A kind of concrete block and its manufacturing method

Abstract

The invention provides a concrete block and a manufacturing method thereof. The manufacturing method comprises the following steps: selecting waste asphalt, crushing the waste asphalt into particles of 5-15 mm, performing washing with water and sun-curing on the waste asphalt, and then soaking the waste asphalt in a pretreatment solution. According to the manufacturing method provided by the invention, coconut diethanolamide, n-octyl alcohol and behenyl palmitate are used as main active ingredients, so that the defoaming efficiency of the concrete block is reduced sufficiently and brought into full play sufficiently; and with the use of span-80, the permeation of defoaming components in a foam liquid membrane can be well promoted, thereby destroying stability of the foam liquid membrane, and improving the defoaming rate.

Description

technical field [0001] The invention relates to a concrete block and a manufacturing method thereof, belonging to the field of building materials. Background technique [0002] Concrete is a multi-phase material, composed of three phases: solid, liquid and gas. A proper amount of small and independently distributed air bubbles in fresh concrete are similar to balls, which have a wetting and dispersing effect, which can improve the workability of concrete and effectively reduce the fresh concrete. Bleeding, avoid segregation, at the same time in hardened concrete, tiny independent air bubbles make the capillary inside hardened concrete become small, tortuous, scattered, reduce the permeation channel, which is beneficial to improve the frost resistance, compactness and impermeability of concrete; At present, the preparation process of defoamers used in the field of concrete in the market is relatively complicated, the conditions are high, and the cost is also high; the waste a...

AI Technical Summary

Problems solved by technology

[0002] Concrete is a multi-phase material, composed of three phases: solid, liquid and gas. A proper amount of small and independently distributed air bubbles in fresh concrete are similar to balls, which have a wetting and dispersing effect, which can improve the workability of concrete and effectively reduce the fresh concrete. Bleeding, avoid segregation, at the same time in hardened concrete, tiny independent air bubbles make the capillary inside hardened concrete become small, tortuous, scattered, reduce the permeation channel, which is beneficial to improve the frost resistance, compactness and impermeability of concrete; At present, the preparation process of defoamers used in the field of concrete in the market is relatively complicated, the conditions are high, and the cost is also high; the waste asphalt mixture after milling will be discarded, which will cause environmental pollution on the one hand, and waste a lot of waste on the other hand. Non-renewable resources, resulting in waste of resources and huge economic losses, how to use waste asphalt to turn waste into treasure, and how to meet product requirements is a difficult problem to be solved at present