The Experts below are selected from a list of 5451 Experts worldwide ranked by ideXlab platform
Dexin Ding - One of the best experts on this subject based on the ideXlab platform.
-
an investigation on physical mechanical leaching and radiation shielding behaviors of barite concrete containing recycled cathode ray tube funnel Glass Aggregate
Construction and Building Materials, 2019Co-Authors: Hualiang Liu, Jianjun Shi, Dexin DingAbstract:Abstract In order to explore the feasibility of using hazardous waste cathode ray tube (CRT) funnel Glass to replace high density mineral Aggregates in the radiation shielding concrete, various barite concrete samples were prepared with portland cement, ground funnel Glass sand as the substitute for barite Aggregates, and fly ash as mineral admixtures, and the rates of funnel Glass for fine and coarse (5–10 mm) barite Aggregate were 25%, 50%, 75%, 100% and 10%, 20%, 30%, respectively. The work performance, mechanical properties, dry shrinkage, alkali-silica reaction (ASR) expansion and lead leaching were investigated, and the γ-ray attenuation coefficients were obtained by experiment, XCOM program and MCNP code. The results show that the slump, ASR expansion and lead leaching of the concrete increase while its apparent density, mechanical properties, dry shrinkage, and γ-ray shielding properties decrease with the increase of the rate of funnel Glass. Adding fly ash to the concrete can inhibit the leaching of Pb, and reduce the ASR expansion. The concrete samples with 25–50% fine funnel Glass sand or 10–20% 5–10 mm coarse Aggregate have good performances. The results show that it’s efficient, economical and environmental-benign to use funnel Glass to produce the high density radiation shielding concrete.
Hualiang Liu - One of the best experts on this subject based on the ideXlab platform.
-
an investigation on physical mechanical leaching and radiation shielding behaviors of barite concrete containing recycled cathode ray tube funnel Glass Aggregate
Construction and Building Materials, 2019Co-Authors: Hualiang Liu, Jianjun Shi, Dexin DingAbstract:Abstract In order to explore the feasibility of using hazardous waste cathode ray tube (CRT) funnel Glass to replace high density mineral Aggregates in the radiation shielding concrete, various barite concrete samples were prepared with portland cement, ground funnel Glass sand as the substitute for barite Aggregates, and fly ash as mineral admixtures, and the rates of funnel Glass for fine and coarse (5–10 mm) barite Aggregate were 25%, 50%, 75%, 100% and 10%, 20%, 30%, respectively. The work performance, mechanical properties, dry shrinkage, alkali-silica reaction (ASR) expansion and lead leaching were investigated, and the γ-ray attenuation coefficients were obtained by experiment, XCOM program and MCNP code. The results show that the slump, ASR expansion and lead leaching of the concrete increase while its apparent density, mechanical properties, dry shrinkage, and γ-ray shielding properties decrease with the increase of the rate of funnel Glass. Adding fly ash to the concrete can inhibit the leaching of Pb, and reduce the ASR expansion. The concrete samples with 25–50% fine funnel Glass sand or 10–20% 5–10 mm coarse Aggregate have good performances. The results show that it’s efficient, economical and environmental-benign to use funnel Glass to produce the high density radiation shielding concrete.
Jianjun Shi - One of the best experts on this subject based on the ideXlab platform.
-
an investigation on physical mechanical leaching and radiation shielding behaviors of barite concrete containing recycled cathode ray tube funnel Glass Aggregate
Construction and Building Materials, 2019Co-Authors: Hualiang Liu, Jianjun Shi, Dexin DingAbstract:Abstract In order to explore the feasibility of using hazardous waste cathode ray tube (CRT) funnel Glass to replace high density mineral Aggregates in the radiation shielding concrete, various barite concrete samples were prepared with portland cement, ground funnel Glass sand as the substitute for barite Aggregates, and fly ash as mineral admixtures, and the rates of funnel Glass for fine and coarse (5–10 mm) barite Aggregate were 25%, 50%, 75%, 100% and 10%, 20%, 30%, respectively. The work performance, mechanical properties, dry shrinkage, alkali-silica reaction (ASR) expansion and lead leaching were investigated, and the γ-ray attenuation coefficients were obtained by experiment, XCOM program and MCNP code. The results show that the slump, ASR expansion and lead leaching of the concrete increase while its apparent density, mechanical properties, dry shrinkage, and γ-ray shielding properties decrease with the increase of the rate of funnel Glass. Adding fly ash to the concrete can inhibit the leaching of Pb, and reduce the ASR expansion. The concrete samples with 25–50% fine funnel Glass sand or 10–20% 5–10 mm coarse Aggregate have good performances. The results show that it’s efficient, economical and environmental-benign to use funnel Glass to produce the high density radiation shielding concrete.
Victor Jimenezbayarri - One of the best experts on this subject based on the ideXlab platform.
-
physical mechanical behaviour and transformations at high temperature in a cement mortar with waste Glass as Aggregate
Journal of building engineering, 2020Co-Authors: Vicente Floresales, J M Alducinochoa, J J Martindelrio, Marta Torresgonzalez, Victor JimenezbayarriAbstract:Abstract The replacement of natural Aggregates with different recycled materials in mortars and concretes has fostered significant progress in the construction sector, thus reducing the need to extract virgin raw materials. The incorporation of household Glass waste in cement mortar was studied to determine its behaviour as a replacement for sand; this paper studies its mechanical properties at room temperature and after a 800 °C heating process. The results were evaluated using Student's t-test. Changes in thermal properties through the addition of Glass to mortars were also studied. Various proportions of ground Glass were used to replace the Aggregate. The resistance values presented statistically significant differences. Mortars with ground Glass Aggregate also showed a clear improvement in the thermal conductivity coefficient and thermal diffusivity, reflecting a positive behaviour in relation to their thermal response and insulation capacity. Internal mortar structures were not affected by the incorporation of ground Glass.
Seungbum Park - One of the best experts on this subject based on the ideXlab platform.
-
studies on mechanical properties of concrete containing waste Glass Aggregate
Cement and Concrete Research, 2004Co-Authors: Seungbum ParkAbstract:Quantities of waste Glass have been on the rise in recent years due to an increase in industrialization and the rapid improvement in the standard of living. Unfortunately, the majority of waste Glass is not being recycled but rather abandoned, and is therefore the cause of certain serious problems such as the waste of natural resources and environmental pollution. For these reasons, this study has been conducted through basic experimental research in order to analyze the possibilities of recycling waste Glasses (crushed waste Glasses from Korea such as amber, emerald green, flint, and mixed Glass) as fine Aggregates for concrete. Test results of fresh concrete show that both slump and compacting factors are decreased due to angular grain shape and that air content is increased due to the involvement of numerous small-sized particles that are found in waste Glasses. In addition the compressive, tensile and flexural strengths of concrete have been shown to decrease when the content of waste Glass is increased. In conclusion, the results of this study indicate that emerald green waste Glass when used below 30% in mixing concrete is practical along with usage of 10% SBR latex. In addition, the content of waste Glasses below 30% is practical along with usage of a pertinent admixture that is necessary to obtain workability and air content.