CN1044486A - 混凝土粘接剂 - Google Patents

混凝土粘接剂 Download PDF

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Publication number
CN1044486A
CN1044486A CN 90101516 CN90101516A CN1044486A CN 1044486 A CN1044486 A CN 1044486A CN 90101516 CN90101516 CN 90101516 CN 90101516 A CN90101516 A CN 90101516A CN 1044486 A CN1044486 A CN 1044486A
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concrete
slag
caking agent
adhesive
ground
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李本茂
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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
    • C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26—Silicates of the alkali metals

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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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

一种粘接剂，特别是混凝土粘接剂，该粘接剂是由水玻璃、高炉矿渣粉，转炉钢渣粉、生石灰粉、325号以上之水泥、细骨料按1∶1.2—1.5∶0.07—0.15∶0.03—0.05∶0.01—0.02∶2.0—2.2的重量比配合搅拌而成，使其沉入度为5-7厘米填塞于已清理洁净，湿润的混凝土裂缝中，经过捣实、压紧，潮湿养护14天，即可将构件连接牢固，或用来修补混凝土构件，其强度不低于250kg/cm2，本发明取材容易，效果可靠，成本便宜，操作方便，实用性强。

Description

本发明涉及一种粘接剂，特别是混凝土粘接剂。
在处理混凝土构件断裂的问题上，一般都是采用高分子粘接剂，例如环氧树脂、酚醛树脂等热塑性树脂粘接剂，以粘接混凝土构件;这些粘接剂，粘接力强，强度高，但是存在着稳定性差，容易受温度影响的弱点，如处在寒冷环境和暴露在高温状态时，容易变脆和塑化，粘接性能明显降低，而且其粘接工艺复杂，原料价格昂贵，有的还带有毒性、成本高，所以很难满足使用要求。
本发明的目的是要提供一种改进的混凝土粘接剂，该粘接剂所用材料，价格便宜，操作方便，并且一旦粘接后不再受温度影响。
本发明是这样实现的：将水玻璃、水淬高炉矿渣粉、转炉钢渣粉、生石灰粉、325号以上水泥细骨料，顺序按1∶1.2-1.5∶0.07-0.15∶0.03-0.05∶0.01-0.02∶2.0-2.2重量比配合，拌合成胶砂，使其沉入度为5-7厘米，填塞入已清理洁净的混凝土缝隙中捣实压紧，经过湿润养护14天即可达到不低于250级的混凝土强度。
以下结合实施例详细说明本发明的具体内容及其粘接方法。
粘接剂由下述原材料所构成，其规格如下：
1、水玻璃，为灰绿色或黄灰色粘稠液体，无杂物，模数（SiO2/NaO）：2.2-2.8，比重：1.4-1.45。
2、水淬粒化高炉矿渣粉：通过孔径0.15mm（1600孔/cm2）筛，筛余量不大于5%。
3、转炉钢渣粉：通过孔径0.15mm（1600孔/cm2）筛，筛余量不大于5%。
4、生石灰粉：通过孔径0.15mm（1600孔/cm2）筛，筛余量不大于1%。
5、符合国家标准的水泥：不低于325号。
6、河砂：泥污含量不大于1.5%，其级配符合下表要求：
筛孔（mm）        2.5        1.25        0.63        0.315        0.16
累计筛余（%）        0-10        20-50        35-65        70-95        95-100
将以上材料，水玻璃：高炉矿渣粉，转炉钢渣粉，生石灰粉，水泥，河砂，顺序按照1∶1.3∶0.07∶0.03∶0.01∶2.0的重量配合比，拌合均匀，使其沉入度为5-7厘米，即可直接用来粘接或修复混凝土构件。
施工时，要求环境温度在10℃以上，该粘接剂灌注在灰尘、松动部分完全清除掉的并用水湿润过的粘接处所，必要时支立模板，经过捣实，压紧，在潮湿环境下，养护14天即可达到250号以上强度，并与周围混凝土粘接牢固。
根据冶金部第三冶金建筑研究所试验结果证明，这种水玻璃胶砂物理性能如下：
1、抗压强度：250Kg/cm2。
2、抗拉强度：劈拉强度：20Kg/cm2。
轴拉强度：17Kg/cm2。
3、抗折强度：35Kg/cm2。
4、抗剪强度：40Kg/cm2。
5、干缩率：0.3-0.8%
6、静弹性模量：1.06×10Kg/cm2。
7、抗冻性：M50-M100均合格。
经将该粘接剂填塞于中间凿开宽约40mm的裂缝的空心板中自然养护13-20天进行荷载试验，其结果如下：
标准楼板        粘接楼板1号        粘接楼板2号
出现裂缝的荷载        568        571        571
Kg/cm2
破坏荷载Kg/cm2913 1637 1933
挠度（cm）        1.002        3.930        1.850
说明粘接后之楼板，除挠度较大外，其抗弯强度，完全可以满足要求，因此本粘接剂可以用在承重或不承重其抗压强度不大于250级混凝土构件的粘接或修补工程中。
本发明材料来源容易，有些只是工业废料加工制成，所以成本低，采用无机材料，没有毒性，施工时操作方便，容易掌握，又由于粘接剂中包括有气硬性和水硬性两种材料，所以对养护要求不严，而随着时间的延长，其粘接强度越高，实用范围广。

Claims (1)

  1. 一种粘接剂，特别是混凝土粘接剂，由水玻璃和水泥混合而成，其特征在于在混合物中还掺有高炉矿渣粉、转炉钢渣粉、生石灰粉、细骨料，而水玻璃、高炉矿渣粉、转炉钢渣粉、生石灰粉、325号以上之水泥，细骨料顺序按1∶1.2--1.5∶0.07--0.15∶0.03--0.05∶0.01--0.02∶2.0-2.2的重量比配合搅拌而成。
CN 90101516 1990-03-22 1990-03-22 混凝土粘接剂 Pending CN1044486A (zh)

Priority Applications (1)

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CN 90101516 CN1044486A (zh) 1990-03-22 1990-03-22 混凝土粘接剂

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103992747A (zh) * 2013-02-17 2014-08-20 中国科学院上海硅酸盐研究所 一种热电器件用耐热复合粘结剂及其制备方法
CN105731980A (zh) * 2016-03-03 2016-07-06 哈尔滨龙澳消防技术开发有限公司 混凝土制品粘接剂及粘接方法
CN107418452A (zh) * 2017-09-15 2017-12-01 镇江市龙门石刻艺术工程有限公司 一种幕墙胶黏剂

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103992747A (zh) * 2013-02-17 2014-08-20 中国科学院上海硅酸盐研究所 一种热电器件用耐热复合粘结剂及其制备方法
CN103992747B (zh) * 2013-02-17 2016-05-18 中国科学院上海硅酸盐研究所 一种热电器件用耐热复合粘结剂及其制备方法
CN105731980A (zh) * 2016-03-03 2016-07-06 哈尔滨龙澳消防技术开发有限公司 混凝土制品粘接剂及粘接方法
CN107418452A (zh) * 2017-09-15 2017-12-01 镇江市龙门石刻艺术工程有限公司 一种幕墙胶黏剂

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