Author R. LOVEGROVE Building Research Establishment Abstract Wallette tests on brickwork show that the relationship between strength and thickness does not follow the square-law implicitly assumed by BS5628:Part 1. Finite Element analysis of various bonds shows that...
Author R. C. DE VEKEY Building Research Establishment Abstract BS5628:Part 2 covering the design of reinforced and prestressed masonry allows the use of concrete and grout infill in small prismatic voids in concrete or brick masonry as a means of protecting carbon...
Author N. A. ROUMANI and M. E. PHIPPS University of Manchester Institute of Science and Technology Abstract An unbonded prestressed brickwork I or T section member fails in shear after the formation of diagonal cracks in the web. When these cracks form the member may...
Author T. G. GARWOOD Bolton Institute of Higher Education Abstract Two series of brickwork beams were tested. Each series consisted of four beams with varying degrees of prestress and at least one conventionally reinforced beam having the same flexural capacity. A...
Author PROFESSOR F. SAWKO Sultan Qabos University, Oman. Abstract A method of rehabilitation is described, designed to preserve the external appearance of masonry arch bridges while enhancing their load carrying capacity. The procedure consists of removal of...
Author K. FISHER*, B. A. HASELTINE** H. R. HODGKINSON*** and J. N. TUTT *Redland Bricks Limited **Jenkins & Potter ***British Ceramic Research Limited Abstract The paper gives results of 14 tests to examine the strength and mode of failure of unreinforced flat...
Author JAGDISH T. D0D1A and COLIN ANDERSON South Bank Polytechnic. London Abstract The paper discusses existing guidance in codes of practice on the provision of wall lies for cavity walls subjected to lateral loading and refers to the new BS DDI40. Finite element...
Author K. KIRTSCHIG and W.-R. METJE University of Hannover, Federal Republic of Germany Abstract Chases and recesses reduce the strength of masonry, by how much is not sufficiently known. Tests have enabled the authors to determine the extent of different influences...
Author M. H. MALEK and A. W. HENDRY University of Edinburgh Abstract The state of stress immediately under a concentrated load is one of biaxial compression, and as a result, the masonry can withstand a contact stress in excess of its uni-axial compressive strength....
Author S. K. ARORA Building Research Establishment, Garslon Abstract While apparently taking into account both the position of a concentrated load and its area in relation to wall area, the clauses in BS562S:Parl 1 are inconsistent and do not model the behaviour...
Author M. R. A. KHALIL*. N. G. SHRIVE** and P. AMENY** *University of British Columbia, and **University of Calgary Abstract Three-dimensional finite element analysis has been used to determine the stress distribution in walls constructed of 190 x 90 x 390 mm two-hole...
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 for the evaluation of both new and existing masonry structures....
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 utilization and...
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 which has established the performance requirements and characteristics of wall ties...
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 considered. Calcium silicate bricks are shown to be resistant to...
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 resulted in housing prices which are beyond the reach of the majority of the...
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 alter block strength properties with little...
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 were incorporated into lightweight...
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 can provide satisfactory sound insulation...
