Construction preparation → concrete mixing → concrete transportation → concrete entry acceptance → concrete pouring and vibration → concrete curing → concrete quality acceptance.
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precast-tech
precast-tech
Concrete Weekly Report: The overall pattern of weak and stable operation and regional differentiation in the central and southern markets
Guangdong and Guangxi: This week, the overall concrete market in Guangdong continued to operate in a weak pattern of stable prices, weak demand, and hindered cost transmission.
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Durability damage assessment and repair reinforcement of ordinary concrete structures
The ordinary concrete structure discussed in this article refers to the concrete structure of general industrial and civil buildings.
This type of building structure has a large quantity and a wide range, but its durability often fails to meet the design and specification requirements due to factors such as low concrete strength values in design, lax control of concrete water cement ratio and protective layer thickness, insufficient construction and maintenance measures, and inadequate maintenance measures during use.
During the design service life, it exhibits durability damage such as steel corrosion, which affects the structural function.
With the end of large-scale new construction activities, it is expected that the assessment and repair of durability damage to concrete structures will be a noteworthy task in engineering renewal and renovation.
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Concrete Purchase Price Index (MPPI) for June 2026
In June 2026, the average price of C30 concrete nationwide was 267.
83 yuan/ton, a decrease of 5.
83 yuan or 2.
13% compared to May’s 273.
65 yuan/ton, indicating an overall weak market operation.
This month, the trend of upstream cement and gravel raw materials has diverged, with cement supply shrinking and strong willingness of enterprises to stabilize prices.
However, the demand for gravel is weak and prices continue to fall, resulting in limited support for overall raw material costs.
At the same time, the national concrete production capacity utilization rate continues to decline, coupled with multiple negative factors impacting terminal demand, resulting in weak market transactions and overall downward pressure on prices.
On the demand side, the suspension of the middle and high school entrance exams, coupled with high temperatures and rainy weather in East and South China, have hindered construction progress.
In addition, the slow recovery of industry funds, insufficient new construction projects, and the continuous suppression of engineering demand due to adjustments in the real estate industry have further dragged down concrete terminal consumption.
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【 Concrete Enjoys the Future 】 Product Division – Pre mixed Concrete High quality Concrete Products
The three types of concrete cube plastic test molds and test block sizes are relatively close, and the test mold sizes meet the requirements of the national JG237-2008 concrete test mold standard.
There are no abnormalities in the size and flatness of the test blocks.
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Literature Review | Identification of Non Value Added (NVA) Activities on Precast Concrete Installation Construction Sites and
The concept of lean production originated from the Toyota Production System and was created by engineer Naiichi Nono.
Lean theory divides all activities in production systems into two categories: transformation activities and flow activities.
Transforming activities into products or processes adds value, while mobile activities (i.
e.
NVA activities) consume time, costs, and resources without adding value.
Previous studies have shown that lean concepts can effectively improve environmental benefits, such as reducing inventory waste, equipment waste, and material waste (Luo et al.
, 2005).
In precast concrete factories, the implicit carbon of precast concrete columns can be reduced by 8% (Wu and Low, 2011a).
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Literature Express | Mechanism of Chloride Ion Transport in Low Carbon Marine Concrete: Alkali Activated Slag System Containing High
The carbon emissions from cement production account for 5% -8% of the global total emissions, and the corrosion of steel bars caused by chloride ion erosion in the marine environment is the core issue of the durability of concrete structures.
Alkali activated materials (AAM) using industrial solid waste as precursors are an important way to achieve low-carbon cement production.
Granulated blast furnace slag (GGBS) is currently the most widely studied alkali activated system, and limestone powder (LS) can partially replace GGBS as an auxiliary cementitious material.
However, the chloride ion transport mechanism and microstructural evolution of the AAS-LS composite system in different exposed areas of the ocean are still unclear.
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Literature Express | Study on Microscopic Damage of Low Recycled Aggregate Low Carbon Concrete Based on In Situ CT and Interface Transition
Against the backdrop of rapid urbanization and industrialization, the demand for concrete in China continues to grow, and the carbon emissions from ordinary cement production are severe.
The large-scale storage of phosphogypsum poses environmental risks.
Industrial solid wastes such as phosphogypsum, slag, and fly ash can be used as auxiliary cementitious materials to replace some cement, and recycled aggregates can replace natural aggregates to reduce resource consumption.
However, the micro damage mechanism of low-carbon concrete still lacks in-depth research, and the combination of CT and DVC technology provides a new approach to solve this problem.
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Literature Express | Intelligent Multi Objective Optimization of 3D Printed Low Carbon Concrete for Multi Scene Requirements
3D printed concrete faces challenges such as material proportioning, rheological properties, and difficulty in coordinating printing parameters.
Traditional trial and error designs are unable to cope with complex nonlinear relationships, resulting in unstable quality, high costs, and carbon emissions amplification.
The combination of machine learning and multi-objective optimization provides a new approach to solving this problem.
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Appreciation of Concrete Literature Mechanism Diagram (13)
The mechanism diagram explains the most complex scientific story with the lowest communication cost.
It is not only an illustration, but also a core tool for efficiently conveying complex scientific problems to readers.
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