CN101723640B - Road engineering base course and soil road base polymer grouting material - Google Patents
Road engineering base course and soil road base polymer grouting material Download PDFInfo
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- CN101723640B CN101723640B CN2009102010469A CN200910201046A CN101723640B CN 101723640 B CN101723640 B CN 101723640B CN 2009102010469 A CN2009102010469 A CN 2009102010469A CN 200910201046 A CN200910201046 A CN 200910201046A CN 101723640 B CN101723640 B CN 101723640B
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Abstract
The invention provides a road engineering base course and soil road base polymer grouting material. The material is characterized by comprising the following components in parts by weight: 100 parts of metallurgical slag, 30 parts of high-lime fly ash, 10 parts of metakaolin, 1-3 parts of thickening water-retaining agent, 30 parts of alkaline exciting agent and 2-4 parts of additive. The material has the advantages of quick setting, early strength, large fluidity and good permeability.
Description
Technical field
The present invention relates to a kind of road engineering basic unit and earth roadbed polymer grouting material, be used to reinforce engineering soft clay grounds such as road foundation, roadbase, bridge joint slope, belong to the roadbed and the basic unit reinforcement technique field of road.
Background technology
In the last few years; Shanghai City annual cost substantial contribution is used to build urban road Infrastructure; Greatly improved people's traffic trip demand, but because construction, maintenance, design and growing various reasons such as traffic flow, the part road surface has produced a large amount of breakages of different nature.Yet the material and the technology that are used to repair this breakage still very lack.Traditional carrying out turns in a large number and digs, metathetical maintenance construction method is blocked traffic, contaminate environment, can not adapt to the fast-developing requirement in current city far away.Therefore, injecting paste material as a kind of alternative patching material extremely the construction technology Study on Technology just seem very necessary.
Solidifying agent injecting paste material reinforcement technique has improved the deficiency of old technology greatly, not only practices thrift cost, the reduction of erection time, and increase substantially construction quality.Adopt the solidifying agent injecting paste material that road is carried out accessible traffic and repair the technical progress that helps the industrial residue comprehensive utilization fast, both can save energy and practiced thrift cement and protection environment; Can not block traffic above-ground again and carry out the emergency first-aid repair construction, reduce the excavation workload of Road maintenance engineering.Simultaneously; Because this construction technology generally need adopt comparatively light-duty easy mechanical means; So operating efficiency is high, speed of application is fast, labour intensity is low, construction quality is good, have far-reaching Technological Economy and social environment benefit with novel material and utilisation technology to solving China's reinforced soft soil ground.
The solidifying agent injecting paste material is put forward in its USP in 1985 by French scientist Joseph Davidovits the earliest, is widely used now, and has got into the practicability stage.At present; Many mechanism such as France of specializing in are arranged in the world; " the Waterways Experiment Station " of " Geopolymer Institute " and the U.S. etc. and many scientists are serving the research work of solidifying agent injecting paste material, about the theory and the growth fast of applied research achievement of solidifying agent injecting paste material science.
China studies later in this respect, and the eighties has the people to begin to change with compound additive the use characteristics of the ultra pulp-water of injection early mud, and the application of trial property has been arranged.Public works Research Institute in the nineties Shanghai goes out a kind of quick injecting paste material and in actual engineering, has obtained certain pilot application.People such as Zhang Yunsheng mix three kinds of steel fibers in the solidifying agent matrix, adopt suitable maintaining process to obtain the fiber reinforcement solidifying agent activity powder concrete of a series of intensity, and its ultimate compression strength is up to 55.2Mpa, and flexural strength reaches 22.44Mpa.
The solidifying agent injecting paste material receives people's attention day by day as the accessible traffic material for quickly repairing of a kind of new environment-friendly type at present, and domestic investigator has done certain research work to the solidifying agent injecting paste material.But still being in the starting stages such as research, exploitation, the technology of aspects such as relevant solidifying agent injecting paste material and technology thereof is ripe not enough, reach widespread use and also need do a large amount of work.
Summary of the invention
The purpose of this invention is to provide that a kind of quick setting early strength, degree of mobilization are big, the road engineering basic unit and the earth roadbed polymer grouting material of good penetrability.
In order to achieve the above object; Technical scheme of the present invention provides a kind of road engineering basic unit and earth roadbed polymer grouting material; It is characterized in that, form by metallurgical slag 100 weight parts, high-calcium fly ass 30 weight parts, metakaolin 10 weight parts, thickening water-holding agent 1～3 weight part, alkali-activator 30 weight parts and admixture 2～4 weight parts.
The scoriaceous particle diameter of said metallurgy is less than 5.0mm.
Said high-calcium fly ass is an II level high-calcium fly ass.
Described thickening water-holding agent is a SY-1 thickening water-holding agent.
Described alkali-activator is the ND-105 alkali-activator.
Described admixture is the WY-II efficient additive.
Principle of the present invention is: 1, because slag is that a kind of portland cement clinker overbumt has certain gelation activity; Swelling property and higher granule strength; Can become a kind of new component of densification injection material, be used for regulating, improving the material properties such as time of coagulation, intensity and degree of sinking to of injection material; 2, owing to adopt fine solid particle or small-particulate materials and exciting agent to be composited; Have that viscosity is little, degree of mobilization good, the diffusion radius is big; Durable good stability, bleeding and shrinking percentage are significantly less than grout class injecting paste material simultaneously, and the roadbed basis is had higher perviousness and fixed performance.
Advantage of the present invention is to have comparatively ideal engineering physics performance; Viscosity is little, self intensity high, 4 hours ultimate compression strength reaches 3.5MPa; Degree of mobilization is big, the property annotated is good, quick setting early strength, degree of mobilization are big, good penetrability, durable good stability, bleeding and shrinking percentage are significantly less than grout class injecting paste material, and the roadbed basis is had higher perviousness and fixed performance; The injecting paste material of its suitable free-moving traffic repairing road engineering, slip casting performance and technical requirements, and the research of the mixing proportion design method of mechanize mortar depositing construction, injecting paste material is used for entity project, but 3 hours open to traffic.
Description of drawings
Fig. 1 is a slump test funnel synoptic diagram;
Fig. 2 is that bleeding rate and rate of expansion detect the testing apparatus synoptic diagram.
Embodiment
Specify the present invention below in conjunction with embodiment.
Embodiment 1
A kind of road engineering basic unit and earth roadbed polymer grouting material are made up of metallurgical slag 100 weight parts, high-calcium fly ass 30 weight parts, metakaolin 10 weight parts, thickening water-holding agent 1～3 weight part, alkali-activator 30 weight parts and admixture 4 weight parts.
A kind of road engineering basic unit and earth roadbed polymer grouting material are made up of metallurgical slag 100 weight parts, high-calcium fly ass 30 weight parts, metakaolin 10 weight parts, thickening water-holding agent 1～3 weight part, alkali-activator 30 weight parts and admixture 4 weight parts.
A kind of road engineering basic unit and earth roadbed polymer grouting material are made up of metallurgical slag 100 weight parts, high-calcium fly ass 30 weight parts, metakaolin 10 weight parts, thickening water-holding agent 1～3 weight part, alkali-activator 30 weight parts and admixture 3 weight parts.
Embodiment 4
A kind of road engineering basic unit and earth roadbed polymer grouting material are made up of metallurgical slag 100 weight parts, high-calcium fly ass 30 weight parts, metakaolin 10 weight parts, thickening water-holding agent 1～3 weight part, alkali-activator 30 weight parts and admixture 5 weight parts.
Wherein, the various starting material that use in following examples are following:
(1) high-calcium fly ass: chemical ingredients and quality parameter that the II level high calcium ash that Hai Li industrial and trading company in Shanghai produces, itself and II level hang down calcium ash (production of willow Pu, Shanghai power plant) contrast like following table:
(2) metallurgical slag: Baosteel Branch's production, maximum powder ∠ 5.0mm, chemical ingredients such as following table:
| Composition | SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO | SO 3 | M.Fe | f-CaO |
| Contain gold/% | 8 | 1.5 | 11.8 | 43.8 | 9 | 0.11 | 0.7 | 11.3 |
Consider the processing requirement of volume stability and densification grouting, to the combination of Water Quenching Slag rescreening, the grating and the fineness modulus of used Water Quenching Slag see the following form:
(3) metakaolin: Zhejiang is carried forward powder company and is produced.
(4) thickening water-holding agent: the SY-1 thickening water-holding agent that Sichuan Rui Pushi building material ltd produces.
(5) alkali-activator: Shanghai jumps and reaches the ND-105 alkali-activator that Industrial Co., Ltd. produces.
(6) admixture: the WY-II efficient additive that Shanghai ten thousand spaces building admixture factory produces.
The performance requriements of above-mentioned raw materials such as following table:
The appearance requirement of above-mentioned raw materials such as following table:
The preparation method of said road engineering basic unit and earth roadbed polymer grouting material is following:
Road engineering basic unit of the present invention and earth roadbed polymer grouting material adopt above-mentioned raw materials to mix and obtain.Said road engineering basic unit and earth roadbed polymer grouting material are a kind of novel inorganic polymers, and its molecular chain Si, O, Al etc. are formed by connecting with covalent linkage, are to have zeolite structured class zeolite.Present method adopts the processing condition of synthetic roadbed solidifying agent such as metakaolin, alkali activator, obtains the optimum performance of solidifying agent through the add-on of adjusting composition of raw materials, water, works as SiO
2, Al
2O
3, 5Na
2During the molecular formula certain proportion of O, can obtain the solidifying agent of ultimate compression strength greater than 40Mpa, thus stable road bed working order.
The technical performance index of said road engineering basic unit and earth roadbed polymer grouting material detects as follows:
(1) compressive strength test:
Undertaken by the JTGE30 regulation, adopt 70.7 * 70.7 * 70.7mm
3Solidifying agent compound 1d, 7d, the 28d cubic compressive strength in the length of time is measured in die trial moulding test block.
(2) material slump test:
As shown in Figure 1, be slump test funnel synoptic diagram, funnel 3 bores are 178mm, the distance that some gauge 1 stretches into funnel 3 is 76mm, funnel 3 tapered section degree of depth 192mm, the degree of depth of end mouth valve 4 is 38mm;
Undertaken by the JTJ041 regulation during mensuration, earlier funnel is adjusted level, close upper base mouth valve 4; In the solidifying agent slurries impouring funnel 3 that stirs; Touch 1 time transverse plane 2 of a gauge until the surface, open valve 4, let the solidifying agent slurry freely flow out; The solidifying agent slurry has all flowed the time (s), is called the degree of mobilization of solidifying agent slurry.
(3) solidifying agent material slurries bleeding rate:
As shown in Figure 2, be bleeding rate and rate of expansion detection testing apparatus synoptic diagram, said device is processed with synthetic glass, with closure, high 120mm places on the level.
Undertaken by JTT041 regulation during mensuration, the about 100mm of solidifying agent slurry that fills in the container is dark, and the measurement solidifying agent is starched the height a of face 1
1And note, cover completely then.The height a of its segregation water surface 2 of measurement amount behind storing 3h and the 24h
2Height a with solidifying agent slurry expanding noodles 3
3, and calculate bleeding rate and rate of expansion respectively by following formula;
(4) solidifying agent water tolerance test:
Solidifying agent compound system $ is become the sample of (4 * 4 * 16) cm, put into its intensity of standard curing room 28d mensuration to a part wherein.Another part is placed on after curing cycle at 28d and soaks 30d in the water, measures the quality intensity of test specimen, thereby calculates its mass loss rate and loss of strength rate, and the water tolerance index is by computes:
L=water tolerance % in the formula; P
1-30d MPa; P
0-maintenance intensity MPa.
(5) mensuration of solidifying agent time of coagulation:
Test apparatus adopts Vicat apparatus, and the clean slurry of the solidifying agent of processing is packed in the round mould immediately, and vibration back is for several times wipeed off, puts into maintaining box; Before the mensuration, will justify mould and be placed on the sheet glass, and adjust instrument, when making test point contact glass, pointer indicated scale on 0 ~ 70 is a zero point of scale; During mensuration, take out the circle mould from maintaining box and be put under the test point, test point is contacted with clean slurry face, tighten the screws loosens suddenly then, and test point freely sinks to clean slurry, observes total indicator reading.
Initial mensuration should be helped metal bar gently, and it is descended slowly, in case that test point hits is curved. but still will recording the result with free-falling, is as the criterion the time of initial set. when closing on initial set, whenever measure once at a distance from 5min.Each mensuration must not let test point fall in the former pin hole. and at each test process, the circle mould should not shaken.
From adding water, to test point sink in the clean slurry apart from the required time of base plate 0.5～1.0mm be the presetting period, sink to test point that required time is a final setting time when being no more than 1mm in the clean slurry.
The technical performance index of said road engineering basic unit and earth roadbed polymer grouting material such as following table:
The method of use of said road engineering basic unit and earth roadbed polymer grouting material is following: the solidifying agent injecting paste material is added entry according to weight ratio at 1: 0.5, cloth hole → boring → clear hole → bury slurry pipe → slip casting → emit slurry hole shutoff → (or mend and starch) → tube drawing → grouting hole shutoff → maintenance → soil matrix slip casting (step is the same) → 1 day maintenance open to traffic.
The WP control of grouting pump is not more than 0.3Mpa (soil matrix slip casting is not more than 1.0Mpa).When pressure reaches 0.3Mpa (or 1.0Mpa), stop grouted static pressure 3～5min.If pressure descends and then continues slip casting, till the pulp of adjacent hole.
Main mechanical: air, oil electric engine, punch, hydraulic pressure grouting equipment, agitation vat, bury (pulling out) pipe support equipment, submersible pump.
Claims (6)
1. road engineering basic unit and earth roadbed polymer grouting material; It is characterized in that, form by metallurgical slag 100 weight parts, high-calcium fly ass 30 weight parts, metakaolin 10 weight parts, thickening water-holding agent 1～3 weight part, alkali-activator 30 weight parts and admixture 2～4 weight parts.
2. road engineering basic unit as claimed in claim 1 and earth roadbed polymer grouting material is characterized in that, the scoriaceous particle diameter of said metallurgy is less than 5.0mm.
3. road engineering basic unit as claimed in claim 1 and earth roadbed polymer grouting material is characterized in that, said high-calcium fly ass is an II level high-calcium fly ass.
4. road engineering basic unit as claimed in claim 1 and earth roadbed polymer grouting material is characterized in that, described thickening water-holding agent is a SY-1 thickening water-holding agent.
5. road engineering basic unit as claimed in claim 1 and earth roadbed polymer grouting material is characterized in that, described alkali-activator is the ND-105 alkali-activator.
6. road engineering basic unit as claimed in claim 1 and earth roadbed polymer grouting material is characterized in that, described admixture is the WY-II efficient additive.
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| CN105110717B (en) * | 2015-07-20 | 2017-11-17 | 上海宝田新型建材有限公司 | A kind of foundation stabilization material and its preparation method and application |
| CN105130290B (en) * | 2015-07-20 | 2017-07-25 | 上海宝田新型建材有限公司 | A kind of preparation method of foundation stabilization material |
| CN106278023A (en) * | 2016-08-09 | 2017-01-04 | 甘肃省公路管理局 | A kind of collapsible loess subgrade reinforcement material and preparation method and application |
| CN106220101A (en) * | 2016-08-12 | 2016-12-14 | 卓达新材料科技集团威海股份有限公司 | A kind of flyash base polymers grouting material and preparation method thereof |
| CN115012289A (en) * | 2022-05-09 | 2022-09-06 | 新疆北新路桥集团股份有限公司 | Minimally invasive treatment method for road deep disease |
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| CN101456708A (en) * | 2009-01-06 | 2009-06-17 | 中建商品混凝土有限公司 | High-strength and high performance lightweight aggregate and preparation method thereof |
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| CN101456708A (en) * | 2009-01-06 | 2009-06-17 | 中建商品混凝土有限公司 | High-strength and high performance lightweight aggregate and preparation method thereof |
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