The invention discloses a preparation method of a high-performance pre-stressed pipeline grouting agent. The preparation method of the high-performance pre-stressed pipeline grouting agent has the following specific steps: S1: weighing each component proportionally and reserving it; S2: adding mineral admixture into the mixer to mix for 5 to 10 minutes until mixing is even; S3: adding expansion agent and water reducing agent, retarder, defoamer and air-entraining agent into the mixer separately. A high performance pore grouting agent was obtained by stirring for 20 to 23 minutes. The invention has the characteristics of low water-binder ratio, high fluidity, early micro-expansion, high strength, non-stratification, non-segregation and bleeding, controllable setting time, etc. It greatly improves the working performance of the grouting agent in practical construction and the durability and reliability of the engineering application. By optimizing the types and proportions of various raw materials, the synergistic effect among the components, the grouting agent has the advantages of low water-binder ratio, high strength, non-segregation and bleeding, and Better cement adaptability, simple process, strong controllability, low cost, conducive to industrial promotion.
【技术实现步骤摘要】
一种高性能预应力管道压浆剂的制备方法
本专利技术涉及管道压浆剂
,具体为一种高性能预应力管道压浆剂的制备方法。
技术介绍
预应力混凝土自被发现到应用以来,一直备受关注,人们也不断的对其进行改良,使得预应力混凝土具有其他混凝土不可比拟的优势,预应力混凝土可以使混凝土减少裂缝甚至不出现裂缝,并且可以使梁整个截面受力,使钢材得到充分的利用。而预应力混凝土所具备的特性都是在预应力筋与梁体混凝土粘结良好的基础上。依据制作,设计和施工工艺的不同,预应力混凝土分为先张法和后张法两种。目前我国高速公路中的悬臂施工以及现场浇筑和逐跨施工都是以后张法为主。孔道压浆是后张法预应力施工的最后一个步骤,它不仅承担着连接预应力筋和梁体混凝土的作用,还能够有效保护预应力筋不受有害离子的腐蚀,因此,压浆材料的性能直接影响到预应力混凝土的耐久性及工作性能。目前,我国孔道压浆浆液得到的方法一是在纯水泥浆液中加入一定的减水剂,膨胀剂,缓凝剂等进行现场配制,实验环境及实验因素不确定,使得所得压浆浆体的质量得不到保证。二是通过搅拌站提供的预拌商品压浆料,这种虽然压浆效果较好,但是其成本较高。本专利技 ...
【技术保护点】
1.一种高性能预应力管道压浆剂的制备方法,其特征在于:该高性能预应力管道压浆剂的制备方法具体步骤如下:S1:按比例称取各组分,备用;S2:将矿物掺合料加入搅拌机中搅拌5‑10min至混合均匀;S3:将膨胀剂与减水剂,缓凝剂,消泡剂,引气剂分别加入搅拌机中搅拌20‑23min,即得到一种高性能孔道压浆剂。
【技术特征摘要】
1.一种高性能预应力管道压浆剂的制备方法,其特征在于:该高性能预应力管道压浆剂的制备方法具体步骤如下:S1:按比例称取各组分,备用;S2:将矿物掺合料加入搅拌机中搅拌5-10min至混合均匀;S3:将膨胀剂与减水剂,缓凝剂,消泡剂,引气剂分别加入搅拌机中搅拌20-23min,即得到一种高性能孔道压浆剂。2.根据权利要求1所述的一种高性能预应力管道压浆剂的制备方法,其特征在于:所述高性能预应力管道压浆剂的制备原料按重量份如下:矿物掺合料800-950份,聚羧酸高效减水剂25-35份,膨胀剂100-550份,缓凝剂9-15份,引气剂0.3-1份,消泡剂1-4份。3.根据权利要求2所述的一种高性能预应力管道压浆剂的制备方法,其特征在于:所述聚羧酸减水剂为聚羧酸减水型减水剂,聚羧酸保坍型减水剂,聚羧酸缓释型减水剂中的一种或多种。4.根据权利要求2所述的一种高性能预应力管道压浆剂的制备方法,其特征在于:所述...
【专利技术属性】
技术研发人员:张智达,王英维,周普玉,徐忠洲,李光,王丽秀,
申请(专利权)人:山西佳维新材料股份有限公司,
类型:发明
国别省市:山西,14
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