Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete

被引：4

作者：

Feitosa, Maria C. A. ^{[1
]}

Ferreira, Silvio R. M. ^{[1
,2
]}

Delgado, Joao M. P. Q. ^{[3
]}

Silva, Fernando A. N. ^{[1
]}

Oliveira, Joaquim T. R. ^{[1
]}

Oliveira, Pedro E. S. ^{[1
,2
]}

Azevedo, Antonio C. ^{[3
,4
]}

机构：

[1] Univ Catolica Pernambuco, Rua Principe 526, BR-50050900 Recife, PE, Brazil

[2] Univ Fed Pernambuco, Dept Engn Civil, Av Academ Helio Ramos S-N, BR-50740530 Recife, PE, Brazil

[3] Univ Porto, Dept Engn Civil, CONSTRUCT LFC, Rua Dr Roberto Frias S-N, P-4200465 Porto, Portugal

[4] Inst Fed Ciencias Educ & Tecnol Pernambuco IFPE, BR-50670430 Recife, PE, Brazil

来源：

JOURNAL OF COMPOSITES SCIENCE | 2023年 / 7卷 / 01期

关键词：

sewage sludge; concrete; fine aggregate replacement; civil construction industry; WASTE-WATER SLUDGE; MARINE CLAY; REUSE; ASH;

D O I：

10.3390/jcs7010021

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

This work analyzes the use of sewage sludge, generated in wastewater treatment plants, as an alternative for small aggregate to be used in concrete. Concrete cylindrical specimens with height h = 20 cm and diameter D = 10 cm were prepared using different amounts of sludge in the substitution of fine aggregates. Portland cement (CP II Z 32 RS cement) was used in all concrete mixtures, and two water-cement ratios and four cement-sludge mixtures were investigated. Compressive strength, sclerometer index, ultrasonic wave transmission velocity, and water absorption capillary tests were performed. The results showed that the use of sewage sludge as a replacement for fine aggregate to produce concrete exhibited a positive effect on both its compressive strength and its capillary water absorption. The results, even preliminary ones, demonstrated that the sludge could be used as an effective replacement for fine aggregate to produce concrete. The replacement of fine aggregate with 5% sewage sludge proved to be the optimal replacement value for the type of sewage sludge investigated.

引用

页数：11

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