PRODUCTION PROCESS FOR HIGH-STRENGTH CONCRETE USING FLY ASH TO PARTIALLY REPLACE RIVER SAND AND BLAST FURNACE SLAG TO PARTIALLY REPLACE CEMENT

Abstract

This useful solution refers to a concrete production process using fly ash to partially replace river sand and blast furnace slag to partially replace cement, resulting in high-strength concrete suitable for various construction projects such as civil engineering, transportation infrastructure (bridges, roads), and hydraulic engineering. These concretes have very low chloride ion permeability and superior corrosion resistance to reinforcing steel due to chloride ion penetration, making them highly suitable for constructing bridges, roads, ports, etc., in marine environments. The process includes the following steps: Step 1 involves preparing the materials for the cement-concrete mixture, including crushed stone (D), river sand (C), PCB30 cement (X), superplasticizer (SD), fly ash (TB), and finely ground blast furnace slag (XL); Step 2 involves mixing the cement-concrete mixtures to obtain cement-concrete mixtures with a slump SN of 4-6 cm.