Method 1: Improve technical level, stabilize product quality, and strengthen technical gets:
According to the study, just a few suppliers of polycarboxylic acid water reducer products in my nation are individually developed, and a lot of various other manufacturers present modern technology from college study establishments or study institutes or straight introduce technology from various other business to start production. As a result of the restricted technical toughness of the manufacturers themselves, they do not have a deep understanding of the polycarboxylic acid water reducer modern technology they generate, and it is hard to adjust to various adjustments in raw materials and procedures, and there is no chance to talk about the stability of product quality. As a result, it is suggested that polycarboxylic acid water-reducing representative suppliers proactively accept colleges and research institutes to totally understand the various aspects influencing the performance of polycarboxylic acid water-reducing representative products, change the synthesis process specifications in a timely way to stabilize item quality, and enhance technological books via joint or independent research and development to adjust to market demand. In addition, the early release of polycarboxylic acid water-reducing agent raw material requirements and the security of polycarboxylic acid water-reducing agent basic material costs are also really vital to make sure the stability of polycarboxylic acid water-reducing agent product performance.
Technique 2: Belief in test results instead of product requirements
Some products that are impressive in the water-reducing representative specifications, and even items with superb examination results, may not be suitable for a specific project. On the other hand, some items may fulfill the demands of concrete product prep work for a specific project despite the fact that the test results are not really superior. Furthermore, due to modifications in raw materials, the examination results throughout project bidding can not stand for the actual application of the task. GB50119-2003 “Technical Specifications for Application of Concrete Admixtures” “2.1.4” clearly stipulates: The raw products utilized in concrete with admixtures, such as concrete, sand, stone, admixtures, and admixtures, will comply with the stipulations of the appropriate national standards active; when trial-mixing concrete with admixtures, the raw materials utilized in the task shall be utilized, and the test things will be established according to the design and building and construction demands. The test problems will be the same as the construction conditions. When the raw products made use of in the job or the concrete efficiency needs transform, the trial-mixing examination shall be performed once more.
(Cabr superliasticizer)
Approach 3: Avoid get in touch with between polycarboxylic acid water reducers and iron products
For polycarboxylic acid water reducer makers and distributors, special manufacturing equipment and production lines will be used to synthesize and intensify polycarboxylic acid water reducers, and polycarboxylic acid water reducers shall not be synthesized or compounded utilizing the same production line as other water reducers. Additionally, the transport and storage space of polycarboxylic acid water reducers shall not make use of iron materials (other than stainless steel) but plastic, glass and various other materials. Contact with iron often causes modifications in the efficiency of polycarboxylic acid water reducers.
Method 4: Resolutely prevent mixing other sorts of admixtures
It is purely prohibited to mix various other water reducers or various other types of admixtures. There are 2 meanings. Initially, the compounding of polycarboxylic acid water reducers (such as with lignin sulfonate, air entrainment, defoaming, hampering and various other parts) can just be carried out by admixture manufacturers or distributors. The individual of the water reducer, that is, the concrete preparer, just needs to test and store its pertinent efficiency. No other parts may be intensified in it, nor may various other elements be blended in it because of carelessness. It is absolutely restricted to use pumps and metering equipment for pumping and metering other admixtures without cleaning. One more definition is that concrete mixing tools, transportation lorries, and pumping equipment are best used for concrete combined with polycarboxylic acid water reducers. When sharing blending tools, transportation cars and pumping equipment, these devices needs to be thoroughly cleaned prior to they can be made use of for concrete mixed with other sorts of admixtures, and vice versa.
Approach 5: Strictly measure the water reducer and mix water
When preparing concrete mixes with polycarboxylic acid water reducers, the ideal water reducer dose and water consumption established by the laboratory needs to be purely measured. Do not enhance the water reducer dosage or water consumption at will to avoid adverse phenomena such as partition, bleeding, setting, and boosted air material in the combined concrete, which will certainly impact the typical pumping building and construction and putting high quality of the concrete.
The moisture had in the raw products sand and stone accumulations must be precisely gauged and deducted from the total water usage to stop adverse consequences brought on by incorrect detection of the wetness consisted of in the sand and stone aggregates.
( concrete addtives)
Technique 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 background. For many years, the versatility research deal with naphthalene-based high-efficiency water-reducing agents and their substance items has achieved excellent results:
Via the effort of scientists, concrete preparers, admixture makers, cement and admixture makers, concrete contractors and managers have actually jointly acknowledged this trouble, transforming the situation in which admixture suppliers and providers have constantly thought all responsibilities.The conflict of admixtures and cement/admixtures is credited to many influencing aspects, and thorough research has been executed on their influencing legislations. A collection of efficient services have been discovered for the details conflict in between admixtures and cement/admixtures.
Method 7: Purely control the resonance span and vibration time
Considering that the depression of concrete prepared with polycarboxylic acid-based water-reducing representatives is normally large and the viscosity of the mixture is low, the resonance radius and resonance time after the concrete combination is put need to be identified through experiments or should be led by experts. Intend the resonance distance is too small or the vibration time is as well long. In that instance, it is simple to cause structural problems such as a severe decline in concrete air material and significant stratification of the aggregate phase and paste stage.
Technique 8: Enhance preliminary maintenance and prevent splitting.
On any kind of celebration, for any kind of concrete combination, preliminary and later upkeep after pouring is extremely essential.
Polycarboxylic acid water reducer has little effect on the contraction performance of concrete; simply put, the addition of polycarboxylic acid water reducer does not exceedingly raise the shrinking of concrete, which does not suggest that the concrete with polycarboxylic acid water reducer can kick back or perhaps terminate the upkeep.
Like concrete with various other admixtures, the second surface area smearing, film covering or spraying of concrete with polycarboxylic acid water reducer after pouring and resonance is extremely efficient in preventing its plastic contraction cracks. Constant 7d or 14d moisturizing upkeep is not just required for the regular development of concrete strength but likewise a guarantee to stop its drying contraction splits.
( foamed concrete)
In order to boost the crack resistance of concrete with polycarboxylic acid, it is likewise necessary to include a specific amount of fiber, and this kind of concrete still needs excellent wet treating to make certain that the framework does not break.
Method 9: Building and management devices should work carefully with concrete preparation and admixture distributors
In the project, it is inescapable to encounter numerous technical problems, technical disagreements and even problems and conflicts triggered by engineering crashes. The ultimate objective of all parties involved in the project is to guarantee the smooth progress of the task and the high quality of the job. The background of polycarboxylic acid water reducers in manufacturing and application in real projects is very brief, and the accumulated engineering experience could be much better. It is easy to experience application problems and even lead to design crashes currently, the building and construction system or monitoring system needs to work closely with the concrete preparation, polycarboxylic acid water reducer manufacturing and supply, and cement/admixture production and supply from a technological point of view and carry out thorough evaluation to suggest effective services.
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