CN104446245A - Super early-strength mortar - Google Patents
Super early-strength mortar Download PDFInfo
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- CN104446245A CN104446245A CN201410669544.7A CN201410669544A CN104446245A CN 104446245 A CN104446245 A CN 104446245A CN 201410669544 A CN201410669544 A CN 201410669544A CN 104446245 A CN104446245 A CN 104446245A
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Abstract
The invention discloses super early-strength mortar. The key point of the technical scheme is that the super early-strength mortar is prepared from the following components in percentage by weight: 40-50% of an inorganic bond material, 1-3% of an enhancer, 45-55% of aggregates, 0.3-1.5% of an early-strength agent, 0.05-0.4% of a retarder, 0.1-0.5% of a water reducer and 0.03-0.15% of anti-cracking fibers. The invention provides the super early-strength mortar which does not bleed or shrink and is high in liquidity; in addition, the 1h compressive strength can reach 30MPa and the long-term strength is not decreased.
Description
Technical field
The present invention be directed to the special sand pulp material of motorway and urban pavement repairing exploitation, time of coagulation is fast and intensity is high.Can be used for salvaging and the supper-fast anchoring of wall screw of airport, railway, highway, bridge etc., intercept water in the engineerings such as leak stopping.
Background technology
At present, rapidly, there is hollow in the express highway pavement much built up in early days and the road surface in city for China's motorway and Process of Urbanization Construction development.No matter be motorway or urban road, the bad meeting in road surface causes traffic safety and traffic accident, pavement patching is can hardly be avoided, strength mortar morning used in present pavement repair engineering, 2h maximum intensity is at about 20MPa, gain in strength is slow, can not meet the requirement of early strong, high-strength, large fluidity.
Summary of the invention
For the deficiency that prior art exists, the super high-early-strength mortar that the object of the present invention is to provide a kind of not bleeding, ungauged regions, large fluidity, 1h ultimate compression strength can reach 30MPa and later strength not decline.
For achieving the above object, the present invention adopts following technical scheme, is configured by weight percentage form by inorganic coagulation material 40-50%, toughener 1-3%, aggregate 45-55%, hardening accelerator 0.3-1.5%, retardant 0.05-0.4%, water reducer 0.1-0.5% and anti-crack fiber 0.03-0.15%.
Preferably, inorganic coagulation material is that aluminosulfate cement, silicate cement and plaster of Paris configure by weight percentage and form, described aluminosulfate cement mass percent is 25%-40%, described silicate cement is Portland cement, Portland cement mass percent is 5%-10%, and described plaster of Paris mass percent is 5%-15%.
Preferably, toughener is SILICA FUME.
Preferably, aggregate is one or more compounds in river sand, extra large sand or artificial sand, selects grain fineness number to be 10-140 order, is respectively the 10-30 object aggregate of 50%, the 30-60 object aggregate of 40%, the 70-140 object aggregate of 10%.
Preferably, hardening accelerator is calcium formiate.
Preferably, retardant is hydroxyl carboxylic material.
Preferably, hydroxyl carboxylic material is one or more compounds in tartrate, citric acid, Trisodium Citrate, boric acid.
Preferably, water reducer is divided into powdery naphthalene sulfonic salt high efficiency water reducing agent, one or more compounds in sulfamate high-effective water-reducing agent or polycarboxylic acid series high efficiency water reducing agent.
Preferably, anti-crack fiber is PP fiber, and staple length is at 2-6mm.
Hinge structure of the present invention is compared to be had: gain in strength is fast.After existing super high-early-strength mortar 2h, intensity is at about 20MPa.High-performance super high-early-strength mortar of the present invention 1h intensity while having certain operating time can reach 30MPa, and stable long-term strength.Fluidity of slurry is good, and slurry initial fluidity reaches 300mm, and constructing operation is convenient.Ungauged regions, not bleeding, self-compacting, use simple, without the need to vibrating.Of many uses.The present invention be directed to the special sand pulp material of motorway and urban pavement repairing exploitation, time of coagulation is fast and intensity is high.Can be used for salvaging and the supper-fast anchoring of wall screw of airport, railway, highway, bridge etc., intercept water in the engineerings such as leak stopping.
Embodiment
Further describe the present invention by embodiment, but described embodiment is only for illustration of the present invention
Not restriction the present invention.
Embodiment one: taking each raw material is respectively by weight: aluminosulfate cement 380kg, plaster of Paris 80kg, P0 52.5 ordinary Portland cement 50kg, SILICA FUME 16.2kg, aggregate 470kg (the 70-140 object aggregate of the 10-30 object aggregate of 235kg, the 30-60 object aggregate of 188kg, 47kg), tartrate 0.5kg, citric acid 0.5kg, calcium formiate 0.7kg, high-efficiency water-reducing agent of poly-carboxylic acid 1.6kg.Length is the PP fiber 0.5kg of 3mm.Above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 315mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 34.3MPa, 2h ultimate compression strength be 47MPa, 4h ultimate compression strength is 54.7MPa, 1d ultimate compression strength is 65.1MPa, 28d ultimate compression strength is 92.6MPa.Its gain in strength is fast.After existing super high-early-strength mortar 2h, intensity is at about 20MPa, and super high-early-strength mortar of the present invention 1h intensity while having certain operating time can reach 30MPa, and stable long-term strength, fluidity of slurry is good.
SILICA FUME can the intergranular hole of filling concrete, generates gelinite simultaneously, react generate gelinite with basic material magnesium oxide with hydrated product.In the concrete of cement based, mortar and refractory material casting material, mix appropriate silicon ash, following effect can be played: significantly improve resistance to compression, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property; Have water conservation, prevent segregation, bleeding, significantly reduce the effect of concrete pumping resistance; In the work-ing life of significant prolongation concrete, particularly under the severe environment such as villiaumite system erosion, sulphate attack, high humidity, the weather resistance of concrete can be made to double even several times; There is effect of about 5 times of cement, apply in ordinary concrete and Low Cement Castable and can reduce costs. improve weather resistance; Effectively prevent concrete alkali-aggregate reaction.
High-efficiency water-reducing agent of poly-carboxylic acid be integrate diminishing, protect collapse, strengthen, the serial water reducer with premium properties of anti-shrinkage and environmental protection etc., can solve high-strength, that high performance concrete viscosity is large, workability is bad weakness completely, be for preparing desirable admixture that is high-strength, high performance concrete.Multi-functional admixture can be formed, as pumping agent, hardening accelerator, antiseeping waterproofing agent, retardant etc. with various Additive is composite.Workability of concrete is good: though with high-efficiency water-reducing agent of poly-carboxylic acid preparation concrete in high slump situation, do not have obvious segregation, excreting water phenomenon, concrete appearance solid colour yet.Very favourable for preparation high-flowing concrete, self-leveling concrete, self-compacting concrete, shimizu finish concrete.During for preparing high-grade concrete, workability of concrete is good, cohesiveness is good, and concrete is easy to stir.The concrete mixing this product has good weather resistance, is all better than ordinary water-reducing agent in Packing character, stability, pumpability, intensity density, Sulfate corrosion resistance, anti-alkali aggregate reaction, frost resistance, resisted shrinkage and the aspect of performance such as to creep.With different varieties cement and adulterant consistency good, solve and adopt other class water reducer and gelling material compatibility problem.Product stability is good: without Precipitation during low temperature.Green Product, this product alkali content, chloride ion content, sodium sulphate content, formaldehyde content are all very low, and do not produce the pollution to physical environment in process of production, meet ISO14000 Environmental protection management national standard, are conducive to Sustainable development.Good in economic efficiency: engineering comprehensive cost is lower than other type products of use.
PP fiber is by polypropylene and multiple organic and inorganic material, refine through compounding technology and form, product can form the netted support effect of three-dimensional random distribution in concrete, concrete is stopped at the tiny crack that the sclerosis initial stage is formed in evolution, is difficult to further develop.Thus concrete fracture toughness property can be improved, improving concrete anti-crack and anti-seepage performance, is mortar, concrete works cracking resistance, and antiseepage is wear-resisting, the new type ideal material of insulation.
Embodiment two: taking each raw material is respectively by weight: aluminosulfate cement 300kg, plaster of Paris 50kg, P0 52.5 ordinary Portland cement 100kg, SILICA FUME 26kg, aggregate 520kg, tartrate 0.4kg, boric acid 0.2kg, calcium formiate 1.2kg, naphthalene sulfonic salt high efficiency water reducing agent 1.5 kg.Length is the PP fiber 0.7kg of 5mm, and above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 290mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 29.6MPa, 2h ultimate compression strength be 43.1MPa, 4h ultimate compression strength is 51.9MPa, 1d ultimate compression strength is 61.1MPa, 28d ultimate compression strength is 83.7MPa.Its gain in strength is fast, and stable long-term strength, fluidity of slurry is good.
Naphthalene sulfonic salt high efficiency water reducing agent is applicable to cast-in-place, prefabricated reinforced concrete, and outer fly ash mixes earth; Adapt to preparation early strong, high-strength, high impervious, self-compacting, pumping mixes earth and purling pulp material; Natural curing and steam-cured mixed earth engineering and goods can be widely used in; For silicate cement, ordinary Portland cement, Portland blast furnace slag cement, fly ash silicate and portland-pozzolan cement all have good adaptability; Can be used for the mixed earth admixture preparing various series.
Embodiment three: taking each raw material is respectively by weight: aluminosulfate cement 340kg, plaster of Paris 75kg, P0 52.5 ordinary Portland cement 60kg, SILICA FUME 20.4kg, aggregate 500kg, tartrate 0.8kg, calcium formiate 1kg, high-efficiency water-reducing agent of poly-carboxylic acid 1.8 kg.Length is the PP fiber 1kg of 3mm, and above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 330mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 32.3MPa, 2h ultimate compression strength be 46.4MPa, 4h ultimate compression strength is 52.7MPa, 1d ultimate compression strength is 62.8MPa, 28d ultimate compression strength is 89MPa.Its gain in strength is fast.After existing super high-early-strength mortar 2h, intensity is at about 20MPa, and super high-early-strength mortar of the present invention 1h intensity while having certain operating time can reach 30MPa, and stable long-term strength, fluidity of slurry is good.
Embodiment four: taking each raw material is respectively by weight: aluminosulfate cement 320kg, plaster of Paris 80kg, P0 52.5 ordinary Portland cement 65kg, SILICA FUME 22kg, river sand 300kg, sea sand 220kg, tartrate 0.3kg, citric acid 0.4kg, Trisodium Citrate 0.2kg, calcium formiate 1kg, high-efficiency water-reducing agent of poly-carboxylic acid 1 kg, naphthalene sulfonic salt high efficiency water reducing agent 0.7kg.Length is the PP fiber 0.9kg of 3mm, and above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 310mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 33.1MPa, 2h ultimate compression strength be 46.7MPa, 4h ultimate compression strength is 53.1MPa, 1d ultimate compression strength is 63.2MPa, 28d ultimate compression strength is 91.5MPa.Its gain in strength is fast.After existing super high-early-strength mortar 2h, intensity is at about 20MPa, and super high-early-strength mortar of the present invention 1h intensity while having certain operating time can reach 30MPa, and stable long-term strength, fluidity of slurry is good.
Embodiment five: taking each raw material is respectively by weight: aluminosulfate cement 350kg, plaster of Paris 60kg, P0 52.5 ordinary Portland cement 90kg, SILICA FUME 23kg, river sand 280kg, artificial sand 210kg, citric acid 0.6kg, boric acid 0.3kg, calcium formiate 0.9kg, naphthalene sulfonic salt high efficiency water reducing agent 0.7 kg, high-efficiency water-reducing agent of poly-carboxylic acid 0.9kg.Length is the PP fiber 0.8kg of 5mm, and above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 295mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 30.1MPa, 2h ultimate compression strength be 45.2MPa, 4h ultimate compression strength is 52.0MPa, 1d ultimate compression strength is 62.3MPa, 28d ultimate compression strength is 85.7MPa.Its gain in strength is fast, and stable long-term strength, fluidity of slurry is good.
Embodiment six: taking each raw material is respectively by weight: aluminosulfate cement 370kg, plaster of Paris 70kg, P0 52.5 ordinary Portland cement 60kg, SILICA FUME 18.2kg, extra large sand 200kg, artificial sand 180kg, tartrate 0.6kg, citric acid 0.4kg, calcium formiate 1.1kg, high-efficiency water-reducing agent of poly-carboxylic acid 1.1kg, sulfamate high-effective water-reducing agent 0.5kg.Length is the PP fiber 0.7kg of 3mm.Above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 320mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 33.4MPa, 2h ultimate compression strength be 46.1MPa, 4h ultimate compression strength is 53.9MPa, 1d ultimate compression strength is 63.8MPa, 28d ultimate compression strength is 91.7MPa.Its gain in strength is fast.After existing super high-early-strength mortar 2h, intensity is at about 20MPa, and super high-early-strength mortar of the present invention 1h intensity while having certain operating time can reach 30MPa, and stable long-term strength, fluidity of slurry is good.
Embodiment seven: taking each raw material is respectively by weight: aluminosulfate cement 290kg, plaster of Paris 40kg, P0 52.5 ordinary Portland cement 120kg, SILICA FUME 28kg, river sand 120kg, extra large sand 180kg, artificial sand 230kg, tartrate 0.2kg, citric acid 0.3kg, Trisodium Citrate 0.1kg, boric acid 0.1kg, calcium formiate 1.4kg, naphthalene sulfonic salt high efficiency water reducing agent 0.5 kg sulfamate high-effective water-reducing agent 0.4kg, high-efficiency water-reducing agent of poly-carboxylic acid 0.7kg.Length is the PP fiber 0.9kg of 5mm, and above raw material adds dry powder stirring mixer and stirs, and namely obtains product.With reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", recording super high-early-strength mortar initial flow degree is 285mm.Ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", to record super high-early-strength mortar 1h ultimate compression strength be 29.3MPa, 2h ultimate compression strength be 41.1MPa, 4h ultimate compression strength is 50.2MPa, 1d ultimate compression strength is 59.9MPa, 28d ultimate compression strength is 82.9MPa.Its gain in strength is fast, and stable long-term strength, fluidity of slurry is good.
Product mobility of the present invention is measured with reference to " GBT 2419-2005 Test method for fluidity of cement mortar ", and ultimate compression strength is measured with reference to " GBT 17671-1999 cement mortar strength test ", and its test result is as follows:
The above is only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to the above embodiments, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a super high-early-strength mortar, is characterized in that: configured by weight percentage by inorganic coagulation material 40%-50%, toughener 1%-3%, aggregate 45%-55%, hardening accelerator 0.3%-1.5%, retardant 0.05%-0.4%, water reducer 0.1%-0.5% and anti-crack fiber 0.03%-0.15% and form.
2. a kind of super high-early-strength mortar according to claim 1, it is characterized in that: described inorganic coagulation material is that aluminosulfate cement, silicate cement and plaster of Paris configure by weight percentage and form, described aluminosulfate cement mass percent is 25%-40%, described silicate cement is Portland cement, Portland cement mass percent is 5%-10%, and described plaster of Paris mass percent is 5%-15%.
3. super high-early-strength mortar according to claim 1, is characterized in that: described toughener is SILICA FUME.
4. super high-early-strength mortar according to claim 1, it is characterized in that: described aggregate is one or more compounds in river sand, extra large sand or artificial sand, select grain fineness number to be 10-140 order, be respectively the 10-30 object aggregate of 50%, the 30-60 object aggregate of 40%, the 70-140 object aggregate of 10%.
5. super high-early-strength mortar according to claim 1, is characterized in that: described hardening accelerator is calcium formiate.
6. super high-early-strength mortar according to claim 1, is characterized in that: described retardant is hydroxyl carboxylic material.
7. super high-early-strength mortar according to claim 6, is characterized in that: described hydroxyl carboxylic material is one or more compounds in tartrate, citric acid, Trisodium Citrate, boric acid.
8. super high-early-strength mortar according to claim 1, is characterized in that: described water reducer is divided into powdery naphthalene sulfonic salt high efficiency water reducing agent, one or more compounds in sulfamate high-effective water-reducing agent or high-efficiency water-reducing agent of poly-carboxylic acid.
9. super high-early-strength mortar according to claim 1, is characterized in that: described anti-crack fiber is PP fiber, and staple length is at 2-6mm.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105198345A (en) * | 2015-09-07 | 2015-12-30 | 安徽鑫润新型材料有限公司 | High-abrasion-resistance insulation mortar |
| CN105271998A (en) * | 2015-10-13 | 2016-01-27 | 安徽芜湖飞琪水泥制品有限公司 | Material composition of self-insulation cement pile, and preparation method of self-insulation cement pile |
| WO2017092837A1 (en) * | 2015-11-30 | 2017-06-08 | Knauf Gips Kg | Additive for gypsum building materials |
| CN107572854A (en) * | 2017-08-31 | 2018-01-12 | 湖北工业大学 | A kind of prefabricated components cement-based gelling material Xu puts type reinforcing agent |
| CN107973577A (en) * | 2017-11-27 | 2018-05-01 | 南通大学 | Guardrail base preparation method |
| CN109137690A (en) * | 2018-09-07 | 2019-01-04 | 南京兴佑交通科技有限公司 | A kind of edge bonding method pouring into formula composite pavement grouting construction |
| CN109354471A (en) * | 2018-11-21 | 2019-02-19 | 君旺节能科技股份有限公司 | A kind of lower shrinkage self-compaction super hardening mending mortar and its construction technology |
| CN109608120A (en) * | 2018-11-26 | 2019-04-12 | 安徽特耐尔节能科技有限公司 | A kind of strong concrete material that can quickly solidify |
| CN111285652A (en) * | 2020-03-14 | 2020-06-16 | 新疆西部丝路交通产业创新联盟科技有限公司 | High-performance concrete |
| CN112851281A (en) * | 2021-01-27 | 2021-05-28 | 佛山优尼凯新材料有限公司 | Method for preparing polymer quick-drying early-strength anti-corrosion mortar |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105198345A (en) * | 2015-09-07 | 2015-12-30 | 安徽鑫润新型材料有限公司 | High-abrasion-resistance insulation mortar |
| CN105271998A (en) * | 2015-10-13 | 2016-01-27 | 安徽芜湖飞琪水泥制品有限公司 | Material composition of self-insulation cement pile, and preparation method of self-insulation cement pile |
| CN105271998B (en) * | 2015-10-13 | 2018-04-17 | 安徽芜湖飞琪水泥制品有限公司 | The preparation method of self-heat conserving concrete stake material compositions and self-heat conserving concrete stake |
| IL259551A (en) * | 2015-11-30 | 2018-07-31 | Knauf Gips Kg | Additive for gypsum building materials |
| WO2017092837A1 (en) * | 2015-11-30 | 2017-06-08 | Knauf Gips Kg | Additive for gypsum building materials |
| EA034809B1 (en) * | 2015-11-30 | 2020-03-24 | Кнауф Гипс Кг | Additive for gypsum building materials |
| CN107572854A (en) * | 2017-08-31 | 2018-01-12 | 湖北工业大学 | A kind of prefabricated components cement-based gelling material Xu puts type reinforcing agent |
| CN107973577A (en) * | 2017-11-27 | 2018-05-01 | 南通大学 | Guardrail base preparation method |
| CN109137690A (en) * | 2018-09-07 | 2019-01-04 | 南京兴佑交通科技有限公司 | A kind of edge bonding method pouring into formula composite pavement grouting construction |
| CN109354471A (en) * | 2018-11-21 | 2019-02-19 | 君旺节能科技股份有限公司 | A kind of lower shrinkage self-compaction super hardening mending mortar and its construction technology |
| CN109608120A (en) * | 2018-11-26 | 2019-04-12 | 安徽特耐尔节能科技有限公司 | A kind of strong concrete material that can quickly solidify |
| CN111285652A (en) * | 2020-03-14 | 2020-06-16 | 新疆西部丝路交通产业创新联盟科技有限公司 | High-performance concrete |
| CN112851281A (en) * | 2021-01-27 | 2021-05-28 | 佛山优尼凯新材料有限公司 | Method for preparing polymer quick-drying early-strength anti-corrosion mortar |
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Application publication date: 20150325 |