Technique 1: Enhance technological degree, maintain item quality, and enhance technological reserves:
According to the study, only a few suppliers of polycarboxylic acid water reducer products in my country are separately created, and the majority of various other suppliers introduce technology from college research organizations or research institutes or straight introduce modern technology from various other companies to begin production. Due to the restricted technological toughness of the producers themselves, they do not have a deep understanding of the polycarboxylic acid water reducer technology they create, and it is challenging to adjust to various modifications in resources and processes, and there is no other way to discuss the security of product top quality. As a result, it is suggested that polycarboxylic acid water-reducing representative manufacturers actively accept universities and study institutes to fully comprehend the different factors influencing the performance of polycarboxylic acid water-reducing agent products, adjust the synthesis process parameters in a prompt fashion to maintain product quality, and strengthen technical reserves through joint or independent r & d to adjust to market demand. On top of that, the early launch of polycarboxylic acid water-reducing representative resources criteria and the stability of polycarboxylic acid water-reducing agent resources rates are additionally extremely crucial to make sure the security of polycarboxylic acid water-reducing representative product performance.
Technique 2: Belief in test outcomes rather than product specifications
Some products that are impressive in the water-reducing agent specifications, and even items with exceptional test outcomes, might not be suitable for a certain job. As a matter of fact, some items might meet the needs of concrete material prep work for a certain project even though the test outcomes are not really exceptional. In addition, as a result of adjustments in resources, the examination results throughout project bidding can not represent the real implementation of the task. GB50119-2003 “Technical Specs for Application of Concrete Admixtures” “2.1.4” plainly specifies: The raw materials used in concrete with admixtures, such as cement, sand, stone, admixtures, and admixtures, will comply with the arrangements of the appropriate nationwide criteria active; when trial-mixing concrete with admixtures, the raw materials utilized in the task will be used, and the examination items will be established according to the style and building demands. The test problems will coincide as the building and construction problems. When the raw materials used in the job or the concrete performance requirements change, the trial-mixing examination shall be conducted again.
(Cabr superliasticizer)
Approach 3: Stay clear of contact between polycarboxylic acid water reducers and iron materials
For polycarboxylic acid water reducer manufacturers and vendors, unique production devices and production lines will be utilized to manufacture and compound polycarboxylic acid water reducers, and polycarboxylic acid water reducers will not be synthesized or intensified using the exact same production line as other water reducers. Additionally, the transport and storage space of polycarboxylic acid water reducers will not utilize iron materials (except stainless-steel) yet plastic, glass and other products. Call with iron occasionally causes modifications in the efficiency of polycarboxylic acid water reducers.
Technique 4: Resolutely avoid mixing various other types of admixtures
It is strictly restricted to mix other water reducers or other sorts of admixtures. There are 2 meanings. First, the compounding of polycarboxylic acid water reducers (such as with lignin sulfonate, air entrainment, defoaming, hampering and other components) can just be carried out by admixture suppliers or providers. The customer of the water reducer, that is, the concrete preparer, only requires to test and store its appropriate efficiency. Nothing else parts may be worsened in it, nor might various other parts be blended in it because of negligence. It is definitely forbidden to utilize pumps and metering equipment for pumping and metering various other admixtures without cleaning. Another significance is that concrete mixing equipment, transport cars, and pumping devices are best used for concrete mixed with polycarboxylic acid water reducers. When sharing blending equipment, transportation automobiles and pumping devices, these devices should be thoroughly cleaned up prior to they can be made use of for concrete combined with other sorts of admixtures, and vice versa.
Technique 5: Purely determine the water reducer and mix water
When preparing concrete combinations with polycarboxylic acid water reducers, the optimal water reducer dosage and water usage identified by the laboratory must be purely determined. Do not increase the water reducer dosage or water intake at will to avoid unfavorable sensations such as partition, bleeding, solidifying, and boosted air material in the blended concrete, which will impact the typical pumping building and construction and putting top quality of the concrete.
The moisture contained in the raw materials sand and rock accumulations must be precisely determined and subtracted from the overall water consumption to avoid adverse repercussions caused by inaccurate detection of the wetness had in the sand and stone accumulations.
( concrete addtives)
Technique 6: Properly face the compatibility trouble of polycarboxylic acid water reducers and cement/admixtures
The compatibility trouble of admixtures and cement/admixtures has a lengthy background. Over the years, the flexibility research work with naphthalene-based high-efficiency water-reducing representatives and their compound items has attained excellent results:
Via the hard work of researchers, concrete preparers, admixture makers, concrete and admixture suppliers, concrete builders and supervisors have actually jointly acknowledged this issue, changing the scenario in which admixture makers and vendors have constantly thought all responsibilities.The conflict of admixtures and cement/admixtures is credited to several influencing factors, and in-depth research study has actually been carried out on their influencing regulations. A collection of effective services have been discovered for the certain conflict between admixtures and cement/admixtures.
Technique 7: Strictly control the resonance distance and vibration time
Since the slump of concrete prepared with polycarboxylic acid-based water-reducing representatives is typically huge and the thickness of the mix is low, the vibration radius and resonance time after the concrete blend is put ought to be figured out through experiments or must be led by experts. Mean the resonance distance is as well little or the resonance time is also long. Because situation, it is simple to trigger structural flaws such as a severe decline in concrete air content and major stratification of the accumulated stage and paste phase.
Approach 8: Reinforce first maintenance and stop splitting.
On any kind of event, for any kind of concrete mix, first and later maintenance after putting is really vital.
Polycarboxylic acid water reducer has little effect on the shrinkage performance of concrete; to put it simply, the addition of polycarboxylic acid water reducer does not excessively boost the shrinkage of concrete, which does not mean that the concrete with polycarboxylic acid water reducer can unwind and even terminate the upkeep.
Like concrete with various other admixtures, the second surface area smearing, film covering or splashing of concrete with polycarboxylic acid water reducer after putting and resonance is extremely efficient in avoiding its plastic shrinkage cracks. Continuous 7d or 14d moisturizing maintenance is not just required for the regular development of concrete stamina but also a guarantee to prevent its drying shrinking splits.
( foamed concrete)
In order to boost the fracture resistance of concrete with polycarboxylic acid, it is likewise essential to include a specific amount of fiber, and this kind of concrete still requires good wet treating to make sure that the framework does not break.
Technique 9: Construction and monitoring devices must work carefully with concrete preparation and admixture suppliers
In the job, it is inescapable to run into different technological difficulties, technical disputes and even disputes and conflicts brought on by design mishaps. The supreme objective of all events associated with the project is to ensure the smooth progress of the job and the high quality of the project. The background of polycarboxylic acid water reducers in manufacturing and application in actual tasks is extremely short, and the built up design experience can be much better. It is simple to come across application issues and even bring about design accidents currently, the construction device or monitoring unit requires to function closely with the concrete preparation, polycarboxylic acid water reducer production and supply, and cement/admixture manufacturing and supply from a technological perspective and conduct extensive analysis to suggest reliable options.
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