Abstract
Traditional sound-absorbing materials have a number of disadvantages: low water resistance, low compressive and tensile strengths, low weather resistance, etc. Therefore, new sound-absorbing materials need to be developed with improved properties including the involvement of industrial byproducts. The influence of the grain-size composition of the rubber crumb from used car tires on the sound insulation of cement and gypsum composites was studied in the paper. The results of the study contribute to the creation of a structural material for the manufacture of sound-absorbing as well as load-bearing structures. The field of application of the developed materials is very extensive.
Highlights
Sound is a physical phenomenon generated by the oscillatory movements of medium particles
Traditional acoustic materials have a number of disadvantages: low water resistance; low compression and bending strength; high compressibility; and low weather resistance [4,5,6]
The slump flow decreases with the increase in amount of rubber crumb crumb of both grain compositions, but the rubber crumb of composition No 2 reduces the of both grain compositions, but the rubber crumb of composition No 2 reduces the slump slump flow to a lesser extent
Summary
Sound is a physical phenomenon generated by the oscillatory movements of medium particles. Sound-absorbing materials are used to protect residential areas from high-speed highways [1,2,3]. There is a need to develop new acoustic materials with the above-mentioned properties improved, including the involvement of natural materials [7,8,9], industrial byproducts and secondary resources [10,11,12,13]. This can be achieved by using cement and gypsum composites with appropriate structures and porosities [14,15,16]. The necessary porosity, namely porosity with interconnecting pores, can be created by using the rubber crumb from used car tires
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