CN106045397A - 抗压抗折橡胶混凝土制品 - Google Patents

抗压抗折橡胶混凝土制品 Download PDF

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CN106045397A
CN106045397A CN201610374409.9A CN201610374409A CN106045397A CN 106045397 A CN106045397 A CN 106045397A CN 201610374409 A CN201610374409 A CN 201610374409A CN 106045397 A CN106045397 A CN 106045397A
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杨蝉聪
詹忠
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SICHUAN GOLDMILL ENVIRONMENTAL PROTECTION NEW MATERIALS Co Ltd
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Abstract

本发明公开了一种抗压抗折橡胶混凝土制品,属于建筑材料领域,制备方法如下:将180重量份40目废橡胶粉与20重量份40目硅藻土通过搅拌器搅拌5分钟,其次通过碾挤机使得硅藻土嵌入废橡胶粉中制成橡胶水泥基粉,用制成的橡胶水泥基粉与水泥、砂、粗集料、水、外加剂混合制得橡胶混凝土制品,所制得的橡胶混凝土制品相对于未加橡胶水泥基粉的混凝土制品的抗压、抗折强度均有一定的提升。

Description

抗压抗折橡胶混凝土制品
本申请是原申请“一种用于水泥基材料的废旧橡胶粉处理方法”的分案申请,原申请申请日:2014年2月14日,申请号:2014100517361。
技术领域
本发明涉及建材领域,具体来讲是一种抗压抗折橡胶混凝土制品。
背景技术
近30年来,美国、加拿大、日本、韩国等发达国家已考虑将粉碎的废旧轮胎橡胶颗粒应用于水泥基材料中,亚利桑那州大学的Zhu教授(现在是天津大学教授)通过研究发现,拌合760cm3的水泥基材料至少可以利用5个废旧轮胎所产生的橡胶颗粒,并于2006年8月在天津市武清区武香路二百户东口桥的修建过程中,世界上首次使用橡胶集料混凝土进行了桥面铺装。在迄今7年的使用中,观察未发现铺装层产生裂纹以及开裂现象。针对观测结果,分析应用于桥面铺装的橡胶集料混凝土的工程性和经济性。结果表明:桥面铺装是橡胶集料混凝土有很好适用性和优势的应用之一,其耐久性得到初步验证,值得进一步研究推广,因此橡胶水泥基材料可以在很大程度上缓解废旧轮胎堆积所造成的环境污染,具有很大的环保、社会效益。
不少的研究表明,废橡胶颗粒应用于水泥基材料后,水泥基材料的弹性增加可以改善它的抗冲击、抗冻、抗裂、吸声、保温、隔热等性能,同时还具有防滑、消声、防盐雾腐蚀,防地基翻碱等性能,但是由于废橡胶粉的憎水性,与水泥基材料的相容性差,易造成分层,使其强度大幅下降,较大地限制了其应用。
通过橡胶颗粒表面改性可以减缓水泥混凝土强度的降低,目前应用于水泥基材料的橡胶颗粒表面改性方法主要有超声波水洗、臭氧或三氧化硫活化、NaOH溶液清洗等手段使橡胶粉表面结合上亲水的极性基团,如羧基、磺酸基等。公开号为CN101638465A的中国发明专利,公开了一种用于水泥基材料的橡胶颗粒表面改性方法,具体技术方案是:先将丙烯酸配制成乙醇溶液,再将平均分子量为1000的聚乙二醇加入所述的丙烯酸-乙醇溶液中,撒在橡胶颗粒表面,再将作为催化剂过硫酸钾配制成水溶液,撒在橡胶颗粒表面。在搅拌机中充分搅拌数分钟,然后在80℃~90℃进行加热反应1小时,得到改性橡胶粉。虽然该专利技术比较方便解决了废橡胶颗粒表面改性,但是实际施工中由于废橡胶粉密度远远小于水泥浆密度,使得橡胶粉容易漂浮于混凝土表面,造成搅拌分层,相应的橡胶混凝土制品的抗压、抗折强度低。
发明内容
本发明的目的在于:针对上述存在的问题,提供一种抗压抗折橡胶混凝土制品。
本发明采用的技术方案如下:
本发明公开了一种抗压抗折橡胶混凝土制品,制备方法如下:将400份水泥,574.6份砂,1172份粗集料,172份水,67.6份橡胶粉混合物和3.2份外加剂原料混合制成,其中所述橡胶粉混合物是将180 份 40目废橡胶粉与20份40目硅藻土通过搅拌器搅拌5分钟,制备成混合初料,混合初料通过碾挤机使得硅藻土嵌入废橡胶粉中制成。
综上所述,由于采用了上述技术方案,本发明的有益效果是:通过物理方法让无机惰性粉末材料嵌入橡胶粉,能够显著增加橡胶水泥基粉与混凝土粘合强度,同时增加橡胶水泥基粉密度,便于橡胶水泥基粉在混凝土中均匀分布,所制成的混凝土制品的抗折抗压性能得到了较大程度的提高。
附图说明
图1为本发明的无机惰性粉末材料与橡胶粉共嵌单体的显微结构;
图2为本发明的橡胶水泥基粉的显微结构;
图3为本发明的橡胶水泥基粉和普通橡胶粉亲水性对比,图中左样杯中为橡胶水泥基粉(60目),右样杯中为普通橡胶粉(60目);
图4为本发明实施例1橡胶混凝土的抗折强度测试结果;
图5为本发明实施例1橡胶混凝土的抗压强度测试结果。
具体实施方式
下面结合附图,对本发明作详细的说明。
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
具体实施例1:橡胶混凝土的制品
将18000g 40目废橡胶粉(90%)与2000g 40目硅藻土(10%)通过搅拌器搅拌5分钟,制备成混合初料;混合初料通过碾挤机制成橡胶水泥基粉。按照JGJ55-2000和JTG F30-2003试验方法制备橡胶混凝土模块。(见表1)
表1 混凝土各项材料用量
实施例1橡胶混凝土的抗折、抗压强度测试结果见图4和图5。
从对比的抗折、抗压强度测试结果可以看到,在橡胶水泥基粉掺加比例为5%时,抗折强度高于未加橡胶水泥基粉的水泥混凝土;在橡胶水泥基粉掺加比例为5%,10%和15%时,抗压强度高于未加橡胶水泥基粉的水泥混凝土。这说明橡胶微粒与水泥浆之间的粘结很好,当橡胶水泥构成的混凝土受力时,橡胶微粒受力时的各向异性分解了力;当橡胶水泥基粉掺加比例较大时,柔性支撑点增多,强度降低。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。。

Claims (1)

1.一种抗压抗折橡胶混凝土制品,其特征在于将180重量份 40目废橡胶粉与20重量份40目硅藻土通过搅拌器搅拌5分钟,其次通过碾挤机使得硅藻土嵌入废橡胶粉中制成橡胶水泥基粉,用制成的橡胶水泥基粉按照如下原料重量份比例制成混凝土模块制品:
制品编号 水泥 粗集料 橡胶水泥基粉 外加剂 替代砂比例 1 400 636 1172 138 223 3.2 5% 2 400 603 1172 140 44.6 3.2 10% 3 400 574 1172 172 67.6 3.2 15%
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CN201610373527.8A Pending CN106045358A (zh) 2014-02-14 2014-02-14 一种增强废旧橡胶颗粒与水泥相容性粘接性的方法
CN201610377264.8A Pending CN106007435A (zh) 2014-02-14 2014-02-14 无机惰性粉末在混凝土中的应用
CN201610373529.7A Pending CN106045356A (zh) 2014-02-14 2014-02-14 高强度抗折水泥浆石块制品的制备方法
CN201610374408.4A Pending CN106007437A (zh) 2014-02-14 2014-02-14 一种橡胶水泥基粉
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CN201610377264.8A Pending CN106007435A (zh) 2014-02-14 2014-02-14 无机惰性粉末在混凝土中的应用
CN201610373529.7A Pending CN106045356A (zh) 2014-02-14 2014-02-14 高强度抗折水泥浆石块制品的制备方法
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CN106746940A (zh) * 2016-11-10 2017-05-31 无锡市明盛强力风机有限公司 一种废旧轮胎颗粒改性水泥的方法

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CN104788053B (zh) * 2015-03-27 2017-06-23 山东科技大学 一种制备橡胶颗粒混凝土的实验方法
CN105753415B (zh) * 2016-05-21 2018-10-26 夏百庆 一种利用废弃橡胶、骨粉制备水泥砂浆的方法
CN106082742A (zh) * 2016-06-16 2016-11-09 四川金摩尔环保新材料有限责任公司 一种水泥基粉及其在水泥混凝土的应用及其在公路建设上的应用
CN106238456A (zh) * 2016-09-21 2016-12-21 成都创慧科达科技有限公司 一种修复土壤的微生物复合菌基质及其用途
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