亚洲高清无码视频,特级丰满少妇一级AAAA爱毛片,午夜福利一区二区三区,午夜福利电影在线观看

News & Events

Company news

Home > News & Events > Company news

National Quality Supervision and Inspection Center Innovating Detection Technology and Developing New Areas

Recent years, relying on continuous technological innovation and expansion of new fields, the quality inspection center has realized the continuous increase of engineering inspection performance and maintained a high growth rate for many years. Among them, some great innovative practices have been carried out in concrete testing, and many remarkable innovative achievements have been achieved, such as C100 super high performance steel fiber reinforced concrete testing, ultrasonic rebound comprehensive method of structural quality assessment, series of concrete mix design with stricter environmental grade, etc.

 

The C100 super high performance steel fiber concrete is used in the steel-concrete combination section of a municipal bridge in Hubei Province. The strength grade of concrete used in common construction is C40, and the strength grade of concrete used for piers and box girders of high-speed railway is C60. However, the C100 super high performance steel fiber concrete used in this project is not accepted by general testing companies because of its difficult technology. According to the technical requirements provided by customers, the quality inspection center has formulated a feasible testing scheme, such as the testing of expansion cracking inhibitor to limit expansion rate at higher temperature, and the testing of workability, strength, modulus of elasticity, durability and other items to ensure the accuracy and scientificity of the testing data.

 

The Quality Inspection Center also accepts commissions from Guiyang, Tianjin, Shanxi and other high-speed railway projects to conduct on-site quality assessment of large reinforced concrete structures (box girders, piers, retaining walls, etc.) with quality doubts from one party. The quality inspection center adopts the comprehensive method of ultrasonic rebound, which can detect the internal quality of reinforced concrete structure and ensure the reliability of the quality evaluation on site.

 

The following picture shows the inspectors inspecting the quality of about 900t box girders (32 m * long, 5.74 m * wide, 13.4 m * high, 3.0 m).

 

Picture 2 shows the inspectors inspecting the ground of a pier (20m * high, 20m * bottom, 5m * top, 3.5m):


The environmental grade of C20~C60 series concrete commissioned by a high-speed railway project in Ganning is T2, H2, L3, Y2 and D3. The quality inspection center fits in with the construction site. It has been repeatedly demonstrated from the aspects of mix design, testing and verification. Through the adaptability of admixtures, workability, strength, electric flux, frost resistance and air bubble space, the concrete mix design is carried out. The comprehensive analysis of distance coefficient and sulphate corrosion crystallization coefficient can solve the difficult problems in construction site and ensure the practicability of mix ratio.

   

Through the innovative practice of concrete testing mentioned above, the quality inspection center has effectively solved the difficulties of customer testing, and has won the unanimous praise of customers. It not only improves the technical level of concrete testing and testing, exercises the ability of testing personnel, but also enhances the influence and market share of quality inspection center in the field of Engineering testing.

 

 In order to achieve the goal of "leading in China and well-known in the world", the QC will continue to develop and innovate in the future. Innovation is the first productive force to be put into practice, and move forward in a timely manner!  (Xu Tongxin)

 

(R & D Park)No.70. Science Avenue, High-Tech Zone, Zhengzhou City, Henan Prov, China / (Industry Park)No.26. Huagong Road, High-Tech Zone, Zhengzhou City, Henan Prov, China

Telephone:+86 371 6785 2000

Email:info@zrw.cn

Fax:+86 371 6763 2895

wechat
国产熟睡乱子伦午夜视频在线 | 欧美性受XXXX白人性爽 | 羞羞视频最新地址发布页 | 91精品成人无码A片 美女黄视在线免费观看 | 91精品国产乱码A片 日本黑人乱偷人妻中文 | 免费人妻av无码专区久久 | 色婷婷无码人妻一三五区 | 无码精品秘 人口一区二区 91人妻人人做人碰人人爽 | 亚洲中文字幕在线无码 | 蜜桃狠狠色伊人亚洲综合 | 国产人妻无套一区二区普通话对白 | 激情综合五月丁香狠狠爱 | 国产一区二区三区视频 | 农村熟妇高潮精品A片 | 亚洲精品久久久久久久久久久 | 搡老妇女一区二区三区四区 | 无套内谢少妇毛片A片软件美国 | 国产午夜精品视频麻豆视频 | 广东BBW搡BBBB搡 | 一级A片粉嫩小槡BBBB | 3d动漫精品啪啪一区二区 | 久久久久久久久金莲tb | 国产午夜福利电影 | 久久午夜麻豆免费剧场 | av一本二本三本毛片 | AAAA,级毛片在线观看 | 台湾成人做爰A片 | 黄色视频在线播放网站 | 精品国产乱码久久久久电车痴汉久 | 国产 成年妇 视频下载 | 国产精品久久久久久一级毛片许晴 | 色情肉欲奶头无码A片 | 日韩欧美丝袜制服一区二区三区 | 国产激情偷乱视频一区二区三区 | 国产电影一区二区三区 | 一级黄色影片7777 | 久久精品国产AV周妍希 | 国产成人亚洲精品无码h在线 | 亚洲第一成人无码A片 | 成人AV动漫在线观看 | 白丝诱惑一区二区三区 |