2024-08-16

Q: C55 concrete, all test block inspection reports are qualified, but the rebound tester inspection results show that we have taken 12 sets of data, and the strength is only around C45. Moreover, the carbonation depth is calculated as zero. The concrete pouring has been completed for more than two months. May I ask what happened?A: The inconsistency between the concrete test block and rebound results can be roughly divided into two reasons:1. Did the construction personnel add water to the concr

 

2024-07-25

In the scorching summer, the high temperature and high humidity environment pose significant challenges to the construction and maintenance of concrete. As an important material in construction projects, the quality of concrete directly affects the safety and durability of the entire project. Freeman will provide you with a detailed analysis of the curing strategy for summer concrete to help you ensure worry free project quality.Strictly control the construction environmentFirstly, in the high t

 

2024-07-19

Under the long-term influence of natural and usage environments, the function of concrete will inevitably weaken. Therefore, the reinforcement of concrete will become an important task. Let's learn some knowledge about concrete reinforcement together.Concrete reinforcement methodThe common method of indirect reinforcement1. Pre stressing reinforcement method: This method can reduce the stress level of the reinforced components, not only improving the reinforcement effect, but also significan

 

2024-06-27

Concrete is a common material in the construction process, and it needs to reach a certain strength before it can be used after construction. So, how long does it take for the concrete strength to reach 75%? What are the quality requirements for concrete pouring?How long does it take for concrete strength to reach 75%It takes about a week to achieve this strength. Concrete only needs to be constructed according to the specified requirements and maintained after construction. Basically, after thr

 

2024-06-18

Concrete is a commonly used building material, but the improvement of its durability has always been a focus of attention. Improving the durability of concrete can extend the service life of buildings, so how to improve the durability of concrete.Selecting high-quality raw materialsChoosing high-quality raw materials is the first step in improving the durability of concrete, and the quality of cement directly affects the strength and durability of concrete. Therefore, reliable quality cement sho

 

2024-05-28

Composition of concreteConcrete is mainly composed of six materials:cementwaterCoarse aggregate (mainly stones)Fine aggregate (mainly sand)Mineral admixtures (mainly fly ash or other admixtures)Admixtures (such as expansion agents, water reducing agents, retarders, etc.)The principle of concrete:Cement and water form a cement slurry, which wraps around the surface of all aggregates and fills the voids in the aggregates;Before the concrete hardens, the cement slurry acts as a lubricant, imparting

 

2024-05-23

As a specialized truck for transporting concrete, the daily maintenance of the mixer truck is very important. If the maintenance and upkeep of the mixer truck are not in place, it will affect its performance and lifespan. Below, the editor will share with you some tips for maintaining the mixer truck in Lianhui Building Materials.Daily maintenance1. Cleaning the concrete mixer truck: After each use of the concrete mixer truck, the vehicle body and mixing tank should be cleaned in a timely manner

 

2024-05-06

Concrete, as an important material in the field of modern architecture, its fundamental knowledge is crucial for personnel engaged in related work. I believe that everyone has gained a simple understanding of concrete foundation knowledge from the previous article Concrete Foundation Knowledge, Scratch from scratch! In this article, we will continue to delve deeper into concrete foundation knowledge!Why is medium sand preferred for pumping concrete?Answer: Sand is divided into coarse sand (3.1-3

 

2024-04-23

Concrete, as an important material in the field of modern architecture, its fundamental knowledge is crucial for personnel engaged in related work. Through the introduction of this article, I believe everyone can have a more comprehensive and in-depth understanding of concrete, laying a solid foundation for future learning and practice.What is pre mixed concrete?Answer: Pre mixed concrete is a concrete mixture that measures and mixes components such as cement, water, sand, gravel, admixtures, an

 

2024-04-17

Weathering mechanism sandWeathering sand generally refers to the natural crushing and formation of sand under natural conditions such as solar radiation, atmosphere, water, and biological effects. This type of weathered sand is relatively weak, requires a large amount of water, and has poor adhesion, making it unsuitable for the production of concrete. This is also one of the reasons why desert sand cannot be used for construction.Clay mineral mechanism sandClay minerals mainly refer to silicate

 

2024-03-29

On March 28th, the county held a grand mobilization conference for green, low-carbon, and high-quality development and the Project Breakthrough Year. Fuerman has been awarded the title of Technology Innovation Demonstration Enterprise due to its strong technological innovation capabilities and firm commitment to green development. This honor is not only a recognition of the company's technological innovation, but also an expectation and encouragement for its future development.As a leading b

 

2024-03-27

The causes of bubble formation1. The unreasonable proportion of concrete results in high viscosity and difficult discharge of bubbles due to the use of many cementitious materials. Adding fly ash or mineral powder can be used to solve this problem or increase the water consumption.2. The problem with cement itself is that grinding aids are added to cement during grinding, and some grinding aids have many bubbles.3. The concrete vibration is uneven and the vibration time is not enough. During the

 

2024-03-22

Introduction:In spring, there is a large temperature difference between day and night, with variable temperatures and dry weather. Strong winds and high temperatures promote increased water loss and plastic shrinkage of fresh concrete. Based on the characteristics of spring construction, corresponding technical measures should be taken to ensure the quality of concrete. The construction unit should do the following:1. Vibration methodDuring the construction process, the concrete should be thorou

 

2024-03-15

In the field of underground engineering, waterproofing has always been a top priority in construction. Due to its unique geographical location and complex construction environment, underground spaces have extremely high requirements for waterproofing performance.Fuerman concrete structures are self waterproof, perfectly integrating waterproofing with building structures. They not only effectively prevent water infiltration, but also ensure the stability and safety of the building structure. Make

 

2024-02-28

Compaction requirements for concreteLayering during concrete pouring process. Appropriate changes can be made based on the weather conditions at that time, generally not exceeding 30cm.When using an immersion vibrator to vibrate concrete, the movement distance should not exceed 3.75 times its vibration radius, that is, the movement distance of 75 vibrators should not exceed 3.75 times x 7.5=28cm, and the movement distance of 50 vibrators should not exceed 3.75 times x 5.0=18cm; When vibrating co

 

2024-02-02

Farewell to Mu'er, with fireworks every yearWinter is coming to an end, spring can be expectedThe prelude to the Chinese New Year and the return journey of thousands of miles for reunion during the Chinese New YearEvery little year in the world, everything we ask for is as we wishXiaonian has arrived, and the spring flavor is gradually becoming strongerLet's embrace the arrival of the new year togetherIn the new year, start a new chapter and embark on a new journeyMay your heart be direc

 

2024-01-23

Flooding refers to the phenomenon of floating slurry caused by bleeding during the period from pouring to the beginning of setting of the pouring material. Bleeding refers to the phenomenon where solid particles sink, water rises, and the castable undergoes settlement and contraction, leading to the precipitation of water on the surface. Float refers to the soft layer material that floats on the surface of the casting material caused by cement bleeding.What is the effect of bleeding?A small amou