Mechanical properties and microstructural analysis of cement mortar incorporating marble powder as partial replacement of cement

2015 ◽  
Vol 96 ◽  
pp. 615-621 ◽  
Author(s):  
Kirti Vardhan ◽  
Shweta Goyal ◽  
Rafat Siddique ◽  
Malkit Singh
Keyword(s):  
Mechanical Properties ◽  
Cement Mortar ◽  
Microstructural Analysis ◽  
Partial Replacement ◽  
Marble Powder

Effect of steel slag powder, fly ash, and silica fume on the mechanical properties and durability of cement mortar

2019 ◽  
Vol 9 (9) ◽  
pp. 1049-1054
Author(s):  
Yunxia Lun ◽  
Fangfang Zheng
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Silica Fume ◽  
Cement Mortar ◽  
Steel Slag ◽  
Mineral Admixtures ◽  
Partial Replacement ◽  
Slag Powder ◽  
Steel Slag Powder

This study is aimed at exploring the effect of steel slag powder (SSP), fly ash (FA), and silica fume (SF) on the mechanical properties and durability of cement mortar. SSP, SF, and FA were used as partial replacement of the Ordinary Portland cement (OPC). It was showed that the compressive and bending strength of steel slag powder were slightly lower than that of OPC. An increase in the SSP content caused a decrease in strength. However, the growth rate of compressive strength of SSP2 (20% replacement by the weight of OPC) at the curing ages of 90 days was about 8% higher than that of OPC, and the durability of SSP2 was better than that of OPC. The combination of mineral admixtures improved the later strength, water impermeability, and sulfate resistance compared with OPC and SSP2. The compressive strength of SSPFA (SSP and SF) at 90 days reached 70.3 MPa. The results of X-ray diffraction patterns and scanning electron microscopy indicated that SSP played a synergistic role with FA or SF to improve the performance of cement mortar.

Use of Spongilites as Pozzolanic Additives in Cement Mortars

2021 ◽  
Vol 325 ◽  
pp. 65-70
Author(s):  
Martin Vyšvařil ◽  
Patrik Bayer ◽  
Tomáš Žižlavský
Keyword(s):  
Mechanical Properties ◽  
Bulk Density ◽  
Frost Resistance ◽  
Water Retention ◽  
Cement Mortar ◽  
Partial Replacement ◽  
Fine Grained ◽  
Natural Pozzolans ◽  
Cement Mortars ◽  
Pozzolanic Additives

In this study, the utilization of two types of spongilites in various addition in cement mortars has been investigated with the purpose of exploring a new application of this natural pozzolans as cement mortar additives. The influence of the addition of spongilites on the physico-mechanical properties, frost-resistance, and microstructure of cement mortars as a function of time was studied. The results revealed that the rising proportion of spongilites in cement mortars causes increase in water retention of mortars, reduction of their bulk density, increase in porosity of mortars due to the growing predominance of capillary pores maintaining sufficient mortars strengths, and slightly increase in the frost-resistance of mortars. After initial tests, partial replacement of cement in fine-grained cement mortars with hitherto unexploited spongilites seems to be very promising. Based on the achieved results, a 20% cement replacement can be recommended as optimal.

The Effect of Micronized Waste Marble Powder as Partial Replacement for Cement on Resulting Mechanical Properties of Cement Pastes

2017 ◽  
Vol 1144 ◽  
pp. 54-58
Author(s):  
Zdeněk Prošek ◽  
Karel Šeps ◽  
Jaroslav Topič
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Reference Material ◽  
Dynamic Modulus ◽  
Blended Cement ◽  
Partial Replacement ◽  
Dynamic Shear Modulus ◽  
Dynamic Shear ◽  
Cement Pastes ◽  
Marble Powder

This article was focused on the influence of the micronized waste marble powder on mechanical properties of cement pastes. Resulting blended cement was composed of Portland cement CEM I 42.5 R and micronized marble powder with different percentage amounts (0 wt. %, 5 wt. %, 10 wt. % and 15 wt. %). Testing was carried at prismatic samples of dimension 40 × 40 × 160 mm. The investigated mechanical properties were dynamic modulus of elasticity, dynamic shear modulus, flexural strength and compressive strength for the 28 days old samples. The results obtained from these materials were compared with reference material.

scholarly journals Fabrication of Advanced Cement Mortar for Building Anti-Bacterial Applications

2019 ◽  
Vol 15 (1) ◽  
pp. 89-96
Author(s):  
Farhad M. Othman ◽  
Alaa A. Abdul-hamead ◽  
Noor A. Hmeed
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Cement Mortar ◽  
Anatase Tio2 ◽  
Partial Replacement ◽  
Early Age ◽  
Weight Percentage ◽  
Atomic Force ◽  
Nano Material ◽  
Scanning Electron

In this research, we have added nano anatase TiO2 as a partial replacement of Portland cement by a weight percentage of (0.25 to 1%) for the development of properties for protection against bacteria. The control mix was made by using "the cement to sand" proportion about (1: 2.75) with the "water to cement" proportion of (0.5) to study the structure, porosity, water absorption, density, mechanical properties, as well as anti-bacterial behavior. Inspections have been done such as scanning electron microscopy (SEM), and atomic force microscope (AFM) for mortar. Experimental results showed that after the addition of Nano powders in cement mortar, the structural properties improved significantly with the development of hydration of cement mortar at early age, reduction of porosity and the increase of density as well as enhancement in compressive and anti-bacteria properties that make the preparation of nano material very suitable for protection against bacteria.

Changes of Mechanical Properties of Lightweight Cement Mortar Mixed with Recycled Expanded Polystyrene and Subjected to High Temperatures

2014 ◽  
Vol 1051 ◽  
pp. 752-756 ◽  
Author(s):  
Rocío Sancho ◽  
Ángel Castillo ◽  
Ma Eugenia Maciá ◽  
Rosa Corral
Keyword(s):  
Mechanical Properties ◽  
High Temperatures ◽  
Mechanical Response ◽  
Cement Mortar ◽  
Construction Materials ◽  
Lightweight Aggregate ◽  
Expanded Polystyrene ◽  
Partial Replacement ◽  
Different Temperatures ◽  
Residual Product

The main aim of this paper is to evaluate the influence of the recycled expanded polystyrene as lightweight aggregate on the mechanical properties of lightweight cement mortar when subjected to high temperatures.Various tests have been carried out on different mixtures of mortar. The water/cement mix proportion has always been the same and only the nature of the aggregates has changed, with a partial replacement of the conventional aggregate by recycled ground EPS (EPS-G) with values ranging from 10% to 30%, achieving significant results in relation to exposure to high temperatures. In this research, the samples have been subjected to different temperatures of exposure, in order to analyze the influence of the lightweight recycled arid dosage in the mechanical properties of mortars.The results of this study show the ability of mechanical response at high temperatures with light mortars EPS-G. This study shows how this new mix can be used in different building types, optimizing construction materials and reducing mortars density while transforming a residual product into an active product.

scholarly journals PHYSICAL AND MECHANICAL PROPERTIES OF CEMENT MORTAR USING LIME AND BAMBOO-ASH AS PARTIAL REPLACEMENTS

2018 ◽  
Vol 30 (2) ◽  
Author(s):  
Nkumah Lucky David ◽  
Lasisi Kayode Hassan
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Absorption Rate ◽  
Cement Mortar ◽  
Significant Proportion ◽  
Physical And Mechanical Properties ◽  
Partial Replacement ◽  
Increase With Increase ◽  
Mix Proportion ◽  
Masonry Mortar

The effect of varying different proportion of bamboo ash and lime as partial replacement for cement in mortar were studied. Bamboo stalks were collected and burned into bamboo ash in furnace. The results of the physical and mechanical properties of the cement and aggregate used were within the requirements stipulated by relevant standards. The mix proportion 1:6 was used out of which 2%, 4% of bamboo ash and 2%, 4% of lime were used to partially replace cement in the mortar. The compressive strength of most of the mortar cubes increases with curing days and their values lie within the required strength of 2.5 N/mm2 – 6.5 N/mm2 as stipulated by relevant codes. The water absorption rate was observed to increase with increase in bamboo ash and lime content, while the density decreases as the percentage of bamboo ash and lime in the mortar increases by mass. The study therefore can be concluded that in the presence of significant proportion (i.e. 4% or more) of bamboo ash the strength of mortar increased hence making it adequate for the production of masonry mortar and reduces building failure.

scholarly journals Experimental Study of Compressed Soil Bricks with Partial Replacement of Soil by Bagasse Ash, Marble Powder and Rice Straw

2021 ◽  
Vol 889 (1) ◽  
pp. 012060
Author(s):  
Raghav Sharma ◽  
Tarun Sharma
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Water Absorption ◽  
Rice Straw ◽  
Construction Material ◽  
Absorption Capacity ◽  
Partial Replacement ◽  
Water Absorption Capacity ◽  
Marble Powder ◽  
Partical Size

Abstract The problem of pollution is increasing daily due to excessive production and improper disposal of the waste. some waste like ashes and stone powder can be easily utilize in the concrete or with any other construction material like paver block or bricks. To utilize material like marble powder bagasse ash and rice straw effectively the experimental study of Earth compressed bricks is conducted. This paper deals about the mechanical properties of earth compressed bricks which are made up of soil and the add-ons are marble powder, bagasse ash and rice straw fiber with different ratios of combination. This ratios are for marble powder 20%, 30% and 40%. for bagasse ash it is 7% 10% and 13% and for rice straw it is .5%, .75% and 1%. The compression property of bricks is increased when the marble powder is increased with less water absorption in soil because waste marble powder does not absorbs water and due to its fine partical size it fills the voids in the bricks and creates good packing of the bricks. Water is absorbed by Rice Straw and bagasse ash which results in increase of the water absorption capacity of earth compressed bricks.

scholarly journals The Effect of Partial Replacement of Polymethyl Methacrylate(PMMA) on the Compressive and Flexural Strength of Ordinary Cement Mortar

2020 ◽  
Vol 5 (4) ◽  
pp. 443-447
Author(s):  
Mustafa Kadhim Rustum ◽  
Khalid M. Eweed
Keyword(s):  
Flexural Strength ◽  
Polymethyl Methacrylate ◽  
Cement Mortar ◽  
Microstructural Analysis ◽  
Sem Analysis ◽  
Partial Replacement ◽  
Early Age ◽  
Homogeneous Microstructure ◽  
Binder Ratio ◽  
The Impact

 In this paper studied the impact of the partial replacement of the cement by self-cure polymer (polymethyl methacrylate PMMA) in different ratios on the compressive strength, flexural strength and microstructural analysis, five ratios of cement replacement (1%, 3%, 5%, 7%, and 9%) by PMMA, these tests have been performed after curing at an early age (7days) and standard age (28days). The preparation of the mortar has been performed with the use of 1:2 cement to the sand ratio by weight, with (0.5) water to binder ratio and polymer to self-cure monomer (methyl methacrylate MMA) ratio 2:1. Results have shown that the flexural and the compressive strengths of mortars have been increased with increasing the ratio of the replacement (1%, 3%, 5%) and then decreased at replacement ratio (7% and 9%). The best results of the new cement mortar were reached at the partial replacement of cement with 5% of PMMA were recorded enhancement of compressive strength15.8% at an early age and 24.4% for standard age and enhancement of flexural strength 16.8% at an early age and 19.4% for standard age, from scanning electron microscopy SEM analysis observed the PMMA filling the pores and form more homogeneous microstructure in G32 as compared with the microstructure of G1.

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