High-damping self-compaction concrete

Abstract

The invention discloses a high-damping self-compaction concrete which is composed of P.O42.5 ordinary Portland cement, composite reinforcing powder, emulsified asphalt, polycarboxylic acid high efficiency water reducing agent, mixing water, composite deformation component, II-zone grade river sand with the fineness modulus of 2.6-3.0, and limestone gravel with the particle size of 5-20mm. Every cubic meter of concrete comprises the following components in parts by mass: 16 parts of cement, 7.8 parts of composite reinforcing powder, 0.8-1.0 part of emulsified asphalt, 7.5 parts of mixing water, 0.22-0.27 part of water reducer, 1.6-1.7 parts of composite deformation component, 29-30 parts of river sand and 36-37 parts of limestone gravel. The high-damping self-compaction concrete has the advantages of excellent damping function, excellent shock resistance, higher mechanical strength, low elastic modulus and obvious technical and economical effects, and especially can effectively improve the service behavior and service life of basic structures subjected to impact, vibration and other repeated mobile load actions, such as high-speed railway track structures, bridge structures and other engineering structures.

Description

technical field [0001] The invention relates to concrete, in particular to a high-damping self-compacting concrete with energy-absorbing and vibration-reducing functions. Background technique [0002] Concrete has always been one of the most widely used building materials because of its cheapness, easy availability and durability, and has played an important role in the progress of human civilization. However, with the huge demand of economic and social development and the rapid progress of modern construction technology, various large-span and complex civil engineering structures are emerging, which put forward higher requirements for the performance of concrete materials. Traditional concrete is difficult to adapt to these new engineering structures. The needs of development; especially since entering the modern society, the social activities of human beings have become more and more frequent, and various natural disasters have occurred frequently, such as vibration, noise...

AI Technical Summary

Problems solved by technology

Although relevant domestic scholars have conducted research on how to improve the damping function of concrete in the above aspects, there is still a lot of room for development of damping concrete materials. For example, the damping function of concrete needs to be further improved. Performance such as the decline in strength, etc., especially the new high-damping self-compacting concrete materials need to be further explored

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