Strength characteristics of hydraulic lime mortared brickwork
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While some fields of civil engineering endeavour, and some materials, are heavily researched and published, the performance of construction materials and systems attracts far less interest and coverage
Construction Materials from the Institution of Civil Engineers is a recent addition to the suite of ICE Proceedings, and has been established with the aim of encouraging research and practical discussion in the field of performance of construction materials and systems.
Construction Materials addresses, among other subjects
applications of new materials
re-evaluation of traditional materials
innovative and recycled materials
novel applications of materials such as cement and concrete
The journal is edited by a distinguished editorial advisory panel and has a broad scope to embrace engineers working in both design and construction.
Construction Materials covers areas such as the procurement, specification, application, development, performance and evaluation of all materials used in construction and civil engineering. Coverage is also provided of the aspects which need to be taken into account when selecting materials: including embodied energy, environmental impact, service life, refurbishment, recycling and reuse.
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This paper presents experimental results from an ongoing study investigating the flexural bond strength, initial shear strength and compressive strength of brickwork built using natural hydraulic lime mortars. All tests were conducted in accordance with relevant standard procedures. Flexural bond strengths, with planes of failure parallel and perpendicular to bed joints, were determined by panel (wallette) tests. Bond wrench testing of stack-bonded prisms was also conducted to investigate further the material influences on flexural strength. The main parameters studied in this investigation were mortar mix design (binder : aggregate ratio; lime grade) and brick water absorption characteristics. The flexural bond strength and initial shear strength of the brickwork in general increased with mortar strength, but flexural bond strength was significantly impaired by both low and high brick water absorption. The bond wrench test was found to be a reliable, quick and easy, alternative test procedure to determine flexural strength (with plane of failure) parallel to the bed joints.
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