کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4913258 1428763 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The long term engineering properties of cementless building block work containing large volume of wood ash and coal fly ash
ترجمه فارسی عنوان
ویژگی های مهندسی بلند مدت کارخانه ساختمانی بدون سیمان شامل حجم زیادی از خاکستر های خاکستر و خاکستر ذغال سنگ است
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The reuse of pulverised fuel ash (PFA) and high calcium wood ash (HCWA) offers a two folds solution towards addressing the waste management problem and reduce the carbon footprint of concrete material. In order to enable sizeable application of such recycling method to produce block work for the construction industry, a comprehensive framework of knowledge on the mechanical strength performance of the concrete product containing large volume of PFA and HCWA needs to be established. Hence, it is the primary aim of the study to report a comprehensive assessment on the mechanical strength performance of concrete block work produced with the sole use of PFA and HCWA as the primary binder phase. The PFA and HCWA binder phase with small dosage of sodium silicate was characterized in terms of its standard consistency and setting times. Besides, a thorough assessment on the mechanical strength of block work produced with PFA-HCWA binder was conducted. Mechanical strength assessment covers the compressive strength, flexural strength and velocity of ultrasonic pulse propagation through the material. Besides, the fourier transformed infrared (FTIR) assessment was also performed to characterize the aluminosilicate bonds of the primary binder phase. The increasing mass ratio of HCWA was found to raise the water demand of the HCWA-PFA binder paste. Besides, the HCWA:PFA combination ratio of 50:50 and 40:60 has been found to exhibit the optimal flexural and compressive strength performance. It has also been established that the block work produced using HCWA:PFA combination ratio between 30:70 up to 90:10 meets the California Concrete Masonry Technical Committee requirement as class N concrete block work unit.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 143, 15 July 2017, Pages 522-536
نویسندگان
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