On February 6th, the national cement market mainly fell, mainly concentrated in provinces such as Hunan, Sichuan, Hebei, and Shanxi.
.
precast-tech
precast-tech
Application and development of foam concrete in housing construction system (I)
With the continuous deepening of China’s energy-saving and low-carbon policies and the significant improvement of people’s quality of life, the energy consumption and carbon emissions in the construction industry are increasingly receiving high attention from the whole society.
As an important carrier of energy consumption, buildings’ energy conservation and emission reduction have become one of the key links in promoting the achievement of the national “dual carbon” goals.
The heat loss caused by building envelope structures (including roofs, exterior walls, doors and windows, floors, etc.
) is the main reason for the high energy consumption of buildings.
Therefore, improving the thermal performance of building envelope structures and developing efficient and energy-saving insulation systems have become one of the core topics in global building energy conservation research.
In this context, the research and application of high-performance building envelope insulation materials is regarded as an important technological path to achieve building energy efficiency goals.
.
How to proficiently master the mnemonic of concrete performance for concrete workers
Concrete, as the cornerstone of the construction industry, its performance and quality are directly related to the safety and durability of the project.
For every person engaged in concrete work, mastering the performance characteristics of concrete proficiently is the key to ensuring project quality.
Today, we will bring you a “Formula for Concrete Performance” to help you understand the core points of concrete more systematically and comprehensively.
.
Experimental study on the bonding behavior between GFRP steel bars and ordinary and high-strength geopolymer concrete
Cement based concrete is the most commonly used material in construction, but its production process emits a large amount of CO ₂, exacerbating global warming.
Geopolymer concrete (GPC) is made from industrial waste materials such as fly ash and slag, reducing carbon emissions by 80% and possessing advantages such as early strength, corrosion resistance, and low creep.
At the same time, fiber-reinforced polymer (FRP) bars (such as GFRP) have characteristics such as corrosion resistance, lightweight, and high strength, making them suitable for harsh environments.
Therefore, the combination of GFRP reinforcement and GPC is considered a sustainable and durable green building material.
.
The tax burden on the concrete industry has become heavier!
According to the Notice of the Ministry of Finance and the State Administration of Taxation on the Application of Low VAT Rates and Simplified VAT Collection Policies for Some Goods (Caishui [2009] No.
9):.
What grade of concrete is the best for self built houses in rural areas?
Considering the impact of concrete grade on the quality of self built houses, this judgment is very pragmatic.
The selection of concrete grade for rural self built houses should be based on the stress requirements of different parts.
I will give you a detailed explanation now.
.
New regulations from the Housing and Urban Rural Development Bureau! It is strictly prohibited to step on steel bars directly during
After the completion of the binding and installation process of the floor reinforcement, it is common to encounter situations on site where management personnel carry out inspection and acceptance work, and construction personnel frequently walk and directly step on the reinforcement during concrete pouring operations.
This behavior can easily cause the displacement of steel bars or cushion blocks, leading to quality problems such as excessive deviation in the thickness of the steel bar protective layer.
.
The influence of different silicate coatings on the durability of concrete: mechanism and significance | MDPI Buildings
Click on “MDPI Engineering Science” in the upper left corner to follow us and push you more latest research.
.
GB/T50784-2013 Basic principle of ultrasonic method for measuring internal defects in concrete. When there are defects inside the concrete
The defect free area in concrete allows sound waves to propagate in a straight line with the shortest distance traveled; When encountering defects such as holes, cracks, and loose layers, sound waves cannot directly pass through (defects are mostly gas/liquid media, with a large difference in acoustic impedance from concrete, which can cause reflection and refraction), and can only pass through the intact concrete around the defect, with the actual propagation path far greater than the geometric distance measured.
.
Local standard | | The local standard for engineering construction in Guangxi, “Construction Technology Regulations for Concrete
This website indicates the text and images of “Source: Guangxi Green Building Materials Information” LOGO、 The copyright of creativity and other content belongs to Guangxi Green Building Materials Information.
Any media, website or individual must indicate the source when reprinting or using it.
Violators will be held accountable by this website in accordance with the law.
.