CN103739245B - 一种防裂混凝土 - Google Patents
一种防裂混凝土 Download PDFInfo
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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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- 239000000835 fiber Substances 0.000 claims abstract description 31
- 239000004568 cement Substances 0.000 claims abstract description 8
- 239000010881 fly ash Substances 0.000 claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 8
- 239000004575 stone Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- -1 1050 parts Substances 0.000 claims description 6
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 6
- 238000007580 dry-mixing Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
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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
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。
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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 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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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CN103449747B (zh) * | 2013-07-05 | 2015-05-06 | 广东粤盛特种建材有限公司 | 一种多功能复合纤维防裂材料及其制配方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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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 |
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 |
Non-Patent Citations (1)
Title |
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纤维素纤维及混杂纤维混凝土的抗弯冲击性能;邓宗才等;《北京工业大学学报》;20081130;第34卷(第11期);第1149-1153页 * |
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