Research on the engineering performance of concrete containing waste liquid crystal glass and volcanic ash in a hot spring environment

Abstract

The research aims to use industrial by-products such as slag, fly ash, and waste liquid crystal glass as concrete additives to reduce emissions and promote a circular economy. These efforts can contribute significantly to the development of a sustainable spa environment infrastructure. In the study, 40% and 60% high-content waste liquid crystal glass replaced the coarse aggregates, slag replaced part cement, fly ash replaced part of the sand, and according to specific ratios to make the concrete, then to evaluate the workability, hardening, and durability of concrete in hot spring water.The test results show that the workability of the concrete increases with the increase in substitution amount and that the slump increases from 61.1% to 66.7%. The concrete laying time increased by 7.56% but reduced the density by 9.79%. The compressive strength of concrete increases by 11.6%-13.41% and the velocity of the ultrasonic pulse is 4556–4717 m/s. Regarding durability, the chloride ion content is within the specified range between 0.014–0.031 kg/m3, and the surface resistance increases by about 9.95–10.93 times. In summary, we determined the optimal replacement amount that can effectively use the mixing ratio of waste liquid crystal glass, slag powder, and fly ash in concrete in the hot spring environment. This will improve waste reuse to cope with aggregate shortages increase the environmental pollution caused by cement manufacturing and achieve maximum environmental benefits.