The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
S Raghunath - One of the best experts on this subject based on the ideXlab platform.
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strength development and masonry properties of geopolymer Stabilised Soil lpc lime pozzolana cement mixes
Construction and Building Materials, 2020Co-Authors: Jitha P T, Sunil B Kumar, S RaghunathAbstract:Abstract Soil-based blocks and binders have emerged as sustainable alternatives to masonry units, and alkali-activated polymers (geopolymers) are being studied as alternatives to cement. This study attempts to stabilise Soil using a combination of geopolymerisation and hydration. Strength gain and applicability of Soil-based lime-pozzolana cement (LPC)-industrial by-products-geopolymer mortar have been studied. In order to optimise usage of alkaline materials, a series of parametric studies were carried out. A combination of LPC and flyash led to wet compressive strength of around 7.0 MPa, while a combination of LPC and ultra-fine slag resulted in strength of nearly 18.0 MPa. One of these mixes was used to develop bricks in order to investigate its masonry properties. Besides obtaining masonry strength parameters such as shear strength, bond strength and tensile strength for mortars, an attempt has additionally been made to obtain masonry prism strength and modulus of elasticity of prism assemblage. The masonry properties were found to be satisfactory for construction of low-rise, load-bearing masonry buildings.
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studies on strength development of geopolymer Stabilised Soil lpc lime pozzolana cement mortars
2019Co-Authors: P T Jitha, Sunil B Kumar, S RaghunathAbstract:Soil-based blocks and binders have emerged as sustainable alternative to masonry units, and alkali-activated polymers (geopolymers) are being studied as alternatives to cement. This study attempts to stabilise Soil using a combination of geopolymerisation and hydration. Strength gain and applicability of Soil-based LPC-industrial by-products-geopolymer mortar is studied. In order to optimise the usage of alkaline materials, a series of parametric studies were carried out. A combination of LPC and fly ash led to wet compressive strength of more than 10.0 MPa while a combination of LPC and ultra-fine slag resulted in strength of nearly 20.0 MPa.
Phillip John Jones - One of the best experts on this subject based on the ideXlab platform.
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thermophysical properties of Stabilised Soil building blocks
Building and Environment, 1995Co-Authors: E A Adam, Phillip John JonesAbstract:The thermal conductivity of lime/cement Stabilised hollow and plain earth blocks, produced from Sudanese Soil with the Brepak Press, has been measured using the Guarded Hot Box method. The results give thermal conductivity values for oven dry samples at (0.1–0.5%) moisture content by volume of 0.25–0.55 W/mK. For each Soil type, the conductivity is highest for cement Stabilised Soil building blocks. The results compare to existing leading standards for masonry and earthen products. Ingersolls' algorithm was used to calculate the specific heat capacity of the blocks. This gave values around 836 J/kg °C, which again compares favourably to reported results for Stabilised Soil building blocks.
E A Adam - One of the best experts on this subject based on the ideXlab platform.
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thermophysical properties of Stabilised Soil building blocks
Building and Environment, 1995Co-Authors: E A Adam, Phillip John JonesAbstract:The thermal conductivity of lime/cement Stabilised hollow and plain earth blocks, produced from Sudanese Soil with the Brepak Press, has been measured using the Guarded Hot Box method. The results give thermal conductivity values for oven dry samples at (0.1–0.5%) moisture content by volume of 0.25–0.55 W/mK. For each Soil type, the conductivity is highest for cement Stabilised Soil building blocks. The results compare to existing leading standards for masonry and earthen products. Ingersolls' algorithm was used to calculate the specific heat capacity of the blocks. This gave values around 836 J/kg °C, which again compares favourably to reported results for Stabilised Soil building blocks.
Jitha P T - One of the best experts on this subject based on the ideXlab platform.
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strength development and masonry properties of geopolymer Stabilised Soil lpc lime pozzolana cement mixes
Construction and Building Materials, 2020Co-Authors: Jitha P T, Sunil B Kumar, S RaghunathAbstract:Abstract Soil-based blocks and binders have emerged as sustainable alternatives to masonry units, and alkali-activated polymers (geopolymers) are being studied as alternatives to cement. This study attempts to stabilise Soil using a combination of geopolymerisation and hydration. Strength gain and applicability of Soil-based lime-pozzolana cement (LPC)-industrial by-products-geopolymer mortar have been studied. In order to optimise usage of alkaline materials, a series of parametric studies were carried out. A combination of LPC and flyash led to wet compressive strength of around 7.0 MPa, while a combination of LPC and ultra-fine slag resulted in strength of nearly 18.0 MPa. One of these mixes was used to develop bricks in order to investigate its masonry properties. Besides obtaining masonry strength parameters such as shear strength, bond strength and tensile strength for mortars, an attempt has additionally been made to obtain masonry prism strength and modulus of elasticity of prism assemblage. The masonry properties were found to be satisfactory for construction of low-rise, load-bearing masonry buildings.
B Venkatarama V Reddy - One of the best experts on this subject based on the ideXlab platform.
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moisture transport in cement Stabilised Soil brick mortar interface and implications on masonry bond strength
2019Co-Authors: B Venkatarama V Reddy, V Nikhil, M NikhilashAbstract:Interfacial bond development between masonry unit and the mortar is due to mechanical interlocking of cement hydration products into the brick pores. The paper presents results of investigations on moisture transport from fresh mortar bed to the cement-Stabilised Soil brick (CSSB) and its implications on the CSSB masonry bond strength. Three types of mortars (cement mortar, cement-lime mortar and cement-Soil mortar) and one type of CSSB were considered in the experiments. The results show that the CSSB’s absorb moisture rapidly in the initial soaking period and attain 75% saturation in about 20 min. The fresh mortars loose considerable amount of water due to brick suction and the water–cement ratio reduces drastically in the initial one hour of contact with the bricks. Use of partially saturated (50–75%) CSSB’s for masonry construction yield maximum bond strength and is therefore recommended.
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retrieving clay minerals from Stabilised Soil compacts
Applied Clay Science, 2014Co-Authors: B Venkatarama V Reddy, M S LathaAbstract:Stabilised Soil products such as Stabilised Soil blocks, rammed earth and Stabilised adobe are being used for building construction since the last 6-7 decades. Major advantages of Stabilised Soil products include low embodied carbon, use of local materials, decentralized production, and easy to adjust the strength, texture, size and shape. Portland cement and lime represent the most commonly used stabilisers for Stabilised Soil products. The mechanism of strength development in cement and lime Stabilised Soils is distinctly different. The paper presents results of scientific investigations pertaining to the status of clay minerals in the 28 day cured cement and lime Stabilised Soil compacts. XRD, SEM imaging, grain size distribution and Atterberg's limits of the ground Stabilised Soil products and the natural Soil were determined. Results reveal that clay minerals can be retrieved from cement Stabilised Soil products, whereas in lime Stabilised Soil products clay minerals get consumed in the lime-clay reactions and negligible percentage of clay minerals are left in the Stabilised Soil compacts. The results of the present investigation clearly demonstrate that cement stabilisation is superior to lime stabilisation in retrieving the clay minerals from the Stabilised Soil compacts. (C) 2014 Elsevier B.V. All rights reserved.
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Stabilised Soil blocks for structural masonry in earth construction
Modern Earth Buildings#R##N#Materials Engineering Constructions and Applications, 2012Co-Authors: B Venkatarama V ReddyAbstract:Abstract: Stabilised Soil blocks (SSBs) are energy efficient and low embodied carbon alternative materials for structural masonry. there is an upsurge of interest among building professionals in utilising low embodied carbon materials. This chapter deals with various aspects of SSBs applicable to structural masonry. A brief outline of Soil classification and developments in SSB technology is provided. different methods of Soil stabilisation and production techniques for SSBs are discussed in detail. The influence of Soil composition on SSB characteristics and optimum Soil grading for the production of SSBs are discussed. the role of block density, moulding moisture content and stabilisers on various SSB characteristics including durability aspects is illustrated. The chapter ends with a discussion of the behaviour of SSB masonry, guidelines for SSB masonry design and some short case studies.
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steam cured Stabilised Soil blocks for masonry construction
Energy and Buildings, 1998Co-Authors: B Venkatarama V Reddy, S S LokrasAbstract:Energy-efficient, economical and durable building materials are essential for sustainable construction practices. The paper deals with production and properties of energy-efficient steam-cured Stabilised Soil blocks used fbr masonry construction. Problems of mixing expansive Soil and lime, and production of blocks using Soil-lime mixtures have been discussed briefly. Details of steam curing of Stabilised Soil blocks and properties of such blocks are given. A comparison of energy content of steam-cured Soil blocks and burnt bricks is presented. It has been shown that energy-efficient steam cured Soil blocks (consuming 35% less thermal energy compared to burnt clay bricks) having high compressive strength can be easily produced in a decentralised manner.