Technical and economic feasibility of biosolids - amended brick production

الموضوعات

اقتصاد

الملخص

As stringent environmental control mandates are introduced and enforced, the traditional disposal routes of land application, land-filling, and incineration forprocessed biosolids will come under increasing pressure and may no longer be viable and cost-effective disposal outlets for sanitary engineers to capitalize on. This Masterthesisresearch investigates the technical viability of incorporating dehydrated biosolidsand sewage sludge ashes into concrete raw material mixtures to produce pre-cast bricksthat canbe utilized in general-purpose outdoor building of non-load bearing structures.Furthermore, the cost-cutting benefits of producing such sludge-amended bricksare quantified.The approach was toexperiment with the addition of various sludge quantitiesto concrete mixtures –(making use of both sun-dried biosolids and sewage sludge ashes) -and then to evaluate and analyze the corresponding physical properties of the concrete mix paste and of the produced concrete bricks –mainly those properties affecting structural integrity.Results showed that there is a generalinverse relationship between the amount of dried sludge or ashes added and the compressive strength development of the cured blocks. However, the addition of as much as 10% of biosolids’ashes to the raw ingredients of a concrete mix did not affect the general physical properties of concrete (i.e. the workability of the concrete mix and the compressive strength, water absorption, and density of the cured bricks). On the other hand, the addition of an equal quantity of sun-dried biosolidsdecreased the compressive strength of the cured concrete by about 20%-which can be attributed to the presence of the organic materials in the dried biosolids. Moreover, results showed that there is no significant change in the relative strengths of the tested concreteblocks when sludge is used in small quantities (i.e. 10% ashes or a combination of 2.5% dried biosolids and 7.5% ashes) as sand replacements in the concrete mixture.For concrete bricks’ manufacturers that utilize sand as a raw material ingredient in their production process, the incorporation of 10% sewage sludge ashes into concrete mixtures as a partial replacement for sand can achieve the highest possible monetary savings

روابط وملفات

التعريف والنوع

رقم الوثيقة

0baa7bfd-a5c6-4daf-ac61-d44afc364fe7

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

57957_1.pdf

بيانات النشر

ترجمة العنوان

الجدوى الفنية والاقتصادية لصناعة الطوب الاسمنتي المعزز بالحمأة

ألقاب المؤلفين

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اللغة

English

المصدر والدورية

اسم المصدر

Technical and economic feasibility of biosolids - amended brick production

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

راشد الساعد

الإعداد

جورج يروسيس

الاقتباسات الببليوغرافية