文档介绍：混凝土裂缝治理措施
【摘要】随着我国大规模的经济建设,建筑结构发展十分迅速,建筑材料,设计和科学理论研究都获得了长足发展,使城乡建设面貌焕然一新。混凝土具有原料丰富,价格低廉,生产工艺简单的特点,因而使用量越来越大;同时混凝土还具有抗压强度高,耐久性好,强度等级高等优点,使其在土木工程,造船业,机械工业,海洋的开发,地热工程等工程中广泛应用。在建筑工程中混凝土构件容易产生裂缝,对工程的安全性和耐久性造成很大的威胁。但混凝土裂缝在工程中又是不可避免的现象,针对施工中普遍存在的裂缝问题,本文从设计、材料选用、施工等几个方面分析裂缝产生的原因并提出防治措施,希望从多方面加以控制和治理,以期减少因裂缝整治带来的损失。
【关键词】混凝土裂缝控制治理
Abstract:Along with our country economic construction on a large scale, building structure development is very rapid, building materials, design and scientific research has achieved great development, make urban and rural construction appearance to take on an altogether new aspect.. Concrete with abundant raw materials, low price, simple production process characteristics, thus increasing consumption; At the same time ,concrete also has a pressive strength, good durability, strength grade etc., so that in the civil engineering, shipbuilding industry, machinery industry, marine development, Geothermal Engineering and other widely used in engineering. In the construction of concrete crack, the engineering safety and durability have caused a great threat. But the concrete crack in engineering is inevitable phenomenon, according to construction generally exist in the crack problem, this article from the design, material selection, construction and other aspects the paper analyzes the causes of cracks and puts forward prevention measures, hope from many aspects of control and management, in order to reduce the losses caused by the cracks treatment.
Keywords:Concrete;Crack;Control;Government
引言
混凝土能提高建筑工程质量,大大缩短建设工期,提高建设速度,节省工程量。还能节省施工用地、减少资源浪费、改善劳动条件、减少环境污染,降低综合造价。但是,在大量的工程建设中混凝土的裂缝是不可避免的,其微观裂缝是本身物理力学性质决定的,但它的有害程度是可以控制的,有害程度的标准是根据使用条件决定的。目前世界各国的规定不完全一致,但大致相同。如从结构耐久性要求、承载力要求及正常使用要求,。近年来,。当结构所处的环境正常,保护层厚度满足设计要求,无侵蚀介质,;;。沿钢筋的顺筋裂缝有害程度高,必须处理。 
近年来预应力混凝土应用范围逐渐推广到更多的结构领域,如大跨超长、超厚及超静定框架结构,其混凝土强度等级必须提高至C50。在采用泵送条件下,其收缩与水化热大大增加,约束应力裂缝很难避免,张拉前开裂,张拉后又不闭合,裂缝控制的难度更加困难。预