CN1114574C - Ultra early-strength grouting material - Google Patents
Ultra early-strength grouting material Download PDFInfo
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- CN1114574C CN1114574C CN00116214.4A CN00116214A CN1114574C CN 1114574 C CN1114574 C CN 1114574C CN 00116214 A CN00116214 A CN 00116214A CN 1114574 C CN1114574 C CN 1114574C
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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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- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
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- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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- 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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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Abstract
本发明是一种超早强灌浆料。其原料组成配比按重量计为硅酸盐水泥30～40%、骨料黄砂50～60%、早强剂SH外掺剂8～15%、加速水化剂Na2CO30.7～0.9%、缓凝剂柠檬酸0.08～0.3%和高效减水剂0.8～1.53%。本超早强灌浆料浇灌养护12小时，抗压强度即可达20MPa。本超早强灌浆料适用于机场停机坪、跑道、设备基础、道路等时间限制的场合抢修，用途广泛。The invention is a super early strength grouting material. The proportion of raw materials is Portland cement 30-40% by weight, aggregate yellow sand 50-60%, early-strength agent SH external admixture 8-15%, accelerating hydration agent Na 2 CO 3 0.7-0.9% , retarder citric acid 0.08-0.3% and superplasticizer 0.8-1.53%. The super early strength grouting material can be watered and cured for 12 hours, and the compressive strength can reach 20MPa. This super early-strength grouting material is suitable for emergency repairs in time-limited occasions such as airport aprons, runways, equipment foundations, roads, etc., and has a wide range of uses.
Description
本发明涉及一种基础工程用的灌浆料，特别是一种抢修工业设备基础用的超早强灌浆料。The invention relates to a grouting material for foundation engineering, in particular to a super-early-strength grouting material for emergency repair of industrial equipment foundations.
目前中国现有的早强灌浆料，经浇灌养护以最短时间可投入使用的，最短时间为24小时。终凝时间一般约为4～5小时左右，因此在4小时以内抗压强度均为零，到24小时以后其抗压强度一般为20MPa，而且在24小时以内都不得受力使用。如中国生产的By-40灌浆料就属于此类材料，其配合比为：水泥42.1％，黄砂56.8％，减水剂0.63％，铝粉0.017％，硅粉0.42％。日本特开平8-290951公开一种类拟的灌浆料，养护2小时其抗压强度只有5MPa，而且其只能作为铺设PC板、RC板等砼板时所使用的内填灰浆材料，不能作为直接受力面材料，该材料可以获得初期强度1MPa以上(2小时)，28天龄期抗压强度在10MPa以内，其配合比为：水泥20～40％，钙铝酸盐6～18％，石膏4～12％，铝渣24～70％，分离降低剂0.01～0.1％，凝固调整剂0.1～5.0％。At present, the existing early-strength grouting materials in China can be put into use in the shortest time after watering and maintenance, and the shortest time is 24 hours. The final setting time is generally about 4 to 5 hours, so the compressive strength is zero within 4 hours, and its compressive strength is generally 20MPa after 24 hours, and it must not be used under force within 24 hours. For example, the By-40 grout produced in China belongs to this type of material, and its mix ratio is: cement 42.1%, yellow sand 56.8%, water reducing agent 0.63%, aluminum powder 0.017%, silicon powder 0.42%. Japanese Patent Laying-Open No. 8-290951 discloses a similar grouting material. Its compressive strength is only 5MPa after curing for 2 hours, and it can only be used as an internal filling mortar material for laying PC boards, RC boards and other concrete boards, and cannot be used as a direct grouting material. Stress surface material, the material can obtain the initial strength of 1MPa or more (2 hours), the 28-day age compressive strength is within 10MPa, and its mixing ratio is: cement 20-40%, calcium aluminate 6-18%, gypsum 4-12%, aluminum slag 24-70%, separation reducing agent 0.01-0.1%, solidification regulator 0.1-5.0%.
冶金、化工和重型机械等工业的设备基础，由于长期负荷、受振动、环境温、湿度变化、煤气等腐蚀介质的侵蚀等原因的影响，造成设备基础混凝土破损、地脚螺栓松动、锈蚀、断裂等影响生产，从而急需更换或抢修，使生产尽快恢复，同时由于设备检修时常发生，如果灌浆料的强度过高，对今后设备基础的解体造成极大困难，因此要求灌浆料不但早期强度高，而且后期强度不能过高。现代化大企业的作业特点是连续性，一般无法停下来进行检修，如发生突发事故，要靠抢修来完成。因此要求抢修、检修的时间越短越好，目前现场往往由于施工材料本身的特点，施工完后要进行很长时间的养护，即使抢修的时间较短，但仍要等一天甚至几天才能投入使用，严重影响生产。现有早强的灌浆料不能完全满足检修需要，它们一般要求24小时内不得受振动碰撞，终凝后浇水湿润养护至少需要1天之后才能投入使用。而大型冶金企业有此设备的检修需要在最短的时间内完成，以减少非计划停机时间，取得效益最大化，而目前现有的早强灌浆料无法满足这一要求，在设备检修中常常会因灌浆料要经很长时间的养护才可投入使用而造成非计划停机时间的增加，从而降低了企业的收益。The equipment foundation of metallurgy, chemical industry and heavy machinery industry, due to the influence of long-term load, vibration, environmental temperature, humidity change, corrosion of gas and other corrosive media, etc., will cause damage to the concrete of the equipment foundation, loose anchor bolts, rust and fracture If the strength of the grouting material is too high, it will cause great difficulties for the disintegration of the equipment foundation in the future. Therefore, the grouting material is required not only to have high early strength, but also to And the late strength should not be too high. The operation of modern large enterprises is characterized by continuity, and it is generally impossible to stop for maintenance. If an accident occurs, it must be completed by emergency repairs. Therefore, the shorter the repair and maintenance time is, the better. At present, due to the characteristics of the construction materials, the site often needs to be maintained for a long time after construction. Even if the repair time is short, it still takes a day or even a few days to put it into operation. use, seriously affecting production. The existing early-strength grouting materials cannot fully meet the maintenance needs. They are generally required not to be subjected to vibration and collision within 24 hours. After final setting, they need to be watered and maintained for at least one day before they can be put into use. However, the overhaul of this equipment in large metallurgical enterprises needs to be completed in the shortest time to reduce unplanned downtime and maximize benefits. However, the existing early-strength grouting materials cannot meet this requirement, and often occur during equipment overhaul. Unplanned downtime is increased due to the long period of maintenance of the grout before it can be put into use, thereby reducing the profit of the enterprise.
本发明的目的在于提供一种超早强灌浆料，能进一步缩短浇灌保养时间，达到所需抗压强度，从而能更快投入使用，以适用于有紧急时间限制场所部位的抢修。The purpose of the present invention is to provide a super-early-strength grouting material, which can further shorten the watering and maintenance time and achieve the required compressive strength, so that it can be put into use faster and is suitable for emergency repairs in places with limited emergency time.
为达到上述目的，本发明采用下述的技术方案：To achieve the above object, the present invention adopts following technical scheme:
本发明为一种超早强灌浆料，其特征在于原料组成为水泥、骨料、早强剂、加速水化剂、缓凝剂和减水剂，其配比按重量计为：水泥∶硅酸盐水泥30～60％、骨料∶黄砂50～60％、早强剂∶SH外掺剂8～15％、加速水化剂∶Na2CO3 0.7～0.9％、缓凝剂∶柠檬酸0.08～0.3％，减水剂∶高效减水剂0.8～1.53％。本超早强灌浆料在施工现场加水量为超早强灌浆料的15～18％，浇灌养护12小时以内，抗压强度可达20MPa。The invention is a super early strength grouting material, which is characterized in that the raw materials are composed of cement, aggregate, early strength agent, accelerated hydration agent, retarder and water reducer, and the proportion is by weight: cement: silicon Salt cement 30-60%, aggregate: yellow sand 50-60%, early strength agent: SH external admixture 8-15%, accelerated hydration agent: Na 2 CO 3 0.7-0.9%, retarder: citric acid 0.08～0.3%, superplasticizer: superplasticizer 0.8～1.53%. The amount of water added to the super-early-strength grouting material at the construction site is 15-18% of the super-early-strength grouting material, and the compressive strength can reach 20MPa within 12 hours of watering and curing.
上述水泥宜采用硅酸盐水泥，骨料宜采用黄砂，早强剂宜采用上海水泥厂生产的SH外掺剂(硅酸盐水泥超早强外掺剂)，加速水化剂宜采用Na2CO3，减水剂宜采用高效减水剂。Portland cement should be used for the above cement, yellow sand should be used as aggregate, SH external admixture (portland cement super early strength external admixture) produced by Shanghai Cement Factory should be used as early strength agent, and Na2 For CO 3 , superplasticizers should be high-efficiency superplasticizers.
上述的黄砂宜采用粒径为0.35～5mm而细度模数Mx为2.3～3.7的中粗黄砂。The above-mentioned yellow sand should be medium-coarse yellow sand with a particle size of 0.35-5 mm and a fineness modulus Mx of 2.3-3.7.
按上述超早强灌浆料的原料组成，其配比按重量计调整为：硅酸盐水泥30～35.8％，中粗黄砂50～53.7％，SH外掺剂8.95～13％，Na2CO3，0.72～0.9％，柠檬酸0.09～0.3％，高效减水剂0.8～1.53％。本超早强灌浆料浇灌养护12小时以内，抗压强度可达25MPa。According to the raw material composition of the above-mentioned super early strength grouting material, the ratio is adjusted by weight: Portland cement 30-35.8%, medium-coarse yellow sand 50-53.7%, SH external admixture 8.95-13%, Na 2 CO 3 , 0.72-0.9%, citric acid 0.09-0.3%, superplasticizer 0.8-1.53%. The super early strength grouting material can be watered and cured within 12 hours, and the compressive strength can reach 25MPa.
按上述超早强灌浆料的原料组成，其配比按重量调整为：硅酸盐水泥30～34.8％，中粗黄砂50～51.5％，SH外掺剂12～13％，Na2CO3 0.78～0.9％，柠檬酸0.2～0.26％，高效减水剂1.0～1.53％。本超早强灌浆料浇灌养护6小时以内，抗压强度可达20MPa。According to the raw material composition of the above-mentioned super early strength grouting material, the proportion is adjusted by weight: Portland cement 30-34.8%, medium-coarse yellow sand 50-51.5%, SH external admixture 12-13%, Na 2 CO 3 0.78 ~0.9%, citric acid 0.2~0.26%, superplasticizer 1.0~1.53%. The super early strength grouting material can be watered and cured within 6 hours, and the compressive strength can reach 20MPa.
按上述超早强灌浆料的原料组成，其配比按重量计调整为：硅酸盐水泥30～33.86％，中粗黄砂50～50.8％，SH外掺剂0.85～0.9％，Na2CO30.25～0.26％，柠檬酸1.0～1.53％。本超早强灌浆料浇灌养护2小时以内，抗压强度即可达20MPa。According to the raw material composition of the above-mentioned super early strength grouting material, the proportion is adjusted by weight: Portland cement 30-33.86%, medium-coarse yellow sand 50-50.8%, SH external admixture 0.85-0.9%, Na 2 CO 3 0.25-0.26%, citric acid 1.0-1.53%. The ultra-early-strength grouting material can be poured and cured within 2 hours, and the compressive strength can reach 20MPa.
上述的缓凝剂宜采用羟基羧酸物质，如柠檬酸(3-羟基-3羧基戊二酸)等。The above-mentioned retarder is preferably a hydroxycarboxylic acid substance, such as citric acid (3-hydroxy-3-carboxyglutaric acid) and the like.
上述的高效减水剂宜采用β-萘磺酸盐甲醛合物，如市售的SN-II高效减水剂。The above-mentioned high-efficiency water reducer is preferably β-naphthalenesulfonate formaldehyde, such as the commercially available SN-II high-efficiency water reducer.
本发明提供的超早强灌浆料所选用的原料组成及其配比，基于如下原料组成作用机理、产品性能和成本因素：The raw material composition and proportioning ratio selected for the super early strength grouting material provided by the present invention are based on the following raw material composition action mechanism, product performance and cost factors:
1.如水泥配合量不足30％，则不能获取足够的强度，但若超过40％，则灌浆料的后期强度太高，对今后基础检修时灌浆层的解体带来困难，又由于硅酸盐水泥与其它水泥相比最容易得到，故选用硅酸盐水泥作为胶结料。1. If the cement content is less than 30%, sufficient strength cannot be obtained, but if it exceeds 40%, the later strength of the grouting material will be too high, which will bring difficulties to the disintegration of the grouting layer during foundation maintenance in the future. Compared with other cements, cement is the easiest to obtain, so Portland cement is selected as the cementing material.
2.由于黄砂很容易获得，而且价格低廉，因此我们选用黄砂(中粗黄砂)作为骨料成份。2. Because yellow sand is easy to obtain and the price is low, we choose yellow sand (medium-coarse yellow sand) as the aggregate component.
3.要配制短时间内达到20MPa以上的灌浆料，势必要通过掺入特殊的早强剂来实现，最后我们选择了SH外掺剂(硅酸盐水泥超早强外掺剂)，该外掺剂以CaO·Al2O3为主要成份的水泥熟料，加入适量硬石膏和促硬剂，经磨细制成的，凝结时间可调节、小时强度增长迅速，它掺入量的多少直接决定了灌浆料的凝结时间和早期抗压强度，若不足8％，则得不到我们所期望的早期强度，但若超过15％，则因成本增大而不经济。3. To prepare grouting materials that can reach 20MPa or more in a short period of time, it must be achieved by adding a special early-strength agent. Finally, we chose SH external admixture (portland cement super early-strength external admixture). The admixture is cement clinker with CaO·Al 2 O 3 as the main component, and it is made by adding appropriate amount of anhydrite and hardening accelerator, and it is made by grinding. The setting time can be adjusted, and the hourly strength increases rapidly. It determines the setting time and early compressive strength of the grout. If it is less than 8%, the expected early strength will not be obtained, but if it exceeds 15%, it will be uneconomical due to increased costs.
4.由于SH外掺剂的初凝时间太短，不便于施工，因此势必要加入缓凝剂来控制，若加入量不足0.08％则缓凝效果不明显，但若超过0.3％则引起硬化减缓，从而影响早期强度。缓凝剂可选用各类羟基羧酸物质，如柠檬酸(3-羟基-3羧基戊二酸)等。4. Since the initial setting time of the SH external admixture is too short, it is not convenient for construction, so it is necessary to add a retarder to control it. If the amount added is less than 0.08%, the retarding effect will not be obvious, but if it exceeds 0.3%, the hardening will be slowed down , thus affecting the early strength. The retarder can be selected from various hydroxycarboxylic acid substances, such as citric acid (3-hydroxy-3-carboxyglutaric acid) and the like.
5.由于选用的早强剂为市售的上海水泥厂生产的SH外掺剂，该料的粘稠性很大，流动性差，但我们要配制大流动度的灌浆料，势必通过外掺减水剂来达到流动度要求，加进减水剂后，由于水泥粒子吸附了减水剂分子或离子，在水泥粒子周围形成了固定双电层及扩散双电层，使粒子间相互排斥，固定层和扩散层之间又可相对运动，从而使水泥粒子保持较好分散状态，从而达到可以降低用水量，增加流动性。选用的高效减水剂为β-萘磺酸盐甲醛缩合物(如SN-II高效减水剂等)，若不足0.8％，则效果不明显，若超过1.53％，则会影响灌浆料的膨胀性。5. Since the selected early strength agent is the commercially available SH external admixture produced by Shanghai Cement Plant, the material has a high viscosity and poor fluidity. However, if we want to prepare a grouting material with a large fluidity, it is necessary to reduce it by external admixture. Water agent is used to meet the fluidity requirements. After adding water reducing agent, because the cement particles absorb the water reducing agent molecules or ions, a fixed double layer and a diffusion double layer are formed around the cement particles, so that the particles repel each other and fix The relative movement between the diffusion layer and the diffusion layer can keep the cement particles in a better dispersed state, thereby reducing water consumption and increasing fluidity. The selected high-efficiency water reducer is β-naphthalenesulfonate formaldehyde condensate (such as SN-II high-efficiency water reducer, etc.), if it is less than 0.8%, the effect will not be obvious, if it exceeds 1.53%, it will affect the expansion of the grouting material sex.
6.为了加速水泥水化，我们选用了Na2CO3作为加速水泥水化剂，若加入量不足0.7％，则效果不明显，若加入量超过0.9％则造成(a)水泥的碱性太高，会造成水泥安定性不良，从而影响灌浆料的强度；(b)水泥稠化太快，不利于施工。6. In order to accelerate the cement hydration, we choose Na 2 CO 3 as the accelerated cement hydration agent. If the added amount is less than 0.7%, the effect will not be obvious. If the added amount exceeds 0.9%, it will cause (a) the alkalinity of the cement is too high If the cement is too high, it will cause poor stability of the cement, which will affect the strength of the grouting material; (b) The cement thickens too quickly, which is not conducive to construction.
本发明与现有技术相比较，具有如下显而易见的突出特点和显著优点：①对原料组成水泥进行了选择，使灌浆料具有足够强度而后期强度又不太高，而且取材较易，选用硅酸盐水泥为胶结料，并控制其含量为30～40％，达到抢修工程所需的灌浆料抗压强度要求：②原料组份中有早强剂，则大大缩短浇灌养护时间：并配以少量的缓凝剂，便于施工而不影响硬化时间，所以能在浇灌养护2～12小时以内，即可达到所需的抗压强度。本发明提供的超早强灌浆料，不但可用于机场停机坪、跑道、集装箱堆场等有时间限制的部位抢修，而且可用于设备基础、道路等的修复场合，用途广泛。Compared with the prior art, the present invention has the following obvious outstanding features and significant advantages: ① The raw material composition cement is selected, so that the grouting material has sufficient strength and the later strength is not too high, and it is easier to obtain materials, and silicic acid is selected Salt cement is the cementing material, and its content is controlled at 30-40% to meet the compressive strength requirements of the grouting material required for emergency repair projects: ② There is an early-strength agent in the raw material component, which greatly shortens the watering and curing time: and a small amount The advanced retarder is convenient for construction without affecting the hardening time, so the required compressive strength can be achieved within 2 to 12 hours of watering and curing. The super-early-strength grouting material provided by the invention can not only be used for emergency repairs of time-limited parts such as airport aprons, runways, container yards, etc., but also can be used for repairing equipment foundations, roads, etc., and has a wide range of uses.
下面给出实施例：Examples are given below:
实施例一：Embodiment one:
本超早强灌浆料的原料组成配比按重量计为：625R硅酸盐水泥33.87％，中粗黄砂50.8％，SH外掺剂12.7，Na2CO3 0.85％，柠檬酸0.255％，SN-II高效减水剂1.525％。The raw material ratio of this super early strength grouting material is as follows by weight: 625R Portland cement 33.87%, medium-coarse yellow sand 50.8%, SH external admixture 12.7, Na 2 CO 3 0.85%, citric acid 0.255%, SN- II superplasticizer 1.525%.
本超早强灌浆料浇灌养护1小时就已硬化，养护2小时后设备投入运行，使用效果良好。抗压强度的测量参照中国国标GBJ81-85《普通混凝土力学性能试验方法》，其测试结果如下：The super-early-strength grouting material hardens within 1 hour of watering and curing, and the equipment is put into operation after 2 hours of curing, and the use effect is good. The measurement of compressive strength refers to the Chinese national standard GBJ81-85 "Test Method for Mechanical Properties of Ordinary Concrete", and the test results are as follows:
流动度(S)为：6～8Fluidity (S) is: 6~8
抗压强度(MPa)为：2小时 4小时 6小时 1天 3天 28天Compressive strength (MPa): 2 hours 4 hours 6 hours 1 day 3 days 28 days
20.5 25.0 25.5 36.4 58 60.920.5 25.0 25.5 36.4 58 60.9
本超早强灌浆料不但早期强度高、流动性好，而且施工性能也较好，在使用过程中未发现还未搅拌均匀就已固结的现象。The super-early-strength grouting material not only has high early strength and good fluidity, but also has good construction performance, and there is no phenomenon that it has been consolidated before being evenly stirred during use.
实施例二：Embodiment two:
本超早强灌浆料的原料组成配比按重量计为：625R硅酸盐水泥34.4％，中粗黄砂51.5％，SH外掺剂12.03％，Na2CO3 0.775％，柠檬酸0.258％，SH-II高效减水剂1.03％。The composition ratio of raw materials of this super early strength grouting material is as follows by weight: 625R Portland cement 34.4%, medium-coarse yellow sand 51.5%, SH external admixture 12.03%, Na 2 CO 3 0.775%, citric acid 0.258%, SH -II superplasticizer 1.03%.
其测试性能结果如下：The test performance results are as follows:
流动度(S)为：4～6Fluidity (S) is: 4~6
抗压强度(MPa)为：2小时 6小时 3天 28天The compressive strength (MPa) is: 2 hours 6 hours 3 days 28 days
17.7 21.6 54 63 ,
实施例三：Embodiment three:
本超早强灌浆料的原料组成配比按重量计为：625R硅酸盐水泥35.8％，中粗黄砂53.7％，SH外掺剂8.95％，Na2CO3 0.72％，柠檬酸0.0895％，SH-II高效减水剂0.81％。The ratio of raw materials of this super early strength grouting material is as follows by weight: 35.8% of 625R Portland cement, 53.7% of medium-coarse yellow sand, 8.95% of SH external admixture, 0.72% of Na 2 CO 3 , 0.0895% of citric acid, SH -II superplasticizer 0.81%.
其测试性能结果如下：The test performance results are as follows:
流动度(S)为：6～7Fluidity (S) is: 6~7
抗压强度(MPa)为：2小时 12小时 1天 3天 28天Compressive strength (MPa): 2 hours 12 hours 1 day 3 days 28 days
11.5 25.1 28 50 63注：流动度测试标准参见BZQ(JJ)0061-96
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100336767C (en) * | 2006-06-01 | 2007-09-12 | 同济大学 | Self compacting high strength mortar |
| CN100336765C (en) * | 2006-05-11 | 2007-09-12 | 同济大学 | Self-compacted concrete of resisting erosion of sulfate and its preparing method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381389C (en) * | 2006-07-13 | 2008-04-16 | 内蒙古科技大学 | A performance-adjustable non-shrinkage grouting material |
| CN100381386C (en) * | 2006-07-13 | 2008-04-16 | 内蒙古科技大学 | Retarding high-efficiency water reducer for concrete |
| CN101353244B (en) * | 2008-02-27 | 2013-03-27 | 北京纽维逊建筑工程技术有限公司 | Rapid grout for railroad bridge bearing |
| CN101767962B (en) * | 2009-01-06 | 2012-12-12 | 上海罗洋新材料科技有限公司 | Pore canal grouting concrete for buildings |
| CN102115320B (en) * | 2009-12-31 | 2013-05-01 | 北京市建筑工程研究院有限责任公司 | Super early strength mortar |
| CN102173708A (en) * | 2011-02-10 | 2011-09-07 | 乌鲁木齐市建筑建材科学研究院有限责任公司 | Aggregate-free cement-based grouting material |
| CN103553473B (en) * | 2013-11-04 | 2015-09-09 | 中国建筑第二工程局有限公司 | Retarding cement paste for prestressed pipeline grouting and preparation method thereof |
| CN110894149A (en) * | 2018-09-13 | 2020-03-20 | 张艳萍 | Super-early-strength 3D printing building ink and construction method thereof |
| CN112939503B (en) * | 2021-04-08 | 2022-10-11 | 四川省佳宇建设集团有限公司 | Ordinary portland cement-based super-early-strength super-high-strength inorganic grouting material and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100336765C (en) * | 2006-05-11 | 2007-09-12 | 同济大学 | Self-compacted concrete of resisting erosion of sulfate and its preparing method |
| CN100336767C (en) * | 2006-06-01 | 2007-09-12 | 同济大学 | Self compacting high strength mortar |
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