Commodity concrete water reducer used to improve the workability of the concrete, but also become factors concrete workability fluctuations, which affect the performance of the slump is particularly evident. Mostly bad performance slump concrete transport and waiting time at the site significantly reduced liquidity situation after Pumping performance degradation occurs there. Slump loss has many causes, including environmental factors (temperature, wind, strong sunlight, etc.), high temperature when mixing concrete materials (especially cement), poor water reducing formula, reducing agent and the gelling material suitability bad. Concrete technical personnel should count each brand superplasticizer concrete mixing slump situation provisioning process, as the basis for the re-evaluation, polycarboxylate water reducer synthesis, survival of the fittest, applying pressure to the water reducer supplier, with a view to superplasticizer and different to do to improve the adaptability of cement and water reducing formula adjusted to seasonal variations, polycarboxylate water reducer sales, thereby reducing the formula due to poor water reducing concrete workability and adverse or serious slump loss Case. And aggregate adaptability is relatively sensitive to the amount of sand in the mud and rock in the dust content or contain gravel, clay content and even particle size, polycarboxylate water reducer manufacturers, will significantly affect the mix was state. Practical application shows that: at a fixed additives content, content powder at 1% index slump can only reduce 50 ~ 60mm, sand clay content difference of 2%, in order to achieve the same slump , water consumption increases at least 30kg, and can cause changes in aggregate size of the entire disk concrete segregation, showing its sensitivity. Therefore, the use of poly-carboxylic acid-based additives, should be based on changes in the use of raw materials, adjust production mix proportion. Their water-reducing admixture rate should not be too high, Xi'an polycarboxylate superplasticizer, slump of time not too long, otherwise it will backfire. The concrete proposal in general, the use of low water reduction, mixing ratio design of water less than 165kg, monitor quality admixtures, detection index if there are significant changes, especially when the poor, should be to reduce this material usage in order to ensure the performance of mixing things. Regular sampling of raw materials, the test chamber mix concrete test to detect if there are significant changes in indicators, should be redesigned with the ratio of the production. Strong Polycarboxylate high-strength building materials _ _ Xi'an Polycarboxylate high-strength building materials provided by the Linyi City Limited. Linyi high-strength building materials Limited (www.lygqjc.cn) located in Linyi City Hedong District One kilometer away-car supermarket North Road East. Scraps and development in the wave of market economy, the current high-strength building materials has a high profile in concrete and products enjoy a good reputation. Building materials made of high-strength network-wide business alliance certification, marking our service and management level has reached a new height. High-strength building materials of all employees willing to work with all people of insight and common development, for a better future.