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An Assessment of Ultrasonic Testing for Structural Masonry

Author BRIAN HOBBS and STUART J WRIGHT University of Sheffield Abstract This paper reports on a research programme aimed at assessing the possibility of using ultrasonic pulse velocity testing techniques […]

Development of a Net Area Strength Specification for Concrete Block

Author MARK PATAMIA National Concrete Producers’ Association, Canada Abstract The background to revisions in compressive strength specifications for concrete block is examined. The revisions have removed apparent anomalies, improved material […]

Towards a UK Performance Standard for Wall Ties

Author R. C. DE VEKEY Building Research Establishment, Garston. Abstract The paper covers some of the history of the development of wall ties and cavity walls in Britain, the research […]

The Performance of Mortar and Calcium Silicate Bricks in High Sulphate Environments

Author J. F. GOODWIN British Ceramic Research Limited Abstract The mechanism of sulphate attack in brickwork is reviewed and the occurrence and concentration of sulphates in soils and groundwater is […]

Natural Pozzolans For Structural Masonry

Author R. L. DAY*, A. HUIZER* and J. M. MORALES** *University of Calgary **University de San Carlos de Guatemala, Guatemala Abstract The high cost of building materials in Guatemala has […]

Lightweight Aggregate Concrete Blocks: Effects of Mix Proportions on Thermal Conductivity and Equilibrium Moisture Content

Author J.A. TINKER University of Leeds Abstract Concrete blocks incorporating lightweight aggregates are well known for their loadbearing and thermal insulating properties. Mix proportions are often changed to maintain or […]

The Microstructure of Selected Lightweight Aggregates and its Relevance to the Thermal Conductivity of Concrete Blocks

Author J. A. TINKER University of Leeds Abstract Using scanning electron microscopic analysis, the pore distribution and structure of several lightweight aggregates was investigated. Three structurally different types of aggregates […]

Sound Insulation Performance of Autoclaved Aerated Concrete

Author K. R. LUCKIN*. A. J. JONES** and G. ENGLEDOW*** *Celcon Limited **Acoustical Investigation & Research Organisation Ltd. ***Thermalite Limited Abstract Site data have demonstrated that low density, aerated concrete […]

A Composite Model for Masonry Shrinkage

Author J. J. BROOKS and P. R. BINGEL Abstract Shrinkage of various shapes of calcium silicate brickwork and lightweight concrete blockwork is considered in terms of composite model theory. By […]

Moisture Expansion of Fletton Brickwork

Author J. J. BROOKS and P. R. B1NGEL Leeds Polytechnic Abstract One-year data are presented for horizontal and vertical moisture movements of unrestrained walls and piers built from two weeks […]

Creep Loss of Prestress in Post-Tensioned Brickwork Walls with Previous Stress History

Author D. LENCZNER and P. DAVIS University of Wales Institute of Science and Technology Abstract This paper discusses the loss of prestress in members which have been previously prestressed for […]

The Relaxation of Stress in Brickwork at Constant Strain

Author P. DAVIS and D. LENCZNER University of Wales Institute of Science and Technology Abstract In reinforced concrete framed buildings with brickwork panel infill axial stresses can build up within […]