0.000 claims description 34
- 238000005187 foaming Methods 0.000 claims description 29
- 238000002156 mixing Methods 0.000 claims description 18
- 238000009413 insulation Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 5
- 238000007605 air drying Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000002715 modification method Methods 0.000 claims description 5
- 238000013329 compounding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 16
- 238000012423 maintenance Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000126 substance Substances 0.000 description 11
- 238000005507 spraying Methods 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000011398 Portland cement Substances 0.000 description 5
- 239000012615 aggregate Substances 0.000 description 5
- 229920005646 polycarboxylate Polymers 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- 244000271437 Bambusa arundinacea Species 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 description 1
- XUJLWPFSUCHPQL-UHFFFAOYSA-N 11-methyldodecan-1-ol Chemical compound CC(C)CCCCCCCCCCO XUJLWPFSUCHPQL-UHFFFAOYSA-N 0.000 description 1
- 206010003591 Ataxia Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- -1 isooctanol compound Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The application relates to the technical field of concrete, and in particular discloses a light heat-preservation composite foam concrete which comprises the following components in parts by weight: 100 parts of water; 215-220 parts of cement; 1100-1110 parts of aggregate; 31-33 parts of foaming agent; 13-14 parts of modified bamboo fiber; 2.7-2.9 parts of water reducer; the modified bamboo fiber is obtained by soaking bamboo fiber in a modifying liquid for modification; the modified liquid is compounded by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol. The application has the advantage of improving the strength of the foam concrete.
Description
Technical Field
The application relates to the field of concrete, in particular to light heat-insulating composite foam concrete.
Background
The foam concrete is a novel light heat-insulating material which is formed by fully foaming a foaming agent in a mechanical way through a foaming machine, mixing the foam with cement paste, pumping the foaming agent to perform cast-in-situ construction or injection molding in a mold, and naturally curing and contains a large number of closed pores, and has the effects of light weight, heat insulation, heat resistance, fire resistance, sound insulation, frost resistance and the like, and has high application value.
However, since the foam concrete has a large number of air holes, the strength of the foam concrete is reduced due to the reduced compactness, and the foam concrete is difficult to be applied to a structure with high requirement on pressure bearing capacity, and the application of the foam concrete is limited.
In order to improve the strength of foam concrete, fibers are usually added for reinforcement, but in practice, it is found that the fibers are usually repelled due to the surface tension of the foam, so that the fibers are usually attached to the surface of the foam and are difficult to pass through the foam, and when a small amount of fibers pass through the foam, the foam is broken, so that the fiber reinforcement is usually only used for reinforcing the concrete body, and is difficult to reinforce the air holes of the concrete, so that the reinforcement effect is more general, the strength improvement range is smaller, and therefore, the improvement is still available.
Disclosure of Invention
In order to improve the strength of the foam concrete, the application provides the light heat-insulating composite foam concrete.
The application provides a light heat-insulating composite foam concrete which adopts the following technical scheme:
the light heat-insulating composite foam concrete comprises the following components in parts by weight:
100 parts of water;
215-220 parts of cement;
1100-1110 parts of aggregate;
31-33 parts of foaming agent;
13-14 parts of modified bamboo fiber;
2.7-2.9 parts of water reducer;
the modified bamboo fiber is obtained by soaking bamboo fiber in a modifying liquid for modification;
the modified liquid is prepared by compounding water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol.
Through adopting above-mentioned technical scheme, through adopting by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline, isooctanol compound and form and the modification liquid is to the modification of bamboo fibre, utilize the micropore structure of bamboo fibre can adsorb the modification liquid well, the effect of modifying of bamboo fibre is better, the bamboo fibre after the modification is by fine compatibility with the foaming agent, make the bamboo fibre can pass the foam easily in the in-process that concrete mixture stirs, and can not destroy the foam, do not influence foam stability, make the inside gas pocket department of concrete is run through in a large number to the bamboo fibre after the concrete solidification, can effectively make up the intensity decline that the gas pocket department brought because the compactness decline, the reinforcement effect is more accurate, the problem that is difficult to pass the foam and is difficult to carry out the reinforcement to concrete gas pocket department because the surface tension of foam in the foam is added to the foam concrete has been overcome, make the foam concrete's intensity obtain to promote by a wide margin, make the foam concrete better be applicable to in the structure that has higher requirements to the pressure-bearing performance, make the foam concrete have better application prospect.
Preferably, in the modified liquid, the mass ratio of water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol is 100:12-14:1-3:3-5:2-4:15-17.
Through adopting above-mentioned technical scheme, through the mass proportion scope of specifically selecting epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline, isooctanol for the modification effect to the bamboo fibre is better, makes modified bamboo fibre can easily run through the foam and can keep the foam stable well, is difficult for leading to the foam to break, improves the intensity of foam concrete when keeping the high foaming effect of foam concrete better.
Preferably, in the modified liquid, the mass ratio of water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol is 100:13:2:4:3:16.
by adopting the technical scheme, the modified effect on the bamboo fiber is better and the effect of reinforcing the foam concrete is better by specifically selecting the mass ratio of the epichlorohydrin, the 1, 4-butyrolactone, the nonylphenol, the imidazoline and the isooctyl alcohol.
Preferably, the modification method of the modified bamboo fiber comprises the following steps:
step 1), preparing a modified liquid;
and 2) soaking the bamboo fibers in the modified liquid, continuously stirring for 2-3 hours, filtering out the bamboo fibers, and naturally air-drying to obtain the modified bamboo fibers.
By adopting the technical scheme, the prepared modified bamboo fiber has better performance and better effect of reinforcing foam concrete.
Preferably, the specific steps for preparing the modified liquid in the step 1) are as follows:
adding water, epoxy chloropropane, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol into a stirring kettle, stirring for 10-15min at a rotating speed of 5-10r/min, and obtaining a modified liquid.
Through adopting above-mentioned technical scheme, through low-speed stirring, reduce the foam and produce for the modified liquid is absorbed by the bamboo fibre better, and the fibrous effect of modified bamboo is better, makes the effect of modified bamboo fibre reinforcement foam concrete better.
Preferably, in the step 2), the rotation speed is 5-10r/min during stirring.
Through adopting above-mentioned technical scheme, through low-speed stirring, make the bamboo fibre can contact with the modification liquid better when reducing the foam production, modify the bamboo fibre better for the bamboo fibre is better to the modification effect of foam concrete.
Preferably, the aggregate is a compound of coarse aggregate and fine aggregate.
By adopting the technical scheme, the prepared foam concrete has better quality, higher strength, better fluidity and better foaming effect through the compounding of the coarse aggregate and the fine aggregate.
Preferably, the mass ratio of the coarse aggregate to the fine aggregate is 9.9-10.1:7.9-8.1.
By adopting the technical scheme, the prepared foam concrete has higher strength and better workability by specifically selecting the mass ratio of the coarse aggregate and the fine aggregate.
Preferably, the preparation method of the light heat-insulating composite foam concrete comprises the following steps:
step 1), uniformly mixing cement, aggregate and modified bamboo fibers to obtain a premix;
step 2), adding water into the premix, and uniformly mixing the concrete mixture;
step 3), foaming the foaming agent into foam through a foaming device, adding the foam into the concrete mixture, and uniformly mixing to obtain the foam concrete mixture;
and 4) injecting the foam concrete mixture into a mould, curing and demoulding to obtain the light heat-insulating composite foam concrete.
By adopting the technical scheme, the prepared light heat-insulating composite foam concrete has good heat-insulating performance, lighter weight and higher strength, can be well applied to building structures with higher requirements on bearing performance, and has wider application range.
In summary, the application has the following beneficial effects:
1. according to the application, the modified liquid is compounded by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol to modify the bamboo fiber, the modified liquid can be well adsorbed by utilizing the micropore structure of the bamboo fiber, so that the modified effect of the bamboo fiber is better, the modified bamboo fiber and the foaming agent have good compatibility, the bamboo fiber can easily pass through the foam in the process of stirring the concrete mixture, the foam cannot be destroyed, the stability of the foam is not influenced, the bamboo fiber can greatly pass through the air holes in the concrete after the concrete is solidified, the strength reduction caused by the reduction of compactness of the air holes can be effectively compensated, the reinforcing effect is more accurate, the problem that the fiber is difficult to pass through the foam and is difficult to reinforce the air holes of the concrete due to the surface tension of the foam in the existing fiber is solved, the strength of the foam concrete is greatly improved, the foam concrete is better suitable for the structure with higher requirements on the bearing performance, and the foam concrete has higher applicability and better application prospect.
2. According to the application, the mass proportion range of the epichlorohydrin, the 1, 4-butyrolactone, the nonylphenol, the imidazoline and the isooctanol is preferably selected, so that the modification effect on the bamboo fiber is better, the modified bamboo fiber can easily penetrate through foam, the foam stability can be well kept, the foam rupture is not easy to cause, and the strength of the foam concrete is improved while the high foaming effect of the foam concrete is better kept.
3. According to the application, the bamboo fiber can be better contacted with the modifying liquid while the foam generation is reduced by low-speed stirring, so that the bamboo fiber is better modified, and the modifying effect of the bamboo fiber on the foam concrete is better.
Detailed Description
The present application will be described in further detail with reference to examples.
Example 1
A light heat-insulating composite foam concrete consists of the following components in parts by weight:
water, cement, aggregate, foaming agent, modified bamboo fiber and water reducer.
Wherein, cement is Portland cement, runfeng cement, specification: p.o42.5r.
Wherein the aggregate is a compound of coarse aggregate and fine aggregate, and the mass ratio of the coarse aggregate to the fine aggregate is 9.9:7.9.
wherein the foaming agent is foam concrete foaming agent, which is purchased from Jiukun building materials Co., ltd.
Wherein the water reducing agent is a polycarboxylate water reducing agent and is purchased from Jinan spring pool new material Co.
Wherein the modified bamboo fiber is obtained by soaking bamboo fiber in a modifying liquid for modification.
The modified liquid is compounded by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol.
Wherein, the epoxy chloropropane is purchased from Shandong Chuang chemical industry Co., ltd., CAS number: 106-89-8.
Wherein, 1, 4-butyrolactone is purchased from Shandong Wang Biotechnology Co., ltd., CAS number: 96-48-0.
Wherein, nonylphenol is purchased from Jinan Liyang chemical industry Co., ltd., CAS number: 154-52-3.
Wherein, the imidazoline is purchased from Jinan Nuo chemical Co., ltd., CAS number: 504-74-5.
Wherein, isooctanol is purchased and placed in Shandong Chuang chemical industry Co., ltd., CAS number: 26952-21-6.
The modification method of the modified bamboo fiber comprises the following steps:
step 1), preparing a modified liquid:
100kg of water, 12kg of epichlorohydrin, 1kg of 1, 4-butyrolactone, 3kg of nonylphenol, 2kg of imidazoline and 15kg of isooctanol are put into a stirring kettle, and the stirring is carried out for 10min at a rotating speed of 5r/min, so as to prepare a modified liquid.
Step 2), soaking 20kg of bamboo fibers in 100kg of modified liquid at a rotating speed of 5r/min, continuously stirring for 2 hours, filtering out the bamboo fibers, and naturally air-drying to obtain the modified bamboo fibers.
Bamboo fibers are commercially available and have a length of 12mm.
The preparation method of the light heat-preservation composite foam concrete comprises the following steps:
step 1), 215kg of cement, 1100kg of aggregate and 13kg of modified bamboo fibers are put into a stirring kettle, the rotating speed is 60r/min, stirring is carried out for 5min, and the mixture is uniformly mixed to obtain a premix.
And 2) adding 100kg of water into the premix, stirring for 1min at the rotating speed of 45r/min, and uniformly mixing to obtain the concrete mixture.
And 3) foaming 31kg of foaming agent into foam through a foaming device, then adding the concrete mixture, and uniformly mixing to obtain the foam concrete mixture.
And 4) injecting the foam concrete mixture into a mould, carrying out water spraying maintenance for 3d, demoulding, carrying out water spraying maintenance for 7d, and standing and maintenance for 28d to obtain the light heat-insulation composite foam concrete.
The foaming device is a cement foaming machine and is purchased in the Shengtai mechanical factory in Ying county, RQ-40 type.
Example 2
A light heat-insulating composite foam concrete consists of the following components in parts by weight:
water, cement, aggregate, foaming agent, modified bamboo fiber and water reducer.
Wherein, cement is Portland cement, runfeng cement, specification: p.o42.5r.
Wherein the aggregate is a compound of coarse aggregate and fine aggregate, and the mass ratio of the coarse aggregate to the fine aggregate is 10:8.
wherein the foaming agent is foam concrete foaming agent, which is purchased from Jiukun building materials Co., ltd.
Wherein the water reducing agent is a polycarboxylate water reducing agent and is purchased from Jinan spring pool new material Co.
Wherein the modified bamboo fiber is obtained by soaking bamboo fiber in a modifying liquid for modification.
The modified liquid is compounded by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol.
Wherein, the epoxy chloropropane is purchased from Shandong Chuang chemical industry Co., ltd., CAS number: 106-89-8.
Wherein, 1, 4-butyrolactone is purchased from Shandong Wang Biotechnology Co., ltd., CAS number: 96-48-0.
Wherein, nonylphenol is purchased from Jinan Liyang chemical industry Co., ltd., CAS number: 154-52-3.
Wherein, the imidazoline is purchased from Jinan Nuo chemical Co., ltd., CAS number: 504-74-5.
Wherein, isooctanol is purchased and placed in Shandong Chuang chemical industry Co., ltd., CAS number: 26952-21-6.
The modification method of the modified bamboo fiber comprises the following steps:
step 1), preparing a modified liquid:
100kg of water, 13kg of epichlorohydrin, 2kg of 1, 4-butyrolactone, 4kg of nonylphenol, 3kg of imidazoline and 16kg of isooctanol are put into a stirring kettle, and the stirring is carried out for 12min at a rotating speed of 8r/min, so as to prepare a modified liquid.
Step 2), soaking 20kg of bamboo fibers in 50kg of modified liquid at a rotating speed of 8r/min, continuously stirring for 2.5h, filtering out the bamboo fibers, and naturally air-drying to obtain the modified bamboo fibers.
Bamboo fibers are commercially available and have a length of 12mm.
The preparation method of the light heat-preservation composite foam concrete comprises the following steps:
step 1), 218kg of cement, 1105kg of aggregate and 13.5kg of modified bamboo fibers are put into a stirring kettle, and stirred for 5min at the rotating speed of 60r/min, and the mixture is uniformly mixed to obtain a premix.
And 2) adding 100kg of water into the premix, stirring for 1min at the rotating speed of 45r/min, and uniformly mixing to obtain the concrete mixture.
And 3) foaming 32kg of foaming agent into foam through a foaming device, then adding the foam into the concrete mixture, and uniformly mixing to obtain the foam concrete mixture.
And 4) injecting the foam concrete mixture into a mould, carrying out water spraying maintenance for 3d, demoulding, carrying out water spraying maintenance for 7d, and standing and maintenance for 28d to obtain the light heat-insulation composite foam concrete.
The foaming device is a cement foaming machine and is purchased in the Shengtai mechanical factory in Ying county, RQ-40 type.
Example 3
A light heat-insulating composite foam concrete consists of the following components in parts by weight:
water, cement, aggregate, foaming agent, modified bamboo fiber and water reducer.
Wherein, cement is Portland cement, runfeng cement, specification: p.o42.5r.
Wherein the aggregate is a compound of coarse aggregate and fine aggregate, and the mass ratio of the coarse aggregate to the fine aggregate is 10.1:8.1.
wherein the foaming agent is foam concrete foaming agent, which is purchased from Jiukun building materials Co., ltd.
Wherein the water reducing agent is a polycarboxylate water reducing agent and is purchased from Jinan spring pool new material Co.
Wherein the modified bamboo fiber is obtained by soaking bamboo fiber in a modifying liquid for modification.
The modified liquid is compounded by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol.
Wherein, the epoxy chloropropane is purchased from Shandong Chuang chemical industry Co., ltd., CAS number: 106-89-8.
Wherein, 1, 4-butyrolactone is purchased from Shandong Wang Biotechnology Co., ltd., CAS number: 96-48-0.
Wherein, nonylphenol is purchased from Jinan Liyang chemical industry Co., ltd., CAS number: 154-52-3.
Wherein, the imidazoline is purchased from Jinan Nuo chemical Co., ltd., CAS number: 504-74-5.
Wherein, isooctanol is purchased and placed in Shandong Chuang chemical industry Co., ltd., CAS number: 26952-21-6.
The modification method of the modified bamboo fiber comprises the following steps:
step 1), preparing a modified liquid:
100kg of water, 14kg of epichlorohydrin, 3kg of 1, 4-butyrolactone, 5kg of nonylphenol, 4kg of imidazoline and 17kg of isooctanol are put into a stirring kettle, and the stirring is carried out for 15min at a rotating speed of 10r/min, so as to prepare a modified liquid.
Step 2), soaking 20kg of bamboo fibers in 50kg of modified liquid at a rotating speed of 10r/min, continuously stirring for 3 hours, filtering out the bamboo fibers, and naturally air-drying to obtain the modified bamboo fibers.
Bamboo fibers are commercially available and have a length of 12mm.
The preparation method of the light heat-preservation composite foam concrete comprises the following steps:
step 1), 220kg of cement, 1110kg of aggregate and 14kg of modified bamboo fibers are put into a stirring kettle, the rotating speed is 60r/min, stirring is carried out for 5min, and the mixture is uniformly mixed to obtain a premix.
And 2) adding 100kg of water into the premix, stirring for 1min at the rotating speed of 45r/min, and uniformly mixing to obtain the concrete mixture.
And 3) foaming 33kg of foaming agent into foam through a foaming device, then adding the concrete mixture, and uniformly mixing to obtain the foam concrete mixture.
And 4) injecting the foam concrete mixture into a mould, carrying out water spraying maintenance for 3d, demoulding, carrying out water spraying maintenance for 7d, and standing and maintenance for 28d to obtain the light heat-insulation composite foam concrete.
The foaming device is a cement foaming machine and is purchased in the Shengtai mechanical factory in Ying county, RQ-40 type.
Comparative example 1
A light heat-insulating composite foam concrete consists of the following components in parts by weight:
water, cement, aggregate, foaming agent and water reducing agent.
Wherein, cement is Portland cement, runfeng cement, specification: p.o42.5r.
Wherein the aggregate is a compound of coarse aggregate and fine aggregate, and the mass ratio of the coarse aggregate to the fine aggregate is 10:8.
wherein the foaming agent is foam concrete foaming agent, which is purchased from Jiukun building materials Co., ltd.
Wherein the water reducing agent is a polycarboxylate water reducing agent and is purchased from Jinan spring pool new material Co.
The preparation method of the light heat-preservation composite foam concrete comprises the following steps:
step 1), adding 218kg of cement and 1105kg of aggregate into a stirring kettle, stirring for 5min at a rotating speed of 60r/min, and uniformly mixing to obtain a premix.
And 2) adding 100kg of water into the premix, stirring for 1min at a rotating speed of 45r/min, and uniformly mixing the concrete mixture.
And 3) foaming 32kg of foaming agent into foam through a foaming device, then adding the foam into the concrete mixture, and uniformly mixing to obtain the foam concrete mixture.
And 4) injecting the foam concrete mixture into a mould, carrying out water spraying maintenance for 3d, demoulding, carrying out water spraying maintenance for 7d, and standing and maintenance for 28d to obtain the light heat-insulation composite foam concrete.
The foaming device is a cement foaming machine and is purchased in the Shengtai mechanical factory in Ying county, RQ-40 type.
Comparative example 2
A light heat-insulating composite foam concrete consists of the following components in parts by weight:
water, cement, aggregate, foaming agent, bamboo fiber and water reducer.
Wherein, cement is Portland cement, runfeng cement, specification: p.o42.5r.
Wherein the aggregate is a compound of coarse aggregate and fine aggregate, and the mass ratio of the coarse aggregate to the fine aggregate is 10:8.
wherein the foaming agent is foam concrete foaming agent, which is purchased from Jiukun building materials Co., ltd.
Wherein the water reducing agent is a polycarboxylate water reducing agent and is purchased from Jinan spring pool new material Co.
Wherein, the bamboo fiber is commercially available and has a length of 12mm.
The preparation method of the light heat-preservation composite foam concrete comprises the following steps:
step 1), 218kg of cement, 1105kg of aggregate and 13.5kg of bamboo fibers are put into a stirring kettle, and stirred for 5min at the rotating speed of 60r/min, and the mixture is uniformly mixed to obtain a premix.
And 2) adding 100kg of water into the premix, stirring for 1min at a rotating speed of 45r/min, and uniformly mixing the concrete mixture.
And 3) foaming 32kg of foaming agent into foam through a foaming device, then adding the foam into the concrete mixture, and uniformly mixing to obtain the foam concrete mixture.
And 4) injecting the foam concrete mixture into a mould, carrying out water spraying maintenance for 3d, demoulding, carrying out water spraying maintenance for 7d, and standing and maintenance for 28d to obtain the light heat-insulation composite foam concrete.
The foaming device is a cement foaming machine and is purchased in the Shengtai mechanical factory in Ying county, RQ-40 type.
Comparative example 3
Compared with the example 2, the light heat-insulating composite foam concrete is only different in that:
and replacing the bamboo fibers with glass fibers in an equivalent way.
Wherein, glass fiber is commercially available and has a length of 12mm.
Comparative example 4
Compared with the example 2, the light heat-insulating composite foam concrete is only different in that:
in the modified liquid, sodium dodecyl sulfate is adopted to replace epichlorohydrin in equal quantity.
Wherein, the sodium dodecyl sulfate is purchased from Shandong brocade Gift chemical Co.
Comparative example 5
Compared with the example 2, the light heat-insulating composite foam concrete is only different in that:
in the modified liquid, diethanolamine is adopted to replace 1, 4-butyrolactone in equal quantity.
Wherein, diethanolamine is purchased from ataxia australian chemical industry limited company.
Comparative example 6
Compared with the example 2, the light heat-insulating composite foam concrete is only different in that:
in the modified liquid, the sodium salt of fatty alcohol ether sulfate is adopted to replace nonylphenol in equal quantity.
Wherein, fatty alcohol ether sodium sulfate is purchased from basf, model, FES 370.
Comparative example 7
Compared with the example 2, the light heat-insulating composite foam concrete is only different in that:
in the modified liquid, dodecyl betaine is adopted to replace imidazoline in an equivalent way.
Among them, dodecyl betaine is purchased from Anmei chemical technology (Jinan, inc.).
Comparative example 8
Compared with the example 2, the light heat-insulating composite foam concrete is only different in that:
in the modified liquid, the isooctanol is replaced by the isotridecyl alcohol polyoxyethylene ether in an equivalent way.
Wherein, the isomeric tridecanol polyoxyethylene ether is purchased in basf, the product specification is as follows: 1310TO-10.
Experiment 1
The test pieces of the light insulating composite foam concrete of each example and comparative example were tested for 7d compressive strength, 28d compressive strength and dry apparent density according to JC/T2357-2016 test method for Performance of foam concrete products.
The specific test data for experiment 1 are detailed in table 1.
TABLE 1
According to the comparison of the data of each example in Table 1 and comparative examples 1-2, when the bamboo fibers are modified by the modifying liquid compounded by water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol, the density of the prepared foam concrete is lower, the compressive strength is higher, the modified bamboo fibers are proved to be easy to penetrate through the foam and are not easy to break the foam, so that the density of the concrete of each example is lower than that of the concrete of comparative example 1 added with common bamboo fibers, and the modified bamboo fibers can be reinforced for air holes due to the fact that the modified bamboo fibers penetrate through the foam, so that the strength of the foam concrete (each example) added with the modified bamboo fibers is remarkably improved compared with that of the foam concrete (comparative example 1) without the added fibers, and the strength of the foam concrete added with the common bamboo fibers or glass fibers (comparative examples 2 and 3) is remarkably lower than that of each example, the reinforcing effect of the modified bamboo fibers on the foam concrete is proved to be remarkably higher than that of the common bamboo fibers or the foam concrete and the reinforcing effect of the foam concrete is not easy to rise.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (9)
1. A light heat-insulating composite foam concrete is characterized in that: comprises the following components in parts by mass:
100 parts of water;
215-220 parts of cement;
1100-1110 parts of aggregate;
31-33 parts of foaming agent;
13-14 parts of modified bamboo fiber;
2.7-2.9 parts of water reducer;
the modified bamboo fiber is obtained by soaking bamboo fiber in a modifying liquid for modification;
the modified liquid is prepared by compounding water, epichlorohydrin, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol.
2. The lightweight thermal insulation composite foam concrete according to claim 1, wherein: in the modified liquid, the mass ratio of water to epichlorohydrin to 1, 4-butyrolactone to nonylphenol to imidazoline to isooctanol is 100:12-14:1-3:3-5:2-4:15-17.
3. The lightweight thermal insulation composite foam concrete according to claim 2, wherein: in the modified liquid, the mass ratio of water to epichlorohydrin to 1, 4-butyrolactone to nonylphenol to imidazoline to isooctanol is 100:13:2:4:3:16.
4. a lightweight insulating composite foam concrete according to claim 3, wherein: the modification method of the modified bamboo fiber comprises the following steps:
step 1), preparing a modified liquid;
and 2) soaking the bamboo fibers in the modified liquid, continuously stirring for 2-3 hours, filtering out the bamboo fibers, and naturally air-drying to obtain the modified bamboo fibers.
5. The lightweight thermal insulation composite foam concrete according to claim 4, wherein: the specific steps for preparing the modified liquid in the step 1) are as follows:
adding water, epoxy chloropropane, 1, 4-butyrolactone, nonylphenol, imidazoline and isooctanol into a stirring kettle, stirring for 10-15min at a rotating speed of 5-10r/min, and obtaining a modified liquid.
6. The lightweight thermal insulation composite foam concrete according to claim 5, wherein: in the step 2), the rotating speed is 5-10r/min during stirring.
7. The lightweight thermal insulation composite foam concrete according to claim 1, wherein: the aggregate is a compound of coarse aggregate and fine aggregate.
8. The lightweight insulating composite foam concrete according to claim 7, wherein: the mass ratio of the coarse aggregate to the fine aggregate is 9.9-10.1:7.9-8.1.
9. A lightweight insulating composite foam concrete according to any one of claims 1 to 8, wherein: the preparation method of the light heat-preservation composite foam concrete comprises the following steps:
step 1), uniformly mixing cement, aggregate and modified bamboo fibers to obtain a premix;
step 2), adding water into the premix, and uniformly mixing the concrete mixture;
step 3), foaming the foaming agent into foam through a foaming device, adding the foam into the concrete mixture, and uniformly mixing to obtain the foam concrete mixture;
and 4) injecting the foam concrete mixture into a mould, curing and demoulding to obtain the light heat-insulating composite foam concrete.
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