Concrete building support component and preparation technology thereof

Abstract

The invention provides a concrete building support component and a preparation technology thereof and belongs to the technical field of building support parts. The concrete building support component is characterized by comprising the following raw materials in parts by weight: 100 parts of cement, 460-600 parts of stone chips and 42-70 parts of water, wherein the ratio of the stone chips and water is 1 to 0.09-0.12; the stone chips comprise the stone chips different in particle diameters D by the following quality percentage: stone chips with particle diameters equal to or larger than 0.1 cm account for 30-60% of the total quantity of the stone chips; stone chips with particle diameters within the range of being larger than 0.1 cm and equal to or less than 0.3 cm account for 25-55% of the total quantity of the stone chips; stone chips with particle diameters within the range of being larger than 0.3 cm and equal to or smaller than 0.5 cm account for 10-18% of the total quantity of the stone chips. The preparation technology for the concrete building support component adopts side molded steel grooves. Moreover, after 1-4 seconds of pressing, demolding and maintenance are carried out immediately. The concrete building support component is short in maintenance time, high in strength at the initial stage and is adapted to the concrete of the building; the technological process is convenient and fast; the concrete building support component is firm and is not prone to looseness; the preparation construction period is short; the utilization is convenient.

Description

technical field [0001] The invention relates to a concrete building support member and a preparation process thereof, belonging to the technical field of steel frame support structures for buildings. Background technique [0002] During the construction of reinforced concrete building structures, it is necessary to bind the steel frame before pouring the concrete. Whether it is a horizontal steel frame or a vertical wall steel frame, it is necessary to add a building support member between the formwork and the steel bar to determine the thickness of the concrete member's protective layer and ensure that the bottom of the steel frame is at the same height. Inconsistent specifications of building support components will lead to exposed reinforcement. [0003] At present, the raw materials of concrete building support components are mainly cement and sand, and some concrete building support components use stone chips instead of part of sand as the raw materials of concrete bui...

AI Technical Summary

Problems solved by technology

But the inventor has found in practice that there are many problems in the process of preparing concrete building support components by using stone chips to completely replace sand: 1. The preparation cycle of concrete building support components is long, and the maintenance time required after pressing is long. It takes about 14 days under the condition of brick curing; 2. The strength of concrete building support components is low, and it is easy to cause damage or cracking during the process of steel bar laying and maintenance. It is troublesome to replace the building support components after the steel frame is tied; 3. Concrete buildings The supporting member only considers the height standard requirements when laying the mat, and does not pay attention to the bonding strength between the building supporting member and the building supporting member after the concrete is poured; Environmental influences can easily cause concrete building support components to fall off, and the detached building support components under the same steel bar interact with each other, causing large-scale cracks on the contact surface; moisture in the air penetrates into the surface of the steel bar from the gap, causing electrochemical corrosion of the steel bar, and the corroded steel bar It will expand the volume to further damage the concrete structure and shorten the service life of the building; 5. The pressing process of the concrete building support components adopts frontal pressing, that is, pressing down from the side where the steel bar groove exists to form the steel bar groove; because the concrete between different batches The fluidity gap or / and the pressure of different pressing tools are different, so that the distance between the bottom of the reinforcement groove of the concrete building support member and the bottom surface of the building support member body is not uniform, and the reinforcement surface is uneven when laying the reinforcement