摘要
近年来,在多方面利好因素的影响下,使得我国综合国力得到了显著的提升,从而为各个领域的发展壮大带来了良好的机遇,推动了建筑工程行业的快速发展。在建筑工程施工过程中,往往需要使用到大量的混凝土材料,混凝土其实质是一种非均匀质复合型材料,在硬化的过程中通常会出现物理化学反应,因为水泥浆液,粗骨料弹性模量存在差异性,所以会导致发生不同的收缩情况,如果混凝土硬化的过程中,所形成的拉应力超出浆液自身抗拉能力的极限的时候,那么就会引发混凝土结构裂缝的情况。一旦建筑工程结构出现裂缝的问题,不仅会损害到建筑的整体美观性,并且也会威胁到建筑工程结构质量。在进行混凝土材料配置的过程中,适当的添加附加剂能够有效的控制混凝土结构发生收缩裂缝的问题。现如今,专业人士对于粉煤灰、矿渣粉对混凝土早期开裂和收缩性能的研究较为关注,所获得的研究结论存在一定的差异性。这篇文章主要针对矿物掺合料对混凝土早期收缩以及开裂性能的影响展开全面深入的研究分析,希望能够对我国建筑工程行业的稳定健康发展有所帮助。
In recent years,under the influence of many favorable factors,Chinese comprehensive national strength has been significantly improved,which has brought good opportunities for the development of various fields,and promoted the rapid development of construction engineering industry.In the process of construction engineering construction,a large number of concrete materials are often used.The essence of concrete is a kind of heterogeneous composite material.In the process of hardening,physical and chemical reactions usually occur.Because of the difference of elastic modulus of cement slurry and coarse aggregate,different shrinkage will occur.If the concrete is hardened,the formation of tensile stress exceeds the limit of the tensile capacity of the grout itself,it will lead to concrete structure cracks.Cracks will not only damage the overall construction quality,but also damage the construction quality.In the process of concrete material allocation,the appropriate addition of additives can effectively control the shrinkage crack of concrete structure.Nowadays,professionals pay more attention to the research of fly ash and slag powder on the early cracking and shrinkage performance of concrete and the research conclusions are different.This paper mainly focuses on the influence of mineral admixtures on the early shrinkage and cracking performance of concrete,hoping to help the stable and healthy development of Chinese construction industry.
作者
曹祥彬
CAO Xiangbin(Wenzhou Innovation New Materials Co.,Ltd.,Wenzhou,Zhejiang,325014,China)
关键词
矿物掺合料
混凝土
早期收缩
开裂性能
影响
mineral admixture
concrete
early shrinkage
cracking performance
influence
