All-solid-waste pavement concrete utilizing steel slag in large proportion and preparation method thereof

Abstract

The invention provides all-solid-waste pavement concrete utilizing steel slag in a large proportion and a preparation method thereof. The preparation method comprises the following steps of: firstly,uniformly mixing 75%-90% by mass of slag powder and 10%-25% by mass of ground industrial byproduct gypsum to prepare a cementing material; mixing 10%-25% by mass of the cementing material, 13%-42.5% by mass of converter steel slag coarse aggregate with the particle size of 5-25mm and 32.5%-68% by mass of converter steel slag fine aggregate with the particle size of less than 5mm; and then adding 3%-12.5% by mass of water and 0.1%-0.75% by mass of a water reducing agent, and uniformly stirring to obtain the all-solid-waste pavement concrete. The method is based on the double salt effect of various solid wastes, the all-solid-waste concrete is prepared by combining dual synergistic optimization of grain size fraction and activity, the problems of low activity and poor stability when the converter steel slag is applied to concrete are solved, the steel slag mixing amount in all-solid-waste concrete is remarkably increased, the prepared pavement concrete has good compressive strength, theproduction cost of the concrete is reduced, the resource utilization efficiency is improved, the stacking condition of the steel slag is relieved, and obvious economic and environmental benefits are achieved.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More

AI Technical Summary

Benefits of technology

In this patented method, it involves preparing concrete aggregates using converged iron slags (CFS). By combining these materials together they create stronger structures without requiring expensive raw material or complicated processes like grinding them down beforehand. These improved properties make CSFs useful in construction applications where durability, impact resistance, abrasion resistance are important factors. Additionally, there may also include other technical features related to improving their performance over time through different methods mentioned earlier. Overall, this technology allows us to produce high quality concreting products while reducing excessive resources usage and minimizing greenhouse gas emissions during manufacturing process.

Problems solved by technology

The technical problem addressed in this Patented Technological Problem relating to metal recycling processes involving producing useful metals from scrap residues generated during manufacturing activities such as demolition operations and civil works. Current methods involve disposing these wastes without effective reuse options like beneficial effects on soil quality improvement, greenhouse gas reduction measures, and increasing costs associated therewith.

Images