To study the influence of different mix proportions on fresh properties wet shotcrete, rheological and air content shotcrete with admixtures before pumping were measured. In addition, pressure drop along pipeline build-up thickness studied, relationship between pumpability sprayability was discussed. This paper attempts to reveal mechanism fluidity by means pictures. The results show that free ...

• 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...

This paper describes the relationship of forest soil dryness and antecedent rainfall with suspended sediment (SS) yield due to extreme rainfall events and how this relationship affects the survival of forest plants. Several phenomena contribute to this relationship: increasing evaporation (amount of water vapour discharged from soil) due to increasing air temperature, decreasing moisture conten...

Abstract—In this study, the effects of waste marbles as aggregate material on workability and hardened concrete characteristics of self compacting lightweight concrete are investigated. For this purpose, self compacting light weight concrete are produced by waste marble aggregates are replaced with fine aggregate at 5%, 7.5%, and 10% ratios. Fresh concrete properties, slump flow, T50 time, V fu...

Abstrack The objectives of the study are: (1) Determining division grains (gradations) aggregate, (2) amount material in aggregate that passes sieve No. 200 by washing, (3) Checking weight contents fine as well mixture, (4) moisture content contained drying, (5) determining specific gravity bulk (bulk), dry saturated surface (SSD), apparent coarse/fine and absorption rate against water, (6) tes...

In this paper we report on the collection of fine (PM1) and ultrafine (PM0.1), or nanoparticulate, carbonaceous materials using thermophoretic precipitation onto silicon monoxide/formvar-coated 3 mm grids which were examined in the transmission electron microscope (TEM). We characterize and compare diesel particulate matter (DPM), tire particulate matter (TPM), wood burning particulate matter, ...

Abstract The combination effect of fine-metakaolin (FMK) and coal bottom ash (CBA) as cement fine aggregate replacement in seawater-concrete was investigated to reduce environmental issues such carbon emission, global warming, insufficient water resource. Optimum percentages 10%, 20% 30% determined Stage 1 through compression strength test. 2 involved testing on mixture with FMK obtained 20%, 3...