CN1247480C - 水泥砂浆浆液 - Google Patents

水泥砂浆浆液 Download PDF

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Publication number
CN1247480C
CN1247480C CNB031418082A CN03141808A CN1247480C CN 1247480 C CN1247480 C CN 1247480C CN B031418082 A CNB031418082 A CN B031418082A CN 03141808 A CN03141808 A CN 03141808A CN 1247480 C CN1247480 C CN 1247480C
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slip casting
sand
densification
slurries
cement
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CN1513799A (zh
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谢彬
张冠军
黄均龙
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Shanghai Tunnel Engineering Co Ltd
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Shanghai Tunnel Engineering Co Ltd
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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
    • 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
    • C04B2111/00034Physico-chemical characteristics of the mixtures
    • C04B2111/00146Sprayable or pumpable mixtures
    • 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

一种水泥砂浆浆液,浆液配比(重量百分比)具体为:水泥6~30%,粉煤灰21~41%,膨润土4~6%,砂23~30%,水20~23%,聚胺类高分子聚合物0.55~0.75%,外掺剂0.25~0.35%。本发明具有实质性特点和显著进步,用本发明拌制的注浆浆液具有较高抗离析特征,同时具有保水、润滑性,提高泵送能力的作用,使高粘度、低坍落度的浆液能较好的适应机械要求。

Description

水泥砂浆浆液
技术领域
本发明涉及的是一种建筑工程材料领域的砂浆,特别是一种水泥砂浆浆液。
技术背景
压密注浆技术的发展历史可追溯到19世纪初期,法国土木工程师查理·贝里克尼(Charle Berigng)发明压力注浆施工法,将悬浮的粘土浆和石灰浆混合物,注入大坝基础中,修复被海浪损坏的部分。19世纪末20世纪初期,德国和比利时组成的矿山技术小组,研制出高压注浆泵,改进了注浆材料的混合方式等注浆工艺,并将之用到隧道和大坝建设中,奠定了现代注浆法的基础。随着社会的发展,建设难度的增加,规模扩大,对注浆材料的要求越来越高,注浆材料品种不断地开发应用,这对压密注浆技术的发展和提高起到推动作用。在《土建注浆施工与效果检测》(程骁、张凤祥编著,同济大学出版社)(P192页)一书中对压密注浆法做出了准确定义:“压密注浆法是一种把不易流动的惰性浆液注入材料压入地层中,在形成均凝固结体的同时,压密周围土体的方法”。目前国外压密注浆技术发展较快,他们不但在注浆材料上已实现高粘度、低坍落度,并在浆液中掺加了一定量的胶凝材料,提高浆液结实体强度,注浆设备也能够完全满足注浆材料的要求。由于注浆设备先进、注浆材料的优良,国外压密注浆技术已广泛应用于地基加固、房屋纠偏和基础托换等领域。而国内由于注浆设备的限制、注浆材料的单一,注浆浆液目前只限于用较薄、易于流动、高坍落度的水泥砂浆浆液来提高浆液泵送效率,阻碍了该工法在这领域的发展。现有压密注浆技术存在着以下缺陷:(1)受注浆设备泵送能力地限制,浆液坍落度大则加固范围难控制,坍落度小则浆液离析大而堵管;(2)加固浆液结实体收缩大,加固效果不理想。
发明内容
本发明的目的在于克服现有技术中的不足,提供一种水泥砂浆浆液。使其具有坍落度小、抗离析、润滑性和泵送性能好,以及在流水中不分离等特点。本发明是通过以下技术方案实现的:采用聚胺类高分子聚合物作为抗离析、增加润滑性、提高可泵性;外掺剂采用萘系缩合物作为减水、提高粘聚性。
浆液配比(重量百分比)具体为:水泥6~30%,粉煤灰21~41%,膨润土4~6%,砂23~30%,水20~23%,聚胺类高分子聚合物0.55~0.75%,外掺剂0.25~0.35%,外掺剂为萘系缩合物。
本发明可达如下性能:坍落度(cm)4.0~5.0,泌水率(%)≤0.56,28天结实体收缩率×10-4≤1.8,3天抗压强度(MPa)≥0.20,1天或28天抗压强度(MPa)≥8.0,渗透系数≤1×10-7③,泵送表现-浆液呈膏状,循环泵送流畅,坍落度基本无损失。
注:①为基础加固及房屋纠偏的浆液结实体强度要求。
②、③为止水桩及用于紧急情况下抢险或堵漏的浆液结实体要求。
本发明具有实质性特点和显著进步,用本发明拌制的注浆浆液具有较高抗离析特征,同时具有保水、润滑性,提高泵送能力的作用,使高粘度、低坍落度的浆液能较好的适应机械要求。
具体实施方式
以下结合实施例对本发明进一步说明,在实施例中要求注浆材料满足工艺要求:
1、外掺剂
(1)可提高水泥浆液颗粒间的粘聚力,防止颗粒分离;
(2)可控制浆液中水分析出,有利于浆液的扩散;
(3)具有润滑作用,可提高浆液的泵送效率;
(4)浆液结实体收缩小,不影响浆体的强度。
2、注浆施工工艺的其他材料
水泥:32.5普通水泥
细砂:以100%地通过8号筛孔,小于50μm的细粒成分不得超过20%为宜。
粉煤灰:原状灰(统灰)。
膨润土:95%通过200目筛,膨胀率18~20ml/g。
实施一:
组分配方重量百分比为:水泥6%,粉煤灰41%,膨润土6%,砂26%,水20%,聚胺类高分子聚合物0.7%和外掺剂萘系缩合物0.3%。
实际效果:某厂房由于设计差错,致使投产后房屋沉降速率高达45mm/d,相对倾斜达0.024,严重影响安全和生产。应用本实施例,经及时纠偏注浆施工,厂房倾斜得到制止。
实施二:
组分配方重量百分比为:水泥8%,粉煤灰38%,膨润土4%,砂28%,水21%,聚胺类高分子聚合物0.7%和外掺剂萘系缩合物0.3%。
实际效果:某建筑围护原设计为钻孔灌注桩与深层搅拌桩组合,后改为在钻孔灌注桩10cm间隙中,应用本实施例,基坑开挖后无渗水现象。
实施三:
组分配方重量百分比为:水泥30%,粉煤灰21%,膨润土4%,砂23%,水21%,聚胺类高分子聚合物0.65%和外掺剂萘系缩合物0.35%。
实际效果:某河道防汛墙开裂,河水涌上岸堤,抢险方案:防汛墙河道内侧间距50cm处做一排间隔30cm的木桩,然后在防汛墙与木桩之间,应用本实施例,漏水现象得到遏止。

Claims (3)

1、一种水泥砂浆浆液,其特征在于,浆液配比(重量百分比)具体为:水泥6~30%,粉煤灰21~41%,膨润土4~6%,砂23~30%,水20~23%,聚胺类高分子聚合物0.55~0.75%,外掺剂0.25~0.35%,所述的外掺剂为萘系缩合物。
2、根据权利要求1所述的水泥砂浆浆液,其特征是,所述的砂为细砂,以100%地通过8号筛孔,小于50μm的细粒≤20%。
3、根据权利要求1所述的水泥砂浆浆液,其特征是,所述的膨润土,95%通过200目筛,膨胀率18~20ml/g。
CNB031418082A 2003-07-24 2003-07-24 水泥砂浆浆液 Expired - Fee Related CN1247480C (zh)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100402798C (zh) * 2004-12-29 2008-07-16 上海隧道工程股份有限公司 用于地铁盾构可硬化浆液同步注浆的方法
CN1319896C (zh) * 2004-12-29 2007-06-06 上海隧道工程股份有限公司 地铁盾构施工同步注浆可硬化浆液
CN100402454C (zh) * 2006-07-25 2008-07-16 上海飞步建材有限公司 一种稠化粉
CN102001847B (zh) * 2010-10-21 2013-01-16 山东大学 一种膏状速凝注浆材料及其制备方法
CN103205962A (zh) * 2013-04-27 2013-07-17 杨众 沉陷地坪注浆抬升的方法
CN103420661B (zh) * 2013-08-08 2016-06-08 曹三华 一种快速堵漏防水材料
CN115385596B (zh) * 2022-08-11 2023-05-16 山东大学 一种用于劈裂挤密注浆的防泌水注浆材料及其制备方法

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