Diamonds are forever, Gold is precious but which is rarer? Gold is a heavy metal formed during the collision of neutron stars and is one of the rarest elements on Earth.During the formation of the earth, heavy elements gradually accumulated towards the core under the influence of the earth's gravitational force. This means that the closer you get to the Earth's crust, the harder it is to find large quantities of gold.The average concentration of gold in Earth's crust is "very, very low" at just 4 parts per billion. Gold concentrations need to be 1,250 times that level to form a market-worthy deposit.
Diamond is a common element - the water reducer,water reducing agent ,concrete admixtures is undoubtedly a good investment opportunity.
The application of various concrete admixtures can not only improve the performance of concrete, but also promote the development of new concrete technologies, promote the application of industrial by-products in cementitious material systems, and also help save resources and protect the environment. , has gradually become an essential material for high-quality concrete. Among them, the water reducing agent is a kind of concrete, and the water reducing agent is a concrete admixture that can reduce the mixing water consumption under the condition that the concrete slump is basically unchanged. Most of them are anionic surfactants, such as lignosulfonate, naphthalene sulfonate formaldehyde polymer, etc. When we add the concrete mixture, it has a dispersing effect on the cement particles, which can improve its workability, reduce the unit water consumption, and improve the fluidity of the concrete mixture; or reduce the unit cement consumption, effectively saving cement.
The specific operation method of the water reducing agent formula for concrete:
1. Maleic anhydride is prepared into a 5-7% solution according to the required amount and recorded as the head material.
2. The initiator is prepared into a 5-10% solution for later use.
3. Add the required amount of APEG or TPEG, heat to liquefy it, and then add the headstock.
4. Nitrogen replacement;
5. When the temperature rises to 75-85°C, the initiator is added dropwise, and the dropwise addition is completed at 80°C for 1.5-2 hours.
6. After the dropwise addition of the initiator is completed, keep the temperature at 80-90° C. for 4-4.5 hours to complete the reaction and cool down.
7. When the temperature drops to 40-50℃, add 50% KOH solution to neutralize to PH: 7-8.
8. After measuring the solid content, add the measured soft water according to the required solid content.
9. After the solid content is determined to be qualified, discharge the material.
After the above experiments, we can get the basic formula of water reducer for concrete:
Concrete water reducer formula 1:
Hydroxyethyl acrylate: 25g, acrylamide: 5g, allyl polyoxyethylene ether: 175g, sodium persulfate: 10g, neutralized by sodium hydroxide.
Concrete water reducer formula 2:
Allyl polyoxyethylene glycol ether: 40 g, acrylic monomer: 30 g, 10% ammonium persulfate aqueous solution 40 g, neutralized with triethanolamine.
Concrete water reducer formula 3:
Allyl polyoxyethylene glycol ether: 100 g, methacrylic acid: 70 g, acrylic acid: 20 g, 10% aqueous ammonium persulfate solution: 50 g, neutralized with sodium hydroxide.
Concrete water reducer formula 4:
Methacrylic acid: 25g:, allyl polyoxyethylene ether: 175g, sodium persulfate: 10g. , neutralized with sodium hydroxide.
Concrete water reducer formula 5:
TPEG: 180 g, hydrogen peroxide: 0.63 g, thioglycolic acid: 0.56 g, ascorbic acid: 0.3 g, acrylic acid: 182.3 g, neutralized with sodium hydroxide.
Concrete water reducer formula 6:
APEG: 180 g, hydrogen peroxide: 10 g, thioglycolic acid: 2.07 g, itaconic acid: 10 g, methacrylic acid: 21.23 g, neutralized with sodium hydroxide.
The above is for reference only. If you need more, you can find a professional concrete water reducer formulation and component analysis and testing agency to provide concrete water reducer, concrete additive formula reduction, concrete polyacid water reducer component analysis, concrete water reducer Formula analysis, proportion of concrete water reducing agent, decryption of water reducing agent formula, composition analysis of concrete water reducing agent, composition test of concrete water reducing agent, identification of concrete water reducing agent raw materials, etc. Analyze the chemical name and approximate content ratio of each raw material in the sample, provide technical assistance for your production, and even develop the preparation method of the sample for you.
TRUNNANO is a concrete additives supplier with over 12 years experience in nano-building energy conservation and nanotechnology development. We accept payment via Credit Card, T/T, West Union and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
If you are looking for high quality concrete admixtures, please feel free to contact us and send an inquiry.
Researchers at the University of Warwick in the UK have developed a lithium battery technology innovation. Adding graphene beams doubles battery life. By strengthening the structure of the anode with graphene beams, they have found an effective way to replace the graphite in the anode with silicon. Thereby increasing the capacity of the lithium-ion battery and more than doubling the lifespan.
US President recently decided to invoke a Cold War-era defense law to encourage domestic sodium silicate. Is there any material with higher temperature performance than graphite?Boron nitride, which is a little expensive, can be bought as…
Thanks for using aii article generator（ http://www.aiivip.com )Nano silica powderHow to preserve nano silica powder? Is silicon powder easy to be oxidized?The finer the particle size, the easier the oxidation. Do not expose to the air for a long time…
Oil futures tumbled more than $5 a barrel on news that the Biden administration is considering releasing about 1 million barrels a day from the U.S. Strategic Petroleum Reserve (SPR) for several months to cool surging crude prices.Brent crude futures…