International Journal of Concrete Structures and Materials
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Experimental Study and Numerical Simulation of Precast Shear Wall with Rabbet-Unbonded Horizontal Connection
International Journal of Concrete Structures and Materials - Tập 14 - Trang 1-16 - 2020
This paper reports the results of a seismic performance study of a precast shear wall with a new horizontal connection. The new connection is the rabbet-unbonded horizontal connection, which is composed of rabbets and unbonded rebar segments. The rabbets are used to improve the shear capacity and prevent slippage of the connection, and the unbonded rebar segments are used to improve the ductility ...... hiện toàn bộ
An Analytical Model for FRP Debonding in Strengthened RC Beams under Monotonic and Cyclic Loads
International Journal of Concrete Structures and Materials - Tập 10 - Trang 499-511 - 2016
Reinforced concrete (RC) beams strengthened by externally bonded reinforcement often fail by debonding. This paper presents an experimental and analytical study aimed at better understanding and modeling the fiber reinforced polymer (FRP) debonding failures in strengthened RC beams under monotonic and cyclic loads. In order to investigate the flexural behavior and failure modes of FRP-strengthened...... hiện toàn bộ
Effect of Silica Fume and Slag on Compressive Strength and Abrasion Resistance of HVFA Concrete
International Journal of Concrete Structures and Materials - Tập 8 - Trang 69-81 - 2014
In this study, portland cement (PC) has been partially replaced with a Class F fly ash (FA) at level of 70 % to produce high-volume FA (HVFA) concrete (F70). F70 was modified by replacing FA at levels of 10 and 20 % with silica fume (SF) and ground granulated blast-furnace slag (GGBS) and their equally combinations. All HVFA concrete types were compared to PC concrete. After curing for 7, 28, 90 a...... hiện toàn bộ
AHP-Based Evaluation Model for Optimal Selection Process of Patching Materials for Concrete Repair: Focused on Quantitative Requirements
International Journal of Concrete Structures and Materials - Tập 6 - Trang 87-100 - 2012
The process of selecting a repair material is a typical one of multi-criteria decision-making (MCDM) problems. In this study Analytical Hierarch Process was applied to solve this MCDM problem. Many factors affecting a process to select an optimal repair material can be classified into quantitative and qualitative requirements and this study handled only quantitative items. Quantitative requirement...... hiện toàn bộ
Strength Calculation of Short Concrete-filled Steel Tube Columns
International Journal of Concrete Structures and Materials - Tập 12 - Trang 1-11 - 2018
The aim of this work is to propose a technique to calculate the strength of short concrete-filled steel tube columns under the short-term action of a compressive load, based on the phenomenological approach and the theoretical positions of reinforced concrete mechanics. The main dependencies that allow the realization of the deformation calculation model in practice are considered. A distinctive f...... hiện toàn bộ
Low Carbon Concrete Prepared with Scattering-Filling Coarse Aggregate Process
International Journal of Concrete Structures and Materials - Tập 8 - Trang 309-313 - 2014
The volume fraction of the coarse aggregate in the conventional plastic concrete is controlled relatively low to ensure a required workability. In this paper, a new type of coarse aggregate interlocking concrete with strength ranging from C30 to C80 was prepared with scattering-filling aggregate process. The strength of concrete prepared with this method increases obviously whereas the shrinkage d...... hiện toàn bộ
Experimental Study on Effect of Recycled Reinforced Concrete Waste on Mechanical Properties and Structural behaviour of the Sandy Soil
International Journal of Concrete Structures and Materials - Tập 17 - Trang 1-26 - 2023
In recent years, constructing natural aggregates as a base layer for the roads has increased. Natural resources will run out as long as human consumption of them continues. Recycled concrete aggregate (RC) has thus emerged as a substitute material for the building of road base layers. Additionally, RC can be utilized to create interior city highways. The base layer for roads must have sufficient s...... hiện toàn bộ
Analytical Performance Assessment of Deteriorated Prestressed Concrete Beams
International Journal of Concrete Structures and Materials - Tập 17 - Trang 1-12 - 2023
In this paper, a new approach is developed to numerically evaluate the structural performance of deteriorated prestressed concrete beams using the finite element analysis application RCAHEST (Reinforced Concrete Analysis in Higher Evaluation System Technology). A prestressing steel element was modified to represent the interaction between deteriorated concrete and prestressing steel. Considering t...... hiện toàn bộ
Thí nghiệm kéo và mô phỏng số về đặc tính cơ học của loại thép HRB400 có dạng cung nhẹ trong bê tông khối Dịch bởi AI
International Journal of Concrete Structures and Materials - Tập 17 - Trang 1-17 - 2023
Sự căng thẳng nhiệt trong công trình bê tông khối tương đối cao trong quá trình thi công, thường dẫn đến việc xuất hiện nứt do nhiệt. Để giải quyết vấn đề này, các khối bê tông thường được đặt bằng cách tạo ra các rãnh rộng. Việc kết nối các thanh thép bị cắt tại vị trí các rãnh rộng bằng cách hàn hoặc ép ống có nhiều nhược điểm. Để khắc phục vấn đề mất mát ứng lực do nhiệt, bài báo này đề xuất mộ...... hiện toàn bộ
#bê tông khối #ứng suất nhiệt #thanh thép HRB400 #mô phỏng số #đặc tính cơ học
Pull-out Strengths of GFRP-Concrete Bond Exposed to Applied Environmental Conditions
International Journal of Concrete Structures and Materials - - 2016
This paper presents results of an experimental investigation on the behaviour of bond between external glass fibre reinforced polymer reinforcement and concrete exposed to three different environmental conditions, namely, temperature cycles, wet–dry cycles and outdoor environment separately for extended durations. Single shear tests (pull-out test) were conducted to investigate bond strengths (pul...... hiện toàn bộ
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