Introduction: The increase in the volume of housing construction per capita per year to the level of the eco-nomically developed countries, the tasks of further progressive economic and social develop-ment of the country can be achieved with a corresponding increase in the production of con-struction materials. Materials and Methods: The solution of this task is largely connected with the development of resource- and energy-saving technologies for the production of efficient light construction materials based on wastes from various industries, in particular on wastes of plant origin, which contributes to the expansion of the production range of light, smooth granulated aggregates and light insulating concrete based on them with modifying additives that increase and improve the physical and technical characteristics of these materials. Results and Discussion: There are known technologies for producing light aggregates, mainly by firing. As energy re-sources became more expensive, there was an urgent need to develop easy-to-fill technology in a cost-effective manner. Conclusions: This paper considers a method for producing a light aggregate based on wood processing waste by granulation in a dish granule torus, which is a plate with an inclination angle of 45 0 and the number of mob companies 17-19 rev/min.

The paper deals with the issues of technology of grouting binders of silicate materials with the use of waste from the processing of petroleum bituminous rocks. The optimal compositions of grouting solutions with the use of waste from the processing of PBR were studied. The stability of the samples in aggressive environments of low-and high-base calcium hydrosilicates was studied. Technological processes for the production of grouting binders based on waste from the processing of PBR were justified and developed. Grouting compositions, characterized by high quality were developed. The positive effect of mixing and storage of the tested cement mixtures containing up to 50% of PBR waste with sulfate solutions of Na 2SO 4 and MgSO4 salts on the studied technical characteristics of the grouting solution and cement stone was established. A significant result is an improvement in the setting performance, an increase in strength without a significant deterioration in the adhesion of the cement stone to the drive pipe at a 5% salt concentration. The research results provide recommendations for the development of weighted grouting cements using technogenic materials containing an increased amount of iron oxide.

This paper discusses ways of recycling woodworking waste into light aggregate, optimal compositions of modified binders, as well as the mechanism of cement hydration in the presence of dispersion polymer powders. The methods of obtaining light aggregate based on woodworking waste by granulating in a disc granulator, which is a plate with a tilt angle of 450 and a number of turnovers of 17-19 rpm, are considered. Methods for obtaining granulated aggregate using sawdust of various fractions by the roasting free method are presented, optimal granulation modes are determined, and the main characteristics of the resulting aggregate and concrete based on them are studied. The optimal composition of granulated aggregate on modified cement provides 40 … 60 % of wood processing waste, 60 … 40 % of cement, 25 … 32 % of water and granulation time - 7 … 9 minutes. With this composition, the bulk density of the resulting aggregate corresponds to 850…750 kg/m3, the maximum strength of the granules when compressed in the cylinder is 3.5…4.1 MPa. The optimal content of the polymer additive in the binder is in the range of: mowilith - 0.4…0.7 % and tylose - 0.21…0.13 %. Granulated aggregate on modified aggregate has a frost resistance in the range of F35… F50. The choice of granulated aggregate on modified cement showed the effectiveness of the aggregate for light concretes. The strength characteristics of modified concrete of 25-75 brands were studied. The mechanical properties of modified concrete depending on the average density were studied. Concrete with an average density of 1000 kg/m3 has M25 brand, at 1200 kg/m3 - M35, at 1300 kg/m3 - M50, at 1500 kg/m3 - M75.