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Effect of Bacillus cohnii on Some Physicomechanical and Microstructural Properties of Ordinary Portland Cement
المؤلفون المشاركون
Wachira, Jackson Muthengia
Wangui, Ngari Reginah
Karanja Thiong’o, Joseph
المصدر
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-09-27
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
Cement-made materials face durability and sustainability challenges.
This is majorly caused by the presence of cracks.
Cracking affects the mechanical strength of cement-based materials.
Microbiologically induced calcite precipitation (MICP) has been found to enhance compressive strength, thus enhancing on the mechanical and durability properties of these materials.
This paper presents the findings of a study conducted to investigate the effect of Bacillus cohnii on compressive strength development of OPC mortar prisms and the effect of Bacillus cohnii on cement setting time and soundness.
Microbial concentration of 1.0 × 107 cells·ml−1 was used.
Compressive strength tests analyses were carried out for each category of mortar prisms.
Compressive strength tests were carried out on the 2nd, 7th, 14th, 28th, 56th, and 90th day of curing in distilled water and microbial solutions.
All microbial mortars exhibited a greater compressive strength compared to the control with the highest observed at 90 days.
Highest percentage gain in compressive strength was observed at 90 days which is 28.3%.
Microstructural analysis was carried out using a scanning electron microscope (SEM) after 28 days of curing.
The results indicated the presence of calcium carbonate and more calcium silicate hydrate (CSH) deposits on the bacterial mortars.
The bacteria did not have an effect on cement soundness.
Setting time was significantly accelerated.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wangui, Ngari Reginah& Karanja Thiong’o, Joseph& Wachira, Jackson Muthengia. 2020. Effect of Bacillus cohnii on Some Physicomechanical and Microstructural Properties of Ordinary Portland Cement. Journal of Chemistry،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1182219
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wangui, Ngari Reginah…[et al.]. Effect of Bacillus cohnii on Some Physicomechanical and Microstructural Properties of Ordinary Portland Cement. Journal of Chemistry No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1182219
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wangui, Ngari Reginah& Karanja Thiong’o, Joseph& Wachira, Jackson Muthengia. Effect of Bacillus cohnii on Some Physicomechanical and Microstructural Properties of Ordinary Portland Cement. Journal of Chemistry. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1182219
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1182219
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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