Among the shrinkage types of steel mesh concrete in coal mines, plastic shrinkage and dry shrinkage are the main causes of concrete volume deformation.

　　當(dāng)水泥與水接觸時(shí)，混凝土橋梁裂縫是一個(gè)普遍的技術(shù)問題，而混凝土橋梁裂縫又是一個(gè)普遍的技術(shù)問題，通過現(xiàn)代混凝土強(qiáng)度理論對(duì)其進(jìn)行亞微觀研究。豐富的工程實(shí)踐經(jīng)驗(yàn)。

　　When cement contacts with water, the crack of concrete bridge is a common technical problem, and the crack of concrete bridge is a common technical problem. The sub-micro research is carried out through modern concrete strength theory. Rich engineering practice experience.

　　結(jié)果表明，混凝土結(jié)構(gòu)的裂縫是不可避免的，細(xì)裂縫的使用是無害的。在混凝土橋梁的設(shè)計(jì)計(jì)算理論中，允許構(gòu)件開裂，但裂縫寬度不能控制得太寬。

　　The results show that cracks in concrete structures are inevitable and the use of fine cracks is harmless. In the design and calculation theory of concrete bridges, cracks are allowed, but the width of cracks can not be controlled too wide.

　　還有一種方法可以修復(fù)和加強(qiáng)混凝土橋梁的裂縫。找出裂紋的真正原因后，采用正確合理的修復(fù)材料和方法。

　　There is another way to repair and strengthen cracks in concrete bridges. After finding out the real cause of the crack, the correct and reasonable repair materials and methods are adopted.

　　加強(qiáng)橋梁構(gòu)件，提高結(jié)構(gòu)性能，提高橋梁承載能力，延長(zhǎng)橋梁使用壽命，適應(yīng)現(xiàn)代交通運(yùn)輸?shù)囊蟆？梢钥闯觯O(shè)計(jì)裂縫、施工質(zhì)量差、監(jiān)理質(zhì)量差等因素都可能導(dǎo)致混凝土橋梁產(chǎn)生裂縫。

　　Strengthen the bridge components, improve the structural performance, improve the bearing capacity of the bridge, extend the service life of the bridge, and adapt to the requirements of modern transportation. It can be seen that design cracks, poor construction quality, poor supervision quality and other factors may lead to cracks in concrete bridges.

　　因此，嚴(yán)格按照有關(guān)標(biāo)準(zhǔn)和技術(shù)標(biāo)準(zhǔn)進(jìn)行設(shè)計(jì)、施工和監(jiān)理是保證結(jié)構(gòu)和耐久性的前提和基礎(chǔ)。

　　Therefore, design, construction and supervision in strict accordance with the relevant national standards and technical standards are the premise and foundation to ensure the safety and durability of structures.

　　在經(jīng)營(yíng)管理過程中，進(jìn)一步加強(qiáng)檢查管理，及時(shí)發(fā)現(xiàn)和處理問題也是非常重要的環(huán)節(jié)。鋼筋銹蝕引起的裂紋。由于混凝土質(zhì)量差或保護(hù)層厚度不足，混凝土保護(hù)層被二氧化碳碳化到鋼表面，降低了鋼筋周圍混凝土的堿度。

　　In the process of operation and management, it is also very important to further strengthen inspection and management, and to find and deal with problems in time. Cracks caused by corrosion of steel bars. Due to the poor quality of concrete or insufficient thickness of protective layer, the protective layer of concrete is carbonized by carbon dioxide to the steel surface, which reduces the alkalinity of concrete around steel bars.

　　或由于煤礦鋼網(wǎng)中氯離子的介入，導(dǎo)致鋼棒周圍氯離子含量較高，導(dǎo)致鋼棒表面氧化膜斷裂，鐵離子侵入鋼棒并凝固。土壤中的氧氣與水發(fā)生反應(yīng)而生銹。

　　Or because of the intervention of chloride ion in coal mine steel mesh, the chloride ion content around steel rod is higher, resulting in the rupture of oxide film on the surface of steel rod, and the iron ion intrudes into steel rod and solidifies. Oxygen in the soil reacts with water and rusts.

　　如果您有濟(jì)南鋼筋批發(fā)的需求，可以點(diǎn)擊我的官網(wǎng)進(jìn)行咨詢：http://www.angcao.cn/

　　If you have the wholesale demand of reinforcing steel bar in Jinan, you can click on my official website for consultation: http://www.angcao.cn/