Zhang, Feng published the artcileEffect of new type low-temperature early strength accelerator on the strength and durability of concrete, Recommanded Product: Triisopropanolamine, the publication is Hunningtu (2021), 98-102, 111, database is CAplus.
A new type of low-temperature early-strength accelerator, without alkali, chlorine and sulfate ions, was prepared with calcium bromide, lithium bromide and triisopropanolamine, and its effects on the workability, strength and durability of concrete at 5°C were studied. The results show that, the low-temperature early strength accelerator had little influence on the workability of concrete, but it hada significant low-temperature early-strength performance and a good adaptability to different fly ash contents (such as 10%, 20%, 30%). The 1 d, 3 d and 7 d compressive strength ratios of the C50 concrete mixed with early strength accelerators cured at 5°C, reached 157%, 132% and 123% resp., and the retention rates from 28 d to 120 d all exceeded 110%. The strength of concrete at each age was already close to that of the contrast sample cured at 20°C. The incorporation of low-temperature early strength accelerators would increase the dry shrinkage of concrete slightly, and the elec. flux of concrete before 56 d would increase by 6% to 14%. However, the elec. flux of concrete after 90 d could be reduced and the frost resistance of concrete could be improved. The method of compounding 2% expansion agent and 3% silica fume in the early strength accelerator could reduce the dry shrinkage of concrete by 23% compared with that of the contrast sample at 120 d, and the elec. flux at 56 d was less than 1000 C. By the way, this method did not lose the strength of concrete.
Hunningtu published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C6H13I, Recommanded Product: Triisopropanolamine.
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