Using Sewage-Sludge Ash as Filler in Bituminous Mixes

In this study, the behavior of bituminous mixes made with sewage sludge ash (SSA) as mineral filler was investigated. The behavior of these mixes was evaluated with the Cantabro, indirect tensile strength, water sensitivity, permanent deformation, and resilient modulus tests. The results show that SSA waste may be used in bituminous mixes at approximately 2–3% weight percent, maintaining adequate levels of cohesion and adhesion in the mixtures, which is comparable to mixtures made with active fillers such as hydrated lime and cement. Moreover, its use does not increase permanent deformations. However, the resilient modulus test gave slightly lower results for mixes made with SSA than for mixtures made with other fillers. It may be concluded that SSA waste may be used as a filler for bituminous mixes with better results than for mixes made with limestone fillers and with similar results for mixes made with other fillers such as hydrated lime and cement.

(Table 1) Composition of bituminous substances in sediments from the East Pacific Rise

Bitumoid contents in metalliferous sediments from axial parts of the East Pacific Rise (EPR) have been studied. Maximal concentrations of bitumoid matter and aromatic hydrocarbons have been found in the axial zones of the EPR as a result of hydrothermal processes and accumulation of endogenous matter in the sediments. Distribution of bitumoids and hydrocarbons coincides with deposition of ore minerals that indicates similarity of their sources.

10-year paint tests on weathered galvanized roofing /

Cover title.

Plastic and swelling properties of bituminous coking coals /

Includes index.

The ... report of the Residential Planning Project of the Department of Architecture, University of Illinois in cooperation with Bituminous Coal Research Inc., American Coke and Coal Chemicals Institute, Anthracite Institute.

Mode of access: Internet.

Bituminous coal and lignite; changing patterns in distribution and markets.

Mode of access: Internet.

Density, absorption and specific gravity tests of aggregates, bituminous mixtures and surfaces.

Mode of access: Internet.

Bituminous construction handbook.

Mode of access: Internet.

Bibliography on resistance of bituminous materials to deterioration caused by physical and chemical changes, annotated.

Mode of access: Internet.

Elastomeric roofing : a survey /

Issued July 1978.

Three year results on the performance of incinerator residue in a bituminous base /

Mode of access: Internet.

Surveys of grooves in 19 bituminous runways : final report /

Mode of access: Internet.

Stratigraphy of the bituminous coal field of Pennsylvania, Ohio and West Virginia,

Mode of access: Internet.

Laboratory evaluation of nondestructive methods to measure moisture in built-up roofing systems /

Item 241-A