CN106800399A - Modified ECC concrete sound barrier panels of a kind of high-strength and high-ductility low viscosity and preparation method thereof - Google Patents
Modified ECC concrete sound barrier panels of a kind of high-strength and high-ductility low viscosity and preparation method thereof Download PDFInfo
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- CN106800399A CN106800399A CN201710160780.XA CN201710160780A CN106800399A CN 106800399 A CN106800399 A CN 106800399A CN 201710160780 A CN201710160780 A CN 201710160780A CN 106800399 A CN106800399 A CN 106800399A
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
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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
- C04B2111/52—Sound-insulating 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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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses modified ECC concrete sound barrier panels of a kind of high-strength and high-ductility low viscosity and preparation method thereof, it is by concrete unit plate and is covered in concrete unit plate and meets the pottery sand concrete absorbent treatment on sound face and constitutes；The concrete unit plate by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：(0.05‑0.15)：(0.05‑0.15)：(0.25‑0.35)：1.3：(0.05‑0.08)：(0.005‑0.01)：(0.2‑0.25)：(0.20‑0.25)；The pottery sand concrete absorbent treatment by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：(0.05‑0.15)：(0.05‑0.15)：(0.25‑0.35)：(0.2‑0.25)：1.3：(0.05‑0.08)：(0.005‑0.01)：(0.2‑0.25)：(0.20‑0.25).The viscosity of modified ECC concrete sound barrier panels of the invention is low, intensity is high, toughness is high, can pour sheet-type concrete acoustical barrier unit, overcomes load weight, transport and the too high shortcoming of installation cost.
Description
Technical field
The present invention relates to the technical field of sound barrier, in particular to a kind of modified ECC concrete of high-strength and high-ductility low viscosity
Sound barrier panel and preparation method thereof.
Background technology
According to《The experience of Hong Kong track traffic and its enlightenment》(《Town and regional planning is studied》, Ou Yangnanjiang, Chen Zhong
Flat, Yang Jingsheng makees) understand, the heavy wall concrete acoustical barrier of Hong Kong track traffic is experience have shown that its defening effect is very good, and mixes
Solidifying soil maintenance amount is few, low cost.But in sound barrier totally-enclosed for high-speed railway, technical difficulty is big, need to solve material
A series of problems, such as material performance, structure construction, aerodynamic force, structural vibration.At present, the concrete cover of sound barrier need to use high-strength
Degree, high tenacity, the material of high cracking resistance, weight is mitigated to reduce physical dimension, meets requirement of the vibratory impulse to toughness of material,
Improve the durability of sound barrier.
However, there is following deficiency in existing acoustic barrier material：(1) stretching strain of existing normal concrete structural limits is very
Small, tensile strength is low, easy to crack, poor impact toughness；(2) RPC (RPC) draws compression strength very high, but chi
Very little hour fragility is big；(3) sound barrier weight about 12% can be mitigated as cover plate materials using properties of fiber reinforced lightweight aggregate concrete,
But cause cover plate materials tensile strength low, and toughness is undesirable；(4) common high-performance fiber concrete is generally using larger
Steel fibre volume volume, high cost, weight is big, constructional difficulties, and its crack control width is difficult control in hundreds of microns
Within, substantially can not control critical eigenvalue width again especially when strain is more than 1.5%.
The content of the invention
Present invention aim to solve the deficiency of above-mentioned background technology, and providing one kind can meet sound barrier sound insulation
Demand, can effectively solve a kind of modified ECC concrete acoustical barriers of high-strength and high-ductility low viscosity of sound barrier panel unit load weight again
Plate, have the advantages that simple structure, light weight, be easily installed, the acoustically effective that insulates against sound it is good, additionally provide a kind of concrete sound-screen
The preparation method of barrier.
To achieve the above object, the modified ECC concrete acoustical barriers of a kind of high-strength and high-ductility low viscosity provided by the present invention
Plate, it is by concrete unit plate and is covered in concrete unit plate and meets the pottery sand concrete absorbent treatment on sound face and constitutes；It is described mixed
Solidifying soil cell board by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA
Fiber：Steel fibre：Water=1：(0.05-0.15)：(0.05-0.15)：(0.25-0.35)：1.3：(0.05-0.08)：(0.005-
0.01)：(0.2-0.25)：(0.20-0.25)；The pottery sand concrete absorbent treatment (2) by following weight than component prepare and
Into：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：(0.05-0.15)：
(0.05-0.15)：(0.25-0.35)：(0.2-0.25)：1.3：(0.05-0.08)：(0.005-0.01)：(0.2-0.25)：
(0.20-0.25)。
Preferably, the concrete unit plate by following weight than component be prepared from, cement：Fine coal
Ash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：(0.09-0.12)：(0.09-0.12)：
(0.29-0.32)：1.3：(0.06-0.08)：(0.006-0.008)：(0.22-0.24)：(0.22-0.24)；The pottery sand is mixed
Solidifying soil absorbent treatment by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Diminishing
Agent：PVA fibers：Steel fibre：Water=1：(0.09-0.12)：(0.09-0.12)：(0.29-0.32)：(0.22-0.24)：1.3：
(0.06-0.08)：(0.006-0.008)：(0.22-0.24)：(0.22-0.24).
As preferred plan ground, the concrete unit plate by following weight than component be prepared from：Cement：Fine coal
Ash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.1：0.1：0.3：1.3：0.07：0.07：
0.23：0.23；The pottery sand concrete absorbent treatment by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon
Ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.1：0.1：0.3：0.23：1.3：0.07：0.07：
0.23：0.23.
Further, the cement is 52.5 grades of Portland cements.
Further, a diameter of 18-20 μm of the PVA fibers, its tensile strength is 1000-1200MPa.
Further, the particle diameter 40-200 mesh of the quartz sand, the particle diameter of the pottery sand is 105 μm -355 μm.
Further, the thickness of the concrete unit plate is 4-8cm, and the thickness of the pottery sand concrete absorbent treatment is 2-
5cm。
The preparation method of the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity of the invention, comprises the following steps：
1) preparation of low viscous high-strength and high-ductility concrete：First by weight ratio by cement, flyash, microballon, silicon ash, quartz
Sand, PVA fibers are poured into container, dry mixing 4-5 minutes, sequentially add steel fibre, the water dissolved with water reducer, stir 10-12
Minute, obtain low viscous high-strength and high-ductility concrete；
2) preparation of concrete unit plate：By step 1) obtained by low viscous high-strength and high-ductility concrete pour into mould,
Horizontal vibration 1-2 minutes on a vibration table, the thickness of concrete unit plate was 4-8cm, obtains concrete unit plate；
3) preparation of pottery sand concrete：First by weight ratio by cement, flyash, microballon, silicon ash, pottery sand, quartz sand,
PVA fibers are poured into container, dry mixing 4-5 minutes；Sequentially add steel fibre, the water dissolved with water reducer, 10-12 points of stirring
Clock, obtains pottery sand concrete；
4) preparation of concrete acoustical barrier：By step 3) obtained by pottery sand concrete be directly cast in step 2) coagulation
Meeting on sound face for native cell board, horizontal vibration 3-5 minutes on a vibration table, has obvious pulp to be defined, pottery sand concrete by surface
The thickness for pouring is 2-5cm；Test specimen is obtained after shaping, test specimen is then moved into fog room, 20- is conserved under the conditions of 78-22 DEG C
The 24h demouldings, then by test piece maintenance 18-20 days, that is, obtain the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity.
Compared with prior art, the invention has the advantages that：
First, high-strength and high-ductility low viscosity prepared by the present invention is modified, the compression strength of ECC concrete sound barrier panels reaches
120-150MPa, rupture strength 18-35MPa, concrete divergence reach 120-150mm, and toughness index GF reaches 1.1 × 106-
1.8×106Significantly larger than the compression strength 40Mpa of the normal concrete sound barrier of prior art, rupture strength 1.75Mpa, expand
Latitude of emulsion 50mm, is so conducive to the preparation of concrete acoustical barrier to be molded, and reduces the defect of concrete acoustical barrier, is capable of achieving coagulation
The thinning treatment of native sound barrier, pours the concrete acoustical barrier cell board of ultra-thin large volume.
Second, ECC (Engineered Cementitious Composites, ductility fiber reinforcement water high of the invention
Cement-based composite material, abbreviation ECC) as a kind of concrete material with certain strain-hardening property, itself have relatively higher
Adaptability to changes, be combined with PVA fibers, steel fibre, can further improve compression strength and toughness.
Third, sound barrier concrete unit plate of the invention realizes primary concreting with absorbent treatment, be conducive to coagulation pedosphere
Face combines, and improves the durability of concrete, while it is easy to the disposable installation of concrete acoustical barrier, it is time saving and energy saving, improve peace
The efficiency of dress, has saved cost of labor.
Fourth, the viscosity of the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity of the invention is low, intensity is high, tough
Property it is high, sheet-type concrete acoustical barrier unit can be poured, overcome concrete unit plate load weight, transport and installation cost it is too high
The shortcomings of.
Brief description of the drawings
Fig. 1 is the structural representation of the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity prepared by embodiment 1.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1：
A kind of modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity, by concrete unit plate 1 and are covered in coagulation
The pottery sand concrete absorbent treatment 2 that native cell board 1 is met on sound face is constituted, and the thickness of concrete unit plate 1 is 4-8cm, pottery sand coagulation
The thickness of native absorbent treatment 2 be 2-5cm, concrete unit plate 1 by following weight than component be prepared from：Cement：Flyash：It is micro-
Pearl：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.05：0.05：0.25：1.3：0.05：0.005：0.2：
0.20；
Pottery sand concrete absorbent treatment 2 by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Pottery
Sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.15：0.15：0.35：0.25：1.3：0.08：0.01：0.25：
0.25。
The preparation method of the modified ECC concrete sound barrier panels of above-mentioned high-strength and high-ductility low viscosity, comprises the following steps：
1) preparation of low viscous high-strength and high-ductility concrete：First by weight ratio by cement, flyash, microballon, silicon ash, quartz
Sand, PVA fibers are poured into container, dry mixing 4-5 minutes, sequentially add steel fibre, the water dissolved with water reducer, stir 10-12
Minute, obtain low viscous high-strength and high-ductility concrete；
2) preparation of concrete unit plate：By step 1) obtained by low viscous high-strength and high-ductility concrete pour into mould,
Horizontal vibration 1-2 minutes on a vibration table, the thickness of concrete unit plate was 4-8cm, obtains concrete unit plate；
3) preparation of pottery sand concrete：First by weight ratio by cement, flyash, microballon, silicon ash, pottery sand, quartz sand,
PVA fibers are poured into container, dry mixing 4-5 minutes；Sequentially add steel fibre, the water dissolved with water reducer, 10-12 points of stirring
Clock, obtains pottery sand concrete；
4) preparation of concrete acoustical barrier：By step 3) obtained by pottery sand concrete be directly cast in step 2) coagulation
Meeting on sound face for native cell board, horizontal vibration 3-5 minutes on a vibration table, has obvious pulp to be defined, pottery sand concrete by surface
The thickness for pouring is 2-5cm；Test specimen is obtained after shaping, test specimen is then moved into fog room, 20- is conserved under the conditions of 78-22 DEG C
The 24h demouldings, then by test piece maintenance 18-20 days, that is, obtain the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity.
Embodiment 2：
Preparation method with embodiment 1 is identical, and difference is：The concrete unit plate 1 by following weight than
Component is prepared from：Cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.15：
0.15：0.35：1.3：0.08：0.01：0.25：0.25；
The pottery sand concrete absorbent treatment 2 by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon
Ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.05：0.05：0.25：0.2：1.3：0.05：0.005：
0.2：0.20.
Embodiment 3
Preparation method with embodiment 1 is identical, and difference is：The concrete unit plate 1 by following weight than
Component is prepared from, cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.12：
0.12：0.32：1.3：0.08：0.008：0.24：0.24；The pottery sand concrete absorbent treatment 2 by following weight than component system
It is standby to form：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.12：
0.12：0.32：0.24：1.3：0.08：0.008：0.24：0.24.
Embodiment 4
Preparation method with embodiment 1 is identical, and difference is：The concrete unit plate 1 by following weight than
Component is prepared from, cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.09：
0.09：0.29：1.3：0.06：0.006：0.22：0.22；The pottery sand concrete absorbent treatment 2 by following weight than component system
It is standby to form：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.09：
0.09：0.29：0.22：1.3：0.06：0.006：0.22：0.22.
Embodiment 5
Preparation method with embodiment 1 is identical, and difference is：The concrete unit plate 1 by following weight than
Component is prepared from：Cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.1：
0.1：0.3：1.3：0.07：0.07：0.23：0.23；The pottery sand concrete absorbent treatment 2 by following weight than component prepare and
Into：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：0.1：0.1：0.3：
0.23：1.3：0.07：0.07：0.23：0.23.
Effect example：
Embodiment 1-5 and normal concrete sound barrier are carried out into correlated performance test under the same conditions, as a result such as table
1：
Table 1
| Project | Compression strength (MPa) | Rupture strength (MPa) | Divergence (mm) | |
| Embodiment 1 | 120 | 18 | 120 | |
| Embodiment 2 | 125 | 30 | 121 | |
| Embodiment 3 | 135 | 35 | 136 | |
| Embodiment 4 | 140 | 29 | 145 | |
| Embodiment 5 | 150 | 35 | 150 | |
| Normal concrete sound barrier | 40 | 1.75 | 50 | 150 |
As seen from the above table, the pressure resistance of the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity that prepared by the present invention
Degree reaches 120-150MPa, rupture strength 18-35MPa, and concrete divergence reaches 120-150mm, and toughness index GF reaches 1.1
×106-1.8×106Significantly larger than the compression strength 40Mpa of the normal concrete sound barrier of prior art, rupture strength
1.75Mpa, divergence 50mm, are so conducive to the preparation of concrete acoustical barrier to be molded, and reduce the defect of concrete acoustical barrier,
The thinning treatment of concrete acoustical barrier is capable of achieving, the concrete acoustical barrier cell board of ultra-thin large volume is poured.
The above, specific embodiment only of the invention, it is noted that any those of ordinary skill in the art exist
Disclosed herein technical scope in, the change or replacement that can be readily occurred in, should all cover protection scope of the present invention it
It is interior.
Claims (9)
1. modified ECC concrete sound barrier panels of a kind of high-strength and high-ductility low viscosity, it is characterised in that：It is by concrete unit plate
(1) and it is covered in pottery sand concrete absorbent treatment (2) that concrete unit plate (1) met on sound face and constitutes；The concrete unit plate
(1) by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Quartz sand：Water reducer：PVA fibers：Steel
Fiber：Water=1：(0.05-0.15)：(0.05-0.15)：(0.25-0.35)：1.3：(0.05-0.08)：(0.005-0.01)：
(0.2-0.25)：(0.20-0.25)；The pottery sand concrete absorbent treatment (2) by following weight than component be prepared from：Water
Mud：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：(0.05-0.15)：
(0.05-0.15)：(0.25-0.35)：(0.2-0.25)：1.3：(0.05-0.08)：(0.005-0.01)：(0.2-0.25)：
(0.20-0.25)。
2. modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 1, it is characterised in that：Institute
State concrete unit plate (1) by following weight than component be prepared from, cement：Flyash：Microballon：Silicon ash：Quartz sand：Diminishing
Agent：PVA fibers：Steel fibre：Water=1：(0.09-0.12)：(0.09-0.12)：(0.29-0.32)：1.3：(0.06-0.08)：
(0.006-0.008)：(0.22-0.24)：(0.22-0.24)；The pottery sand concrete absorbent treatment (2) by following weight than group
Divide and be prepared from：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：PVA fibers：Steel fibre：Water=1：
(0.09-0.12)：(0.09-0.12)：(0.29-0.32)：(0.22-0.24)：1.3：(0.06-0.08)：(0.006-
0.008)：(0.22-0.24)：(0.22-0.24).
3. modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 2, it is characterised in that：Institute
State concrete unit plate (1) by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Quartz sand：Diminishing
Agent：PVA fibers：Steel fibre：Water=1：0.1：0.1：0.3：1.3：0.07：0.07：0.23：0.23；The pottery sand concrete is inhaled
Sound layer (2) by following weight than component be prepared from：Cement：Flyash：Microballon：Silicon ash：Pottery sand：Quartz sand：Water reducer：
PVA fibers：Steel fibre：Water=1：0.1：0.1：0.3：0.23：1.3：0.07：0.07：0.23：0.23.
4. the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 1 or 2 or 3, its feature exists
In：The cement is 52.5 grades of Portland cements.
5. the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 1 or 2 or 3, its feature exists
In：A diameter of 18-20 μm of the PVA fibers, its tensile strength is 1000-1200MPa.
6. the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 1 or 2 or 3, its feature exists
In：The particle diameter 40-200 mesh of the quartz sand.
7. the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 1 or 2 or 3, its feature exists
In：The particle diameter of the pottery sand is 105 μm -355 μm.
8. the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity according to claim 1 or 2 or 3, its feature exists
In：The thickness of the concrete unit plate (1) is 4-8cm, and the thickness of the pottery sand concrete absorbent treatment (2) is 2-5cm.
9. a kind of system of the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity described in claim 1-8 any one
Preparation Method, it is characterised in that comprise the following steps：
1) preparation of low viscous high-strength and high-ductility concrete：First by weight ratio by cement, flyash, microballon, silicon ash, quartz sand,
PVA fibers are poured into container, dry mixing 4-5 minutes, sequentially add steel fibre, the water dissolved with water reducer, 10-12 points of stirring
Clock, obtains low viscous high-strength and high-ductility concrete；
2) preparation of concrete unit plate：By step 1) obtained by low viscous high-strength and high-ductility concrete pour into mould, shaking
Horizontal vibration 1-2 minutes on dynamic platform, the thickness of concrete unit plate is 4-8cm, obtains concrete unit plate；
3) preparation of pottery sand concrete：It is first by weight ratio that cement, flyash, microballon, silicon ash, pottery sand, quartz sand, PVA is fine
Dimension is poured into container, dry mixing 4-5 minutes；Steel fibre, the water dissolved with water reducer are sequentially added, is stirred 10-12 minutes, obtained
Pottery sand concrete；
4) preparation of concrete acoustical barrier：By step 3) obtained by pottery sand concrete be directly cast in step 2) concrete list
Meeting on sound face for first plate, horizontal vibration 3-5 minutes on a vibration table, has obvious pulp to be defined, pottery sand concreting by surface
Thickness be 2-5cm；Test specimen is obtained after shaping, test specimen is then moved into fog room, 20-24h conserved under the conditions of 78-22 DEG C and is taken off
Mould, then by test piece maintenance 18-20 days, that is, obtain the modified ECC concrete sound barrier panels of high-strength and high-ductility low viscosity.
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|---|---|---|---|
| CN201710160780.XA CN106800399B (en) | 2017-03-17 | 2017-03-17 | High-strength high-toughness low-viscosity modified ECC concrete sound barrier board and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113529597A (en) * | 2021-07-26 | 2021-10-22 | 中建西部建设建材科学研究院有限公司 | Landscape type micro-particle sound insulation screen and preparation method and installation method thereof |
| CN114368977A (en) * | 2021-12-23 | 2022-04-19 | 中建科技集团有限公司 | Cement-based fly ash floating bead sound absorption material and preparation method thereof |
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