کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258459 503617 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design of eco-efficient grouts intended for soil nailing
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Design of eco-efficient grouts intended for soil nailing
چکیده انگلیسی

The work reported is a feasibility study to evaluate the pertinence of using metakaolin (MK) in grout intended for soil nailing. MK allows a strong decrease of CO2 emission compared to grouts containing cement only. The experimental program was divided into two steps: a first step to study the formulation parameters of the grouts by means of a mixture design plan, followed by an in situ program of pull-out tests to evaluate the performance of the grouts designed. The results show that metakaolin is compatible with this kind of application, since it improved the environmental balance of grouts by reducing the cement content. Moreover, its pozzolanic effect counteracted some of the cement dilution. The in situ pull-out tests highlighted the minimum performance levels necessary for the grout to fulfill its role of transferring stresses between soil and nail.


► A mixture design plan was used to evaluate the effect of metakaolin on cement grouts.
► Metakaolin grouts respected the technical constraints of soil nailing applications.
► Metakaolin allowed a significant reduction of the CO2 emission compared to CEM I.
► In situ pull-out tests showed that 5 MPa grouts are sufficient for soil nailing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 41, April 2013, Pages 857–867
نویسندگان
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