Technique 1: Boost technological degree, maintain item quality, and enhance technological reserves:
According to the study, just a few manufacturers of polycarboxylic acid water reducer products in my nation are separately established, and a lot of other suppliers present innovation from university research establishments or research study institutes or directly introduce modern technology from various other companies to begin production. Because of the restricted technological toughness of the producers themselves, they do not have a deep understanding of the polycarboxylic acid water reducer technology they produce, and it is hard to adapt to different modifications in raw materials and processes, and there is no way to talk about the stability of product quality. As a result, it is advised that polycarboxylic acid water-reducing agent suppliers proactively accept colleges and study institutes to completely comprehend the different elements impacting the efficiency of polycarboxylic acid water-reducing agent products, change the synthesis process specifications in a prompt way to stabilize product quality, and strengthen technological reserves through joint or independent research and development to adjust to market need. In addition, the early release of polycarboxylic acid water-reducing agent basic material standards and the stability of polycarboxylic acid water-reducing representative raw material rates are additionally really important to ensure the security of polycarboxylic acid water-reducing representative product performance.
Technique 2: Idea in examination results as opposed to item specifications
Some items that are fantastic in the water-reducing agent specs, or perhaps items with superb examination outcomes, might not be suitable for a details task. On the contrary, some products might satisfy the demands of concrete product preparation for a particular job despite the fact that the examination outcomes are not very exceptional. Additionally, due to modifications in raw materials, the test results throughout task bidding process can not represent the actual application of the task. GB50119-2003 “Technical Specifications for Application of Concrete Admixtures” “2.1.4” clearly states: The raw materials used in concrete with admixtures, such as cement, sand, stone, admixtures, and admixtures, will adhere to the arrangements of the appropriate national standards active; when trial-mixing concrete with admixtures, the raw products made use of in the job shall be utilized, and the examination things shall be figured out according to the layout and construction needs. The examination conditions shall be the same as the building and construction problems. When the raw products made use of in the project or the concrete performance demands transform, the trial-mixing test will be carried out once again.
(Cabr superliasticizer)
Method 3: Stay clear of call in between polycarboxylic acid water reducers and iron products
For polycarboxylic acid water reducer manufacturers and distributors, unique production devices and assembly line will be made use of to manufacture and intensify polycarboxylic acid water reducers, and polycarboxylic acid water reducers will not be manufactured or compounded making use of the exact same production line as various other water reducers. In addition, the transportation and storage space of polycarboxylic acid water reducers shall not utilize iron materials (other than stainless steel) however plastic, glass and various other materials. Contact with iron sometimes causes adjustments in the efficiency of polycarboxylic acid water reducers.
Method 4: Resolutely prevent mixing other sorts of admixtures
It is purely forbidden to mix other water reducers or various other sorts of admixtures. There are 2 definitions. First, the compounding of polycarboxylic acid water reducers (such as with lignin sulfonate, air entrainment, defoaming, slowing down and other parts) can just be accomplished by admixture suppliers or vendors. The user of the water reducer, that is, the concrete preparer, just needs to test and save its appropriate efficiency. Nothing else elements may be worsened in it, nor may other components be blended in it because of negligence. It is absolutely restricted to utilize pumps and metering devices for pumping and metering other admixtures without cleansing. Another meaning is that concrete mixing tools, transportation automobiles, and pumping tools are best utilized for concrete blended with polycarboxylic acid water reducers. When sharing blending tools, transport automobiles and pumping tools, these tools has to be thoroughly cleaned up before they can be utilized for concrete combined with various other kinds of admixtures, and vice versa.
Method 5: Purely gauge the water reducer and mix water
When preparing concrete mixtures with polycarboxylic acid water reducers, the optimal water reducer dose and water consumption identified by the lab should be strictly measured. Do not boost the water reducer dose or water intake at will to stay clear of damaging phenomena such as segregation, bleeding, hardening, and raised air material in the blended concrete, which will certainly impact the regular pumping building and construction and putting top quality of the concrete.
The moisture had in the raw materials sand and stone accumulations have to be accurately gauged and subtracted from the overall water intake to avoid damaging consequences triggered by inaccurate discovery of the dampness consisted of in the sand and stone aggregates.
( concrete addtives)
Approach 6: Appropriately encounter the compatibility trouble of polycarboxylic acid water reducers and cement/admixtures
The compatibility trouble of admixtures and cement/admixtures has a lengthy history. For many years, the adaptability study deal with naphthalene-based high-efficiency water-reducing agents and their substance items has actually attained good results:
With the hard work of scientists, concrete preparers, admixture manufacturers, cement and admixture manufacturers, concrete erectors and managers have collectively identified this issue, changing the circumstance in which admixture producers and vendors have always thought all responsibilities.The conflict of admixtures and cement/admixtures is credited to lots of influencing aspects, and comprehensive study has been carried out on their affecting regulations. A collection of efficient options have actually been discovered for the details incompatibility in between admixtures and cement/admixtures.
Technique 7: Purely regulate the vibration span and resonance time
Given that the depression of concrete prepared with polycarboxylic acid-based water-reducing agents is typically big and the viscosity of the mix is reduced, the resonance span and vibration time after the concrete combination is put need to be figured out with experiments or ought to be led by experts. Intend the vibration span is as well little or the vibration time is also long. Because situation, it is simple to create structural issues such as a serious decrease in concrete air content and serious stratification of the aggregate stage and paste stage.
Method 8: Reinforce preliminary maintenance and prevent breaking.
On any event, for any kind of concrete mix, initial and later maintenance after putting is extremely crucial.
Polycarboxylic acid water reducer has little result on the shrinking performance of concrete; to put it simply, the addition of polycarboxylic acid water reducer does not exceedingly increase the contraction of concrete, which does not mean that the concrete with polycarboxylic acid water reducer can relax and even terminate the maintenance.
Like concrete with various other admixtures, the secondary surface area denigration, movie covering or splashing of concrete with polycarboxylic acid water reducer after putting and resonance is very reliable in preventing its plastic shrinkage cracks. Continuous 7d or 14d moisturizing upkeep is not only necessary for the normal development of concrete stamina but also a warranty to avoid its drying shrinkage fractures.
( foamed concrete)
In order to boost the crack resistance of concrete with polycarboxylic acid, it is also necessary to include a particular quantity of fiber, and this kind of concrete still requires great wet curing to make sure that the structure does not split.
Approach 9: Construction and monitoring systems need to function very closely with concrete prep work and admixture providers
In the task, it is unpreventable to experience various technological problems, technological disputes and even problems and conflicts triggered by engineering crashes. The utmost objective of all celebrations involved in the project is to make sure the smooth progression of the project and the quality of the project. The history of polycarboxylic acid water reducers in manufacturing and application in real tasks is extremely brief, and the collected design experience can be much better. It is easy to experience application issues and even lead to engineering accidents right now, the building system or management unit needs to function carefully with the concrete preparation, polycarboxylic acid water reducer production and supply, and cement/admixture production and supply from a technological point of view and carry out thorough analysis to recommend reliable services.
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