Book•
Foundation analysis and design
01 Jan 1968-
TL;DR: In this paper, Fondation de soutenagement et al. presented a reference record for Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08.
Abstract: Keywords: Fondation ; Mur de soutenement ; Pieux ; Capacite portante ; Ancrage ; Dimensionnement Reference Record created on 2004-09-07, modified on 2016-08-08
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TL;DR: In this paper, the possibility of utilizing the waste over burnt bricks abundantly available in most parts of Gwer-West Local Government Area of Benue State, particularly Naka, the Local Government capital, as coarse aggregates in structural concrete was studied.
Abstract: The research was conducted to study the possibility of utilizing the waste over burnt bricks abundantly available in most parts of Gwer-West Local Government Area of Benue State, particularly Naka, the Local Government capital, as coarse aggregates in structural concrete. Trial mixes were prepared using the crushed over burnt bricks known also as brick bats as coarse aggregates only, mixture of crushed over burnt bricks and river wash gravel as well as using river washed gravel from River Benue. Cubes of concrete were prepared and tested to study the compressive strength. The result indicate that the concrete having brick bats as aggregates may be termed as medium light weight concrete having a density between 2000-2200 kg/m3. To produce the same workability, the brick aggregates concrete requires greater proportion of water than the normal gravel aggregate concrete. Use of broken over burnt bricks as coarse aggregate for structural concrete is recommended when natural aggregate is not easily available, high strength of concrete is not required and the bearing capacity of the soil is low.
15 citations
Cites background from "Foundation analysis and design"
...The specific gravities of sand and gravel were within the values reported by Bowles [18]....
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TL;DR: In this article, a series of plate loading tests on a clay with various construction and demolition (CD) materials conducted in a large-scale model box and a numerical verification on the use of these material mixtures.
Abstract: This study presents a series results of plate loading tests on a clay with various construction and demolition (CD) materials conducted in a large-scale model box and a numerical verification on the use of these material mixtures. The tests have been applied to the clay with three different types of CD materials (concrete, asphalt, and brick) prepared in a reinforced concrete circular box with a diameter of 2.0 m and a depth of 1.5 m. The CD materials were added to the clay with a mix ratio of 10% by dry weight and then compacted at optimum water content (wopt) and corresponding maximum dry density (γdrymax). The testing results have indicated that the CD materials increased the ultimate bearing capacity of the clay with a range of 50–75%. Furthermore, a remarkable correlation between the results of plate loading tests and numerical simulations made by a commercial finite element software (Plaxis 2D) was observed for all mixtures tested.
15 citations
Patent•
05 Feb 2004
TL;DR: In this article, a method and apparatus for installation of a support pier for a structure comprises positioning a hollow tube apparatus (18) in a soil matrix (14) wherein the hollow tube has a hollow core (24) and is susceptible to lateral and longitudinal movement, removing soil from the hollow core and then filling that core with an aggregate (25) followed by raising and lowering of the shallow hollow tube by a bottom mechanical device (30), in a manner which compacts the aggregate and also applies lateral forces to the aggregate against the walls of the cavity in the soil matrix,
Abstract: A method and apparatus for installation of a support pier for a structure comprises positioning a hollow tube apparatus (18) in a soil matrix (14) wherein the hollow tube apparatus (18) has a hollow core (24) and is susceptible to lateral and longitudinal movement, removing soil from the hollow core (24) and then filling that core with an aggregate (25) followed by raising and lowering of the hollow tube apparatus (18) by a bottom mechanical device (30) in a manner which compacts the aggregate (25) and also applies lateral forces to the aggregate against the walls of the cavity (14) in the soil matrix, pushing a portion of the aggregate (25) into the soil matrix.
15 citations
01 Jan 2006
TL;DR: In this paper, the authors examined a procedure to utilize clinker bricks in concrete and reproduce concrete bricks, and further researches were conducted to increase the quality of concrete produced with crushed bricks.
Abstract: During the last decades, in most industry countries, a large number of old buildings has been demolished and million tons of construction demolition waste have been produced. Demolition waste around the cities not only is a serious threat to the environment and underground water sanitation, but results in unpleasant landscapes. At present approximately 5% of bricks taken from demolition sites are being separated and recycled, while the proportion of concrete being recycled is up around 90%. This low rate of brick recycling is due to a lack of research into the performance of crushed brick material in applications such as concrete aggregate and road base. On the other hand, the low quality of crushed brick such as high water absorption and low strength in comparison with rock makes it difficult to meet concrete specifications. The importance of recycling brick cannot be overemphasized, since clinker bricks make up a large portion of construction and demolition waste. Considering the environmental impacts, construction and demolition waste threatens the health and safety of large and developed cities. The investigations showed that, when properly organized, masonry clay bricks could be crushed, sieved and used as economically as aggregate to produce concrete products. This research aims to examine a procedure to utilize clinker bricks in concrete and reproduce concrete bricks. The clinker bricks as a large portion of construction and demolition waste and are crushed and used as crushed coarse aggregate in concrete. Through an experimental program, physical characteristics of crushed clinker bricks, compressive and tensile strength of bricks concrete are investigated. Since the main objective of the research is to recycle clinker bricks, it is intended to produce concrete bricks so that comply with the standard requirements of clinker bricks. It is, therefore, desirable to produce concrete bricks to meet the strength of original clinker bricks. Also further researches were conducted to increase the quality of concrete produced with crushed bricks.
15 citations
TL;DR: In this paper, the authors present the results of laboratory model tests and theoretical analysis on the behavior of a strip footing supported on sheet pile wall-stabilized sandy slope and loaded vertically to failure.
Abstract: The paper presents the results of laboratory model tests and theoretical analysis on the behavior of a strip footing supported on sheet pile wall-stabilized sandy slope and loaded vertically to failure. The parameters varied in the study include the height, stiffness and location of the sheet pile wall, the location of the footing relative to the slope crest and the relative density of sand. Two-dimensional plane strain finite element analyses was used to analyze a prototype strip footing on sandy slope with same conditions. The results indicate that the inclusion of sheet pile wall has significant effect in improving the response of the strip footing and the slope itself. The theoretical results confirm the experimental results of the model footing tests and show reasonable agreement. Based on the numerical and experimental results, critical values of the sheet pile wall parameters for maximum stabilizing effect are established.
15 citations
Cites background from "Foundation analysis and design"
...Several studies reported experimental data and suggested design guidelines (King 1995; Bowles 1996; Sivakumar Babu and Munwar Basha 2008)....
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