Durability of Portland Cement Concrete Surfaces Using Wood and Steel Forms for Casting
Article info
2000-08-14
2001-01-13
2001-01-13
117 - 132
Keywords
Abstract
Forms made of wood and steel in its different types are considered one of the widely used techniques in construction of Portland Cement Concrete structures. The effect of such forms on the physical and chemical properties of hardened Portland Cement Concrete (PCC) are under consideration relative to the durability of the exposed outer surfaces. This can be of great importance in structures exposed to weathering caused by either water-exposed structures or sever weathering of natural temperature cycles. In such structures, protective measures are used to insulate the hardened concrete against weathering. Such techniques are of no benefit if the chemical reaction between wood form and fresh concrete is already taking place. In other instances, high quality non-reactive ingredients are used to improve durability of Portland Cement Concrete. This is expected to deter deterioration of hardened cement surfaces, but casting is of concern in this case as well as the need for such measure. The type of interaction between wood forms and fresh concrete is a chemical reaction between acids which exists in the different types of wood and the ingredients of Portland Cement Concrete as well as a physical one in terms of the size of surface area exposed caused by the wood surface roughness.These articles may interest you also
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Durability of Portland Cement Concrete Surfaces Using Wood and Steel Forms for Casting
معلومات المقال
2000-08-14
2001-01-13
2001-01-13
117 - 132
الكلمات الإفتتاحية
الملخص
Forms made of wood and steel in its different types are considered one of the widely used techniques in construction of Portland Cement Concrete structures. The effect of such forms on the physical and chemical properties of hardened Portland Cement Concrete (PCC) are under consideration relative to the durability of the exposed outer surfaces. This can be of great importance in structures exposed to weathering caused by either water-exposed structures or sever weathering of natural temperature cycles. In such structures, protective measures are used to insulate the hardened concrete against weathering. Such techniques are of no benefit if the chemical reaction between wood form and fresh concrete is already taking place. In other instances, high quality non-reactive ingredients are used to improve durability of Portland Cement Concrete. This is expected to deter deterioration of hardened cement surfaces, but casting is of concern in this case as well as the need for such measure. The type of interaction between wood forms and fresh concrete is a chemical reaction between acids which exists in the different types of wood and the ingredients of Portland Cement Concrete as well as a physical one in terms of the size of surface area exposed caused by the wood surface roughness.These articles may interest you also
- Effect of Wind Speed and Air Temperature on the Durability of PCC Surfaces
- تأثير نوع التغطية للطوب المفرغ على قوة الضغط المحوري
- Comparative Analysis of Using Small Cylindrical Specimens for Compressive Strength of Portland Cement Concrete
- Polystyrene Lightweight Concrete (Polyconcrete)
- تأثير مصنع اسمنت المرقب على الغطاء النباتي بالمنطقة المجاورة له
- اثر استخدام فحم الحمضيات في العلف على أداء صيصان اللحم
- مراسلة قصيرة: استخدام وحدات مسبقة الصب في إنشاء القباب: قبة مسجد صلاح الدين الأيوبي في طولكرم – فلسطين
- السلوك الديناميكي للمباني الخرسانية المسلحة المحتوية على جدران
- دراسة نقدية لأراء بياجية حول اللغة
- دراسة خاصية انتشار الموجات الاستاتيكية المغناطيسية غير الخطية عبر طبقتين والأخرى من مادة الفريت
An-Najah National University
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