Development Of Energy-saving Lightweight Polysty-Rene Concrete Block

In order to solve the energy crisis, the decrease in arable land and environmentalpollution, the issue of enlargement, our government to energy-saving, land and utilizingwaste as a basic national policy, and proposed the mandatory provisions of the masonrystructure of prohibitions and restrictions on the use of solid clay. To this end, thedevelopment and promotion of new concrete block wall materials and structures must facethe problem of the construction industry engineering and technical personnel.This topic use lightweight granular materials, organic polymers, industrial waste,cement, activator, additives and other materials, adjust the mixing ratio of the rawmaterials and additives and factory laboratory ordinary concrete block productiontechnology, developed an energy-saving benefits of waste, low cost, but also has goodphysical, mechanical, thermal performance of new wall materials. The block productiondoes not consume fuel, waste emissions, and energy-saving benefits of waste, economic,therefore in line with the current the masonry structures the direction of research anddevelopment direction, and has good development prospects.In this paper, the laboratory developed a small test of lightweight polystyreneenergy-saving concrete block, the following conclusions by measuring the mechanicalproperties of the block:(1)Industrial waste fly ash, slag cement as a composite binder, can stimulate thepotential activity of activator sodium sulfate (Na2SO4), the composite binder flexural,compressive strength.(2)The water-soluble organic polymer carboxymethyl cellulose(CMC), hydroxyethylcellulose(HEC), polyvinyl alcohol(PVA), polyacrylamide(PAM) mixed as admixtures,concrete block will reduce the flexural and compressive strength of concrete block; thepolymer emulsion water-based epoxy incorporated as an admixture in concrete blockconcrete block flexural, compressive strength, epoxy resin content is about0.3%of thecementitious material can improve.(3)As a lightweight aggregate particles of polystyrene(EPS) instead of stones, canreduce the bulk density of the concrete block, but the bond strength between the surface ofthe EPS and cementitious materials the adhesive force is low, both difficult to combine, so,the formation of weak surface, modifier triethanolamine EPS Surface Modification andEPS surface parcel of inorganic cementitious materials can be a good solution to theproblem, and test using a dispersive mixing process(without making the shell), and thesecondary dispersion mixing process(no aging), the second mixing process(aging)isdispersed in three different molding methods, and found that the secondary dispersionmixing process(no aging)the better.(4)Fly ash, slag, cement composite cementitious materials; and admixtures addedwater-based epoxy resin, polystyrene particles through different molding methods forlightweight aggregate development of new types of polystyrene concrete blocksthe mechanical properties of wall materials application of a uniform technical specifications tomeet the requirements, is ideal for light energy concrete block.Analysis method used in this paper is built on a small scale in the laboratory on thebasis of Experimental study of the mechanical properties of the block, the new block canbe measured a variety of mechanical properties, but also for the promotion and applicationof this block andlaid the foundation of the post-structural performance, more experimentaland theoretical basis for product standards and technical regulations.