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Mechanical strength, durability and drying shrinkage of ...

2012-5-1  Mechanical strength, durability and drying shrinkage of structural mortar containing HCWA as partial replacement of cement. ... The autogenous shrinkage was due to the self-desiccation of the mix during hydration while the drying shrinkage occurred due to the loss of evaporable water in

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Mechanical strength, durability and drying shrinkage of ...

In addition, mechanical strength, durability and shrinkage properties of structural grade mortar mixtures produced by partial replacement of cement using HCWA were investigated. A total of six mortar mixtures including control mortar (containing only neat cement as binder) and HCWA mixtures with varying level of cement replacement using HCWA ...

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Mechanical strength. Durability and drying shrinkage of ...

Request PDF Mechanical strength. Durability and drying shrinkage of structural mortar containing HCWA as partial replacement of cement Potential use of high calcium wood ash (HCWA) as partial ...

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Effect of limestone powder on mechanical strength ...

2021-3-28  In this paper, the effect of different amounts of LSP on the mechanical strength, durability and drying shrinkage of AAS pastes activated with NaOH and sodium silicate solution was studied. The main conclusions of this paper can be summarized as follows: 1.

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Effect of limestone powder on mechanical strength ...

Download Citation Effect of limestone powder on mechanical strength, durability and drying shrinkage of alkali-activated slag pastes The use of limestone powder (LSP) as a cement replacement ...

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Evaluation of the mechanical properties, durability and ...

2019-6-20  Therefore, the use of PAN microfibers increases the mechanical strength (compressive and flexural), enhances durability properties (decreases porosity and capillary absorption, and increases in resistance to water penetration), and provokes a considerable decrease in drying shrinkage of mortar. Download : Download high-res image (197KB)

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(PDF) Mechanical properties and drying shrinkage of alkali ...

2021-11-6  Mechanical properties and drying shrinkage of alkali-activated seawater coral aggregate concrete. ... strength, and durability ... Mechanical behavior and durability of.

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Mechanical and drying shrinkage properties of structural ...

2008-5-1  The shrinkage rates of PAC are greater than the control concrete at earlier ages and the shrinkage strains of PAC increased significantly with the PA content. 5. Due to the non-absorbent properties of polystyrene aggregate, the ratio of reversible shrinkage to drying shrinkage observed for PAC was lower than that of the control concrete. 6.

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What is Drying Shrinkage? Its Occurrence, Causes, and ...

2021-4-18  Drying shrinkage occurs when water begins evaporating from the exposed surface and the moisture differential along the depth of the slab causes strain which induces tensile stresses. The driving force for drying shrinkage is the evaporation of water from the hydrated cement paste which is exposed to air with a relative humidity lower than that

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Effect of shrinkage reducing admixture on drying

2021-2-8  Mortar specimens are used for the determination of drying shrinkage, while concrete specimens are used for the determination of compressive strength and durability. The alkali activator modulus of all specimens was 1.30, and the mixing proportion of coal gangue to slag powder were 1:1.

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Mechanical strength. Durability and drying shrinkage of ...

Request PDF Mechanical strength. Durability and drying shrinkage of structural mortar containing HCWA as partial replacement of cement Potential use of high calcium wood ash (HCWA) as partial ...

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THE MECHANICAL STRENGTH AND DRYING SHRINKAGE

2019-6-25  High strength concrete, flowable concrete, mineral admixtures, mechanical properties, drying shrinkage behavior Abstract With the fast in population development, there are a higher demand in housing and infrastructure such as high-rise buildings and long-span bridges.

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(PDF) THE MECHANICAL STRENGTH AND DRYING

2019-6-25  mechanical strength performance of G60 and reduce the drying shrinkage behavior which will results in crack of the ternary blended concrete is highlighted in this report.

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Mechanical, Durability, and Time-Dependent Properties of ...

This paper presents the results of tests on mechanical properties, durability, short-term testing for creep, and drying shrinkage of recycled aggregate concrete (RAC). A natural aggregate concrete (NAC) mixture was designed for a characteristic compressive strength of 40 MPa (5.8 ksi) and the natural coarse aggregate (NA) was replaced by coarse ...

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Strength, Fracture and Durability Characteristics of ...

The performance of the developed mortars has been assessed in terms of mechanical (dry density, compressive strength, elastic modulus, fracture toughness, crack tip toughness and fracture energy), durability properties (drying shrinkage in water and ambient/air curing regimes, sorptivity and freeze-thaw resistance) and microstructural ...

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Mechanical Properties and Durability of Normal and Water ...

Based on the initial trial mixes, four high strength concrete mixes were selected for further tests on mechanical properties (compressive strength, tensile splitting strength, flexural strength and static modulus of elasticity), drying shrinkage and durability (water absorption, sorptivity, chemical resistance to MgSO 4 solution). Incorporation ...

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Influence of CDW Recycled Aggregate on Drying

In this way, this paper will examine the mechanical strength, physical properties and drying shrinkage of mortar, which use recycled fine aggregates that have originated from construction and demolition waste (CDW) containing mortar (55%), ceramic (26%) and concrete (16%). Two natural mortars, made with natural sand, were produced with cement ...

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What is Drying Shrinkage? Its Occurrence, Causes, and ...

2021-4-18  Drying shrinkage occurs when water begins evaporating from the exposed surface and the moisture differential along the depth of the slab causes strain which induces tensile stresses. The driving force for drying shrinkage is the evaporation of water from the hydrated cement paste which is exposed to air with a relative humidity lower than that

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Mechanical and Durability Properties of Recycled

Tests were undertaken to establish the compressive strength, elastic modulus, flexural strength, splitting tensile strength, workability, drying shrinkage, and water absorption of each batch. Test parameters comprised the recycled aggregate replacement ratio, size of coarse aggregates, and mixing method used in the preparation of concrete.

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Mechanical, toughness, bond and durability-related ...

2016-8-10  This paper presents an experimental investigation of the mechanical, toughness, bond and some durability-related properties of oil palm shell lightweight concrete (OPSC) containing up to 1.0 % steel fibres. While the inclusion of up to 1.0 % steel fibres gave enhanced tensile and bond strength as well as toughness to the OPSC, little influence was noticed in the case of the compressive ...

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Mechanical Properties, Durability, and Drying Shrinkage of ...

1983-7-1  Results are given of a preliminary investigation to determine the strength, freezing and thawing characteristics, and drying shrinkage of concrete incorporating various percentages of silica fume. Eighteen 0.06-m 3 air-entrained concrete mixes were made incorporating 0 to 30% silica fume as a partial replacement for cement.

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THE MECHANICAL STRENGTH AND DRYING SHRINKAGE

2019-6-25  High strength concrete, flowable concrete, mineral admixtures, mechanical properties, drying shrinkage behavior Abstract With the fast in population development, there are a higher demand in housing and infrastructure such as high-rise buildings and long-span bridges.

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(PDF) THE MECHANICAL STRENGTH AND DRYING

2019-6-25  mechanical strength performance of G60 and reduce the drying shrinkage behavior which will results in crack of the ternary blended concrete is highlighted in this report.

Get Price

Mechanical, Durability, and Time-Dependent Properties of ...

This paper presents the results of tests on mechanical properties, durability, short-term testing for creep, and drying shrinkage of recycled aggregate concrete (RAC). A natural aggregate concrete (NAC) mixture was designed for a characteristic compressive strength of 40 MPa (5.8 ksi) and the natural coarse aggregate (NA) was replaced by coarse ...

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A Comparative Study on the Mechanical and Durability ...

2018-7-30  On the other hand, more recently the use of shrinkage reducing admixtures has been suggested to improve concrete performance in terms of low risk of cracking related to drying shrinkage. In this study, the mechanical properties and the durability of the shrinkage compensating concrete by addition of shrinkage reducing admixtures such as Plaster ...

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Strength, Fracture and Durability Characteristics of ...

The performance of the developed mortars has been assessed in terms of mechanical (dry density, compressive strength, elastic modulus, fracture toughness, crack tip toughness and fracture energy), durability properties (drying shrinkage in water and ambient/air curing regimes, sorptivity and freeze-thaw resistance) and microstructural ...

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Mechanical properties and durability performance of ...

Mechanical properties such as compressive strength and elastic modulus, and autogenous and drying shrinkage, along with various durability parameters of the different concretes were assessed. Oxygen permeability, rapid chloride penetration, chloride migration, resistivity development and water sorptivity were the various parameters considered ...

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The effect of rice husk ash on the mechanical and ...

Drying shrinkage was another parameter was investigated and the results prove it that fineness of RHA particles effect directly on the drying shrinkage performance of concrete. Where, each of RHA-A and B (coarse particle size) strongly reduces drying shrinkage compare to RHA-C and C5.

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Influence of CDW Recycled Aggregate on Drying

In this way, this paper will examine the mechanical strength, physical properties and drying shrinkage of mortar, which use recycled fine aggregates that have originated from construction and demolition waste (CDW) containing mortar (55%), ceramic (26%) and concrete (16%). Two natural mortars, made with natural sand, were produced with cement ...

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EVALUATION OF THE MECHANICAL PROPERTIES AND

2017-2-17  Drying Shrinkage and Swelling Tests Drying shrinkage measurements were conducted in agreement with NF P15-433. The length change was measured using a dial gauge extensometer with a 160 mm gage length. The measurements of drying shrinkage were carried out every 24 h for the first three weeks and then three times a week.

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