CN101391875A - 井筒滑模施工混凝土专用早强型外加剂 - Google Patents

井筒滑模施工混凝土专用早强型外加剂 Download PDF

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CN101391875A
CN101391875A CNA2008101953150A CN200810195315A CN101391875A CN 101391875 A CN101391875 A CN 101391875A CN A2008101953150 A CNA2008101953150 A CN A2008101953150A CN 200810195315 A CN200810195315 A CN 200810195315A CN 101391875 A CN101391875 A CN 101391875A
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Prior art keywords
concrete
construction
early strength
type additive
vitriol
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CN101391875B (zh
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朱宗君
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Huainan Shuntian Synthetic Material Co ltd
Meiya Updated High Tech Material Industry Co ltd
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ANHUI HUAIHE CHEMICAL INDUSTRY Co Ltd
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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
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • 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
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • C04B2103/302—Water reducers
    • 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
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00103—Self-compacting mixtures
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

本发明公开了一种井筒滑模施工混凝土专用早强型外加剂，由萘系高效减水剂、硫酸盐及硫酸铝、膨胀剂、粉煤灰组成。本发明配制的混凝土外加剂很好的解决了施工中遇到的问题，用于煤矿井筒施工，具有超早强、脱模速度快，自密实，减水率高，拌和的混凝土粘聚性好，低温条件下强度发展快且不影响后期强度发展等特点，能大大提高施工速度。

Description

井筒滑模施工混凝土专用早强型外加剂
技术领域：
本发明涉及混凝土自密实性超早强剂，具体的说是一种井筒滑模施工混凝土专用早强型外加剂。
背景技术：
煤矿井筒混凝土是一类特殊的混凝土，施工的环境恶劣，由于井壁冻结，环境温度基本上在0-10℃之间。在这种环境温度下混凝土正常凝结都存在问题，但施工要求混凝土尽可能的提前凝结。另外施工采用吊桶或淋灰管下料，要求混凝土的坍落度至少要大于160mm，这对混凝土的凝结时间及粘聚性提出了更高的要求，此外还有防水自密实的问题。以往施工采用普通抗冻早强剂混凝土脱模时间长，配制出的混凝土要么坍落度小不好施工，要么坍落度够但混凝土凝结时间拉的更长且混凝土容易离析。
发明内容：
为解决上述问题，本发明提供了一种井筒滑模施工混凝土专用早强型外加剂，是采用萘系高效减水剂、硫酸盐及硫酸铝盐早强剂、膨胀剂、粉煤灰生产的外加剂，具有自密实、超早强、脱模速度快、减水率高、低温条件下强度发展快等特点。
本发明采用的技术方案：
井筒滑模施工混凝土专用早强型外加剂，其特征在于：原料重量配比如下：
萘系高效减水剂             100
硫酸盐及硫酸铝             5-100
混凝土用膨胀剂             5-100
粉煤灰                     5-50
所述的硫酸盐是硫酸钙或硫酸纳，硫酸盐与硫酸铝的重量比例为1-2：1。
所述的井筒滑模施工混凝土专用早强型外加剂，其特征在于：原料重量配比如下：
萘系高效减水剂            100
硫酸盐及硫酸铝            20-50
膨胀剂                  40-80
粉煤灰                  20-40
所述的硫酸盐与硫酸铝的重量比例为3：2。
本发明的优点：
本发明配制的混凝土外加剂很好的解决了施工中遇到的问题，用于煤矿井筒施工，具有超早强、脱模速度快，自密实，减水率高，拌和的混凝土粘聚性好，低温条件下强度发展快且不影响后期强度发展等特点，能大大提高施工速度。
具体实施方式：
井筒滑模施工混凝土专用早强型外加剂，按以下原料重量份配制：
萘系高效减水剂                  100
硫酸钠及硫酸铝(重量比3：2)      20-50
膨胀剂                          40-80
粉煤灰                          20-40
性能对比(以C40混凝土为准)
 
掺量 脱模时间     密实度   28天抗压强度         减水率率???
普通外加剂       0.7～3％   ≥12小时     一般 ≥49MPa ≥10
本发明 1～3％ ≤8小时 好 ≥49MPa ≥18

Claims (2)

1、井筒滑模施工混凝土专用早强型外加剂，其特征在于：原料重量配比如下：
萘系高效减水剂              100
硫酸盐及硫酸铝              5-100
混凝土用膨胀剂              5-100
粉煤灰                      5-50
所述的硫酸盐是硫酸钙或硫酸纳，硫酸盐与硫酸铝的重量比例为1-2：1。
2、根据权利要求1所述的井筒滑模施工混凝土专用早强型外加剂，其特征在于：原料重量配比如下：
萘系高效减水剂             100
硫酸盐及硫酸铝             20-50
膨胀剂                     40-80
粉煤灰                     20-40
所述的硫酸盐与硫酸铝的重量比例为3：2。
CN2008101953150A 2008-10-30 2008-10-30 井筒滑模施工混凝土专用早强型外加剂 Active CN101391875B (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101973722A (zh) * 2010-09-15 2011-02-16 山西科腾环保科技有限公司 一种速凝剂及其制备方法
CN102173687A (zh) * 2011-02-25 2011-09-07 北京工业大学 一种抗硫酸盐侵蚀的混凝土外加剂及其制备方法
CN104386939A (zh) * 2014-09-15 2015-03-04 中国建筑材料科学研究总院 复合掺合料、复配方法及煤矿内层井壁混凝土的施工方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099089A (zh) * 1994-06-03 1995-02-22 北京市石景山区华泰化学品公司 无碱混凝土用早强减水剂

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101973722A (zh) * 2010-09-15 2011-02-16 山西科腾环保科技有限公司 一种速凝剂及其制备方法
CN101973722B (zh) * 2010-09-15 2012-10-31 山西科腾环保科技有限公司 一种速凝剂及其制备方法
CN102173687A (zh) * 2011-02-25 2011-09-07 北京工业大学 一种抗硫酸盐侵蚀的混凝土外加剂及其制备方法
CN102173687B (zh) * 2011-02-25 2012-07-11 北京工业大学 一种抗硫酸盐侵蚀的混凝土外加剂及其制备方法
CN104386939A (zh) * 2014-09-15 2015-03-04 中国建筑材料科学研究总院 复合掺合料、复配方法及煤矿内层井壁混凝土的施工方法
CN104386939B (zh) * 2014-09-15 2016-01-20 中国建筑材料科学研究总院 复合掺合料、复配方法及煤矿内层井壁混凝土的制备及施工方法

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Address after: 232046 cave West Road, Huainan, Anhui

Patentee after: MEIYA UPDATED HIGH-TECH MATERIAL INDUSTRY Co.,Ltd.

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Patentee after: HUAINAN SHUNTIAN SYNTHETIC MATERIAL CO.,LTD.

Address before: 232046 cave West Road, Huainan, Anhui

Patentee before: MEIYA UPDATED HIGH-TECH MATERIAL INDUSTRY Co.,Ltd.