Study on Polypropylene Twisted Bundle Fiber Reinforced Lightweight Foamed Concrete

Recent industrial developments have focused more and on the applications of lightweight foamed concrete (LFC) in construction industry, having advantages over normal-strength concrete. LFC, however, has several drawbacks including brittleness, high porosity, excessive drying shrinkage, rapid cracking, low deformation resistance. Practical engineering typically chooses steel fiber or polymer to increase tensile fracture resistance LFC. The polypropylene twisted bundle (PTBF) was added LFC with varying weight fractions 0.0%, 0.5%, 1.0%, 1.5%, 2.0% 2.5%. Three densities were prepared, specifically 500 kg/m3, 700 kg/m3 900 kg/m3. mechanical durability properties PTBF-reinforced determined through compression, flexural, splitting tensile, flow table, water absorption tests. results show that addition PTBF significantly improves strength (compressive, strengths) reduces capacity porosity. optimal fraction between 1.5 for enhancement. inclusion increased ductility specimens remain intact from loading failure. original cracks inhibits development further