Preparation Of Ecological Concrete And Study On Freezing Resistance

Concrete, which have the largest consumption in the construction materials all over the world, should not only meet the demand of the public, but also pay attention to reduce the environment burden and create excellent coordination with environment. If it can accelerate nation circulating and resolve the ecology problem about protection of landscape and organisms environment, it will achieve the mankind continual development. Ecological concrete, which is manufactured by selecting rational materials and adopting special manufacture process, owns particular structure and surface character. Ecological concrete can reduce the environment burden, establish coordinate with biosphere and contribute on protection of environment, besides it meet the need of construction project.This paper has carried a set of experiments about concrete , through changing aggregate level, water cement ratio mixes, cement dosage, additives and its weight, and analyzed the relationship of these parameters and concrete function, which mainly includes coefficient of permeability, compressive strength and flexural strength. This paper has developed planted ecological concrete, which have the functions of penetration and protecting embankment. This ecological concrete belongs to porous concrete. It owns the abilities of natural water purification and the realization of plant growth, it can resist of anti-wave erosion, naturally drain off the flood, etc. Ecological concrete have the advantages of promoting the natural ecological environment perfectly and creating a city landscape.This paper designed and carried gas freeze-water thaw and water freeze-water thaw experiments about concrete durability, through simulating the actual circumstances. The change of dynamic modulus and quality in the freeze-thaw experiments were regarded as mainly analyzable targets. A set of system experiments and theoretical analysis shows: this ecological concrete can own rational hole structure(to the growth of plants), required strength(protect the slope), coefficient of permeability and durability, through adopting the rational directions for materials, selecting effective additives and a certain manufacture technological process.Depending on materials science and mechanics from injury, the reason and mechanism of the inorganic cement additives to concrete about freeze-thaw injury was explained. The damage of freeze-thaw cycle is a low fatigue process, in which...