Effect of Hot Weather Concreting on the Mechanical and Durability Properties of Concrete-a Review

Ramadan, Rawan; Ghanem, Hassan; Khatib, Jamal; Elkordi, Adel

doi:10.54729/axec5733

Cited by 4 publications

(2 citation statements)

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“…Identifying the various ways of overcoming expansion and contraction due to weather effects on plant-based pozzolana materials (Ramadan, Ghanem, Khatib, & Elkordi (2022) Declaration I, the author is this article, declare no competing interest.…”

Section: Recommendationmentioning

confidence: 99%

Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

Kimarai

2023

Preprint

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This research aimed at testing the viability of using Sorghum Stalk Ash (SSA) as a partial replacement of lime in the stabilization of red clay soils for road subgrade construction. Red clay soils have been identified as highly expansive soils, which are affected by both climatic conditions and loading patterns. The consideration of both traffic loading patterns and climatic effects on these soils has been taken into account. A penetration test of 2.5mm has been used on both pure red soils and stabilized soils at 10% and 15% partial replacement of lime with SSA and showed an improvement in the CBR of stabilized red clay soils up to 11.6%. Again, the PI of stabilized soils at 15% partial replacement of lime reduced up to 11.2%. The results obtained on both CBR and PI of these red clay soils are within the recommended values for the effective subgrade required for laying both permanent and flexible pavements. As a result, a recommendation of making use of SSA to lower the quantities of lime and its costs used in the stabilization of highly expansive soils have been tested through this research. However, further research on a more percentage partial replacement of lime to improve the PI of these soils to below 10% while keeping the CBR levels within the road construction regulations is welcomed. Therefore, the use of sorghum stalk plant parts in this study complies with international, national, and institutional guidelines regarding the properties of an effective pozzolana material.

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Section: Recommendationmentioning

confidence: 99%

Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

Kimarai

2023

Preprint

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“… Resting on the viability of using Sorghum Root Ashes (SRA) as a full and partial replacement of lime or cement in the stabilization of weak soils.  Identifying the various ways of overcoming expansion and contraction due to weather effects on plant-based pozzolana materials [9].…”

Section: Engineeringmentioning

confidence: 99%

Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

Kimarai¹

2023

ENG

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This research aimed at testing the viability of using Sorghum Stalk Ash (SSA) as a partial replacement of lime in the stabilization of red clay soils for road subgrade construction. Red clay soils have been identified as highly expansive soils, which are affected by both climatic conditions and loading patterns. The consideration of both traffic loading patterns and climatic effects on these soils has been taken into account. A penetration test of 2.5 mm has been used on both pure red soils and stabilized soils at 10% and 15% partial replacement of lime with SSA and showed an improvement in the CBR of stabilized red clay soils up to 11.6%. Again, the PI of stabilized soils at 15% partial replacement of lime reduced up to 11.2%. The results obtained on both CBR and PI of these red clay soils are within the recommended values for the effective subgrade required for laying both permanent and flexible pavements. As a result, a recommendation of making use of SSA to lower the quantities of lime and its costs used in the stabilization of highly expansive soils have been tested through this research. However, further research on a more percentage partial replacement of lime to improve the PI of these soils to below 10% while keeping the CBR levels within the road construction regulations is welcomed.

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Organizational and technological solutions for controlling concrete structures projects in the dry hot weather in Iraq

Al-Asadi,

Al-Juboori,

Fakhratov

2024

BIO Web Conf.

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Iraq has suffered from a long period of neglect in projects due to the circumstances it has experienced, and there is a great need to construct infrastructure and development projects. The weather in Iraq is characterized by an increasing rise in temperatures, with summer temperatures reaching 50°C and relative humidity around 24%. The summer season extends for 5 months, and this requires procedures and precautions in projects that include concrete structures in hot climates that represented by high temperatures and low humidity. Such weather would affect the properties of fresh and hardened concrete, as the rapid evaporation of water from the mix causes different damages to the concrete, the appearance of shrinkage cracks, as well as a lack of workability. It also affects the strength of the concrete and its durability at later ages. Also, there are other problems in such projects related to poor quality and increased costs and time required to implement construction projects. Therefore, problems related to hot climates were studied through literature review in this regard. A questionnaire was also conducted to show the real problems that these projects suffer from, and problems were found that go beyond providing the above precautions that must be available in hot weather. Rather, it requires an increase in allocations, and there are problems related to the need for planning, as well as the necessary administrative, technical and legislative measures to improve performance.

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Effect of Hot Weather Concreting on the Mechanical and Durability Properties of Concrete-a Review

Cited by 4 publications

References 0 publications

Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

Using Sorghum Stalk as a Partial Replacement of Lime in the Stabilization of Red Clay Soil for Road Sub-Grade Construction

Organizational and technological solutions for controlling concrete structures projects in the dry hot weather in Iraq

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