Precast News From China
(1) The GB/T 50107-2010 “Concrete Strength Testing Standard” defines concrete strength as the mechanical properties of concrete, which characterize its ability to resist external forces.
The concrete strength referred to in this standard refers to the compressive strength of concrete cubes.
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On September 10th, the “Guidelines for Concrete Modular Building Technology in Zhejiang Province” (hereinafter referred to as the “Guidelines”) were officially released and implemented.
The “Guidelines” were organized and compiled by the Department of Housing and Urban Rural Development of Zhejiang Province, edited by Zhejiang University Architectural Design and Research Institute Co.
, Ltd.
, China Construction Hailong Technology Co.
, Ltd.
, and Zhejiang University of Technology Engineering Design Group Co.
, Ltd.
, with the participation of units such as Zhonghai Construction Co.
, Ltd.
and China Construction International Engineering Co.
, Ltd.
It is the first technical guideline for concrete modular buildings in Zhejiang Province.
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The impact of admixtures on concrete should also be considered.
Salted water reducers can react chemically with hard gypsum in cement, causing false setting and pipe blockage.
Moreover, the amount added can cause concrete segregation and bleeding.
Even when antifreeze is used at high temperatures, it can cause false condensation and blockage of pipes.
So when using additives, it is important to carefully read the instructions, applicable temperature, conditions, and objects, and strictly control the dosage ratio, otherwise it may have counterproductive effects.
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From September 18th to 20th, 2026, the China International Concrete Expo will be grandly held in Zone D of the Guangzhou China Import and Export Fair Exhibition Hall.
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Nat.
Commun.
: Climate information driven corrosion modeling re examines the durability of low-carbon concrete.
According to the Notice of the Ministry of Housing and Urban Rural Development on Issuing the Compilation of Engineering Construction Standards and Related Work Plans for 2024 (Jian Biao Han [2024] No.
41), our department organized China Academy of Building Research Co.
, Ltd.
and other units to revise and form the national standard “Concrete Quality Control Standards (Revised Draft for Comments)” (see attachment).
We are now soliciting opinions from the public.
Relevant units and the public can provide feedback through the following channels and methods:.
During the research process of Century Architecture Network in recent years, a seemingly contradictory phenomenon often appeared: upstream cement companies concentrated on issuing price increase letters, and factory prices continued to rise, but downstream commercial concrete market prices remained stagnant, and even saw raw material prices rise while concrete prices continued to decline.
This deviation in upstream and downstream prices is not simply a result of delayed cost transmission, but rather the fundamental differences in market structure, supply and demand patterns, business models, and funding rules between the cement and concrete industries, combined with weak demand for terminal engineering.
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In recent days, cement factories in many places in Jiangsu and Shanxi have begun to tentatively raise prices.
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On the last day of August, Cement Network released the monthly operational data of concrete nationwide.
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The water cement ratio and slump of concrete are common problems encountered in construction.
Many people are not very clear about the relationship between the two, thinking that a higher water cement ratio means a higher slump, and a higher slump means a higher water cement ratio.
However, this is not the case.
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