توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Grouting of Precast–Monolithic Building Joints with Heated Concrete Mix
نویسنده(ها): ،
اطلاعات انتشار: World Applied Sciences Journal، بيست و سوم،شماره۱۲، ۲۰۱۳، سال
تعداد صفحات: ۵
The article shows the potentiality of precast–monolithic construction of residential and manufacturingbuildings in the state–of–the–art. The main principles of the working hypothesis are proved which provide uniform strength of a grouted joint and concrete of precast units: the combination of "old" concrete active surface treatment and joint concreting with heated mix. The article explains the techniques of laboratory research of "new" and "old" concrete adhesion in precast–monolithic joint specimens. The results of theshearing testing, tension in bending and compression strength of the specimens are given. The article reveals the essence of effects and processes in the joint when treatment of old concrete active surface is applied in combination with joint concreting with heated mix. The method of concrete mix heat and vibration treatment (CMHVT) as a variant of preliminary electric heating is described along with the operating principle of HVTCM plant and the obtained result: accelerated concrete strengthening (40–50% in 8 hours, 70–100% in a day); energyconsumption reduction (up to 50 kW·h\m3); concrete quality improvement. The process flow scheme of joint grouting with heated concrete mix is presented which provides speed of construction comparable to precast construction as well as reliability and durability of precast–monolithic buildings similar to those of monolithic buildings.
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