CN103304190B - A kind of roof waterproof layer cast high impervious cracking resistance protective layer and manufacture craft thereof - Google Patents
A kind of roof waterproof layer cast high impervious cracking resistance protective layer and manufacture craft thereof Download PDFInfo
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- CN103304190B CN103304190B CN201310237703.1A CN201310237703A CN103304190B CN 103304190 B CN103304190 B CN 103304190B CN 201310237703 A CN201310237703 A CN 201310237703A CN 103304190 B CN103304190 B CN 103304190B
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Abstract
The present invention relates to the high impervious cracking resistance protective layer of a kind of roof waterproof layer cast, be made up of various starting material such as cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agents, in mixture, each component concentration with parts by weight calculating is: cement: 220 ~ 280 parts; Mineral admixture: 125 ~ 180 parts; Fine aggregate: 440 ~ 500 parts; Assorted fibre: 3.0 ~ 6.0 parts; Shrinking agent: 5.0 ~ 8.0 parts; Water reducer: 5.0 ~ 8.0 parts: water: 90 ~ 120 parts.Inventing useful effect is: roof waterproof layer cast solves conventional waterproof complex procedures with high impervious cracking resistance protective layer and manufacture craft thereof, limited efficiency or the higher problem of maintenance cost, in protective layer mortar, the use of a large amount of mineral admixture, is conducive to economizing on resources, protection of the environment; On the other hand, adopt the constructional method of high impervious cracking resistance protective layer simple, compatible with basic unit/structural sheet consistent after reinforcing, have good integral waterproofing effect, good endurance, maintenance cost is low, and social benefit is far-reaching.
Description
Technical field
The present invention relates to a kind of roof waterproof protective layer material, especially a kind of roof waterproof layer cast high impervious cracking resistance protective layer and manufacture craft thereof.
Background technology
High impervious cracking resistance protective layer design proposes the design theories such as function and structure integration, long lifetime, interface enhancing, and in main body, exploitation sees interfacial transition zone cement-base composite material, i.e. high impervious cracking resistance protective layer without thin.Design of components is cancelled thick, fine aggregate in conventional cement based composites, introduce ultra fine sand and high reactivity supplementary cementitious material, and mix and reduce the adjusting performance component such as component, cracking resistance component, refinement or elimination gather materials-Behavior of Hardened Cement Paste between interfacial transition zone, the improvement of the microtexture of material and the optimization of macro property are united.This technology is applicable to underground engineering structure concrete cover, and in ground lower room and underground structure, sub., vcehicular tunnel, submerged tunnel, underground common trench and mistake street underpass etc., engineering also can use.
The new method of design that roof waterproof layer cast proposes by high impervious cracking resistance protective layer and manufacture craft thereof; cancel thick, fine aggregate in conventional cement based composites; introduce ultra fine sand and high reactivity supplementary cementitious material; and mix and reduce the adjusting performance component such as component, cracking resistance component; refinement or elimination gather materials-Behavior of Hardened Cement Paste between interfacial transition zone, the improvement of the microtexture of material and the optimization of macro property are united.In construction process, save machinery and electric power energy consumption, save labor force, because this reducing construction cost, shortening the construction period, owner can be allowed to obtain returns of investment in advance.
Compared to other waterproof roof-working methods; high impervious cracking resistance protective layer by interface and pore structure optimization, introduce nanometer sized materials; develop the concrete admixture improving volume stability of concrete, optimised coagulation Soil Interface, optimization pore structure; cement-based material hydration heat can be reduced; reduce dry shrinkage and self-constriction; reduce porosity, improve the degree of compactness of cement-based material.Whole protective layer design can save material category, consumption, alleviates structural weight per square meter, simultaneously because of the advantage of its high tenacity, high-durability, secondary can be avoided to the full extent to keep in repair, for owner saves the maintenance costs in later stage.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, provides a kind of roof waterproof layer of low cost to pour into a mould by high impervious cracking resistance protective layer and manufacture craft thereof.
The present invention solves the technical scheme that its technical problem adopts: the high impervious cracking resistance protective layer of this roof waterproof layer cast, be made up of various starting material such as cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agents, in mixture, each component concentration with parts by weight calculating is: cement: 220 ~ 280 parts; Mineral admixture: 125 ~ 180 parts; Fine aggregate: 440 ~ 500 parts; Assorted fibre: 3.0 ~ 6.0 parts; Shrinking agent: 5.0 ~ 8.0 parts; Water reducer: 5.0 ~ 8.0 parts: water: 90 ~ 120 parts.
As preferably, the mixture that described mineral admixture is made up of following component raw material, in mixture, each component concentration with parts by weight calculating is: flyash: 80 ~ 150 parts; Silica flour: 30 ~ 60 parts.
As preferably, described fine particle framework material is mixture composed of the following components, and in mixture, each component concentration with listed as parts by weight is: 24 ~ 50 order fine aggregates: 200 ~ 280 parts; 50 ~ 80 order fine aggregates: 200 ~ 240 parts.
As preferably, be mixed with the mixture of following component composition in described water reducer, in mixture, each component concentration with listed as parts by weight is: silicone antifoam agent: 0.01 ~ 0.02 part; Air entrapment agent: 0.01 ~ 0.03 part.
This roof waterproof layer cast manufacture craft of high impervious cracking resistance protective layer; its step comprises: first adopt cement, mineral admixture, fine aggregate, shrinking agent and assorted fibre to be mixed in proportion prefabricated height impervious cracking resistance protective layer dry mash; then impervious for prefabricated high cracking resistance protective layer dry mash and water, water reducer are mixed in proportion stirring; stir 5min by normal stirring velocity, go out machine cast.
Inventing useful effect is: roof waterproof layer cast solves conventional waterproof complex procedures with high impervious cracking resistance protective layer and manufacture craft thereof, limited efficiency or the higher problem of maintenance cost, in protective layer mortar, the use of a large amount of mineral admixture, is conducive to economizing on resources, protection of the environment; On the other hand, adopt the constructional method of high impervious cracking resistance protective layer simple, compatible with basic unit/structural sheet consistent after reinforcing, have good integral waterproofing effect, good endurance, maintenance cost is low, and social benefit is far-reaching.
Accompanying drawing explanation
Fig. 1 is preparation technology's schema of prefabricated height impervious cracking resistance protective layer dry mash;
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
Embodiment: the high impervious cracking resistance protective layer of a kind of roof waterproof layer cast; be made up of various starting material such as cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agents, in mixture, each component concentration calculates with parts by weight.The proportioning of its various material is as shown in table 1:
The high impervious cracking resistance protective layer proportioning (kg/m of table 1
3)
A kind of roof waterproof layer cast high impervious cracking resistance protective layer and manufacture craft thereof; its gordian technique is: because the material component of height impervious cracking resistance protective layer is more; for reducing the error in dipping in its preparation process; strengthen its quality control; before roof waterproof construction; answer prefabricated height impervious cracking resistance protective layer dry mash, so that on-the-spot at roofing construction, only need impervious for prefabricated high cracking resistance protective layer dry mash and water, water reducer mix and blend by a certain percentage.So both simplify high impervious cracking resistance protective layer in roof waterproof construction operation, be also conducive to the quality control strengthening high impervious cracking resistance protective layer simultaneously.Fig. 1 is preparation technology's schema of prefabricated height impervious cracking resistance protective layer dry mash.
Cement used is P II 52.5 cement that conch cement limited-liability company produces, and its chemical group prejudice table 2, physicals is in table 3.
The chemical constitution of table 2 cement
The physicals of table 3 cement
Flyash used is II grade of flyash of Wuhan Yangluo power plant; Silica flour used is the SILICA FUME of metallurgical limited liability company of the gloomy Thailand of Wuhan Iron and Steel Plant, and median size is at 0.13 μm.The chemical constitution of flyash and silica flour and physicals thereof are in table 4.Flyash and silica flour are used as the closely knit component of filling of high impervious cracking resistance protective layer, i.e. mineral admixture.
The chemical constitution of table 4 flyash and silica flour and physicals thereof
Fine aggregate used to be fineness modulus be 1.50 quartz sand, by the quartz sand of 24 ~ 50 orders (namely particle diameter is at 0.27 ~ 0.70mm) and 50 ~ 80 orders (i.e. 0.18 ~ 0.27mm), 1:1 is formulated in mass ratio.
The kind of chemical admixture used and main performance index are in table 5.
The kind of table 5 chemical admixture and performance index
High efficiency water reducing agent have employed following 2 kinds: 1. go up the high dense type naphthalene series high-efficiency water-reducing agent of Mighty-150 (being called for short flower king Mighty-150) that seaflower king Chemical Co., Ltd. produces; 2. the polycarboxylic acid series high efficiency water reducing agent of W. R. Grace & Co of U.S. production, belong to early-strength type (being called for short Grace early-strength type), by ADVA180(water-reducing rate > 40%, solid content 39% ~ 43%) and DaraSetATF(water-reducing rate > 40%, solid content 39% ~ 43%) 3:7 is formulated in mass ratio.In addition, mix a small amount of silicone antifoam agent and air entrapment agent outside water reducer, volume is respectively 2/10000ths and 3/10000ths of water reducer.
Economization agent used be Jiangsu Botexin Materials Co., Ltd produce JM-SRA economization agent for concrete (be called for short rich special JM-SRA).Economization agent reduces component as high impervious cracking resistance protective layer mortar.
Assorted fibre used is the polypropylene fibre that Tian Hui Fibre Materials Inc produces, density is 0.91kg/m3, recommend volume volume to be that every side's concrete or mortar mix 0.10% ~ 0.40%, recommend quality volume to be that 0.91 ~ 3.64kg mixed by every side's concrete or mortar.1:1 is formulated in mass ratio by the polypropylene fibre of length 3mm and 10mm for assorted fibre.Assorted fibre is used as the cracking resistance component of high impervious cracking resistance protective layer mortar.
Above starting material should require to carry out precise in strict accordance with coordination in works, and weighing maximum allowable offset (by weight) should meet the following requirements: dry mash ± 1%, admixture ± 0.5%, mixing water ± 1%.All raw material should have ctf. and review report.
A kind of roof waterproof layer cast manufacture craft of high impervious cracking resistance protective layer; its concrete steps comprise: the components such as impervious for prefabricated high cracking resistance protective layer dry mash, water, water reducer are added stirrer successively by design mixture proportion example; stir 5min; going out the machine mensuration slump is 60mm; can carry out cast and be covered to structural sheet/basic unit, high impervious cracking resistance protective layer filling thickness is 20mm.
Before casting, test to the high impervious cracking resistance protective layer mortar of finished product, specific targets are as follows:
The slump controls at 50 ~ 80mm; 3d ultimate compression strength intensity>=15MPa; Ultimate compression strength>=35MPa when 7d goes out pond; 28d ultimate compression strength>=60MPa; Anti-penetration grade>=S40; Cl-spread coefficient≤0.8 × 10-13m
2/ s.
Waterproof layer waterproof paint used is the concrete solidifying DPS water-proof material forever that Yong Ning company of the U.S. produces, and is aqua, for the preparation of the fine and close waterproof layer of height.This water-proof material belongs to cementitious capillary waterproofing material, and it is 1 ~ 2mm that smearing thickness controls.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (4)
1. the high impervious cracking resistance protective layer of roof waterproof layer cast, is characterized in that: comprise cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agent, in mixture, each component concentration with parts by weight calculating is:
Cement: 220 ~ 280 parts;
Mineral admixture: 125 ~ 180 parts;
Fine aggregate: 440 ~ 500 parts;
Assorted fibre: 3.0 ~ 6.0 parts;
Shrinking agent: 5.0 ~ 8.0 parts;
Water reducer: 5.0 ~ 8.0 parts;
Water: 90 ~ 120 parts;
Wherein 1:1 is formulated in mass ratio by the polypropylene fibre of length 3mm and 10mm for assorted fibre;
The wherein mixture that is made up of following component raw material of mineral admixture, in mixture, each component concentration with parts by weight calculating is: flyash: 80 ~ 150 parts; Silica flour: 30 ~ 60 parts;
Wherein be mixed with the mixture of following component composition in water reducer, in mixture, each component concentration with listed as parts by weight is: silicone antifoam agent: 0.01 ~ 0.02 part; Air entrapment agent: 0.01 ~ 0.03 part.
2. the high impervious cracking resistance protective layer of roof waterproof layer cast according to claim 1, is characterized in that: described fine particle framework material is mixture composed of the following components, and in mixture, each component concentration with listed as parts by weight is:
24 ~ 50 order fine aggregates: 200 ~ 280 parts;
50 ~ 80 order fine aggregates: 200 ~ 240 parts.
3. the roof waterproof layer cast according to claim 1 manufacture craft of high impervious cracking resistance protective layer; its step comprises: first adopt cement, mineral admixture, fine aggregate, shrinking agent and assorted fibre to be mixed in proportion prefabricated height impervious cracking resistance protective layer dry mash; then impervious for prefabricated high cracking resistance protective layer dry mash and water, water reducer are mixed in proportion stirring; stir by normal stirring velocity and be no less than 3min, go out machine cast.
4. the roof waterproof layer cast according to claim 3 manufacture craft of high impervious cracking resistance protective layer; its step comprises: waterproof layer waterproof paint used is the concrete solidifying DPS water-proof material forever that Yong Ning company of the U.S. produces; for aqua; for the preparation of the fine and close waterproof layer of height; this water-proof material belongs to cementitious capillary waterproofing material, and smearing thickness controls as 1-2mm.
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| CN201310237703.1A CN103304190B (en) | 2013-06-14 | 2013-06-14 | A kind of roof waterproof layer cast high impervious cracking resistance protective layer and manufacture craft thereof |
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| CN104314097B (en) * | 2014-09-25 | 2016-08-31 | 国家电网公司 | A kind of electric power line pole tower gradient anti-corrosion concrete basis |
| CN107827411A (en) * | 2017-10-13 | 2018-03-23 | 广东水电二局股份有限公司 | A kind of compound base concrete of inductile and RCCD impervious barrier prepared therefrom |
| CN111470836B (en) * | 2020-06-11 | 2021-09-28 | 陕西拉发纪新材料科技有限公司 | Acid corrosion resistant spray material suitable for construction of dimeric opencut coal mine and preparation method thereof |
| CN116409967A (en) * | 2023-03-20 | 2023-07-11 | 中国五冶集团有限公司 | Roof crack-resistant protective layer and construction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264680A (en) * | 2008-02-18 | 2008-09-17 | 南昌大学 | Sandwich concrete with ultra-low ion transmission performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101264680A (en) * | 2008-02-18 | 2008-09-17 | 南昌大学 | Sandwich concrete with ultra-low ion transmission performance |
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