Investigation and Preparation of the Plastering Mortar for Autoclaved Aerated Blocks Walls

The increase in the use of aerated concrete blocks (AAB) construction walls has increased demand for specialized plastering mortar, which should have characteristics high water retention, low absorption, thermal conductivity and toughness. This study scrutinized potential expanded vitrified small ball (EVSB) perlite as lightweight aggregates, beneficial effect a modifying additive based on mixture ethylene-vinyl acetate (EVA), hydroxypropyl methylcellulose (HPMC) fibers been proved. dry density, consistency, mechanical strength, pore micro morphology plaster mortar were evaluated. It is manifested by enhanced toughness, reduced optimized structure characteristics. relationship between mass absorption freeze-thaw cycle resistance established, shows that when 20%, exhibits better freeze resistance. After 25 tests, loss was 0.26% strength 1.41%. Through comparison test results, new composition provided: cement: fly ash: water: heavy calcium carbonate: quartz sand: EVSB: EVA: HPMC (100,000 mPa·s): fiber = 70: 30: 76: 12: 250: 24: 2: 0.3: 0.2.