Cement-based stone-like curb stone as well as preparation method and molding equipment thereof

Abstract

The invention relates to the technical field of artificial stones, in particular to a cement-based stone-like curb stone as well as a preparation method and molding equipment thereof. The cement-basedstone-like curb stone comprises the following components of, in percentage by weight, 14-16% of cement, 26-28% of yellow sand, 45-55% of gypsum and 6-8% of water. The preparation method comprises thefollowing steps of a) fully mixing, in percentage by weight, 14-16% of cement, 26-28% of yellow sand, 45-55% of gypsum and 6-8% of water to obtain a concrete mixed wet material; (b) placing the concrete mixed wet material into the molding equipment, closing a mold, wherein the closing pressure is 100-160 MPa, and performing negative pressure vacuum pumping on a cavity, wherein the vacuum degree value of the vacuum pumping is 0.8-1.0 MPa, the closing and pressure maintaining time and the vacuum pumping time are less than or equal to 5 minutes, and the concrete mixed wet material quickly loses90% of moisture and is initially solidified and formed into a curb stone semi-finished product; and (c) carrying out mold opening and demolding by the molding equipment, transferring the semi-finishedcurb stone product out of the mold for stacking to obtain a finished cement-based stone-like curb stone product. The molding equipment is adopted, the manufacturing efficiency is high, the strength of the curb stone is high, the production efficiency is high, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of artificial stone, in particular to a cement-based imitation stone curbstone, a preparation method and molding equipment thereof. Background technique [0002] With the rapid development of my country's urbanization process and the continuous improvement of people's living standards, the construction of municipal infrastructure is in full swing, and road construction, as the lifeline of urban traffic, has also entered a large-scale implementation process. The curb is an important part of the road ancillary facilities. Curb stones refer to the boundary stones used by blocky objects on the edge of the road surface. They are used to distinguish roadways, sidewalks, green spaces, isolation belts and other parts of the road on the road surface, so as to ensure the safety of pedestrians and vehicles and the edge of the road surface It can also play a role in beautifying the road and protecting the road surface....

AI Technical Summary

Problems solved by technology

There are several major problems in the existing preparation technology that have become the shackles that restrict the rapid prototyping of curbstones: 1. When the concrete enters the mold for molding, in order to ensure its certain fluidity to fill the entire cavity, it is necessary to add a large amount of water to dilute and solidify Although the large-pressure extrusion method is used to drain and exhaust the curb to make the curb compact and compact, it is difficult to dehydrate and clean. The residual water will fill the curb with voids, reduce the strength and performance, and shorten the service life; , The demoulding time is long. After the cement is injected into the mold, it needs to stand for 1-2 days before it can be demolded. After natural aging, it takes another 3-5 days. It takes 4 to 7 days for a roadside stone to be formed from production to use. The efficiency is extremely low, and the amount of production is greatly limited; 3. The molding of the roadside stone needs to be air-dried before it can be demoulded. Every time the cement is injected into the mold, it needs to be removed together with the mold and stored in a dry warehouse at room temperature. The production of stone needs to correspond to a pair of molds. For large-scale production, multiple sets of molds are required, and the cost of mold investment is very high.

Therefore, there are three major problems of poor quality, high cost and low efficiency in the existing preparation process of curbstones, which need to be solved urgently.

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