CN117263621A - 一种机制砂配制钢纤维高强高性能混凝土 - Google Patents
一种机制砂配制钢纤维高强高性能混凝土 Download PDFInfo
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Abstract
本发明公开了一种机制砂配制钢纤维高强高性能混凝土,由如下份数的材料制备而成:水泥100‑900份、石子10‑400份、增强剂10‑210份、骨料30‑320份、钢纤维100‑450份、青石棉10‑60份、有机纤维40‑320份、植物纤维50‑365份、水100‑1500份以及氢氧化钠20‑35份。本申请通过在混凝土的材料中添加有钢纤维、青石棉、有机纤维与植物纤维,在对混凝土搅拌制备过程中提升混凝土的强度,并增强混凝土的性能,制备工艺简单,高强度、高弹性模量,高性能纤维具有耐高温性,具有高温下尺寸稳定,高性能纤维的另一优点是密度低,有利于制品的轻量化,有机高性能纤维加工简便,容易成型,生产成本低,更好的适用在高强度的建筑应用场景内,带来更好的使用场景。
Description
技术领域
本发明涉及混凝土制备技术领域,尤其是一种机制砂配制钢纤维高强高性能混凝土。
背景技术
混凝土是指由胶凝材料将集料胶结成整体的工程复合材料的统称,通常讲的混凝土一词是指用水泥作胶凝材料,砂、石作集料;与水按一定比例配合,经搅拌而得的水泥混凝土,也称普通混凝土,它广泛应用于土木工程,目前建筑工程中,通常混凝土的内部结构都是采用骨料与水泥构成,结构内的强度较低,结构出现裂缝的情况也较为普遍。
发明内容
本发明的目的是根据上述现有技术的不足,提供了一种机制砂配制钢纤维高强高性能混凝土,通过有机纤维和植物纤维的组合提高混凝土的韧性,避免其裂缝产生,同时通过氢氧化钠的加入,不但本身提高混凝土的性能,还能通过提高植物纤维的性能以进一步提升混凝土质量。
本发明目的实现由以下技术方案完成:
一种机制砂配制钢纤维高强高性能混凝土,其特征在于:由如下份数的材料制备而成:水泥100-900份、石子10-400份、增强剂10-210份、骨料30-320份、钢纤维100-450份、青石棉10-60份、有机纤维40-320份、植物纤维50-365份、水100-1500份以及氢氧化钠20-35份。
具体由如下份数的材料制备而成:水泥350份、石子210份、增强剂90份、骨料220份、钢纤维330份、青石棉11份、有机纤维80份、植物纤维190份、水1100份、氢氧化钠30份。
所述水泥为硅酸盐水泥,增强剂内部的成分包括有三乙醇胺、丙三醇、二甘醇、无水亚硫酸钠与水,其中三乙醇胺与丙三醇的比例为1∶3,二甘醇与无水亚硫酸钠的比例为2∶1。
所述骨料为细骨料,骨料的粒径为0.15-4mm,细度模数为2-3,钢纤维的长度为10-50mm,直径为0.2-0.5mm,钢纤维的横截面为弯月形,钢纤维内部的钢材质为普碳钢。
所述有机纤维包括涤纶、腈纶、锦纶、丙纶与高性能纤维其中的一种及其一种以上,其中高性能纤维内部成分包括有聚对苯并咪唑纤维与聚苯撑吡啶并二咪唑纤维其中的一种,有机纤维的制备方法采用干法纺丝进行制备。
所述植物纤维包括有种子纤维、叶片纤维、韧皮纤维与果实纤维其中的一种及其一种以上。
所述植物纤维的提取步骤为:
A1、将包含植物纤维的植物清洗干净,并进行加热升温,将水分烘干;
A2、将滤纸放入罐子中,在罐子内放入烘干后的植物,将罐子放入加热箱内进行加热处理,加热方式采用水蒸汽加热;
A3、等待植物纤维完全溶解后,将滤纸取出晾干后提取得到植物纤维。
本发明的优点是:通过在混凝土的材料中添加有钢纤维、青石棉、有机纤维与植物纤维,在对混凝土搅拌制备过程中提升混凝土的强度,并增强混凝土的性能,带来更好的应用场景;通过在混凝土的材料中添加氢氧化钠,不但通过氢氧化钠本体提升混凝土的性能,该氢氧化钠还能对植物纤维进行润胀,改善植物纤维的柔软性、挠曲性和可塑性,进一步提升植物纤维给混凝土带来的性能提升。
实施方式
以下通过实施例对本发明特征及其它相关特征作进一步详细说明,以便于同行业技术人员的理解:
实施例:本实施例中的机制砂配制钢纤维高强高性能混凝土,由如下份数的材料制备而成:水泥100-900份、石子10-400份、增强剂10-210份、骨料30-320份、钢纤维100-450份、青石棉10-60份、有机纤维40-320份、植物纤维50-365份、水100-1500份、氢氧化钠20-35份。
具体由如下份数的材料制备而成:水泥350份、石子210份、增强剂90份、骨料220份、钢纤维330份、青石棉11份、有机纤维80份、植物纤维190份与水1100份、氢氧化钠30份。
在本实施例中,在混凝土内添加由钢纤维、有机纤维和植物纤维组成的多种纤维,以提高混凝土的抗拉强度、抗冲击性、抗裂性和抗渗性等性能。在此之中,虽然钢纤维作为工业常用的添加纤维,但是其成本较高且易造成混凝土二次龟裂;对于此,本实施例通过减少钢纤维的掺入量并通过有机纤维和植物纤维的组合进行弥补。对于有机纤维和植物纤维而言,两者成本相对钢纤维而言较低,同时也具备提升混凝土性能的效果,但提升效果略逊于钢纤维。本实施例通过在混凝土中掺入氢氧化钠,该氢氧化钠一方面通过其与硅酸盐水泥的作用机理有效提高硅酸盐水泥的性能,另一方面该氢氧化钠可对植物纤维起到润胀作用,即在一定程度上使植物纤维发生体积膨胀,从而使其能与混凝土连接更为紧固,同时与另两种纤维形成更为紧密的缠绕体系。
在本实施例中,水泥为硅酸盐水泥,增强剂内部的成分包括有三乙醇胺、丙三醇、二甘醇、无水亚硫酸钠与水,其中三乙醇胺与丙三醇的比例为1∶3,二甘醇与无水亚硫酸钠的比例为2∶1;
在本实施例中,骨料为细骨料,骨料的粒径为0.15-4mm,细度模数为2-3,钢纤维的长度为10-50mm,直径为0.2-0.5mm,钢纤维的横截面为弯月形,钢纤维内部的钢材质为普碳钢。
在本实施例中,青石棉内部的主要成分为钠、铁、硅、氧与氢,有机纤维包括涤纶、腈纶、锦纶、丙纶与高性能纤维其中的一种及其一种以上,高性能纤维内部成分包括有聚对苯并咪唑纤维与聚苯撑吡啶并二咪唑纤维其中的一种,有机纤维的制备方法采用干法纺丝进行制备;
高性能纤维一般指强度大于17.6cN/dtex,弹性模量在440cN/dtex以上的纤维,高性能纤维是纤维科学和工程界开发的一批具有高强度、高模量、耐高温性的新一代合成纤维,高性能纤维具有普通纤维没有的特殊性能,高性能纤维具有普通纤维没有的特殊性能,是一种优质的工程材料,其特性为如下:极高的机械性能,高强度、高弹性模量,高性能纤维具有耐高温性,具有高温下尺寸稳定,高性能纤维的另一优点是密度低,有利于制品的轻量化,有机高性能纤维加工简便,容易成型,有机和无机高性能纤维耐腐蚀。
在本实施例中,植物纤维包括有种子纤维、叶片纤维、韧皮纤维与果实纤维其中的一种及其一种以上。
在本实施例中,植物纤维的提取步骤为:
A1、将包含植物纤维的植物清洗干净,并进行加热升温,将水分烘干;
A2、将滤纸放入罐子中,在罐子内放入烘干后的植物,将罐子放入加热箱内进行加热处理,加热方式采用水蒸汽加热;
A3、等待植物纤维完全溶解后,将滤纸取出晾干后提取得到植物纤维。
本实施例中的高强高性能混凝土的制备步骤包括:
S1、准备合适份数的原材料;
S2、将材料放入混凝土搅拌机中进行搅拌,混凝土搅拌机的转速为15r/min,搅拌的时间为1h;
S3、在搅拌的同时不断对搅拌机中添加水分,让混凝土的粘稠度保持在合适的范围内;
S4、在搅拌的同时不断的在搅拌机中添加增强剂;
S5、搅拌完成后,对混凝土的性能进行检测。
检测的参数包括有混凝土的强度检测、混凝土砂浆的含水量检测与混凝土砂浆的塌落度检测。
对比例1:本对比例中的混凝土由硅酸盐水泥350份、石子210份、增强剂90份、骨料220份、钢纤维330份、青石棉11份、有机纤维80份、植物纤维190份、水1100份、氢氧化钠30份构成。
对比例2:本对比例中的混凝土由硅酸盐水泥450份、石子190份、增强剂120份、骨料220份、钢纤维120份、青石棉15份、有机纤维60份、植物纤维420份、水900份、氢氧化钠25份构成。
对比例3:本对比例中的混凝土由硅酸盐水泥109份、石子190份、增强剂120份、骨料300份、钢纤维410份、青石棉16份、有机纤维100份、植物纤维90份、水900份、氢氧化钠25份构成。
采用本实施例中的制备方法对上述三个对比例的组分进行制备并进行试验检测,通过对比可以了解到,对比例1的组分为优选,具体如下:
下表为不同实施例中制备出的混凝土参数表
强度检测:等待制备出的混凝土凝固后,采用超声波检测仪进行对凝固后的混凝土进行检测,记录检测得出的数值。
含水量检测:采用称重法进行检测,将实施例中制得混凝土砂浆预先的放在天平上进行称重,随后将混凝土砂浆放置在烘干机内进行烘干处理,等待内部水份完全的蒸发干后,再次对混凝土砂浆进行重量的称量,通过计算得出混凝土砂浆的含水量。
虽然以上实施例已经对本发明目的的构思和实施例做了详细说明,但本领域普通技术人员可以认识到,在没有脱离权利要求限定范围的前提条件下,仍然可以对本发明作出各种改进和变换,故在此不一一赘述。
Claims (7)
1.一种机制砂配制钢纤维高强高性能混凝土,其特征在于:由如下份数的材料制备而成:水泥100-900份、石子10-400份、增强剂10-210份、骨料30-320份、钢纤维100-450份、青石棉10-60份、有机纤维40-320份、植物纤维50-365份、水100-1500份以及氢氧化钠20-35份。
2.根据权利要求1所述的一种机制砂配制钢纤维高强高性能混凝土,其特征在于:具体由如下份数的材料制备而成:水泥350份、石子210份、增强剂90份、骨料220份、钢纤维330份、青石棉11份、有机纤维80份、植物纤维190份、水1100份、氢氧化钠30份。
3.根据权利要求1所述的一种机制砂配制钢纤维高强高性能混凝土,其特征在于:所述水泥为硅酸盐水泥,增强剂内部的成分包括有三乙醇胺、丙三醇、二甘醇、无水亚硫酸钠与水,其中三乙醇胺与丙三醇的比例为1∶3,二甘醇与无水亚硫酸钠的比例为2∶1。
4.根据权利要求1所述的一种机制砂配制钢纤维高强高性能混凝土,其特征在于:所述骨料为细骨料,骨料的粒径为0.15-4mm,细度模数为2-3,钢纤维的长度为10-50mm,直径为0.2-0.5mm,钢纤维的横截面为弯月形,钢纤维内部的钢材质为普碳钢。
5.根据权利要求1所述的一种机制砂配制钢纤维高强高性能混凝土,其特征在于:所述有机纤维包括涤纶、腈纶、锦纶、丙纶与高性能纤维其中的一种及其一种以上,其中高性能纤维内部成分包括有聚对苯并咪唑纤维与聚苯撑吡啶并二咪唑纤维其中的一种,有机纤维的制备方法采用干法纺丝进行制备。
6.根据权利要求1所述的一种机制砂配制钢纤维高强高性能混凝土,其特征在于:所述植物纤维包括有种子纤维、叶片纤维、韧皮纤维与果实纤维其中的一种及其一种以上。
7.根据权利要求6所述的一种机制砂配制钢纤维高强高性能混凝土,其特征在于:所述植物纤维的提取步骤为:
A1、将包含植物纤维的植物清洗干净,并进行加热升温,将水分烘干;
A2、将滤纸放入罐子中,在罐子内放入烘干后的植物,将罐子放入加热箱内进行加热处理,加热方式采用水蒸汽加热;
A3、等待植物纤维完全溶解后,将滤纸取出晾干后提取得到植物纤维。
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