Concrete Video: China Railway, Railway Construction Senior Personnel Adjustment!

The core skill of concrete state is to accurately identify whether the concrete meets the construction requirements (such as pumping, pouring and vibrating) through the detection and evaluation of "fluidity-cohesiveness-water retention".

2026-01-23 15:44:43

On January 21, the Intermediate People's Court of Urumqi, Xinjiang Uygur Autonomous Region, issued a notice on the bankruptcy and termination of Xinjiang Jinhe Concrete Co., Ltd.

2026-01-23 11:50:08

11. Key rules for maintenance Within 12h after pouring, the concrete must be covered and kept wet. The ordinary concrete shall be cured for ≥ 7 days, and the concrete mixed with mineral admixtures or high-grade concrete shall be cured for ≥ 14 days. If the curing is not in place, cracks will easily occur.

2026-01-22 15:51:12

1. Rules of core composition The basic composition of concrete is "cementitious material + aggregate + water + admixture". Cementitious material (cement + admixture) determines the strength basis. The proportion of aggregate exceeds 70%, which affects the volume stability. The performance of admixture is precisely regulated.

2026-01-21 15:53:05

After the concrete is hardened and dried, rainwater and underground water from the outside penetrate into the hardened body through the pores, so that the aqueous solution of hydraulic colloid or inorganic salts flows out, and then reacts with carbon dioxide in the air to form sulfur substances, which are attached to the surface of the hardened body after the water evaporates. This phenomenon is called Baihua, also known as "wall cancer".

2026-01-16 16:16:48

Recently, according to the information of the National Bankruptcy Reorganization Case Information Network, on January 8, 2026, Hefei Railway Transport Court decided to accept the bankruptcy reorganization case of Anhui Tongji Construction Group Co., Ltd. on the basis of the application of Anhui Tongji Construction Group Co., Ltd.

2026-01-16 16:14:41

Foam concrete is a kind of high-quality building material, which has the advantages of high strength, low water absorption and low difficulty in construction. However, before construction, attention should be paid to many aspects, such as equipment testing, cleaning the pouring position and preparing sufficient water, in order to ensure the smooth progress of construction.

2026-01-15 16:29:36

Ultra-high performance concrete (UHPC) is a new cement-based composite material with ultra-high strength, ultra-high toughness and ultra-high durability. In the national standard "Ultra-high Performance Concrete" (GB/T 31387 — 2025), UHPC is officially defined as cement and mineral admixtures as cementitious materials. The fiber toughened ultra-high strength concrete is produced by matching aggregate, additive, high strength fine steel fiber and/or nonmetal fiber, water and the like.

2026-01-14 17:29:34

1. Heat storage method and comprehensive heat storage method (the most commonly used and economical method) Thermal storage method and comprehensive thermal storage method are commonly used in concrete construction in winter. By taking measures such as artificial heat preservation and utilization of concrete hydration heat, the temperature environment around concrete is maintained, and the growth rate of concrete strength is basically the same as that under normal temperature construction conditions.

2026-01-13 17:33:33

1. Surface repair Including compaction and leveling, epoxy adhesive coating, waterproof sheet pasting, etc. Smearing is suitable for shallow, watertight/movable cracks; patching (geomembrane, etc.) is suitable for seepage prevention of large area of water leakage or deformation joints. 2. Local repair method

2026-01-12 17:15:36

1. Cracks caused by load Cracks can be divided into direct stress cracks and secondary stress cracks, which often occur in the tensile zone, shear zone or severe vibration part

2026-01-09 15:17:26

Recently, according to relevant information, five more concrete companies have been filed for bankruptcy, involving Hunan, Hubei, Henan and other provinces.

2026-01-09 11:13:18

On January 8, SASAC issued an announcement on the appointment and removal of 14 leaders from 11 central enterprises.

2026-01-09 10:08:38

Some experts have pointed out that the concrete industry is essentially a "fresh industry". Why do you say that?

2026-01-08 16:57:42

For concrete friends, concrete is a common building material. Concrete is a mixture of Portland cement, stone aggregate and steel skeleton. It is indispensable on the construction site. How long is the service life of concrete?

2026-01-07 17:29:28

Recently, the First Intermediate People's Court of Beijing issued a notice declaring the bankruptcy of Beijing Xiangjia Concrete Co., Ltd.

2026-01-06 17:35:47

The strength grade of concrete is usually expressed by "C" plus a number, and the unit of value is MPa. For example, C30 means that the compressive strength of concrete after 28 days of curing under standard conditions is 30 MPa.

2026-01-06 16:53:34

First, use sandpaper or angle grinder to grind the bubble part, and grind the concrete surface around the bubble, so that the bubble is initially improved. After polishing, clean dust and sundries on the surface.

2026-01-05 15:50:50

In December 2025, the western construction units of CSCEC signed a total of 9.5119 million square meters of large projects, a significant increase of 184% compared with 3.3491 million square meters in November, as follows:

2026-01-04 16:36:45

In order to further enhance the overall competitiveness of China's concrete industry, China Concrete Network and China Cement Network jointly held the "Top 100 Enterprises in the Concrete Industry 2025" event, and will hold a grand award ceremony at the "15th China Cement Industry Summit".

2025-12-30 17:17:30

On December 30, 2025, China Concrete Network showed that the market price of C30 concrete in popular cities in Guizhou Province was between 150-260 yuan per square meter, and the price of each city was relatively stable.

2025-12-30 17:15:57

Recently, the SASAC of the State Council announced the appointment and removal of 15 leaders of 10 central enterprises. Among them, Wu Bingqi is the party secretary and chairman of Overseas Chinese Town Group Co., Ltd.

2025-12-26 17:11:58

On December 26, 2025, China Concrete Network showed that the market price of C30 concrete in popular cities in Guangxi was between 250-300 yuan per square meter.

2025-12-26 17:10:00

52 A. M. on December 23, at the gate of a construction site on Anyuan Road, Jing'an District, Shanghai, a concrete mixer truck accidentally crashed into a wall while reversing, and two pedestrians were immediately hit by the fallen wall.

2025-12-25 16:20:46

On December 25, 2025, China Concrete Network showed that the market price of C30 concrete in popular cities in Henan Province was between 240-310 yuan per square meter, and the price of each city rose slightly.

2025-12-25 16:19:11

On December 24, 2025, China Concrete Network showed that the market price of C30 concrete in popular cities in Hebei Province was between 230-275 yuan per square meter, and the price of each city was relatively stable.

2025-12-24 16:32:06

On December 22, the list of top 10 plants and stations for concrete output of China Construction Western Construction in December was released.

2025-12-24 15:06:40

On December 18, Suzhou Housing and Construction Bureau of Jiangsu Province issued the Circular on Dynamic Verification of Ready-mixed Concrete Production Enterprises in the Second Half of 2025. A total of 57 ready-mixed concrete enterprises in the city were sampled, and 488 problems were found. Some enterprises had problems such as imperfect management system and weak control of raw material sources. Among them, 6 enterprises were found to be poor:

2025-12-23 15:30:23

On December 17, Shudao Investment Group Co., Ltd. held a cadre meeting, at which it was announced that Zhang Sheng was appointed Secretary and Chairman of the Party Committee of Shudao Group.

2025-12-19 14:47:13

Recently, with the approval of the Central Committee of the Communist Party of China, the State Supervisory Commission of the Central Discipline Commission examined and investigated the serious violation of discipline and law by Fei Dongbin, an alternate member of the 20th Central Committee, a former member of the Party Group of the Ministry of Transport, and a former secretary and director of the Party Group of the State Railway Administration.

2025-12-18 16:02:07

According to the quotation of China Concrete Network, the market price of C30 concrete in popular cities of Hubei Province on December 18, 2025 is between 245-295 yuan per square meter, and the price of each city is relatively stable. Details are as follows:

2025-12-18 15:57:35

On December 10, the new material R & D pilot environmental protection production base built and operated by Guangzhou City Investment Group was officially put into operation in Guangzhou.

2025-12-17 16:41:52

According to China Concrete Network, on December 17, 2025, the market price of C30 concrete in popular cities in Anhui Province was between 260-320 yuan per square meter, and the price of each city was relatively stable.

2025-12-17 16:40:23

Recently, the People's Court of Dantu District, Zhenjiang City, Jiangsu Province announced that it had decided to terminate the reorganization procedure of Jiangsu Minghe Concrete Co., Ltd. and declared the company bankrupt;

2025-12-16 17:41:21

According to the quotation of China Concrete Network, the market price of C30 concrete in Shanghai's popular cities on December 16, 2025 is between 295-305 yuan per square meter, and the regional prices are relatively stable.

2025-12-16 17:39:46

Recently, China Construction Western Construction No.1 Company successfully signed a contract for the construction, operation and maintenance of concrete mixing station and concrete supply project of Fujian Xiapu Nuclear Power Project PWR Phase I Project, with a contracted volume of 1.893 million square meters (exclusive supply), creating a record high in the number of contracted parties for a single domestic project of China Construction Western Construction.

2025-12-15 17:27:42

According to China Concrete Network, on December 15, 2025, the market price of C30 concrete in popular cities in Zhejiang Province was between 280-320 yuan per square meter, with the price of C30 concrete in Lishui, Ningbo, Taizhou and Wenzhou rising slightly.

2025-12-15 17:25:59

According to the information of an asset trading platform, a batch of structures and other auxiliary facilities, machinery and equipment, and electronic equipment under the name of Tianjin Jidong Haifeng Concrete Co., Ltd. will be auctioned from 10:00 on December 29, 2025, with a starting price of 198887000 yuan, which is located in Tianjin Binhai New Area-S206 (Bangang Highway).

2025-12-12 16:13:41

According to China Concrete Network, on December 12, 2025, the market price of C30 concrete in popular cities in Hunan Province was between 240-290 yuan per square meter, and the price of C30 concrete in each city rose, with the highest increase of 20 yuan per ton in Chenzhou and Hengyang.

2025-12-12 16:11:39

China Concrete Network shows that on December 11, 2025, the market price of C30 concrete in popular cities of Guangdong Province is between 240-285 yuan per square meter, and the price of C30 concrete in some areas changes slightly: Zhanjiang: 265-275 yuan/m3 Shenzhen: about 275 yuan/square meter

2025-12-11 16:05:38

On the evening of December 10, Jinyu Group issued a notice on the appointment of deputy general manager of the company.

2025-12-11 16:02:57

China Concrete Network shows that the price range of C30 concrete market in popular cities of Shandong Province on December 10, 2025 is between 240-285 yuan per square meter, as follows: Jining and Heze: 240-255 yuan/m3 Liaocheng and Dezhou: about 260 yuan/m3

2025-12-10 16:10:36

Recently, seven concrete companies have been established in Shanghai, Sichuan, Hebei and other places, with registered capital ranging from 1 million yuan to 30 million yuan, as follows: December 9 Shanghai Shenghao Concrete Co., Ltd. was established The registered capital is 1 million yuan.

2025-12-10 16:08:37

According to the quotation of China Concrete Network, the market price of C30 concrete in popular cities of Yunnan Province on December 9, 2025 is between 240-340 yuan per square meter, and the price of C30 concrete in some areas changes slightly. Details are as follows: Kunming, Qujing, Zhaotong: 240-250 yuan/m3

2025-12-09 17:29:19

A few days ago, a netizen left a message through the network platform to complain that the illegal "black" concrete mixing station in Nanbu County of Sichuan Province was flooded, hoping that the relevant departments would take measures to completely dismantle the illegal mixing station.

2025-12-09 15:07:30

China Concrete Network Quotation shows that on December 8, 2025, the price range of C30 concrete market in popular cities in Sichuan Province is between 280-425 yuan per square meter: Chengdu: 280-300 yuan/m3 Mianyang and Deyang: 325-345 yuan/m3 Guangyuan, Ya'an and Leshan: 350-370 yuan/m3

2025-12-08 14:39:28

According to a property rights trading platform, Yibin Xudong Commodity Concrete Co., Ltd. determined the reorganization investors by public bidding, with a starting price of 23.2985 million yuan.

2025-12-05 16:04:48

According to the quotation of China Concrete Network, the price range of C30 concrete market in popular cities of Jiangxi Province on December 5, 2025 is between 260-290 yuan per square meter, as follows: Nanchang, Jiujiang, Ji'an, Ganzhou: 260-270 yuan/m3

2025-12-05 16:00:12

According to the quotation of China Concrete Network, on December 4, 2025, the price range of C30 concrete market in Chongqing's popular areas is between 205-220 yuan per square meter, as follows:

2025-12-04 16:37:52

On November 29, the production and marketing docking ceremony of Sichuan Yinfeng Cement Products Co., Ltd. was successfully held in Dechang County, Liangshan Yi Autonomous Prefecture, Sichuan Province.

2025-12-04 16:35:47