CN1396138A - Fast anchor type inorganic viscose grouting matenial and its preparing process - Google Patents

Fast anchor type inorganic viscose grouting matenial and its preparing process Download PDF

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CN1396138A
CN1396138A CN 02138777 CN02138777A CN1396138A CN 1396138 A CN1396138 A CN 1396138A CN 02138777 CN02138777 CN 02138777 CN 02138777 A CN02138777 A CN 02138777A CN 1396138 A CN1396138 A CN 1396138A
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cement
anchor
portland cement
strength
gypsum
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CN 02138777
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CN1182065C (en )
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李北星
陈明祥
高作平
陈幼康
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武汉武大巨成加固实业有限公司
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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
    • C04B28/06Aluminous cements
    • C04B28/065Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/20Retarders
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2103/00Function or property of ingredients for mortars, concrete or artificial stone
    • C04B2103/40Surface-active agents, dispersants
    • C04B2103/408Dispersants
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/70Grouts, e.g. injection mixtures for cables for prestressed concrete

Abstract

An adhesive inorganic pouring material for fast anchor rod or prestressed anchor rope is prepared from thioaluminate cement and silicate cement as main components) blanding with fine gypsum, anti-cracking agent, disperser, and setting retarder through uniformly mixing, on using, it is mixed with proper amount of water to form a slurry for pouring. Its advantages are high self-compacting performance, high strength and bonding, and no poison and environmental pollution.

Description

一种快锚型无机粘结灌注材料及其制备工艺 Inorganic binder in fast anchor potting material and its preparation process

技术领域 FIELD

本发明涉及一种锚固粘结灌注材料及其制备工艺,主要作为锚杆、预应力锚索的粘结材料进行快速锚固施工的锚固注浆材料及其制备工艺。 The present invention relates to an anchoring adhesive potting material and its preparation process, mainly as a bolt, an adhesive material is prestressed anchor anchor grouting material and its preparation process of the quick anchoring construction.

背景技术 Background technique

在岩土工程中使用锚固技术在国际上始于20世纪20年代。 Use anchoring technique in geotechnical engineering began in the 1920s in the international arena. 国内外大量实践证明,锚固技术对于地表、地下的各种大、中、小型岩土加固工程,的确是一种高效、经济的加固措施。 Practice has proved that a large number of domestic and foreign, anchoring technology for surface and underground various big, medium and small rock reinforcement works, is indeed an efficient, economical reinforcement measures. 近年来,随着岩土锚固理论研究的深入,锚固技术得到了迅速发展和广泛的应用,几乎触及到土木建筑、水利水电等领域的各个角落,如矿山井巷、隧道工程和地下洞室等地下工程的锚杆支护以及道桥基础加固、高陡边坡稳固、大型弧门闸墩加固、坝基加固和各种现有建筑物的补强与加固等方面。 In recent years, along with in-depth theoretical study of rock anchoring, anchoring technology has been rapid development and wide application, almost touching the field of civil construction, water conservancy and hydropower every corner, such as mine shaft, tunnels and underground caverns and other engineering bolt support and underground engineering bridge foundation reinforcement, high and steep slope stability, large radial gate pier reinforcement, reinforcement and foundation reinforcement and strengthening other aspects of the existing building. 锚固技术的发展,使锚固方式越来越多,目前有机械式锚固、粘结式锚固、摩擦式锚固、预应力锚固等多种形式,其中以使用粘结式锚固所占的比例最大,我国目前工程中使用的粘结式锚固材料主要有水泥砂浆、快硬水泥药卷和树脂药卷三种类型。 Anchoring Technology for Development, the way of anchoring more and more, there are mechanical anchoring, anchoring bond type, friction-type anchor, prestressed anchor and other forms, of which the proportion bond Anchoring the largest share of our country anchors different bond materials used in the project are mainly cement mortar, cement rapid hardening resin Cartridge and Cartridge three types.

水泥砂浆锚固材料是以普通硅酸盐水泥为主材,必要时掺入一定量的外加剂,如早强剂、减水剂、缓凝剂、膨胀剂和抗泌剂等。 Cement mortar anchor material is Portland cement-based materials, mixed with a certain amount of additives, if necessary, such as hardening accelerator, water reducing agents, retarders, anti-secretion agents and bulking agents. 其特点是采用注浆法施工,成本低,但其早期强度低,不能及时产生粘结力和握裹力,即使是掺有早强剂、减水剂等外加剂的水泥砂浆也难以在3~6小时内提供足够的拉拔力。 Which is characterized by grouting construction, low cost, low early strength, the adhesive force can not be generated in time and bondability, even mixed with cement mortar early strength agent, water reducing admixtures are also difficult to 3 - providing a sufficient drawing force within 6 hours. 同时,温度对普通水泥水化反应速度影响较大,且施工质量不易保证。 Meanwhile, a large temperature effect on the reaction rate of hydration of portland cement, and construction quality assurance difficult. 一般来说,普通水泥砂浆锚杆需要经过7天以上才能满足设计的抗拔力要求,严重影响下一道工序的施工进度。 In general, ordinary cement mortar anchor need to go through more than seven days in order to meet the construction schedule a process designed under a pullout resistance requirements seriously affected. 普通水泥砂浆注浆时,水灰比的影响很大,水灰比过小,可注性差,也容易堵管,影响注浆作业的进行;水灰比过大,杆体插入后,砂浆易往外流淌,孔内砂浆不饱满,影响锚固效果。 Ordinary cement mortar grouting, a great influence of water-cement ratio, water-cement ratio is too small, poor injection can also easily plugging, Influence grouting operation; water-cement ratio is too large, the rod is inserted, the mortar out easily flowing, hole mortar is not full, it affects the anchoring effect. 水泥砂浆锚杆注浆时还容易造成砂浆空洞、浆体不密实,早强强度低、锚固力提供慢、一般不能施加预应力的问题。 Of Cement mortar grouting Shihai likely to cause cavities, the slurry is not dense, low early strength strength, anchoring force providing slow, generally can not be applied to the problem of pre-stressed.

快硬水泥药卷一般是在氟铝酸盐水泥、快硬硫铝酸盐水泥中添加早强剂或在普通硅酸盐水泥中添加速凝剂、膨胀剂等制成的具有快凝、快硬、早强、微膨胀、初期锚固力大的药卷式锚固材料,它既可用于端头锚固,也可用于全长粘结式锚固。 Cartridge rapid hardening cement early strength agent is generally added in the fluorine-aluminate cement, rapid hardening sulphoaluminate cement quick-setting or added, bulking agents and the like in ordinary Portland cement produced has a rapidly solidified, fast hard, early strength, micro-expansion, anchoring force large initial drug anchor material roll, it is intended for anchoring the ends, may also be used grouted anchor. 普通硅酸盐水泥快硬药卷一般1~3小时抗压强度为4~20MPa,1天抗压强度25~35MPa,快硬硫铝酸盐水泥药卷一般0.5~1h抗压强度为20~25MPa,2h抗压强度30MPa以上。 Rapid hardening Portland cement Cartridge generally 1-3 hours a compressive strength of 4 ~ 20MPa, 1 day compressive strength of 25 ~ 35MPa, rapid hardening cement sulphoaluminate Cartridge compressive strength is generally 0.5 ~ 1h ~ 20 25MPa, 2h compressive strength of 30MPa or more. 这两种快硬水泥药卷一般初凝时间小于5min,终凝小于10min,0.5~1h锚固力根据岩层不同一般可达40~120KN,1d的拉拔力一般可超过锚杆杆体的拉断力。 Both rapid hardening cement setting time is generally less than Cartridge 5min, final setting is less than 10min, 0.5 ~ 1h depending on the anchoring force usually ranging from formation 40 ~ 120KN, 1d pulling force generally in excess of the anchor rod tensile force . 快硬水泥药卷在使用中仍然存在一定问题,如其结构复杂,制作工艺要求高;直径需根据现场需要来定作;制作成本较高,运输、储存不便等问题。 Cartridge rapid hardening cement remain some problems in use, such as its complex structure and high manufacturing process requirements; diameter required according to the site needs to be set; high manufacturing cost, transport, storage problems such as inconvenience. 使用时要求水泥与水混合均匀,水灰比适宜,因此对药卷浸水时间控制非常严格,因为当水泥药卷浸水时间超过水泥终凝时间,水泥药卷会发热、变硬,只能报废,故浸水后的药卷应立即用杆体送入孔底,不能有任何延迟,并且锚杆安装还要求机械连续搅拌,因此快硬水泥药卷锚杆的安装存在可操作时间短、可操作性差,对施工组织管理要求非常严格,一旦某一环节出错,不仅锚固失效,而且废掉孔洞和浪费药卷。 When using water requirements of cement mixed with, a suitable water-cement ratio, so the volume of the drug very strict control of immersion times, because when the soaking time exceeds cement Cartridge final setting time of the cement, cement drug volume will heat and harden only scrapped, Therefore, after water immersion drug volume to be fed immediately shaft hole bottom, you can not have any delay, and the bolt installation also requires continuous mechanical stirring, so the presence of rapid hardening cement mounting bolt drug volume operable time is short, poor operability, construction organization and management requirements are very strict, once a link error, not only anchor failure, and destroy holes and wasted drug volumes.

树脂药卷是以不饱和聚酯树脂及固化剂等组成,其特点是固化时间短(由几十秒到几分钟),强度增长快(半小时抗压强度可达28d强度的65%~96%),强度高(最终抗压强度达60~120MPa),因此能及时提供支护能力,因其成本高,故一般只用作端头锚固。 Cartridge resin is an unsaturated polyester resin and curing agent composition, which is characterized by short curing times (several tens of seconds to a few minutes), fast strength development (half-hour compressive strength of up to 65% 28d 96 %), high strength (ultimate compressive strength of 60 ~ 120MPa), it is possible to provide timely support capability, because of its high costs, it is generally used only as an anchor end. 树脂药卷与水泥药卷一样制作比较复杂,安装树脂锚杆的搅拌机具需用旋转式锚杆机或风动搅拌器,以迅速推锚杆入孔位并将树脂和固化剂搅拌均匀,施工环境温度和湿度对树脂固化速度和锚固效果影响大,还存在有毒,储存期长易失效、容易老化的问题。 Cartridge resin cement production is more complex as drug volume, having a stirrer mounting bolt resin required rotary dryer or pneumatic stirrer bolt to quickly push the bolt into the hole and the resin and the curing agent stir, construction effect of humidity and temperature curing rate of the resin and the anchor effect, there is also toxic, long storage period prone to failure, easy to aging problems.

为此,提供一种能把水泥砂浆锚杆的注浆施工简便和快硬水泥(树脂)药卷锚杆初期锚固力高的优点结合起来,可采用注浆法进行方便施工,又能产生较大初期强度的快锚型无机粘结灌注材料尤为必要。 To this end, there is provided a cement mortar grouting can simple and rapid hardening cement anchor (resin) the advantages of high initial drug volume bolt anchoring force combined, can be used for convenient grouting construction, but also produce more large fast initial strength inorganic adhesion anchor type potting material is particularly necessary.

发明内容 SUMMARY

本发明的目的是针对现有水泥砂浆锚杆、快硬水泥药卷锚杆和树脂药卷锚杆所存在的问题和不足,旨在提供一种可灌、快硬,硬化后初期强度增长快,1天、后期强度高,微膨胀、耐水、耐久性好,施工简便、价格低廉,使锚杆或锚索安装快、承载快、安全可靠的快锚型无机粘结灌注材料。 The present invention is directed to conventional cement mortar anchor, rapid hardening cement Cartridge anchor bolt and the resin Cartridge the problems and shortcomings, it is intended to provide a filling, rapid hardening, the initial strength after hardening fast growth 1 day post-high strength, micro-expansion, water resistance, durability, construction is simple, inexpensive, quick to install anchor or anchor bar carries fast, safe, quick and reliable anchor inorganic adhesive potting material.

本发明目的的实现方式为,一种快锚型无机粘结灌注材料,其特征在于它是由硫铝酸盐水泥和硅酸盐水泥为主要组分,掺入适量的磨细石膏、抗裂剂、分散剂、缓凝剂在混合机中共同混合而成的均匀粉料,各成分的重量配比%范围为: The object of the present invention is an implementation of a fast infusion anchor inorganic binder material, characterized in that it is composed of sulfur aluminate cement and Portland cement as the main component, mixed with appropriate amount of ground gypsum, cracking agents, dispersing agents, retarders are mixed together in a mixer to a uniform powder, the weight% range of the ratio of each component is:

硫铝酸盐水泥:60%~85% 硅酸盐水泥:10%~30%石膏:1.5%~5% 抗裂剂:1.5%~5%分散剂:0.6%~1.6% 缓凝剂:0%~0.6%其中:抗裂剂为明矾石膨胀剂、UEA膨胀剂或石灰系膨胀剂,分散剂为萘磺酸盐甲醛缩合物系高效减水剂粉剂,三聚氰胺甲醛树脂粉剂或磺化古马龙树脂粉剂,缓凝剂为硼酸、硼砂、酒石酸、柠檬酸或木质素磺酸钙。 Sulphoaluminate cement: 60% to 85% of Portland cement: 10% to 30% Gypsum: 1.5% to 5% cracking agent: 1.5% to 5% dispersant: 0.6 to 1.6% Retarder: 0 % to 0.6%, wherein: cracking agent is alunite expansion agent, the UEA expanders or lime-based bulking agent, a dispersing agent is a naphthalene sulfonate formaldehyde condensate superplasticizer based powders, melamine resin powders or sulfonated ancient Malone resin powders, retarder as boric acid, borax, tartaric acid, citric acid or calcium lignosulfonate.

一种快锚型无机粘结灌注材料的生产工艺为,将重量配比为:60%~85%的硫铝酸盐水泥、10%~30%硅酸盐水泥、1.5%~5%磨细石膏、1.5%~5%抗裂剂、0.6%~1.6%分散剂、0%~0.6%缓凝剂粉料按先加比例大的物料,后加比例小的物料的投料顺序加入到混合机或球磨机中,在常温常压下,混合10min~30min,至均匀,其细度为:0.08mm方孔筛筛余不大于10%,勃氏比表面积不低于325m2/kg。 Inorganic bonded anchor in fast production process for the potting material, the weight ratio of: 60% to 85% cement, 10% to 30% Portland cement, 1.5% to 5% milled gypsum, 1.5% to 5% cracking agent, 0.6 to 1.6% dispersant, feeding sequence from 0% to 0.6% retarder powder by adding a large proportion of the first material, after adding a small proportion of material added to the mixer or a ball mill, at ambient temperature and pressure, mixed 10min ~ 30min, to a uniform, its fineness: 0.08mm square mesh sieve is not more than 10% greater than, a Blaine specific surface is not less than 325m2 / kg.

本发明的硫铝酸盐水泥为快硬硫酸盐水泥、快硬铁铝酸盐水泥、膨胀硫铝酸盐水泥或膨胀铁铝酸盐水泥,要求标号不低于425号。 Sulfur present invention aluminate cement rapid hardening cement sulfate, iron rapid hardening cement, sulfur cement or expanding expandable iron aluminate cement, requires numeral not less than 425. 硫铝酸盐水泥主要为快锚型无机粘结灌注材料提供早期粘结性能和硬化初期的强度,一般其掺量多,凝结硬化时间短,硬化初期强度产生快。 The main faster sulphoaluminate cement type inorganic adhesion anchor potting material to provide initial strength and adhesive properties early hardening, which is generally a multi-dosage, setting and hardening time is short, the initial setting intensity generating fast.

硅酸盐水泥为普通硅酸盐水泥或纯硅酸盐水泥,要求强度等级不低于42.5MPa。 Portland cement is a Portland cement or pure Portland cement, the required strength level is not less than 42.5MPa. 硅酸盐水泥水化产生的Ca(OH)2为硫铝酸盐水泥的水化提供了碱性环境,可以加速后者的水化进程,因此硅酸盐水泥的作用不仅是提供了后期强度,更重要的是可以加快硬化初期强度的产生。 Portland cement hydration resulting Ca (OH) 2 sulphoaluminate cement hydration provides an alkaline environment, which can accelerate the process of hydration, thus acting Portland cement is not only to provide strength late and more importantly, can accelerate hardening produced initial strength. 硅酸盐水泥掺量不仅影响凝结时间,还对强度,特别是早期强度产生重要影响。 Portland cement content not only affects the setting time, also on the strength, in particular an important impact on the early strength. 随着硅酸盐水泥掺量增加,一开始是凝结硬化时间变短,3~6h强度增加,当其掺量增加到一定程度后,硅酸盐水泥掺量增加凝结又延长,3~6h强度降低。 With the increase of Portland cement content, it began as a setting and hardening time is shortened, increasing the strength 3 ~ 6h, after which dosage to a certain extent, and Portland cement content increased coagulation extended, strength 3 ~ 6h reduce. 这从表1中清楚可见。 It is clear from Table 1. 表1 硫铝酸盐水泥与硅酸盐水泥相对掺量对快锚型无机粘结灌注材料凝结与强度性能的影响(采用525快硬硫铝酸盐水泥和42.5普通硅酸盐水泥) Table 1 Effect of Sulfur fast anchor inorganic coagulant and adhesive strength properties of the potting material aluminate cement and Portland cement opposite Volume (using 525 sulfur cement and rapid-hardening Portland cement 42.5)

掺入石膏主要影响水化产物的相对数量和膨胀性能,即对强度和抗裂性产生一定程度影响。 Incorporating gypsum and primarily affects the relative amount of expansion properties of the hydration products, i.e., a certain degree of impact strength and crack resistance.

加入抗裂剂的主要作用是补偿快锚型无机粘结灌注材料硬化体的收缩,防止开裂。 The main effect of cracking agent is added to compensate fast perfusion anchor type inorganic adhesion of the hardened material shrinkage, to prevent cracking.

分散剂包括萘磺酸盐甲醛缩合物系高效减水剂粉剂(国内产品代号有UNF、NNO、FDN、NF、建1、JN、ZB-1、AF、SN等),三聚氰胺甲醛树脂粉剂(代号SM)、磺化古马龙树脂粉剂(代号CRS)等。 Dispersants include naphthalene sulfonate formaldehyde condensate superplasticizer based powder (product code with a domestic UNF, NNO, FDN, NF, building 1, JN, ZB-1, AF, SN, etc.), a melamine formaldehyde resin powder (Code SM), sulfonated ancient Malone resin powder (code CRS) and the like. 加入分散剂的作用是提高快锚型无机粘结灌注材料的流动度、降低灌注材料水料比、改善灌注材料均匀性和浆体孔结构,从而提高灌注材料的可灌性和强度。 Dispersant effect is to increase the fluidity fast anchor type inorganic adhesion of the potting material, the potting material reducing the ratio of water to improve the uniformity and potting material paste pore structure, thereby improving filling of the potting material and strength.

缓凝剂掺量根据工程的实际需要掺加,用于调节灌注材料的凝结硬化时间,从而满足灌注施工和强度要求。 The actual dosage required retarder spiked engineering, for adjusting the setting and hardening time of the potting material, and to meet the strength requirements perfusion construction. 一般掺量越大,凝结越长,硬化初期强度越低,而后期强度有所增加。 The larger the general content, the longer the coagulation, the lower the initial setting strength and late strength increased.

本发明各组分原材料均可以从生产厂家或市场上购买到。 Each component material of the present invention can be purchased from the manufacturer or to the market.

快锚型无机粘结灌注材料的施工方法与普通水泥浆液或砂浆锚杆类似。 Fast construction method anchor inorganic adhesive potting material and ordinary cement slurry or mortar anchor the like. 使用时水料比为0.29~0.32,灰砂比为1∶(0~0.8),采用砂浆搅拌机进行搅拌,搅拌时间不少于2min,注浆设备与普通水泥浆液或水泥砂浆相同。 When water feed ratio of 0.29 to 0.32, lime-sand ratio of 1 (0 to 0.8), using mortar mixer for mixing, mixing time less than 2min, grouting equipment with ordinary cement slurry or cement mortar same.

本发明主要作为锚杆、预应力锚索的粘结材料进行快速锚固施工,包括水电、矿山、建筑、国防等领域的岩土工程的锚杆锚固、锚喷支护和混凝土植筋加固,以及混凝土工程紧急抢修施工等。 The invention mainly as a bolt, prestressed cable anchor adhesive material for rapid construction, including bolt anchoring geotechnical engineering in the field of hydropower, mining, construction, defense, bolting and shotcrete lining and concrete anchorage reinforcement, and concrete Engineering emergency repair works. 本快锚型无机粘结灌注材料与传统的水泥砂浆和快硬水泥药卷、树脂药卷等粘结锚固材料比较,主要优点表现在:(1)浆体凝结前自流、不泌水、可灌注入孔、自密实性能好,凝结时间在1小时至4小时之间可调,使用方便、施工快捷、容易掌握。 This faster anchor inorganic binder with conventional potting material and rapid hardening cement mortar cement drug volume, drug volume resin adhesive anchoring material and the like, in the performance of the main advantages: (1) the slurry before coagulation gravity, no bleeding, may infused into the hole, good self-compacting properties, setting time between 1-4 hours adjustable, easy to use, quick construction, easy to grasp.

(2)浆体硬化后立即产生强度,1天强度及中、后期强度高,解决了现有水泥药卷因提高早期强度而损失中、后强度的问题,且硬化体有一定量的微膨胀,提高了硬化体与锚杆杆体、孔壁的粘结力,使锚杆安装快、承载快、抗拔力高。 (2) hardening occurs immediately after the slurry strength, and one day strength, the post-high strength, solves drug volume loss in the cement, the strength of the problems due to improve the early strength and the hardened body with a certain amount of micro-expansion, improved anchor rod with a cured, adhesion of the cell walls, so that quick installation bolt, carrier, high pullout resistance. 3h抗压强度大于20MPa,6h抗压强度大于35MPa;1d抗压强度大于50MPa,28d抗压强度大于60MPa。 3h compressive strength greater than 20MPa, 6h compressive strength greater than 35MPa; 1d compressive strength greater than 50MPa, 28d compressive strength greater than 60MPa. 3h~6h的抗拔力大于80KN,1d后的拉拔力基本上可超过锚杆杆体的拉断力。 3h ~ 6h pullout force is greater than 80KN, pulling force may exceed the substantially 1d tensile force of the anchor rod.

(3)由于浆液颗粒细小、流动性好、固结能力强,因此在一定注浆压力下渗透性好,可同时起到固结破碎岩体或固结地层的作用。 (3) Since the slurry of fine particles, fluidity, strong consolidation capability, under certain grouting pressure so good permeability, broken rock consolidation can play a role in unconsolidated formations or simultaneously.

(4)硬化体在较低温度(如10~15℃)下,强度发展受影响小,特别适合洞室较低温度下施工。 (4) hardened at lower temperatures (e.g., 10 ~ 15 ℃), little affected by the strength development, especially for lower temperatures cavern construction.

(5)材料生产制备工艺简单、无毒、无害,不污染环境,易于储存、运输,综合成本低于快硬水泥药卷,比树脂药卷低得更多。 (5) Preparation of a material production process is simple, innocuity, no pollution, easy to store, transport, rapid hardening cement overall costs lower than drug volume, lower than the resin Cartridge more.

具体实施方式 detailed description

以525标号快硬硫铝酸盐水泥、42.5强度等级普通硅酸盐水泥、磨细二水石膏、UEA-I膨胀剂、FDN高浓高效减水剂、硼酸为原材料制备本快锚型无机粘结灌注材料的具体实施例见表2。 Reference numeral 525 in rapid hardening cement, ordinary Portland cement strength grade 42.5, finely ground gypsum, UEA-I expansion agent, the FDN high concentration of superplasticizer, and boric acid as starting material was prepared according to the present quick inorganic adhesive anchor specific examples junction potting material are shown in Table 2.

表2快锚型无机粘结灌注材料的重量配比实施例 Table 2 Fast weight inorganic anchor adhesive potting material ratio Example 生产工艺及参数为:各种原材料按预定比例准确称量后,按先加比例大的物料、后加比例小的物料的投料顺序依次加入一个VSH-0.5m3型悬臂双螺旋锥形混合机中进行混合搅拌,混合20min即得到均匀的产品。 Production process and parameters: After various materials accurately weighed at a predetermined ratio, by adding a large proportion of the first material, feeding sequence after adding a small proportion of material added sequentially VSH-0.5m3 a cantilever double helix blender cone were mixed stirred and mixed to obtain a homogeneous product 20min.

表3列出5#配比试样和8#配比试样主要物理力学性能测定结果。 Table 3 lists the ratio of Sample # 5 and # 8 ratio of physical mechanical properties of the main sample measurement result.

表3快锚型无机粘结灌注材料主要物理力学性能结果 Table 3 Fast anchor type main physical and mechanical properties of the inorganic adhesive potting material results

从表3结果可以看出:本发明的5#配比试样凝结时间在55min~80min之间,可灌时间30min~35min,这为现场施工提供了比较充足的时间,可避免堵泵堵管。 As can be seen from the results in Table 3: 5 ratio of sample # clotting time according to the present invention is between 55min ~ 80min, can fill time 30min ~ 35min, which provides a more adequate site construction time, to avoid plugging the pump block . 另外,其自流性和粘聚性很好,因此可以加速注浆速度,改善浆液与孔壁和钢筋的粘结性能。 Further, its gravity and good cohesiveness, and therefore can accelerate the speed of grouting, the slurry and improve the bonding properties of the cell walls and steel. 实验结果表明,在灌注入孔3h后其抗压强度可达到25MPa,3h抗拔力大于80MPa,24h抗拔时大多数钢筋拉断,最小抗拔力也达到180KN。 Experimental results show that, after filling the injection hole compressive strength of up to 25MPa 3h, 3h pullout force is greater than 80MPa, and 24h pullout pull off most of steel, has reached a minimum pullout force of 180KN. 因此,从性能结果来看,5#配方试样能够满足3h抗拔要求的锚固工程。 Thus, the performance results, formulation # 5 specimens meet requirements 3h uplift anchor engineering.

将5#配比试样加入粒径小于2.5mm的河砂,同样进行力学试验和锚杆试验,灰砂比1∶0.50,水灰比0.32。 The ratio of sample # 5 was added river sand particle size less than 2.5mm, and the same tests for mechanical anchor test, than 1:0.50 lime sand-cement ratio 0.32. 试验结果为:凝结时间略有延长,初凝78min,终凝115min,3h抗压强度降低为15.4MPa,6h抗压强度降为31.6MPa,1d和后期强度影响不大,6h锚杆抗拔力测定结果为125KN以上。 Test results: slightly extended coagulation time, the initial setting 78min, final setting 115min, 3h reduced to 15.4 MPa compressive strength, 6h reduced compressive strength 31.6MPa, and late strength of not 1d, 6h anchor pullout The measurement results of 125KN above.

从表3结果可以看出:8#配比试样比5#配比试样有更长的凝结时间和可灌时间,因此更有利于现场从容施工。 As can be seen from the results in Table 3: # 8 ratio of the sample have a longer setting time and time than filling ratio sample # 5, and therefore more conducive to calm construction site. 虽然8#配比试样3h未能产生强度,但其6h抗压强度非常高,达到40MPa以上。 Although the ratio of sample # 8 failed to produce intensity 3h, 6h but its compressive strength is very high, reaching above 40MPa. 由于锚杆试验是在某一水电工程的交通洞进行生产试验,达到设计抗拔力(设计值120KN,6h要求达到最终抗拔力的70%)即停止拉拔。 As the anchor tests were carried out a production test in Access Tunnel hydropower projects, to meet the design pullout resistance (design value 120KN, 6h final pullout force required to achieve 70 per cent) stop drawing. 由表3可以看出,6h抗拔力在85MPa以上,1d抗拔力124MPa以上,完全能满足6h抗拔要求。 As can be seen from Table 3, 6h pullout force above 85MPa, 1d pullout strength 124MPa or more, can meet the requirements pullout 6h. 这样一个结果是采用普通水泥砂浆注浆3~7d内才可能满足的。 Such a result is to use ordinary cement mortar grouting it may meet within 3 ~ 7d.

将8#配比试样加入粒径小于2.5mm的河砂,同样进行力学试验和现场锚杆试验,灰砂比1∶0.5,水灰比0.31。 The ratio of sample # 8 was added river sand particle size less than 2.5mm, for the same mechanical tests and field trials anchor, lime sand than 0.5, water-cement ratio 0.31. 实验结果为:初凝结时间延长至190min,终凝延长至240min,6h抗压强度为34.4MPa,1d和后期强度影响不大,6h抗拔力同样达到85MPa以上,满足设计要求。 Experimental results: First to extend the setting time of 190 min, 240min extended to final setting, 6h compressive strength of 34.4MPa, and late strength of not 1d, 6h pullout force to achieve the same 85MPa or more, to meet the design requirements.

Claims (5)

  1. 1.一种快锚型无机粘结灌注材料,其特征在于它是由硫铝酸盐水泥和硅酸盐水泥为主要组分,掺入适量的磨细石膏、抗裂剂、分散剂、缓凝剂在混合机中共同混合而成的均匀粉料,各成分的重量配比范围为:硫铝酸盐水泥:60%~85% 硅酸盐水泥:10%~30%石膏:1.5%~5% 抗裂剂:1.5%~5%分散剂:0.6%~1.6% 缓凝剂:0%~0.6%其中:抗裂剂为明矾石膨胀剂、UEA膨胀剂或石灰系膨胀剂,分散剂为萘磺酸盐甲醛缩合物系高效减水剂粉剂、三聚氰胺甲醛树脂粉剂或磺化古马龙树脂粉剂,缓凝剂为硼酸、硼砂、酒石酸、柠檬酸或木质素磺酸钙。 An inorganic adhesive anchor fast filling material, characterized in that it is composed of sulfur aluminate cement and Portland cement as the main component, mixed with appropriate amount of ground gypsum, cracking agents, dispersing agents, buffer setting admixture are mixed together in a mixer homogeneous powder, the weight ratio range of each component is: sulphoaluminate cement: 60% to 85% of Portland cement: 10% to 30% gypsum: 1.5% 5% cracking agent: 1.5% to 5% dispersant: 0.6 to 1.6% retarder: 0 to 0.6% wherein: cracking agent is alunite expansion agent, the UEA expanders or lime-based extenders, dispersing agents naphthalene sulfonate formaldehyde condensate superplasticizer based powders, melamine resin powders, resin powders or sulfonated ancient Malone, retarder as boric acid, borax, tartaric acid, citric acid or calcium lignosulfonate.
  2. 2.根据权利要求1所述的灌注材料,其特征在于硫铝酸盐水泥为快硬硫酸盐水泥、快硬铁铝酸盐水泥、膨胀硫铝酸盐水泥或膨胀铁铝酸盐水泥。 2. The potting material according to claim 1, characterized in that the sulphoaluminate cement rapid hardening cement sulfate, iron rapid hardening cement, sulfur cement or expanding expandable iron aluminate cement.
  3. 3.根据权利要求1所述的灌注材料,其特征在于硅酸盐水泥为普通硅酸盐水泥或纯硅酸盐水泥。 3. The potting material according to claim 1, characterized in that the Portland cement is Portland cement or pure Portland cement.
  4. 4.根据权利要求1所述的灌注材料,其特征在于石膏为磨细的天然二水石膏或硬石膏,其比表面积不低于300m2/kg,三氧化硫含量不低于35%。 The potting material according to claim 1, characterized in that the gypsum is finely ground natural gypsum or anhydrite, the specific surface area of ​​not less than 300m2 / kg, sulfur trioxide content of not less than 35%.
  5. 5.一种快锚型无机粘结灌注材料的生产工艺,其特征在于将重量配比为:60%~85%的硫铝酸盐水泥、10%~30%硅酸盐水泥、1.5%~5%磨细石膏、1.5%~5%抗裂剂、0.6%~1.6%分散剂、0%~0.6%缓凝剂粉料按先加比例大的物料,后加比例小的物料的投料顺序加入到混合机或球磨机中,在常温常压下,混合10min~30min,至均匀,其细度为:0.08mm方孔筛筛余不大于10%,勃氏比表面积不低于325m2/kg。 A fast anchor inorganic adhesive potting material production process, characterized in that the weight ratio of: 60% to 85% cement, 10% to 30% Portland cement, 1.5% feeding ground gypsum order of 5%, 1.5% to 5% cracking agent, 0.6 to 1.6% dispersant, from 0% to 0.6% retarder powder by adding a large proportion of the first material, after adding a small proportion of the material was added to a mixer or a ball mill, at ambient temperature and pressure, mixed 10min ~ 30min, to a uniform, its fineness: 0.08mm square mesh sieve is not more than 10% greater than, a Blaine specific surface is not less than 325m2 / kg.
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009015520A1 (en) * 2007-08-02 2009-02-05 Basf Construction Chemicals (Shanghai) Co. Ltd Cement-based grout composition
CN101450849B (en) 2007-11-30 2011-08-24 中国京冶工程技术有限公司 Expansion agent for composite high performance grouting
EP1866260A4 (en) * 2005-03-24 2012-01-25 Jacques Bertrand Dry grout composition and capsule for anchoring reinforcing member, dowel or anchor elements
CN102603259A (en) * 2011-12-21 2012-07-25 西北矿冶研究院 Binder for anchor rod
CN102606180A (en) * 2011-12-21 2012-07-25 西北矿冶研究院 Method for supporting lamellar soft rock laneway by wire rope anchors
US8323785B2 (en) 2011-02-25 2012-12-04 United States Gypsum Company Lightweight, reduced density fire rated gypsum panels
USRE44070E1 (en) 2005-06-09 2013-03-12 United States Gypsum Company Composite light weight gypsum wallboard
US8470461B2 (en) 2005-06-09 2013-06-25 United States Gypsum Company Light weight gypsum board
CN103193449A (en) * 2013-04-03 2013-07-10 巴斯夫浩珂矿业化学(中国)有限公司 Rapid-hardening micro-expansion hole sealing material
CN104033169A (en) * 2014-06-03 2014-09-10 尤洛卡矿业安全工程股份有限公司 Impact-resistant constant-resistance anchor cable
CN106396604A (en) * 2016-08-31 2017-02-15 武汉理工大学 Aluminophosphate cement-based steel bar-embedded material and preparation method thereof

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1866260A4 (en) * 2005-03-24 2012-01-25 Jacques Bertrand Dry grout composition and capsule for anchoring reinforcing member, dowel or anchor elements
USRE44070E1 (en) 2005-06-09 2013-03-12 United States Gypsum Company Composite light weight gypsum wallboard
US8470461B2 (en) 2005-06-09 2013-06-25 United States Gypsum Company Light weight gypsum board
WO2009016230A3 (en) * 2007-08-02 2009-05-22 Constr Res & Tech Gmbh Cement-based grout composition
WO2009015520A1 (en) * 2007-08-02 2009-02-05 Basf Construction Chemicals (Shanghai) Co. Ltd Cement-based grout composition
CN101450849B (en) 2007-11-30 2011-08-24 中国京冶工程技术有限公司 Expansion agent for composite high performance grouting
US8702881B2 (en) 2011-02-25 2014-04-22 United States Gypsum Company Method of making lightweight, reduced density fire rated gypsum panels
US8323785B2 (en) 2011-02-25 2012-12-04 United States Gypsum Company Lightweight, reduced density fire rated gypsum panels
US9623586B2 (en) 2011-02-25 2017-04-18 United States Gypsum Company Lightweight, reduced density fire rated gypsum panels
CN102603259A (en) * 2011-12-21 2012-07-25 西北矿冶研究院 Binder for anchor rod
CN102606180A (en) * 2011-12-21 2012-07-25 西北矿冶研究院 Method for supporting lamellar soft rock laneway by wire rope anchors
CN102606180B (en) 2011-12-21 2014-08-20 西北矿冶研究院 Method for supporting lamellar soft rock laneway by wire rope anchors
CN102603259B (en) 2011-12-21 2014-01-15 西北矿冶研究院 Binder for anchor rod
CN103193449A (en) * 2013-04-03 2013-07-10 巴斯夫浩珂矿业化学(中国)有限公司 Rapid-hardening micro-expansion hole sealing material
CN103193449B (en) * 2013-04-03 2015-02-18 巴斯夫浩珂矿业化学(中国)有限公司 Rapid-hardening micro-expansion hole sealing material
CN104033169A (en) * 2014-06-03 2014-09-10 尤洛卡矿业安全工程股份有限公司 Impact-resistant constant-resistance anchor cable
CN106396604A (en) * 2016-08-31 2017-02-15 武汉理工大学 Aluminophosphate cement-based steel bar-embedded material and preparation method thereof

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