CN103739245B - 一种防裂混凝土 - Google Patents

一种防裂混凝土 Download PDF

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CN103739245B
CN103739245B CN201310702374.3A CN201310702374A CN103739245B CN 103739245 B CN103739245 B CN 103739245B CN 201310702374 A CN201310702374 A CN 201310702374A CN 103739245 B CN103739245 B CN 103739245B
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concrete
cellulosic fibre
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parts
crack
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CN103739245A (zh
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唐萍
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Changchun Building Material Co Ltd Of Yatai Group
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Liuzhou Zhengling Group Co Ltd
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Abstract

本发明提供一种防裂混凝土,包括以下质量份数的各组分:水泥380-480份、砂400-500份、石子1020-1100份、粉煤灰50-60份、水160-200份、格雷斯纤维0.5-0.6份、纤维素纤维0.5-0.6份。本发明的混凝土中的格雷斯纤维、纤维素纤维均能起到很好的抗裂作用,经试验,两种纤维的添加比例为1:1时,抗裂效果最好。本发明的混凝土能有效防止因混凝土温度、干缩等非结构性原因造成的混凝土结构中的开裂现象。

Description

一种防裂混凝土
技术领域
本发明属于建筑材料领域,具体涉及一种防裂混凝土。
背景技术
混凝土是建筑施工中必不可少的重要材料,但因混凝土是种脆性材料,按常规组分和配比得到的混凝土很容易产生裂缝,对建筑工程、特别是大型水利枢纽工程的安全性、耐久性将产生很大的影响,且混凝土出现裂缝后,修复效果也很不理想。
发明内容
本发明提供了一种防裂混凝土,提高了混凝土的抗裂能力。
本发明提供一种防裂混凝土,包括以下质量份数的各组分:水泥380-480份、砂400-500份、石子1020-1100份、粉煤灰50-60份、水160-200份、格雷斯纤维0.5-0.6份、纤维素纤维0.5-0.6份。
优选地,包括以下质量份数的各组分:水泥420份、砂450份、石子1050份、粉煤灰55份、水180份、格雷斯纤维0.6份、纤维素纤维0.6份。
优选地,所述格雷斯纤维与纤维素纤维的质量比为1:1。
优选地,所述纤维素纤维的平均长度为2.1mm,标称直径为17-20μm。
本发明的混凝土中的格雷斯纤维、纤维素纤维均能起到很好的抗裂作用,经试验,两种纤维的添加比例为1:1时,抗裂效果最好。本发明的混凝土能有效防止因混凝土温度、干缩等非结构性原因造成的混凝土结构中的开裂现象。
具体实施方式
以下的实施例便于更好地理解本发明,但并不限定本发明。下述实施例中的实验方法,如无特殊说明,均为常规方法。
实施例1
本发明的防裂混凝土的制备方法如下:
将水泥420kg、砂450kg、石子1050kg、粉煤灰55kg干拌均匀,再加入格雷斯纤维0.6kg、纤维素纤维0.6kg进行搅拌,最后加入水180kg搅拌均匀,得到本发明的混凝土。
其中,纤维素纤维的平均长度为2.1mm,标称直径为18μm。
实施例2
本发明的防裂混凝土的制备方法如下:
将水泥380kg、砂400kg、石子1020kg、粉煤灰50kg干拌均匀,再加入格雷斯纤维0.5kg、纤维素纤维0.55kg进行搅拌,最后加入水160kg搅拌均匀,得到本发明的混凝土。
其中,纤维素纤维的平均长度为2.1mm,标称直径为17μm。
实施例3
本发明的防裂混凝土的制备方法如下:
将水泥480kg、砂500kg、石子1100kg、粉煤灰60kg干拌均匀,再加入格雷斯纤维0.55kg、纤维素纤维0.5kg进行搅拌,最后加入水200kg搅拌均匀,得到本发明的混凝土。
其中,纤维素纤维的平均长度为2.1mm,标称直径为20μm。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (2)

1.一种防裂混凝土,其特征在于:包括以下质量份数的各组分:水泥380-480份、砂400-500份、石子1020-1100份、粉煤灰50-60份、水160-200份、格雷斯纤维0.5-0.6份、纤维素纤维0.5-0.6份;所述格雷斯纤维与纤维素纤维的质量比为1:1;所述纤维素纤维的平均长度为2.1mm,标称直径为17-20μm。
2.根据权利要求1所述的防裂混凝土,其特征在于:包括以下质量份数的各组分:水泥420份、砂450份、石子1050份、粉煤灰55份、水180份、格雷斯纤维0.6份、纤维素纤维0.6份。
CN201310702374.3A 2013-12-19 2013-12-19 一种防裂混凝土 Expired - Fee Related CN103739245B (zh)

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CN105110710A (zh) * 2015-08-27 2015-12-02 广西路佳道桥勘察设计有限公司 一种高抗折的混凝土
CN105110711A (zh) * 2015-08-27 2015-12-02 广西路佳道桥勘察设计有限公司 一种高抗拉的混凝土

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CN101186471A (zh) * 2007-12-14 2008-05-28 中天建设集团有限公司 一种混凝土
CN101717230A (zh) * 2009-12-17 2010-06-02 湖北白莲河抽水蓄能有限公司 一种防裂混凝土
CN101898886A (zh) * 2010-07-23 2010-12-01 同济大学 一种用于保温系统的界面砂浆
CN102311246A (zh) * 2010-05-14 2012-01-11 上海罗洋新材料科技有限公司 一种抗裂混凝土
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CN101717230A (zh) * 2009-12-17 2010-06-02 湖北白莲河抽水蓄能有限公司 一种防裂混凝土
CN102311246A (zh) * 2010-05-14 2012-01-11 上海罗洋新材料科技有限公司 一种抗裂混凝土
CN101898886A (zh) * 2010-07-23 2010-12-01 同济大学 一种用于保温系统的界面砂浆
JP2012232861A (ja) * 2011-04-28 2012-11-29 Tokyu Construction Co Ltd 耐爆裂性高強度コンクリートと製造方法

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