This paper reports the results of a study conducted to determine influence coarse aggregate type on workability, compressive strength, and flexural strength normal high concretes with target 28-day strengths 30 60 MPa two water/cement ratios 0.44 0.27. The were prepared using four types natural aggregates, namely diabase, calcareous, river gravel, basalt, maximum particle sizes 12.7 19.1 millim...

This paper studies the aggregate dynamics of durable and nondurable consumption under slow information diffusion (SID) due to noisy observations and learning within the permanent income framework. We show that SID can significantly improve the model’s predictions on the joint behavior of income, durable consumption, and nondurable consumption at the aggregate level. Specifically, we find that S...

â â â â  reza roshan [1] â  department of economics, university of sistan and baluchestan , iran â  mosayeb pahlavani â  department of economics, university of sistan and baluchestan, iran â  mohammad nabi shahyaki tash â  department of economics, university of sistan and baluchestan, iran â  â â â  abstract â  consumption is the principal feature of iran’s gross national production. therefor...

Barley has properties that can improve and maintain human health, but to upgrade the positive characteristics of grain, specific breeding programs are required. Consumption chemically protected food is unpopular and, therefore, genetic sources disease resistance most frequent diseases essential. The aim this contribution postulate genes for powdery mildew in spring barley varieties bred consump...

This paper presents a physical characterization for the recycling into new concretes of three comminuted concretes: C16/20 (“ordinary concrete”), C50/60 (“high strength and C70/85 (“very high concrete”). The top size crushed was 19.1 mm range 4.75 to mm. carried out with coarse aggregate liberation, be prepared concentrated in gravity concentration process. density distribution aggregate, cemen...

This paper presents the results of comprehensive laboratory work conducted for investigating mechanical and radiation attenuation characteristics heavyweight concrete produced with pyrite, chromium, magnetite aggregates normal weight concretes three different water/ cement (w/c) ratios. Various experiments were to determine compressive strengths, ultrasound transmission velocities, experimental...

This study compares the environmental impacts of blast furnace slag-, fly ash-, and metakaolin-based alkali-activated concretes with Portland cement (PC) using life cycle assessment methodology. The variability in production processes mix constituents across Europe uncertainty associated transportation distances are evaluated for both types concrete. recent data on soluble sodium silicates was ...