The Study Of Lightweight Aggregate (Ceramic)Concrete Performance

With the rapid economic development and tunnels to move constantly-updated technology, all countries have built deep tunnel construction, in which both suffered different degree temperature geothermal water (steam) problem. If there is a problem which high temperature in tunnel engineering, on the one hand it can deteriorating operating environment, lower labor productivity, and a serious threat to the safety of construction workers;on the other hand, it will affect the selection of construction materials and concrete durability.because of the resulting Additional lining cracking caused by thermal stress will seriously affect the stability of the tunnel.In view of this, the water board set up between the concrete lining and insulation materials, so cut off from the rock to spread the heat, the temperature inside the concrete stress reduction. In this paper, the actual working Cheng Darui Gaoligongshan railway tunnel heat damage to deal with new materials and new technology research relies on the use of Southwest Jiaotong University, Building Materials Testing Center laboratory equipment, the experimental requirements for the major raw materials-ceramic, according to the relevant norms for detection of various targets, and thus the basic properties of ceramic concrete-depth study, and then from the concrete and shotcrete lining both sides of the concrete compressive strength, tensile strength and other mechanical properties for study, adding the last of the shotcrete different additives and different curing conditions, a simple comparison of temperature and an overview of the durability of concrete. In addition, the software-assisted calculation of the force of the tunnel structure, a simple analysis.This paper shows that:Ceramic concrete is stable in hot environments, the latter part of the concrete harding.Fly ash, slag and other substances can be hydration secondily with Ca(OH)2,and CSH gel content increased, then enhancing the post strength of the concrete.Ceramic concrete can significantly reduce the weight of concrete structures in hot environments.Particle size of single ceramic is not conducive to improving the performance of concrete and concrete strength increases.