Cone-disc type waste concrete regenerated coarse aggregate mortar stripping device

Abstract

The invention discloses a cone-disc type waste concrete regenerated coarse aggregate mortar stripping device. The cone-disc type waste concrete regenerated coarse aggregate mortar stripping device comprises a base, a material collection bin and a cone-disc type grinding disc, wherein the cone-disc type grinding disc is composed of an upper grinding disc and a lower grinding disc, the grinding surface of the lower grinding disc is of a convex cone type, the grinding surface of the upper grinding disc is of a concave cone type, and the grinding surface of the upper grinding disc is in fit with that of the lower grinding disc; the base is provided with a plurality of reverse-hook-shaped supports, the disc surface of the upper grinding disc is correspondingly provided with position-limiting holes, and reverse hooks of all the reverse-hook-shaped supports penetrate into the corresponding position-limiting holes to restrict the upper grinding disc to be only capable of sliding up and down; ahydraulic force transmitting device is arranged between the upper grinding disc and all the reverse-hook-shaped supports, and ascending and descending of the upper grinding disc are controlled through stretching and contracting adjustment of the hydraulic force transmitting device; and the center of the upper grinding disc is provided with a material inlet, the material inlet penetrates out of the top of the material collection bin, and the lower portion of the material collection bin is provided with a material outlet. The cone-disc type waste concrete regenerated coarse aggregate mortar stripping device is simple in structure, the aggregate mortar stripping effect is good, and the original particle size of coarse aggregate can be maintained to make the performance of the coarse aggregate be close to natural aggregate, so that the workability, strength and durability of freshly-mixed waste concrete are improved.

Description

technical field [0001] The invention relates to a concrete aggregate regeneration device, in particular to a cone-disc type waste concrete regeneration coarse aggregate mortar stripping device. Background technique [0002] Today, with the rapid economic and social development, my country has carried out a large number of new rural construction and urban-rural renovation projects. There are countless buildings to be demolished every year, and the demolition of buildings will inevitably produce a large amount of waste concrete that cannot be degraded. Waste concrete contains a large amount of sand and gravel aggregates. If high-quality waste concrete recycled coarse aggregates are obtained by efficient preparation technology and applied to urban and rural buildings in my country, it will not only save natural resources, but also have a good Environmental and economic benefits. [0003] A certain amount of old mortar adheres to the surface of waste concrete recycled coarse agg...

AI Technical Summary

Problems solved by technology

Although chemical treatment can effectively reduce the water absorption of recycled coarse aggregate, it does not fundamentally remove the hardened mortar on the surface of recycled coarse aggregate

Moreover, after the surface of the recycled coarse aggregate is strengthened with a waterproofing agent or solution, the bonding ability between the surface of the recycled coarse aggregate and the cement interface is greatly reduced, and the cement cannot completely cover the recycled coarse aggregate, which makes it difficult to treat the recycled coarse aggregate with a waterproofing agent. The strength of concrete mixed with recycled coarse aggregate is greatly reduced

Moreover, the cost of the chemical treatment method is relatively high, and it is not suitable for industrial production, so it is not suitable for use.

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