The Study Of The Lightweight Concrete Block’s Mechanism Of Action With Admixture’s Modified

The article preliminary study the mechanism of action of the different admixtureson the mechanical properties of lightweight concrete blocks by the large number ofexperiments and theoretical analysis, wish to provide a preliminary test data and thebasis of theoretical analysis on the applications of high performance compositeadmixtures and polymer modified cementitious materials of lightweight concretemasonry.This article first select a sodium sulfate （Na₂SO₄） as activator, research inspireagents on the activation of slag, fly ash in cement-based materials for complex mixedwith cementitious materials, and were Activators of mineral powder, powderashexcitation mechanism analysis. The results showed that, The Activators can inspireslag and fly ash pozzolanic activity to improve the cement-based materials’mechanical properties.Secondly, the paper selected four water-soluble organic polymers and the liquidpolymer: carboxymethyl cellulose （CMC）, hydroxyethyl cellulose （HEC）, polyvinylalcohol （PVA）, polyacrylamide （PAM）, and epoxy resin as admixtures to study theorganic polymer’s influence on the mechanical properties of the concrete block.Allselected three scale dosage of the mixing,they are0.3%,0.5%,0.8%of the gellingmaterials to study different polymers and different ash affect the mechanicalproperties of the concrete block.The results show that the mixing of the fourwater-soluble organic polymer, does not improve the flexural and compressivestrength of the concrete block, but showed a distinct weakening phenomenon. Thisweakening phenomenon is opposite to the conclusion of the inspection as well as thepublished art of the J. The mixing of epoxy resin is able to significantly improve themechanical properties of the concrete block, especially the flexural strength. And thebest content is0.3%of the cementitious material.In the modification of the EPS particles, we have chosen triethanolamine as themodifier to modified EPS particle surface and to improve small interfacial of Pastesand EPS particles adhesion, which is a result of the EPS particle hydrophobicityphenomenon, through directly to build the shell （dispersive mixing）, making the shellis not aging, and making the shell aging three different modification methods ofresearch to study EPS modification effect. Further, since the study of polymer, anepoxy resin of the improvement of the performance of concrete block, the paper also,mixing an epoxy resin after EPS modified, and the related mechanism study. Foundthat the modifier epoxy mixing well to further enhance EPS lightweight concretemasonry flexural and compressive strength.In Order to study organic polymeric modification effect on cementitious materialand modifier’s modification effect of EPS particles more accurately, from themicroscopic point of view, this subject on the basis of the relevant tests, obtained by scanning electron microscopy SEM photographs and microscopic analysis.As long as the duration of the test, material purchase different batch, toinconsistent test material （the second batch of material from the third chapter of theepoxy part）, has indicated in the text.