scholarly journals Physical resistance of the flexural joint in mortar Joints and clay blocks prisms

2022 ◽  
Vol 2163 (1) ◽  
pp. 012006
Author(s):  
N A fanador García ◽  
G Guerrero Gómez ◽  
C Nolasco Serna
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Direct Relationship ◽  
Automatic Machine ◽  
Masonry Walls ◽  
Flexural Test ◽  
Different Types ◽  
Physical Resistance ◽  
Seismic Forces ◽  
Made In

Abstract In buildings, each component contributes to resisting seismic forces and an important part in this activity are the masonry walls composed of: fired clay solid brick of 120 mm width and horizontally perforated clay blocks of 100 mm and 150 mm width. The main focus of this research is to determine the flexural strength of the horizontally perforated clay block-mortar joint, using different types of mortar as established in the “Reglamento Colombiano de Construcion Sismo Resistente” for four suppliers used in the municipality of Ocaña, Colombia. A semi-automatic machine that takes into account the physics in the application of loads was designed to carry out the flexural test in mortar-block joints. The average flexural strength in mortar-block joints was determined for three types of mortar corresponding to 0.219 MPa, 0.232 MPa, and 0.291 MPa respectively, for the municipality of Ocaña, Colombia. This research established a direct relationship between the compressive strength of the mortar and the flexural strength of the 100 mm wide horizontally perforated clay mortar-block joint. A physical comparison was made in terms of the compressive strength of the prism and the flexural strength of the clay mortar-block joint with that obtained by other researchers in India and found quite similar results.

scholarly journals Flexural Strength of Fly ash Brick Masonry Wall with four different bond

2021 ◽  
Vol 2070 (1) ◽  
pp. 012190
Author(s):  
S Shenbagavalli ◽  
Ramesh Babu Chokkalingam
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Carrying Capacity ◽  
Masonry Wall ◽  
Crack Pattern ◽  
Brick Masonry ◽  
The Other ◽  
Masonry Walls ◽  
Load Carrying Capacity ◽  
Load Carrying

Abstract The strength of the masonry mainly depends on type of bond, types of bricks, compressive strength of the bricks and mortar used. The types of bonds play a major role in the properties of brick masonry wall. The most common types of bond used in practice are English bond, Flemish bond, Stretcher bond and Header bond. A lot of study has been performed on the load-carrying capacity of masonry walls. In this paper, effort has been taken to study the influence of different bonds on the flexural strength of the flyash brick masonry wall. For this wall of size 1m × 0.76m × 0.22m has been casted, cured for 28 days and tested in a loading frame. From the results, it was found the English bond gave higher flexural strength compared to other bonds such as Flemish, Stretcher and Header bond. The flexural strength of English bond was around 45 to 50% higher than the other bonds. The crack pattern at failure was also noted for all the masonry walls.

scholarly journals The Effect of Sisal Juice Extract Admixture on Compressive and Flexural Strength of Cement Concrete

2021 ◽  
Vol 11 (2) ◽  
pp. 7041-7046
Author(s):  
M. O. Eloget ◽  
S. O. Abuodha ◽  
M. M. O. Winja
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Cementitious Materials ◽  
Strength Development ◽  
Concrete Durability ◽  
Flexural Test ◽  
Concrete Compressive Strength ◽  
Cement Concrete ◽  
Shrinkage Cracking ◽  
Lower Permeability

The characteristics of concrete are influenced by the ratio of water to cementitious materials (w/c) used in the mixture. An increase in paste quality will yield higher compressive and flexural strength, lower permeability, increased resistance to weathering, improve the bond between concrete and reinforcement, reduced volume change from drying and wetting, and reduced shrinkage cracking tendencies. Admixtures are used to improve the properties of concrete or mortar. The current study investigates the effect of Sisal Juice Extract (SJE) as an admixture on concrete durability. SJE contains unrefined minerals which can be used as organic retarders to increase the rate of strength development at an early age. A total of 84 concrete cubes were produced in 7 sets of 12 samples each. One set was the control mix which had zero SJE content. The remaining sets had varying dosages of SJ namely 5%, 10%, 15%, 20%, 25%, and 30%. Twelve beam specimens were also cast and subjected to the three-point flexural test. To establish the effect on strength of concrete, compressive strength was tested at 7, 14, 28, and 56 days while flexural strength was tested at 28 days. The highest compressive strength was achieved at 5% dosage beyond which a decrease in strength occurred for all the higher dosages.

Effect of reinforcement in perforated brick arrangement for determining flexural strength and corrosion loss

2017 ◽  
Vol 8 (1) ◽  
pp. 11
Author(s):  
Mosfeka Mahabuba Akter ◽  
Atique Shahariar ◽  
Md. Shafiqul Islam
Keyword(s):  
Flexural Strength ◽  
Crack Opening ◽  
Masonry Wall ◽  
Brick Masonry ◽  
Masonry Walls ◽  
Bending Moments ◽  
Lateral Loads ◽  
Shear Forces ◽  
Gravity Forces ◽  
Seismic Forces

Brick masonry walls consist of the main elements that responsible for the global stability of brick masonry buildings when subjected to lateral loads such as wind and seismic forces. These elements are subjected to gravity forces, bending moments and shear forces due to the horizontal loading. The application of reinforcement increases the deformation capacity, controls the crack opening and allows a better distribution of stresses. Longitudinal reinforcements increase the flexural strength, even if they seem not to influence the shear behavior. Effectiveness of reinforcement on the increase of the resistance of brick masonry wall is highly related to the failure mode of the element. This paper shows the flexural strength of reinforced perforated brick masonry wall and weight loss of reinforcements for corrosion after a certain period of time. Several reinforce bar arrangements into the perforated brick masonry walls show the variety of possible applications.

Review on Different Types of Geopolymer Concrete Fibres

2016 ◽  
Vol 857 ◽  
pp. 388-394 ◽  
Author(s):  
Meor Ahmad Faris ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Khairul Nizar Ismail ◽  
Ratnasamy Muniandy ◽  
Aeslina Abdul Kadir ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Ordinary Portland Cement ◽  
Geopolymer Concrete ◽  
Base Materials ◽  
Different Types ◽  
History Of ◽  
Binder Material ◽  
Materials Used

Ordinary Portland Cement (OPC) has been used over the than hundred years for material construction especially as a binder in production of concrete. However, there are a few disadvantages with the using of OPC that have been found especially in terms of properties and green house effect. This paper reviews the potential of an alternative binder material with no cement usage (cementless) called as “geopolymer”. The history of the development geopolymer will be described. Different types of base materials used in the formation of geopolymer will be explained in details. The influence of different types of fibres to the mechanical properties especially compressive strength and flexural strength were explained well.

scholarly journals The use of Partial Glass Powder as Cement Replacement in Concrete M20 Grade on Mechanical Strength

2020 ◽  
Vol 8 (5) ◽  
pp. 4476-4481
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Glass Powder ◽  
Mix Design ◽  
Partial Replacement ◽  
Cement Replacement ◽  
Mix Proportion ◽  
Two Factors ◽  
Result Show ◽  
Made In

surely glass powder in concrete can be considered one of the most important or relevant fibers as partial replacement aiming to change or improving the properties of concrete. This work was made in the endeavor to know the influence of glass powder when is mixed or replacing cement in concrete using proportion 0%, 10%, 20% and 30%, using m20 grade of concrete. Considered two factors as age and mix proportion, was found the compressive results, also the result of tensile and flexural strength results at 3 days, another one at 7 days, at 28 days and 90 days curing concrete, the study was conducted, using cubes specimens after testes was found reporting that using glass powder in the m20 grade of mix design of concrete as cement replacement shows many advantages in its application on concrete, not only in reducing the co2 emissions to earth’s atmosphere as is written on the first part of this work but also the result show that the proportion up to 20% can improve its compressive strength in concrete, in terms of flexural strength was found increasing up to 10% of glass powder when used in concrete and was found also the optimal proportion in split tensile at 20% of glass powder.

scholarly journals FRESH AND MECHANICAL CHARACTERISTICS OF SELF-COMPACTING POLYPROPYLENE FIBER CONCRETE INCORPORATED WITH KAOLIN

SINERGI ◽  
2020 ◽  
Vol 24 (3) ◽  
pp. 223
Author(s):  
Hakas Prayuda ◽  
Berkat Cipta Zega ◽  
Fanny Monika ◽  
Fadillawaty Saleh ◽  
Martyana Dwi Cahyati
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Concrete Beam ◽  
Polypropylene Fiber ◽  
Polypropylene Fibers ◽  
Flexural Test ◽  
Self Compacting Concrete ◽  
Additional Material ◽  
Fiber Concrete

Self Compacting Concrete (SCC) is concrete with high fluidity so that it can flow and fill the spaces in the mold without the compaction process. This study discusses the effect of the adding of kaolin and polypropylene fibers in order to increase the flowability, compressive strength, flexural strength, and tensile strength in self-compacting concrete. The additional material of kaolin was 5%, 10%, and 15% of the cement weight. The polypropylene fibers were 1%, 1.5%, and 2%. The flowability test, which was used, was Table flow, V-Funnel, and L-Box. Compressive strength testing was conducted when the concrete was 7, 14, and 28 days old. The flexural test was performed with a measurement of 150 x 150 x 600 mm as many as 18 specimens tested at the age of 28 days. The results showed that the addition of kaolin and polypropylene fibers met the flowability specifications of self-compacting concrete. The addition of polypropylene can increase the flexural strength and tensile strength of the concrete beam, but cannot increase the compressive strength of self-compacting concrete.

scholarly journals Investigation of Compressive Strength of Straw Reinforced Unfired Clay Bricks For Sustainable Building Construction

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Abbas O. Dawood ◽  
Faten I. Mussa ◽  
Hayder Al Khazraji ◽  
Hussain A. Abd ◽  
Mohammed M. Yasser
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Natural Fibers ◽  
Construction Materials ◽  
Ground Level ◽  
Coarse Sand ◽  
Clay Brick ◽  
Clay Bricks ◽  
Different Types ◽  
Brick And Mortar

Abstract The mud is considered as one of the oldest construction materials in Iraq and is still used in the country regions for farmer’s houses or animal shelters. In Iraq, there are different types of mud constructions, including adobe, unfired bricks and cob. The presented study has focused on unfired clay brick where the clay is the main material. To ensure that the clay is pure and clean, it was excavated from the depth of 2 m below the natural ground level. Different types of unfired clay bricks produced by adding different materials to the clay to improve its properties and especially large deformation due to shrinkage. The added materials are classified into three concepts, the first additives are the natural fibers (straw, sawdust, and rice husk) and they are used to improve the tensile strength of brick and reduce the cracking due to shrinkage. The second additives included added the fine and coarse sand as a stabilizer to reduce the volumetric changes. The third additives are adding cement to increase the adhesive and cohesion of the mud matrix. The measurements included compressive strength of brick, mortar, and masonry and the flexural strength of bricks alone. The behaviour of unfired masonry prisms was also compared to the traditionally fired clay brick prisms. The results indicate that higher compressive strength of bricks was got for the mix that included clay, coarse sand and straw. The maximum flexural strength of bricks was got for the mix that included clay and sawdust, while for unfired masonry prism the higher compressive strength was obtained with a mix that included clay, coarse sand and straw. Finally, a proposed formula to obtain the compressive strength of unfired brick masonry from the compressive strength of brick and mortar is presented.

Ursachen der Festigkeit alter römischer und gothischer Gebäude und die Mittel, gleiche Dauerhaftigkeit bei neuen Mauerwerken zu erhalten / Reasons for the strength of old Roman and Gothic buildings and ways how to achieve the same durability with new masonry

2000 ◽  
Vol 6 (1) ◽  
pp. 3-40
Author(s):  
C.L. Ziegler
Keyword(s):  
Major Influence ◽  
Masonry Walls ◽  
Local Conditions ◽  
Lime Mortar ◽  
Curing Conditions ◽  
Roman Literature ◽  
Cement Mortars ◽  
Different Types ◽  
Mineral Binder ◽  
Made In

Abstract The Preussian Royal Directorate for Finance, Military and Property has published the following prize question in 1775: in which way depends durability of Gothic and Roman masonry on time, on specific local conditions, on the stones and mortars used, and on the design, the execution and curing conditions? And how is new masonry to be built in order to achieve the same durability? The text which has been selected for this award is presented in full length in this contribution. First some observations made in Roman buildings are described. The observations are explained based on Roman literature on architecture and buildings. The durability of frequently used mortar and stones is discussed. The preparation of durable mortars is treated in detail. Different types of masonry are described. In conclusion it is stated that for external renderings and for mortars in masonry exposed to humid conditions cement mortar, i.e. mortar made with lime mixed with puzzolanas as a mineral binder, are to be applied exclusively. Internal renderings can be made with plaster of Paris or lime mortar. In an appendix it is pointed out that the thickness of a wall has a major influence on durability. In Holland durable and thin masonry walls are being built, however. This is possible because high quality cement mortars and bricks burnt at high temperature (clinkers) are used

Sign in / Sign up

Export Citation Format

Share Document