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Chloride Ingress in Chemically Activated Calcined Clay-Based Cement
المؤلفون المشاركون
Wachira, Jackson Muthengia
Thiong’o, Joseph Karanja
Marangu, Joseph Mwiti
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-05-02
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
Chloride-laden environments pose serious durability concerns in cement based materials.
This paper presents the findings of chloride ingress in chemically activated calcined Clay-Ordinary Portland Cement blended mortars.
Results are also presented for compressive strength development and porosity tests.
Sampled clays were incinerated at a temperature of 800°C for 4 hours.
The resultant calcined clay was blended with Ordinary Portland Cement (OPC) at replacement level of 35% by mass of OPC to make test cement labeled PCC35.
Mortar prisms measuring 40 mm × 40 mm × 160 mm were cast using PCC35 with 0.5 M Na2SO4 solution as a chemical activator instead of water.
Compressive strength was determined at 28th day of curing.
As a control, OPC, Portland Pozzolana Cement (PPC), and PCC35 were similarly investigated without use of activator.
After the 28th day of curing, mortar specimens were subjected to accelerated chloride ingress, porosity, compressive strength tests, and chloride profiling.
Subsequently, apparent diffusion coefficients (Dapp) were estimated from solutions to Fick’s second law of diffusion.
Compressive strength increased after exposure to the chloride rich media in all cement categories.
Chemically activated PCC35 exhibited higher compressive strength compared to nonactivated PCC35.
However, chemically activated PCC35 had the least gain in compressive strength, lower porosity, and lower chloride ingress in terms of Dapp, compared to OPC, PPC, and nonactivated PCC35.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Marangu, Joseph Mwiti& Thiong’o, Joseph Karanja& Wachira, Jackson Muthengia. 2018. Chloride Ingress in Chemically Activated Calcined Clay-Based Cement. Journal of Chemistry،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1182135
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Marangu, Joseph Mwiti…[et al.]. Chloride Ingress in Chemically Activated Calcined Clay-Based Cement. Journal of Chemistry No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1182135
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Marangu, Joseph Mwiti& Thiong’o, Joseph Karanja& Wachira, Jackson Muthengia. Chloride Ingress in Chemically Activated Calcined Clay-Based Cement. Journal of Chemistry. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1182135
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1182135
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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