Matériaux et constructions
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Effect of different substitution of natural aggregate by recycled aggregate on performance characteristics of pervious concrete
Matériaux et constructions - - 2014
The objective of this research was to incorporate recycled aggregate into pervious concrete to create a very sustainable concrete product for many applications. The research methodology interested replacing natural aggregate with recycled aggregate in the pervious concrete production at 4 different replacement levels of 25, 50, 75 and 100 %, with two different water-to-cement ratios of 0.27 and 0....... hiện toàn bộ
Các thanh ghép dán cho kết cấu gỗ—Nghiên cứu thực nghiệm về hành vi mềm mại Dịch bởi AI
Matériaux et constructions - Tập 34 - Trang 228-234 - 2001
Một phương pháp thử nghiệm để xác định độ bền và đặc tính gãy của liên kết của các thanh ghép dán trong các kết cấu gỗ được trình bày. Kết quả thử nghiệm từ một loạt các thử nghiệm sử dụng phương pháp đề xuất cũng được cung cấp. Phương pháp thử nghiệm này cho phép ghi lại phản ứng toàn bộ về ứng suất và biến dạng của các mẫu thử nhỏ. Phản ứng này bao gồm hành vi mềm mại sau ứng suất cực đại, tức l...... hiện toàn bộ
#thanh ghép dán #kết cấu gỗ #độ bền #hành vi mềm mại #đánh giá gãy
The influence of supplementary cementing materials on water retaining characteristics of hydrated lime and cement mortars in masonry construction
Matériaux et constructions - Tập 47 - Trang 493-501 - 2013
The purpose of this paper is an investigation of the possible role of supplementary cementing materials (SCMs) on the water retaining ability of hydrated lime (CL90) and Portland cement (PC) mortars. Desorptivity (R) defines the water retaining ability of mortars in the freshly-mixed wet state. Transfer sorptivity (A) defines the ability of the substrate to withdraw water from the wet mix. The tim...... hiện toàn bộ
Paper of RILEM TC 282-CCL: mineralogical characterization methods for clay resources intended for use as supplementary cementitious material
Matériaux et constructions - Tập 55 - Trang 1-32 - 2022
To respond to the rapid introduction and development of calcined clays as supplementary cementitious material (SCM), the toolbox of characterization methods for cementitious materials requires extension to raw clay characterization. Borrowing concepts and methods developed in the field of clay mineralogy, this paper outlines the merits and limits of widely accessible characterization techniques fo...... hiện toàn bộ
Coupled effects of high temperature and strain rate on compressive properties of hybrid fiber UHTCC
Matériaux et constructions - Tập 52 - Trang 1-17 - 2019
This study investigates the combined effect of the strain rate and temperature on the compressive properties of hybrid fiber ultra high toughness cementitious composites (UHTCCs) using a Split Hopkinson pressure bar. Specimens were first heated to different exposure temperatures, e.g. ambient temperature, 200, 400, 500, 600 and 800 °C, and subsequently, cooled to ambient temperature. Thereafter, t...... hiện toàn bộ
Practical prediction of time-dependent deformations of concrete
Matériaux et constructions - Tập 12 - Trang 169-174 - 1979
The model for drying creep from Part III is here extended for the temperature effect. The basic, additive form of the double power law and the shrinkage-like term are preserved, but certain coefficients become temperature-dependent to reflect the acceleration of drying and of aging. Satisfactory agreement with test data is achieved.
Laboratory assessment of the contribution of aggressive to concrete chemical compounds to the degradation of Portland cement-based materials during anaerobic digestion
Matériaux et constructions - Tập 54 - Trang 1-20 - 2021
Anaerobic digestion allows renewable energy to be produced through the degradation of bio-waste. The process, which is of economic and ecological interest, is implemented industrially in concrete digesters. Bio-waste is a complex medium with a composition that can vary in time and space. It contains several chemical compounds, including volatile fatty acids, ammonium, and CO2, which are aggressive...... hiện toàn bộ
Finite element modelling of hardening concrete: application to the prediction of early age cracking for massive reinforced structures
Matériaux et constructions - Tập 44 - Trang 1821-1835 - 2011
This article presents finite element modelling to predict the early age cracking risk of concrete structures. It is a tool to help practitioners choose materials and construction techniques to reduce the risk of cracking. The proposed model uses original hydration modelling (allowing composed binder to be modelled and hydric consumption to be controlled) followed by a non-linear mechanical model o...... hiện toàn bộ
Development and properties of porous warm mix agent-loaded composite flame retardant and its suppressions on bituminous combustion and volatile release
Matériaux et constructions - - 2024
Due to the particularity of highway tunnel structure, traffic accidents are easy to cause severe fires on bituminous pavement. Fire leads to the thermal decomposition of bituminous pavement, resulting in very serious consequences. In this study, such flame retardants as expanded graphite, ferric hypophosphite, ammonium polyphosphate and zinc borate were mixed at a mixing ratio of 1:3:4 to prepare ...... hiện toàn bộ
Out-of-plane behaviour of infill masonry panels strengthened with composite materials
Matériaux et constructions - Tập 47 - Trang 2131-2145 - 2014
The performance of various composite materials applied to strengthen hollow masonry panels under out-of-plane actions is compared here. The strengthening solutions belong to three reinforcement Externally Bonded (EB) wet lay-up systems: (i) bidirectional composite meshes applied with inorganic matrices, i.e., Textile Reinforced Mortars (TRM); unidirectional composite textiles applied with (ii) ino...... hiện toàn bộ
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