CN103304190A - High impervious and anti-cracking protection layer for casting roofing waterproof layer and manufacturing process thereof - Google Patents
High impervious and anti-cracking protection layer for casting roofing waterproof layer and manufacturing process thereof Download PDFInfo
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- CN103304190A CN103304190A CN2013102377031A CN201310237703A CN103304190A CN 103304190 A CN103304190 A CN 103304190A CN 2013102377031 A CN2013102377031 A CN 2013102377031A CN 201310237703 A CN201310237703 A CN 201310237703A CN 103304190 A CN103304190 A CN 103304190A
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Abstract
The invention relates to a high impervious and anti-cracking protection layer for casting a roofing waterproof layer. The high impervious and anti-cracking protection layer comprises cement, a mineral admixture, hybrid fiber, a fine grain framework material, a shrinkage reducing agent, a high-efficient water reducing agent and other various raw materials, and the mixture comprises the following components in parts by weight: 220-280 parts of cement, 125-180 parts of mineral admixture, 440-500 parts of fine framework, 3.0-6.0 parts of hybrid fiber, 5.0-8.0 parts of shrinkage reducing agent, 5.0-8.0 parts of water reducing agent and 90-120 parts of water. The high impervious and anti-cracking protection layer disclosed by the invention has the beneficial effects that the high impervious and anti-cracking protection layer for casting of the roofing waterproof layer and a manufacturing process thereof can solve the problems that a traditional waterproofing process step is complex, the effects are limited or the maintenance cost is higher, and a large quantity of the mineral admixture is used in mortar of the protection layer so as to be favorable for saving resources and protecting the environment; and on the other hand, a construction method by adopting the high impervious and anti-cracking protection layer is simple, and the high impervious and anti-cracking protection layer can realize compatibility and consistency with a base layer/a structure layer after being reinforced, and further has the advantages of good overall waterproof effect, good durability, low maintenance cost and far-reaching social benefits.
Description
Technical field
The present invention relates to a kind of roof waterproof protective layer material, especially a kind of roof waterproof layer is poured into a mould with 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 exploitation is without thin interfacial transition zone cement-base composite material, the i.e. high impervious cracking resistance protective layer seen on the main body.Cancel thick, fine aggregate in traditional cement-base composite material on the design of components, introduce special fine sand and high reactivity supplementary cementitious material, and mix performances such as reducing component, cracking resistance component and adjust 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 the underground engineering structure concrete cover, also can use in aspect engineerings such as ground lower room and underground structure, sub., vcehicular tunnel, submerged tunnel, underground common trench and mistake street underpass.
The new design method that the roof waterproof layer cast proposes with high impervious cracking resistance protective layer and manufacture craft thereof; cancel thick, fine aggregate in traditional cement-base composite material; introduce special fine sand and high reactivity supplementary cementitious material; and mix performances such as reducing component, cracking resistance component and adjust 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.Save machinery and electric power energy consumption in construction process, therefore labor savings has reduced construction cost, has shortened the construction period, can allow the owner obtain in advance returns of investment.
Than other waterproof roof-working methods; high impervious cracking resistance protective layer by interface and pore structure optimization, introduce the nanoscale material; develop the concrete admixture that improves volume stability of concrete, optimization concrete interface, optimizes pore structure; can reduce the cement-based material hydration heat; reduce dry shrinkage and self-constriction; reduce porosity, improve the degree of compactness of cement-based material.But whole protective layer design economical with materials kind, consumption alleviate structural weight per square meter, simultaneously because of the advantage of its high tenacity, high-durability, can avoid to the full extent the secondary maintenance, have saved the maintenance costs in later stage for the owner.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, provides a kind of cheaply roof waterproof layer to pour into a mould with high impervious cracking resistance protective layer and manufacture craft thereof.
The present invention solves the technical scheme that its technical problem adopts: this roof waterproof layer is poured into a mould with high impervious cracking resistance protective layer, be comprised of various starting material such as cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agents, each component concentration is calculated as with parts by weight in the mixture: 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 comprised of following component raw material, each component concentration is calculated as with parts by weight in the mixture: flyash: 80～150 parts; Silica flour: 30～60 parts.
As preferably, described fine particle framework material is mixture composed of the following components, and each component concentration is take listed as parts by weight as 24～50 order fine aggregates: 200～280 parts in the mixture; 50～80 order fine aggregates: 200～240 parts.
As preferably, be mixed with the mixture that following component forms in the described water reducer, each component concentration is take listed as parts by weight as silicone antifoam agent: 0.01～0.02 part in the mixture; Air entrapment agent: 0.01～0.03 part.
This roof waterproof layer is poured into a mould the manufacture craft with high impervious cracking resistance protective layer; its step comprises: at first adopt cement, mineral admixture, fine aggregate, shrinking agent and assorted fibre to be mixed in proportion the impervious cracking resistance protective layer of prefabricated height dry mash; then prefabricated height impervious cracking resistance protective layer dry mash and water, water reducer are mixed in proportion stirring; stir 5min by normal stirring velocity, go out the machine cast.
Inventing useful effect is: the roof waterproof layer cast has solved the conventional waterproof complex procedures with high impervious cracking resistance protective layer and manufacture craft thereof, the problem that effect is limited or maintenance cost is higher, the use of a large amount of mineral admixtures is conducive to economize on resources protection of the environment in the protective layer mortar; 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 of drawings
Fig. 1 is preparation technology's schema of the impervious cracking resistance protective layer of prefabricated height dry mash;
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
Embodiment: a kind of roof waterproof layer is poured into a mould with high impervious cracking resistance protective layer; be comprised of various starting material such as cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agents, each component concentration calculates with parts by weight in the mixture.The proportioning of its various materials 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 is poured into a mould with high impervious cracking resistance protective layer and manufacture craft thereof; its gordian technique is: because the material component of high 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; should the impervious cracking resistance protective layer of prefabricated height dry mash so that on-the-spot at roofing construction, only need to prefabricated height impervious cracking resistance protective layer dry mash and water, water reducer by a certain percentage mix and blend get final product.So both simplify high impervious cracking resistance protective layer in the roof waterproof construction operation, also be conducive to strengthen simultaneously the quality control of high impervious cracking resistance protective layer.Fig. 1 is preparation technology's schema of the impervious cracking resistance protective layer of prefabricated height dry mash.
Used cement is P II 52.5 cement that conch cement limited-liability company produces, and its chemical constitution sees Table 2, and physicals sees Table 3.
The chemical constitution of table 2 cement
The physicals of table 3 cement
Used flyash is the II level flyash of Wuhan Yangluo power plant; Used silica flour is the SILICA FUME of the metallurgical limited liability company of the gloomy Thailand of Wuhan Iron and Steel Plant, and median size is at 0.13 μ m.Chemical constitution and the physicals thereof of flyash and silica flour see Table 4.Flyash and silica flour are 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
Used fine aggregate is that fineness modulus is 1.50 quartz sand, (is that (namely 1:1 is formulated in mass ratio for 0.18～0.27mm) quartz sand with 50～80 orders 0.27～0.70mm) for particle diameter by 24～50 orders.
Kind and the main performance index of used chemical admixture see Table 5.
The kind of table 5 chemical admixture and performance index
High efficiency water reducing agent has adopted 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 chemistry company limited produces; 2. the polycarboxylic acid series high efficiency water reducing agent produced of U.S. W. R. Grace ﹠ Co, belong to early-strength type (being called for short the Grace early-strength type), by ADVA180(water-reducing rate＞40%, solid content 39%～43%) with DaraSet ATF(water-reducing rate＞40%, solid content 39%～43%) 3:7 is formulated in mass ratio.In addition, water reducer is mixed a small amount of silicone antifoam agent and air entrapment agent outward, and volume is respectively 2/10000ths and 3/10000ths of water reducer.
Used economization agent be Jiangsu Botexin Materials Co., Ltd produce JM-SRA economization agent for concrete (being called for short rich special JM-SRA).Economization agent is as the component of reducing of high impervious cracking resistance protective layer mortar.
Used assorted fibre is day polypropylene fibre of remittance Fibre Materials Inc production, density is 0.91kg/m3, recommending the volume volume is that every side's concrete or mortar mix 0.10%～0.40%, and recommending the quality volume is that every side's concrete or mortar are mixed 0.91～3.64kg.1:1 is formulated in mass ratio by the polypropylene fibre of length 3mm and 10mm for assorted fibre.Assorted fibre is as the cracking resistance component of high impervious cracking resistance protective layer mortar.
Above starting material should require to carry out accurate weighing in strict accordance with the construction proportioning, 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 is poured into a mould the manufacture craft with high impervious cracking resistance protective layer; its concrete steps comprise: the components such as the impervious cracking resistance protective layer of prefabricated height dry mash, water, water reducer are added stirrer successively by the design mixture proportion example; stir 5min; going out the machine mensuration slump is 60mm; can pour into a mould and be covered to structural sheet/basic unit, high impervious cracking resistance protective layer filling thickness is 20mm.
Before cast, the high impervious cracking resistance protective layer mortar of finished product to be tested, specific targets are as follows:
The slump is controlled at 50～80mm; 3d ultimate compression strength intensity 〉=15MPa; Ultimate compression strength 〉=35MPa when 7d goes out the pond; 28d ultimate compression strength 〉=60MPa; Anti-penetration grade 〉=S40; Cl-spread coefficient≤0.8 * 10-13m
2/ s.
The used waterproof paint of waterproof layer is that the concrete of forever solidifying company production of the U.S. coagulates the DPS water-proof material forever, 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 smearing thickness is controlled to be 1～2mm.
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 requirement of the present invention.
Claims (6)
1. a roof waterproof layer is poured into a mould with high impervious cracking resistance protective layer; it is characterized in that: be comprised of various starting material such as cement, mineral admixture, assorted fibre, fine particle framework material, economization agent and high efficiency water reducing agents, each component concentration is calculated as with parts by weight in the mixture:
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.
2. roof waterproof layer according to claim 1 is poured into a mould with high impervious cracking resistance protective layer, it is characterized in that: the mixture that described mineral admixture is comprised of following component raw material, and each component concentration is calculated as with parts by weight in the mixture:
Flyash: 80～150 parts;
Silica flour: 30～60 parts.
3. roof waterproof layer according to claim 1 cast is with high impervious cracking resistance protective layer, and it is characterized in that: described fine particle framework material is mixture composed of the following components, in the mixture each component concentration take listed as parts by weight as:
24～50 order fine aggregates: 200～280 parts;
50～80 order fine aggregates: 200～240 parts.
4. roof waterproof layer according to claim 1 cast is characterized in that with high impervious cracking resistance protective layer: be mixed with the mixture of following component composition in the described water reducer, in the mixture each component concentration take listed as parts by weight as:
Silicone antifoam agent: 0.01～0.02 part;
Air entrapment agent: 0.01～0.03 part.
5. roof waterproof layer according to claim 1 is poured into a mould the manufacture craft with high impervious cracking resistance protective layer; its step comprises: at first adopt cement, mineral admixture, fine aggregate, shrinking agent and assorted fibre to be mixed in proportion the impervious cracking resistance protective layer of prefabricated height dry mash; then prefabricated height impervious cracking resistance protective layer dry mash and water, water reducer are mixed in proportion stirring; be no less than 3min by normal stirring velocity stirring, go out the machine cast.
6. roof waterproof layer according to claim 5 is poured into a mould the manufacture craft with high impervious cracking resistance protective layer; its step comprises: the used waterproof paint of waterproof layer is that the concrete of forever solidifying company production of the U.S. coagulates the DPS water-proof material forever; be 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 is controlled to be 1-2mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314097A (en) * | 2014-09-25 | 2015-01-28 | 国家电网公司 | Electric transmission line pole and tower gradient anti-corrosion concrete foundation |
| 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 |
| CN111470836A (en) * | 2020-06-11 | 2020-07-31 | 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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2013
- 2013-06-14 CN CN201310237703.1A patent/CN103304190B/en not_active Expired - Fee Related
Patent 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314097A (en) * | 2014-09-25 | 2015-01-28 | 国家电网公司 | Electric transmission line pole and tower gradient anti-corrosion concrete foundation |
| 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 |
| WO2019071704A1 (en) * | 2017-10-13 | 2019-04-18 | 广东水电二局股份有限公司 | Low-plasticity composite base concrete and roller-compacted concrete dam impervious layer produced therefrom |
| CN111470836A (en) * | 2020-06-11 | 2020-07-31 | 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 |
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