Steaming-free production technology for PHC pipe pile and application of steaming-free production technology

Abstract

The invention belongs to the building technology, relates to a steaming-free production technology for a PHC pipe pile and application of the steaming-free production technology and provides a steaming-free curing method for the pipe pile. The method includes the following steps that firstly, the pipe pile is subjected to insulation curing before demolding; and secondly, the pipe pile obtained after insulation curing in the step (1) is demolded and is subjected to natural curing after being demolded. The invention further provides the application of the above method in the production technology for the PHC pipe pile and the steaming-free production technology for the PHC pipe pile. By means of the steaming-free production technology for the PHC pipe pile and the application of the production technology, the steam curing link is omitted in the pile manufacturing process, the manufacturing difficulty and cost of the pipe pile are lowered, energy is saved, environment friendliness is facilitated, the performance of the manufactured PHC pipe pile meets various requirements of the standard, and very wide application prospects are achieved.

Description

technical field [0001] The invention belongs to construction technology, and relates to a steam-curing-free production process of PHC pipe piles and an application thereof. Background technique [0002] With the rapid development of various engineering constructions in my country, PHC pipe piles have been widely used in pile foundation projects of industrial and civil buildings, ports, water conservancy, railways, bridges and other projects due to their good mechanical properties and cost-effectiveness. Statistics show that the demand for PHC pipe piles is increasing year by year. In 2011, the production and sales of large domestic pipe pile enterprises exceeded 300 million yuan, and the annual output value exceeded 30 billion yuan. The output value of pipe piles has accounted for 50% of the output value of the national cement products industry. above. [0003] The production process of traditional PHC pipe piles needs to use steam curing and high pressure steam curing for ...

AI Technical Summary

Problems solved by technology

However, both high-pressure steam curing and pressure-free steaming processes require steam curing, consume a lot of energy, and have an adverse effect on the performance of pipe piles. Therefore, it is necessary to develop steam-free curing technology for the production of PHC pipe piles

However, the use of steam-free curing will lead to a decrease in the early strength of concrete. It is necessary to develop a new production process for PHC pipe piles without steam curing, and to take effective technical measures such as curing pool heat preservation and maintenance, to give full play to the heat of cement hydration and the heat preservation effect of the curing pool, and to improve concrete. Early curing temperature can effectively improve the early strength of concrete, thereby ensuring concrete demoulding time and formwork turnover

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