Nodular cast iron fiber well lid and preparation method thereof

Abstract

The invention discloses a nodular cast iron fiber well lid. The nodular cast iron fiber well lid is composed of a lid plate and a well ring, wherein the lid plate is prepared by combining and machining a nodular cast iron integrated framework and steel fiber concrete; the upper and lower side surfaces of the nodular cast iron integrated well lid framework are filled with and completely wrapped by steel fiber concrete raw materials; a frame of the nodular cast iron integrated framework wraps the edge of the steel fiber concrete to form the lid plate; the well ring is formed by pouring the steel fiber concrete; the bonding force is quite high after the steel fiber concrete is poured into the nodular cast iron integrated well lid framework, so that the overall strength of the well lid is effectively guaranteed. The well ring is of a steel bar concrete structure, and the lid plate can be combined with the well ring without expanding agents. The contact portion of the lid plate and the well ring is the contact between concrete and nodular iron, and vibration noise can be effectively lowered.

Description

technical field [0001] The invention relates to a well cover, in particular to a well cover prepared by ductile iron integrated well cover framework and steel fiber concrete and a preparation method thereof. Background technique [0002] Various well facilities in urban roads require a large number of manhole covers. Most of the manhole covers currently used are cast iron covers or reinforced concrete manhole covers. Reinforced concrete manhole covers are not strong enough and severely damaged. High, the vibration is loud and often lost, and pedestrians and vehicles often fall into the well, which brings economic losses and adverse social impacts. [0003] For this reason, in recent years, people have been devoting themselves to the research of a new type of manhole cover preparation material. The conference paper "Steel Fiber High Strength Concrete Inspection Manhole Cover Design" of the China Portland Society Concrete Cement Products Branch Council and Academic Exchange Co...

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Problems solved by technology

However, the manhole cover prepared by the above method has the problem of uneven mixing of steel fiber and mortar, resulting in a decrease in strength and durability, and at the same time, the purpose of reducing vibration and noise cannot be achieved.

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