Abstract New concrete often deteriorates performance, segregation, water secretion, and other phenomena ₒ Concrete workability pumpability are reduced, segregation resistance agents can effectively solve the problem, improve construction performance of fresh concrete. This study shows that acrylamide is 3.40%, AMPS 1.50%, H2O2 0.06%, suspension block 0.2%. The optimum best performing liquid age...

Abstract Ten concrete mixtures, using long and medium length hooked-end short wave-shaped steel fibers, were designed to experimentally investigate the effect of hybrid reinforcement on workability, drying shrinkage, mechanical properties fiber reinforced concrete. The fibers reduced workability shrinkage. Hybrid including fiber, can produce a synergistic compressive strength. For adopted mater...

The most common building material utilized worldwide is concrete. Concrete with higher compressive strength becoming more and in demand as the trend toward using it widely for high rise buildings. Experimental study of glass fiber (GF) reinforced concrete incorporating micro silica was investigated this study. prepared by M40 mix. GF 12 mm length aspect ratio 857 used. Four volume fractions 0%,...

Abstract This research assessed the rheological properties of aluminium dross in self-compacting concrete. Aluminium dross, solid waste from processing industry, was used as a partial replacement for cement development eco-friendly done bid to reduce cost management this track with ‘waste wealth’ initiative. In article, at 0, 4, 8, 12, 16 and 20% content. The test (workability) carried out acco...

• The interest of the built environment towards material conservation is hinged on reclaiming, recycling, and reuse available raw materials. Strength characterization iron filings glass particles as fine aggregate for lightweight concrete production. Determination optimum replacement level. This study comparatively investigated strength characteristics workability performance partial natural wi...

The addition of steel fiber to self-consolidating concrete (SCC) may considerably prolong cracking time and improve its deforming performance. Current studies mainly apply high content micro-steel fibers the mechanical performance SCC whilst assuring workability, however, there are still very few concerning influence a mixture with ordinary on SCC. Thus, this paper conducted experimental ordina...

In this study, high concentration wastewater from ready-mixed concrete plants was used to replace potable water as mixing of concrete, with replacement rates 0%, 25%, 50%, 75%, and 100%, by weight. The solid content the 12%. Five groups C20 mix proportions were designed. Different properties, including workability, compressive strength durability under freeze–thaw cycles, carbonization, drying ...

High-performance concrete (HPC) is usually produced using high quality materials. These high quality constituents drastically increase the initial cost of HPC, hence hindering its more widespread use. Therefore, the main goal of this research project was to produce a low cost enhanced performance concrete or even a low cost HPC, using low quality fly ash and locally available crushed aggregates...

The influence of carbonation on corrosion of reinforcement depends on the degree of ease of diffusion of CO2 through the concrete from its surface, also on environmental conditions, on the pore structure of concrete (cement, aggregates, and water (without additives)) and on the W / C, where a high ratio generates porous and permeable mortar and concrete (Duran C., 2003; Troconis O. et al., 2006...