This paper deals with use of pond ash and RBI Grade 81 for improvement in CBR values of clayey soil and grade-III materials used for base course of flexible pavement. The pond ash is a thermal power plant waste and RBI Grade 81 is chemical soil stabilizer. The geotechnical properties like Maximum Dry Density (MDD), Optimum Moisture Content (OMC), Unconfined Compressive Strength (UCS), CBR value...

This paper presents the application of�fly ash�combining with microbes in concrete to reduce cement content.�A class F fly ash as replacementwas applied ratios of 20%, 30%, 40%, and 50% hydration heat. Microbes from bacterial consortium were filler increase compressive strength. The mix design SNI 03�2834�2000 was for a strength target 30 MPa. mechanical test carried out consisting tensile test...

The effect of storage time on some properties of groundnut shell briquette with 5, 10, 15 and 20% binder (cassava gel) was studied. The briquettes were prepared using a motorized briquetting machine. The moisture content, durability rating, water penetration, calorific value and the ash content were determined after every 30 days for 6 months. The results reveals that the moisture content of br...

Cattle diet can impact manure quality and quantity, but has minimal impact on methane production from anaerobic digestion of manure. Quality of manure, measured as organic matter (OM) content, does affect methane production and is largely impacted by the environment cattle are housed in and methods used to collect manure. In three anaerobic digestion trials, as the amount of ash contamination o...

This study characterized the determinants of carotid atherosclerosis in a large contemporary sample of current smokers. Associations between risk factors, carotid intima-media thickness (CIMT), and carotid plaque presence were determined by multivariable regression. Participants included 1504 current smokers (58% female) who were a median (interquartile range) of 44.7 (38-53) years old and smok...

Processing of pine wood chips in a pilot-scale downdraft gasifier generated a carbon-rich fly ash as a byproduct. Studies on biomass-derived fly ashes have generally focused on their direct characterisation, as generated, to develop options for utilisation or disposal. Analogous to studies on coal-derived fly ashes, strategies were applied here to assess the feasibility of isolating chars for v...

Fly ash and granulated blast furnace slag (GBFS) are major by-products of thermal and steel plants, respectively. These materials often cause disposal problems and environmental pollution. Detailed laboratory investigations were carried out on cement stabilized fly ash-(GBFS) mixes in order to find out its suitability for road embankments, and for base and sub-base courses of highway pavements....