This paper considers replication strategies for storage systems that aggregate the disks of many nodes spread over the Internet. Maintaining replication in such systems can be prohibitively expensive, since every transient network or host failure could potentially lead to copying a server’s worth of data over the Internet to maintain replication levels. The following insights in designing an ef...

The South African construction industry is currently faced with mounting waste and overflowing landfills. Consequently, the feasibility of using clay masonry rubble brick (CMRB) as a partial replacement for natural coarse aggregate in concrete was investigated. Three mixes were made water-to-binder (w/b) ratios 0.60. A control mix well containing 50% 100 % Andesite CMRB tested. compressive stre...

Abstract The distinct fiber addition to concrete can improve weak performance in tension. Due its higher performance, hybridization is becoming more and competitive. In this study, the hardened durability characteristics of performance-based reinforced with polypropylene, basalt hooked end steel fibers are investigated. Total 12 mixes prepared evaluate different concrete. influence (0.2, 0.25, ...

In this work, leftover foundry sand and vermiculite were used as partial replacements for fine coarse aggregates in hybrid fibre reinforced concrete (HFRC). The study also concentrated on HFRC mix percentage optimization to achieve desired attributes. By creating multiple mixtures with varied ratios of vermiculite. mechanical characteristics the assessed. Tests HFRC’s permeability, water absorp...

This study attempts to utilize cold-bonded fly ash based artificial lightweight aggregate (ALWA) and retrieved unground rice husk (URHA) as internal curing (IC) agents for improving performance of typical super-sulfaed cement (SSC) mortar fabricated with ternary mixture 85% slag, 10% gypsum, only 5% blended Portland (PCB). The ALWA partially replacing fine (FA) at four values 25, 50, 75, 100 vo...

In the pursuit of a sustainable environment, and facing threat continuous growth solid waste in Iraq, this study investigated impact using blowdown, carbon-sulfur byproduct material sulfur purification, as mineral filler on durability rutting resistance dense-graded asphalt mixtures Styrene-Butadiene-Styrene (SBS)-modified asphalt. Three different blowdown rates (4%, 5%, 6% by weight aggregate)...

This study aimed at investigating the durability characteristics of ambient-cured geopolymer concrete (GPC) developed using recycled coarse aggregate (RCA) and ultrafine slag (UFS). Two series mixes were prepared. Natural aggregates (NAs) replaced by RCA different volume levels 0, 25, 50 100% in both series. Meanwhile, UFS was added as a replacement fly ash varying 15, 30% first series, while u...

A significant problem associated with asphalt concrete mixtures is the lack of durability resulting from an inadequate asphalt cement content. Additional asphalt cement added to increase durability results in flushing, bleeding and a significant loss In stability. Fibers have been used in stone matrix asphalt and open-graded friction course pavements successfully throughout Europe to allow high...