Size Effect Study of Sawdust Ash-Concrete under Compressive Load

Marthong, Comingstarful

doi:10.9790/1684-0152732

Cited by 5 publications

(1 citation statement)

References 8 publications

(11 reference statements)

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“…Введением рационального количества золы уноса в бетонную смесь можно улучшать ее удобоукладываемость и структуру затвердевшего бетона [3,4,5,14] Как известно [8], для обеспечения рационального зернового состава компонентов бетонной смеси, при которой обеспечивается наибольшая эффективность использования цемента, необходимо для трехкомпонентной смеси иметь соотношение крупной фракции к средней и к мелкой 52:23:25, а для двухкомпонентной -70:30. При этом средневзвешенный размер зерен близлежащих фракций должен отличаться примерно в десять раз -для трехкомпонентной смеси должен быть 100:10:1, а двухкомпонентной -10:1.…”

Section: проблемы утилизации вторичных ресурсовunclassified

Problems Utilization of Secondary Resources

M. I. NETESA

2015

bttrp

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Purpose. Analysis of known technological solutions utilization of secondary products of industrial-ness. Determination of the effective options that provide the necessary characteristics of the material with minimum consumption of cement. Methodology. Analysis of individual technologies of utilization of secondary products industry. Definition of rational grain composition of concrete mixes using recycled resources. Experimental verification of the effectiveness of the cement used in formulations with the secondary products of the industry. Findings. The analysis of the various techno-logical modes recycling industry by-products in concrete. The focus is on utilization of fly ash Dnieper TPP, which dumps continue to increase and significantly pollute the environment. For the main criterion effectiveness of the proposed technologies of recycling fly ash adopted Dnieper TPP efficiency ratio of cement, which is determined in relation of concrete strength achieved with the greatest possible number of recycling fly ash per unit mass of cement used. To increase the efficiency of cement concrete and solutions with ash removal Dnieper TPP implemented reasonable grain composition formula that is defined earlier. Consumption of each component was determined by analytical view of its grain structure and an average density that is provided at a ratio of dis-course of coarse fraction to the mean and petty to 52:23:25, and their size about 100: 10: 1 for three-way mixtures – concrete and the ratio of large to small 70-30, and their sizes of 10: 1 for two-component mixtures – fine-grained solutions or concrete. Originality. We got further development of scientific-WIDE bases of increase of efficiency of cement used in concrete for disposal of fly ash in them. Comparative tests of the strength of the hardened concrete with various secondary resources, modes of preparation and compaction of concrete mixtures modified by various plasticizing-forming additives are defined patterns and set rational modes and compositions of concrete with fly ash filler ash Dnieper TPP, which provide the highest efficiency factor of cement use and the required quality of the concrete. Practical value. The composition of concrete with secondary resources and modes of processing, providing significant amounts of fly ash utilization in the Dnieper TPP effective use of cement.

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Section: проблемы утилизации вторичных ресурсовunclassified