Straw bale fire test on cement plaster mixes

Garas, Gihan L.; Allam, Mostafa E.; Mamdouh, K.

doi:10.2495/safe090061

Cited by 8 publications

(8 citation statements)

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“…The fi re test was applied on single plastered bales under no compression and all specimens were tested for a complete 2-hours direct fl ame exposure after which the test was ended. The test standard does not provide information as to performance of specimens constructed with components or lengths other than those tested [11].…”

Section: Tests On Cement Plaster Mixesmentioning

confidence: 99%

“…It is out of the scope of this research to study the humidity of the plastered straw bale walls although it is recorded by the sensors and shown in all graphs. Garas et al 2009 presented that the surface of all specimens that were directly exposed to the hose of the fl ame maintained the confl agration for the 2 hours without heat transmission through the wall to ignite the material on the other side.…”

Section: Thermal Performance Of Rice Straw Bale Plastered Wallsmentioning

confidence: 99%

“…2 METHODOLOGY AND SCOPE This research is based on the results derived from a series of mechanical tests applied on cement plaster mixes of various proportions presented in Garas et al 2008 [10] and 2009 [11]. The plaster mixes were tested to examine their performance in compression, modulus of elasticity (MOE) and modulus of rupture (MOR) as well as their resistance to fi re exposure for 2 hours.…”

Section: Straw Bale Fi Re Resistance Ratingmentioning

confidence: 99%

“…Based on the results of the fi re resistance test and the mechanical lab tests conducted by Garas [10,11], mix C consisting two parts of lime and one part of cement that showed the appearance of weak points resulted in cracks under fi re exposure and was excluded from fi eld applications.…”

Section: Thermal Performance Of Rice Straw Bale Plastered Wallsmentioning

confidence: 99%

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Thermal performance of plastered rice straw bales and walls: a case study

Garas¹,

Allam²

2011

Int. J. SDP

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Straw, as a fi ber, has been used as part of building materials for several years. A carefully constructed strawbale building has excellent thermal performance because of the combination of the high isolative value of the bales and the thermal mass provided by the thick plaster coating of the interiors. This paper addresses the thermal performance of rice straw bales and walls plastered with different cement plaster mixes. The plaster mixes are applied on straw bales of thickness 45 cm. A fi re resistance test is conducted for two complete h°urs on the bales using direct fl ame after which the fl ame was discontinued. According to the test results, the mix with equal parts of cement and lime showed acceptable mechanical properties. This mix is chosen to be applied on a prototype straw bale wall compartment with an aim to evaluate the thermal performance of the plastered straw bale walls in arid desert climate at the hottest month of the year in Egypt. The straw bale wall test is undertaken by collecting actual measurements on site. Thermal sensors are installed on both external and internal sides of the wall to record the heat transmission through the plastered walls. The results showed that all the plastered bales survived fi re penetration for the life period of the test. Increasing the lime content and decreasing the cement content of the mix raises the possibility of weak areas in the plaster of straw bale walls causing cracks during direct fi re exposure. Similar width and density of the bales for all the specimen mixes didn't affect the heat transmission through the bales, which did not exceed 5.3°C in all samples. The site readings on the straw bale walls showed high range of temperature fl uctuation on the external wall sensor, while in the internal wall sensor the temperature fl uctuation was kept to minimum values. It was concluded that due to their high thermal insulation, straw bale structures require comparatively less energy to sustain thermal comfort conditions.

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Section: Tests On Cement Plaster Mixesmentioning

confidence: 99%

Section: Thermal Performance Of Rice Straw Bale Plastered Wallsmentioning

confidence: 99%

Section: Straw Bale Fi Re Resistance Ratingmentioning

confidence: 99%

Section: Thermal Performance Of Rice Straw Bale Plastered Wallsmentioning

confidence: 99%

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Thermal performance of plastered rice straw bales and walls: a case study

Garas¹,

Allam²

2011

Int. J. SDP

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“…The thin wall, plastered with the compo mortar, exposed the fire load of 120 minutes, and the temperature on the non-exposed wall surface was not higher than 120 °C [17,18]. One of the interesting tests of straw resistance on fire was carried out with plastered blocks, which were made by straw bales plastered with a compo mortar of different mixing proportions [19]. The thickness of the blocks was 50 cm, i.e.…”

Section: Fire Resistance Of Structures With Baled Strawmentioning

confidence: 99%

Termoizolaciona Svojstva I Vatrootpornost Zidova Sa Ispunom Od Balirane Slame

Marković¹,

Milić²

2018

Zbornik GFS

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Fire hazard of compressed straw as an insulation material for wooden structures

et al. 2020

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SUMMARYThe construction sector continues to adapt to the challenges posed by climate change. Architects and engineers aim to build sustainable, energy, resource, and cost‐efficient structures by increasingly using bio‐based building materials. However, fire safety has always been a significant concern for timber building construction internationally. The objective of the study presented in this article is to document fire hazards of compressed straw when used as thermal and acoustic insulation within wood‐framed building assemblies. Three densities of compressed straw (75, 125, and 175 kg/m3) were selected and their combustion and thermal responses were evaluated at various scales, in attempt to define the optimal density considering various factors. The performance of the straw was also compared with commercially available insulation materials and then tested under exposure to severe heating in medium‐scale wood‐framed assemblies to evaluate the impacts of the straw as compared with a noncombustible insulation. The compressed straw with a density of 75 kg/m3 was found to have the best behavior with respect to both reactions to fire and insulation properties. The results suggest that compressed may have similar or better behavior under the heating conditions investigated when compared to a commercially available combustible insulation material. The use of this material as a primary insulation in a buildings is considered manageable by thoughtful design, construction, and building use without unduly increasing risks associated with fire.

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Straw bale fire test on cement plaster mixes

Cited by 8 publications

References 1 publication

Thermal performance of plastered rice straw bales and walls: a case study

Thermal performance of plastered rice straw bales and walls: a case study

Termoizolaciona Svojstva I Vatrootpornost Zidova Sa Ispunom Od Balirane Slame

Fire hazard of compressed straw as an insulation material for wooden structures

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