Self-compacting concrete

Abstract

The invention discloses a self-compacting concrete, which is characterized by comprising 100 parts of cement, 60-100 parts of coal ash, 20-50 parts of broken porcelain granula, 100-200 parts of broken stone, 1-5 parts of polycarboxylate superplasticizer, 0.001-0.08 part of tackifier, 0.001-0.1 part of defoamer, 280-360 parts of sand and 0.4-1 part of super plasticizer. Consequently, a structure with a complicated shape, thin walls and dense reinforcements can be cast and formed, a formwork can be prevented from being abraded by vibration, an agitator can be prevented from being abraded by the concrete, and thereby the construction speed and the sound restriction of the environment are improved, and the costs of labor, quality guarantee and those expended on other aspects are reduced; and meanwhile, the invention adopts a technology which uses waste porcelain instead of natural aggregate to produce the regeneration self-compacting concrete, and thereby the well meeting the currently proposed environmental-friendly and energy saving theme of a building system, haveing obvious environmental benefit, economic benefit and social benefit, particularly effectively increasing the compression strength, density, splitting tensile strength, rupture strength, elastic modulus and other indexes, and being applicable to continuous casting of dense type reinforcements and abnormal shape structures with large volume, large density and high span.

Description

(1) Technical field [0001] The present invention relates to a self-compacting concrete. (2) Background technology [0002] At present, in the concrete construction process, the cast-in-place concrete is usually pumped and compacted by vibrating with a hand-held vibrating rod. However, in the face of large-volume and long-span components, it is impossible to ensure uniform feeding and compact vibration. Therefore, it is necessary to use a More suitable high-performance self-compacting concrete to meet the needs. [0003] Self-compacting concrete has high requirements on workability and durability, and also has strict requirements on raw materials and mix ratio. The mix ratio design of self-compacting concrete needs to fully consider the fluidity, segregation resistance, self-filling and slurry properties of self-compacting concrete. The interrelationship and contradiction between volumetric dosage and volumetric stability. Most of the self-compacting concrete known now stud...

AI Technical Summary

Problems solved by technology

Most of the self-compacting concrete known now studies the main parameters such as water consumption, sand rate, fly ash, expansion agent, etc., but there is very little research on auxiliary ingredients, and the research on auxiliary materials is obviously missing. Therefore, a new type of self-compacting concrete is developed self-compacting concrete has been urgently needed