scholarly journals Low Density, High Compressive Strength: Experimental Investigation with Various Particle Sizes of Sand for Different Mix Designs of Cement Mortar Manufacturing

2020 ◽  
Vol 864 ◽  
pp. 012010
Author(s):  
Akrm A Rmdan Amer ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
Liew Yun Ming ◽  
Muhammad Faheem Mohd Tahir ◽  
Warid Wazien Ahmad Zailani ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Cement Mortar ◽  
Low Density ◽  
Particle Sizes ◽  
High Compressive Strength

scholarly journals Experimental Behaviour of Sandwich Panels Using Copper Slag Mortar

2018 ◽  
Vol 7 (4.2) ◽  
pp. 5
Author(s):  
Dr Lavanya Prabha.Sa ◽  
Dr Neelamegam ◽  
Vinodhini Sri.R
Keyword(s):  
Compressive Strength ◽  
Axial Load ◽  
Cement Mortar ◽  
Sandwich Panels ◽  
Copper Slag ◽  
Fine Aggregate ◽  
Flexural Behaviour ◽  
High Compressive Strength ◽  
Compression Behaviour ◽  
Experimental Behaviour

This paper presents the study to investigate the viability of using copper slag as fine aggregate in cement mortar. Two series of cement mortar mixtures were prepared with different proportion of copper slag at different workability. In the first series, various proportions of copper slag is substituted for sand ranging from 0% to 100% with constant workability. Second series consists of fully replaced copper slag for sand in the cement mortar, which was achieved by maintaining the same workability as that of the control mortar mixture from first series and a control mixture for this new workability with sand as fine aggregate. The strength of twelve trial cement mortar mixtures were tested. The results indicate high compressive strength upto 50% replacement of copper slag, after that the compressive strength decreases with increase in copper slag percentage in cement mortar. The copper slag content in the mortar adversely affected the compressive strength of the mortar mixtures as 4.2% and 21.1% improvement in the compressive strength of the cement mortar for 50% replacement compared and 100% replacement compared with the control mortar mixtures. The density of cement mortar increases with increase in copper slag. From these trial mixtures two optimized mixtures were selected and were used to cast the sandwich panels. This panels were tested for flexural behaviour and axial load compression behaviour. The behavior of sandwich panels were simulated using ANSYS and the results were compared with experimental results.   

Strength and Porosity of Cement Mortar Blended with Metakaolin

2013 ◽  
Vol 838-841 ◽  
pp. 142-147 ◽  
Author(s):  
Jamilu Usman ◽  
Abdul Rahman Mohd Sam ◽  
Salihuddin Radin Sumadi
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Cement Mortar ◽  
Quantitative Relationship ◽  
Experimental Results

An experimental investigation was carried out to assess the effect of metakaolin (MK) on the compressive strength, flexural strength and porosity of cement mortar. The cement was partially substituted with MK at 0-30% replacement levels. The results show that the strengths and porosity of mortar containing up to 20% were superior to that of control (0% MK). The Balshin equation fits the experimental results of compressive strength and porosity of the specimens containing MK and there is a strong quantitative relationship between compressive strength and porosity of the specimens.

scholarly journals Lightweight cementitious composites containing cenospheres and polypropylene fibres after exposure to high temperatures

2020 ◽  
Vol 322 ◽  
pp. 01028
Author(s):  
Wojciech Szymkuć ◽  
Piotr Tokłowicz
Keyword(s):  
Thermal Conductivity ◽  
Experimental Investigation ◽  
Compressive Strength ◽  
High Temperatures ◽  
Room Temperature ◽  
Cementitious Composites ◽  
Low Density ◽  
Polypropylene Fibres ◽  
Residual Compressive Strength ◽  
Positive Effect

The paper presents the results of experimental investigation of lightweight cementitious composites with cenospheres (LCCC) exposed to high temperatures. We showed the positive effect of cenospheres on post- fire residual compressive strength in previous papers. This paper focuses on the LCCC with the addition of polypropylene (PP) fibres. Specimens are heated up to 400, 600, 800, 1000 and 1200 °C. Then they are cooled to ambient temperature and their residual flexural and compressive strength is tested. The results are compared with non-heated specimens with compressive strength above 50 MPa. For plain LCCC composites, the results show significant improvement of residual compressive strength in comparison with typical concretes. No significant changes of compressive strength are found after exposure to temperatures up to 600°C – more than 85 % of the residual compressive strength is retained after exposure to this temperature for both mixes. Polypropylene fibres are found to be a successful mean to mitigate spalling without significantly lowering neither ambient nor residual compressive strength. Moreover, designed composite has low density and low thermal conductivity at room temperature.

scholarly journals Experimental investigation on Ferrocement slab using partial replacement of cement by ceramic powder

2021 ◽  
Vol 2070 (1) ◽  
pp. 012195
Author(s):  
R G Dhilip Kumar ◽  
Binu Sukumar ◽  
A Hemamathi ◽  
P Ram Shankar ◽  
Sharanya Balki
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Cement Mortar ◽  
Ceramic Powder ◽  
Single Layer ◽  
Wire Mesh ◽  
The Other ◽  
Partial Replacement ◽  
Flexural Behaviour ◽  
Mix Proportion

Abstract In this study, flexural behaviour of the Ferrocement panels of size 500 mm x 500 mm x 50 mm with partial replacement of ceramic powder under monotonic loading is observed. All the Ferrocement panels were casted with cement mortar of mix proportion 1:4 with w/c ratio of 0.45 and all the specimens were casted with single layer of galvanized welded wire mesh of 2mm diameter with mesh opening of 12.5 mm x 12.5 mm. The ceramic powder is administered at various percentage replacement of cement by weight and the adopted variations are 0%, 5%, 10% and 15%. Compressive strength of the mortar mix for all the different ratios of ceramic powder was carried out and the results were discussed. It can be concluded that the Panel with 10% replacement of ceramic powder offers appreciable results than the other panels.

The Synthesis and Application of a Novel Class of Polyols for Preparation of Polyurethane

2013 ◽  
Vol 357-360 ◽  
pp. 1441-1445
Author(s):  
Xiao Lin Li ◽  
Zheng Fang ◽  
Dong Ji ◽  
Zhi Dong Wan ◽  
Kai Guo
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Polyurethane Foams ◽  
Low Density ◽  
Cell Content ◽  
Low Thermal Conductivity ◽  
High Compressive Strength ◽  
Rigid Polyurethane Foams ◽  
Closed Cell ◽  
Rigid Foams

The synthesis of a novel class of diamine-based polyols derivatives and the potentials and the limitations of these polyols were reported. This class of diamine-based polyols with high hydroxyl values and no acid values can be used in rigid polyurethane foams. The prepared rigid foams show the properties of low density, high closed cell content, low thermal conductivity, and high compressive strength.

scholarly journals High Early Strength of Slag Based Fiber Reinforced Concrete

2019 ◽  
Vol 8 (6) ◽  
pp. 1146-1150
Keyword(s):  
Experimental Investigation ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
High Compressive Strength ◽  
Hot Air ◽  
Early Strength ◽  
Non Destructive

The experimental investigation achieved the high early strength of fiber reinforced concrete by adding slag (GGBS), rapid hardening admixture, and steel fibers. This concrete is done curing for seven days and followed by hot air oven curing for four hours as per different mixes. Tests such as destructive and non-destructive test have been performed. During the testing of the cube which is cured for seven days has achieved the high compressive strength of 42.24 N/mm2 for M25 Grade of concrete

scholarly journals Properties of Different Mortars and their Effect on the Flexural Strength of Low Density Block Walls

2017 ◽  
Vol 2 (5) ◽  
pp. 31 ◽  
Author(s):  
Ash Ahmed ◽  
Jhon Kamau
Keyword(s):  
Compressive Strength ◽  
Flexural Strength ◽  
Thin Layer ◽  
Low Density ◽  
Curing Time ◽  
High Compressive Strength ◽  
The Difference ◽  
European Standards ◽  
Single Material ◽  
Masonry Units

Mortar for masonry is important because it provides the linkage between masonry units so enabling the composite to behave as a single material.  The type of mortar used determines the flexural and compressive strength of the masonry so in this paper, a range of mortars are examined and their effects on the flexural strength of low density block walls determined.  These include traditional designation (iii) (1 cement : 1 lime : 6 sand), designation (iv) (1 cement : 1 lime : 9 sand) mortars as defined in BS 5628, and two thin layer mortars. The conventional mortars were formed using both 42.5N or 32.5N PC to BS EN 197 in order to ascertain the difference these two cements have on the properties of mortar. The thin layer mortars show remarkably high compressive strength. The characteristic flexural strength of low density aircrete wallettes incorporating both these conventional and thin layer mortars was verified. The wallettes were tested in accordance with British and European standards. The flexural strength of aircrete wallettes was derived from the strength of small specimens tested to destruction under four-point loading. The strengths of the wallettes are high with impressive repeatability with the maximum strength being reached for thin layer wallettes within 7 days curing time. In general the strengths of both conventional mortar and thin layer mortar wallettes compare favourably to values reported in the standards.

Study of Performance on Reduce Fragility and Increase the Toughness of Fly Ash Ceramsite Concrete

2014 ◽  
Vol 977 ◽  
pp. 120-123 ◽  
Author(s):  
Rui Li ◽  
Xiao Hua Zhang ◽  
Yun Fang Meng
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Carbon Fiber ◽  
Compression Ratio ◽  
High Strength ◽  
Orthogonal Test ◽  
Low Density ◽  
High Compressive Strength

High strength fly ash ceramsite concrete has the advantages of low density, high compressive strength, but the brittleness is too large, limiting its application in engineering. In order to solve this problem, we used Carbon fiber in the orthogonal test. The results show that Carbon fiber can obviously improve the tension compression ratio of fly ash ceramisite concrete, improve the strength of fly ash ceramsite concrete brittleness.

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