寒区隧道混凝土性能研究  

Study on Concrete Performance of Tunnel in Cold Region

作　　者：王拓新 WANG Tuo-xin(Xi`an Polytechnic University,Xi'an Shaanxi 710000,China)

机构地区：[1]西安工程大学,陕西西安710000

出　　处：《粘接》2020年第7期122-126,共5页Adhesion

摘　　要：随着我国经济的快速发展,众多交通线路也在不断完善。由于我国纬度跨度较大存在大量气候严寒的区域,在我国青藏高原和东北北部地区进行寒区隧道的修建必不可少。在众多高纬度严寒地区,具有充足的地下水,修建隧道的过程中容易出现开裂、漏水等冻害。本试验根据我国工程抗冻、外加剂种类掺量等相关要求检验,确保寒区隧道施工技术满足工程需求,设计合理的初步配合比,确定原材料运输及施工过程中的保温防冻措施。通过试件的抗压检测实际强度,并合理评价工程中抗防冻技术。结果表明,通过有效的寒区隧道抗防冻施工技术,取得了较为优良的混凝土抗防冻效果,在保证工程质量的同时,对类似工程具有指导作用。with the rapid development of China’s economy, many traffic lines are constantly improving. Due to the large latitude span in China, there are a lot of cold regions with severe cold weather, so it is necessary to build tunnels in the cold regions in the Qinghai Tibet Plateau and the north of Northeast China. In many high latitude cold regions, there is sufficient ground water, which is easy to crack and leak during the process of tunnel construction.This test is conducted according to the relevant requirements of anti freezing and admixture type and quantity in China, to ensure that the construction technology of tunnel in cold area can meet the engineering requirements, design a reasonable preliminary mix proportion, and determine the insulation and anti freezing measures in the process of raw material transportation and construction. Through the compression test of the test piece, the actual strength is tested, and the anti freezing technology in the project is reasonably evaluated. The results show that through the effective anti freezing construction technology of tunnel in cold area, the better anti freezing effect of concrete is achieved, which can not only ensure the quality of the project, but also guide the similar projects.

关 键 词：寒区隧道 混凝土抗防冻 施工技术 

分 类 号：U451.2[建筑科学—桥梁与隧道工程]