Early-strength water reducer for recycled aggregate concrete

Abstract

The invention provides an early-strength water reducer for recycled aggregate concrete, which is suitable for the field of building materials. The the early-strength water reducer comprises the following raw materials by weight percent: 20-25% of a polycarboxylic acid water reducer, 1-6% of tri-isopropanolamine, 0.5-2% of triethanolamine, 5-15% of sodium sulfocyanate, 3-10% of calcium formate, and 42-70.5% of water. The early-strength water reducer provided by the invention is low in dosage, good in early-strength effect, free from chloride ions, resistant to the corrosion of steel bars, suitable for recycled concrete, and capable of enhancing the early strength of a recycled concrete product and improving the peaceability of a recycled concrete mixture.

Description

[0001] technical field

[0002] The invention belongs to the field of building materials, in particular to an early-strength water reducer for recycled aggregate concrete.

[0003] Background technique

[0004] In the face of huge energy consumption in the construction industry, the recycling of construction waste has become an irreversible trend. The reuse of construction waste is already an important part of improving the environment. In terms of recycling construction waste, it is mainly broken into recycled coarse and fine aggregates, and then used in concrete or concrete products.

[0005] Early strength superplasticizer is an admixture that accelerates the development of early strength of concrete. Early-strength water reducer can promote the hydration and hardening of cement, shorten the maintenance cycle of concrete products, speed up the construction speed, and improve the turnover rate of formwork and site. The main types of early strength agents are: inorganic...

Images