Teach you how to use polycarboxylate water reducer safely! polycarboxylate plasticizer
Technique 1: Enhance technological level, support product high quality, and strengthen technological reserves:
According to the survey, only a few manufacturers of polycarboxylic acid water reducer items in my country are independently created, and most various other manufacturers introduce technology from college research organizations or research institutes or directly introduce modern technology from various other firms to start production. Due to the minimal technological toughness of the makers themselves, they do not have a deep understanding of the polycarboxylic acid water reducer innovation they create, and it is tough to adapt to numerous adjustments in resources and procedures, and there is no other way to talk about the security of item top quality. As a result, it is advised that polycarboxylic acid water-reducing representative suppliers actively accept universities and research institutes to completely understand the various variables affecting the performance of polycarboxylic acid water-reducing agent products, adjust the synthesis procedure specifications in a prompt fashion to stabilize product quality, and enhance technological reserves via joint or independent research and development to adapt to market need. On top of that, the early launch of polycarboxylic acid water-reducing agent raw material standards and the stability of polycarboxylic acid water-reducing representative resources prices are likewise really essential to ensure the security of polycarboxylic acid water-reducing representative item performance.
Method 2: Idea in test outcomes instead of product requirements
Some items that are remarkable in the water-reducing agent specifications, and even products with excellent examination outcomes, may not appropriate for a particular task. As a matter of fact, some items may meet the needs of concrete product prep work for a particular job despite the fact that the examination results are not really superior. Additionally, due to adjustments in resources, the examination results throughout task bidding can not stand for the real execution of the job. GB50119-2003 “Technical Specs for Application of Concrete Admixtures” “2.1.4” plainly specifies: The raw materials utilized in concrete with admixtures, such as concrete, sand, rock, admixtures, and admixtures, will adhere to the stipulations of the appropriate nationwide criteria effective; when trial-mixing concrete with admixtures, the raw products used in the job will be made use of, and the test products will be identified according to the layout and building needs. The test problems shall be the same as the building and construction conditions. When the raw materials made use of in the job or the concrete performance needs transform, the trial-mixing examination will be conducted once again.
(Cabr superliasticizer)
Method 3: Stay clear of contact between polycarboxylic acid water reducers and iron materials
For polycarboxylic acid water reducer makers and providers, unique manufacturing devices and production lines shall be used to synthesize and worsen polycarboxylic acid water reducers, and polycarboxylic acid water reducers shall not be manufactured or intensified using the same production line as various other water reducers. Additionally, the transportation and storage of polycarboxylic acid water reducers shall not make use of iron materials (other than stainless steel) but plastic, glass and various other products. Call with iron in some cases triggers adjustments in the efficiency of polycarboxylic acid water reducers.
Method 4: Resolutely stay clear of mixing various other sorts of admixtures
It is strictly prohibited to blend other water reducers or other sorts of admixtures. There are 2 meanings. Initially, the compounding of polycarboxylic acid water reducers (such as with lignin sulfonate, air entrainment, defoaming, retarding and other elements) can only be carried out by admixture suppliers or suppliers. The customer of the water reducer, that is, the concrete preparer, only needs to examine and keep its pertinent performance. No other components may be intensified in it, neither may other components be mixed in it because of neglect. It is definitely prohibited to make use of pumps and metering devices for pumping and metering various other admixtures without cleansing. An additional meaning is that concrete mixing equipment, transportation vehicles, and pumping equipment are best made use of for concrete blended with polycarboxylic acid water reducers. When sharing mixing devices, transportation automobiles and pumping devices, these equipment needs to be extensively cleaned up before they can be made use of for concrete combined with various other sorts of admixtures, and vice versa.
Technique 5: Purely measure the water reducer and mix water
When preparing concrete blends with polycarboxylic acid water reducers, the optimum water reducer dosage and water intake determined by the laboratory ought to be strictly measured. Do not increase the water reducer dosage or water usage at will to avoid damaging sensations such as segregation, bleeding, hardening, and enhanced air web content in the mixed concrete, which will certainly affect the normal pumping building and construction and putting quality of the concrete.
The dampness consisted of in the raw materials sand and rock aggregates have to be accurately determined and subtracted from the overall water consumption to avoid damaging consequences triggered by imprecise detection of the wetness contained in the sand and stone accumulations.
( concrete addtives)
Method 6: Appropriately deal with the compatibility issue of polycarboxylic acid water reducers and cement/admixtures
The compatibility trouble of admixtures and cement/admixtures has a lengthy background. For many years, the flexibility research work with naphthalene-based high-efficiency water-reducing representatives and their compound products has actually achieved great results:
Via the hard work of researchers, concrete preparers, admixture producers, cement and admixture manufacturers, concrete erectors and supervisors have actually jointly identified this trouble, altering the circumstance in which admixture manufacturers and distributors have constantly presumed all responsibilities.The conflict of admixtures and cement/admixtures is attributed to many influencing factors, and extensive study has been performed on their affecting legislations. A series of reliable solutions have actually been checked out for the particular incompatibility in between admixtures and cement/admixtures.
Technique 7: Strictly regulate the resonance radius and vibration time
Because the slump of concrete prepared with polycarboxylic acid-based water-reducing representatives is generally big and the viscosity of the combination is reduced, the resonance span and resonance time after the concrete mix is poured need to be determined with experiments or should be directed by professionals. Intend the resonance radius is as well little or the resonance time is also long. In that case, it is simple to cause architectural defects such as a severe reduction in concrete air content and significant stratification of the accumulated phase and paste phase.
Method 8: Reinforce preliminary maintenance and prevent cracking.
On any type of celebration, for any type of concrete mixture, initial and later upkeep after putting is very important.
Polycarboxylic acid water reducer has little impact on the shrinkage efficiency of concrete; simply put, the enhancement of polycarboxylic acid water reducer does not exceedingly boost the shrinking of concrete, which does not imply that the concrete with polycarboxylic acid water reducer can loosen up or even terminate the upkeep.
Like concrete with other admixtures, the additional surface area denigration, movie covering or splashing of concrete with polycarboxylic acid water reducer after putting and vibration is very effective in preventing its plastic contraction fractures. Continual 7d or 14d moisturizing maintenance is not only required for the regular growth of concrete toughness but also an assurance to stop its drying shrinkage splits.
( foamed concrete)
In order to boost the crack resistance of concrete with polycarboxylic acid, it is additionally required to include a particular quantity of fiber, and this kind of concrete still needs great wet healing to ensure that the framework does not break.
Technique 9: Building and management devices ought to function carefully with concrete preparation and admixture providers
In the job, it is unpreventable to experience different technical troubles, technical disagreements and also disputes and disputes triggered by design accidents. The utmost goal of all parties involved in the project is to ensure the smooth development of the project and the high quality of the job. The history of polycarboxylic acid water reducers in production and application in actual jobs is extremely short, and the gathered engineering experience might be better. It is simple to run into application issues and even lead to design mishaps right now, the construction device or monitoring unit requires to function carefully with the concrete preparation, polycarboxylic acid water reducer manufacturing and supply, and cement/admixture manufacturing and supply from a technical point of view and carry out comprehensive analysis to recommend reliable services.
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