المؤلفون: Pham, Van Nam^{Aff1, IDs10163023018587_cor1}, Nguyen, Tien Dung, Nguyen, Hoang Giang, Kawamoto, Ken^{Aff1, Aff2}

المصدر: Journal of Material Cycles and Waste Management: Official Journal of the Japan Society of Material Cycles and Waste Management (JSMCWM) and the Korea Society of Waste Management (KSWM). 26(2):845-859

المؤلفون: Samer turki, Sarmad Ibrahim, Mohammed Al Maamorib

المصدر: Engineering and Technology Journal, Vol 42, Iss 5, Pp 569-581 (2024)

مصطلحات موضوعية: construction and demolition waste, autoclaved aerated concrete waste, recycling, cement replacement, polymer-modified cement mortar, Science, Technology

الوصف: One of the most important construction activities worldwide is the construction using autoclaved aerated concrete units at the global level is increasing significantly and the use of these units leads to the consumption of large amounts of resources and causes large residues waste, which leads to great damage to the environment and significant economic losses for companies and people. In recent periods, a noticeable increase has been observed in the manufacture of building units in Iraq. Iraqi factories have been affected by the waste resulting from manufacturing processes. The main objective of the study is to utilize tons of waste caused by the process of manufacturing AAC block in many Iraqi factories and turn it into a high-quality, environmentally friendly, and economical cement-based polymer-modified adhesive. The experimental part was carried out by preparing the product first and then studying properties according to international standards, SEM, EDS, mapping, and other techniques have been used to characterize the prepared samples. The adhesive properties were strongly affected by autoclaved aerated waste powder. Excellent bond strength exceeded the standard by 30%. Building units had 50% higher adhesion and 30% higher tensile strength than standard. Compared to market adhesive, the study adhesive has better properties. As for the economic factor, using waste in adhesive manufacturing reduced the price of 1 m3 by 15% compared to the reference mixture, but the study's adhesive was at least 40% cheaper than imported adhesives.

وصف الملف: electronic resource

Relation: https://etj.uotechnology.edu.iq/article_182207_3c1d8702eefd857fe911eb6ac2e49b33.pdf; https://doaj.org/toc/1681-6900; https://doaj.org/toc/2412-0758

URL الوصول: https://doaj.org/article/271a56f346774e068adeac27fd3dc11d

المؤلفون: Bui, Quoc-Bao^Aff13, Nguyen, Tuan-Dung^Aff13, Schwede, Dirk^Aff14, Ruf, Lavinia^Aff15

المساهمون: di Prisco, Marco, Series Editor^Aff1, Chen, Sheng-Hong, Series Editor^Aff2, Vayas, Ioannis, Series Editor^Aff3, Kumar Shukla, Sanjay, Series Editor^Aff4, Sharma, Anuj, Series Editor^Aff5, Kumar, Nagesh, Series Editor^Aff6, Wang, Chien Ming, Series Editor^Aff7, Cui, Zhen-Dong, Series Editor^Aff8, Ha-Minh, Cuong, editor^Aff9, Pham, Cao Hung, editor^Aff10, Vu, Hanh T. H., editor^Aff11, Huynh, Dat Vu Khoa, editor^Aff12

المصدر: Proceedings of the 7th International Conference on Geotechnics, Civil Engineering and Structures, CIGOS 2024, 4-5 April, Ho Chi Minh City, Vietnam : Advances in Planning, Architecture and Construction for Sustainable Development. 482:115-122

المؤلفون: Verba, Volodymyr^Aff14, Kholod, Petro^Aff14

المساهمون: di Prisco, Marco, Series Editor^Aff1, Chen, Sheng-Hong, Series Editor^Aff2, Vayas, Ioannis, Series Editor^Aff3, Kumar Shukla, Sanjay, Series Editor^Aff4, Sharma, Anuj, Series Editor^Aff5, Kumar, Nagesh, Series Editor^Aff6, Wang, Chien Ming, Series Editor^Aff7, Cui, Zhen-Dong, Series Editor^Aff8, Blikharskyy, Zinoviy, editor^Aff9, Koszelnik, Piotr, editor^Aff10, Lichołai, Lech, editor^Aff11, Nazarko, Piotr, editor^Aff12, Katunský, Dušan, editor^Aff13

المصدر: Proceedings of CEE 2023 : Civil and Environmental Engineering and Architecture. 438:456-464

المؤلفون: Bornales, Aldrine Paul P.^{Aff9, Aff10}, Velasco, Mark Arvin P.^{Aff9, Aff12}, Layderos, Jomar A.^{Aff9, Aff11}, Dela Cruz, Orlean G.^Aff9

المساهمون: di Prisco, Marco, Series Editor^Aff1, Chen, Sheng-Hong, Series Editor^Aff2, Vayas, Ioannis, Series Editor^Aff3, Kumar Shukla, Sanjay, Series Editor^Aff4, Sharma, Anuj, Series Editor^Aff5, Kumar, Nagesh, Series Editor^Aff6, Wang, Chien Ming, Series Editor^Aff7, Kang, Thomas, editor^Aff8

المصدر: Proceedings of 5th International Conference on Civil Engineering and Architecture : Proceedings of ICCEA 2022. 369:157-167

المؤلفون: Sheng Liu, Xiangyun Xu, Yilun Zhang, Bukui Zhou, Kezhi Yang

المصدر: Scientific Reports, Vol 14, Iss 1, Pp 1-17 (2024)

مصطلحات موضوعية: Autoclaved aerated concrete, Close-in explosion, Numerical simulation, Damage criterion, Medicine, Science

الوصف: Abstract In this study, we investigated the destructive effect of autoclaved aerated concrete (AAC) masonry walls subjected to close-in explosions. First, full-size refined finite-element models of the AAC masonry wall were established, and the accuracy of the models was verified by comparison with the test results. The destruction pattern and damage characteristics of the AAC wall were studied, and the effects of block size, wall thickness, mortar compressive strength, and explosion distance on the destruction degree of the AAC masonry walls were analyzed. The results showed that the destruction pattern of the AAC masonry wall subjected to close-in explosion manifested as punching damage in the middle of the wall. When the scaled distance remained unchanged, the punching damage area of the AAC masonry wall was positively correlated with the block size and negatively correlated with the wall thickness and mortar compressive strength. When the explosive equivalent remained unchanged and the explosion distance increased, the punching damage area first increased and then decreased. According to the damage mechanism of the AAC masonry wall, a calculation method for predicting the punching damage area of the AAC masonry wall was established, and the accuracy of this method was verified by comparing it with the numerical results. In addition, the damage criterion based on the punching damage area was established to determine the destruction levels of AAC masonry walls.

وصف الملف: electronic resource

Relation: https://doaj.org/toc/2045-2322

URL الوصول: https://doaj.org/article/b144c4a70dea4caaaddb1b75d62a0d80

المؤلفون: Yang Deng, Li Wu

المصدر: Case Studies in Construction Materials, Vol 20, Iss , Pp e02961- (2024)

مصطلحات موضوعية: Autoclaved aerated concrete, Slurry property, Recycled concrete fine powder, Tobermorite, Materials of engineering and construction. Mechanics of materials, TA401-492

الوصف: The recycled concrete fine powder (RFP) after calcination activation not only contains active powder with potential hydration characteristics, but also may cause the limestone contained in the fine powder to form calcium oxide. The effects of TRFP-750 and TRFP-850(RFP calcined at 750 ℃ and 850 ℃) replacing calcium oxide on the preparation and properties of autoclaved aerated concrete (AAC) were investigated in this study. The results showed that when 60% of calcium oxide in quicklime is replaced by TRFP-750 and TRFP-850, AAC with strength greater than 2.5 MPa and density less than 550 kg/m3 can be prepared. The dosage of TRFP will degrade the gas-foaming performance of AAC due to the decrease in temperature and alkalinity of the slurry. At the same content, AAC with TRFP-850 had higher gas-foaming rate due to more free calcium oxide. When the TRFP content is the same, TRFP-850 also leads to a higher compressive strength than the AAC containing TRFP-750. Tobermorite with better crystallinity and the increase of tobermorite content are the main reasons for the higher strength of AAC.

وصف الملف: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S2214509524001128; https://doaj.org/toc/2214-5095

URL الوصول: https://doaj.org/article/d7c02f7b0aa341f7a9bdbdad1c5f2480

المؤلفون: Jorge Varela-Rivera, Juan Cancep-Rodriguez, Luis Fernandez-Baqueiro, Joel Alberto Moreno Herrera

المصدر: Revista ALCONPAT, Vol 14, Iss 2 (2024)

مصطلحات موضوعية: confined walls, autoclaved aerated concrete, scaling, shear behavior, in-plane reverse cyclic loads, Building construction, TH1-9745

الوصف: An experimental study on the shear behavior of autoclaved aerated concrete (AAC) confined masonry walls is presented. A total of five reduced-scale walls were tested in the laboratory under reverse lateral loads. Variables studied were the geometric scaling factor and the aspect ratio of walls. Scales considered were 1:2 and 1:3. Based on the behavior of the reduced- and corresponding full-scale walls experimental scaling factors were determined. Existing geometric scaling factors were compared with corresponding experimental scaling factors. It was concluded that geometric scaling factors can be used to predict the shear strength and maximum shear strength of walls with scales of 1:2 and 1:3. Geometric scaling factors can only be used to predict stiffness and drift ratios associated with the maximum shear strength of walls.

وصف الملف: electronic resource

Relation: https://www.revistaalconpat.org/index.php/RA/article/view/725; https://doaj.org/toc/2007-6835

URL الوصول: https://doaj.org/article/4af1325453cb452f9a8d58940eb25bf7

المؤلفون: Muthusubramanian, Bhuvaneshwari, Neelamegam, Prakhash^{Aff1, IDs11356023299334_cor2}, Ramar, Vijayakumar, Suresh, Vigneshkannan

المصدر: Environmental Science and Pollution Research. 30(49):107533-107548

المؤلفون: Abhilasha^{Aff1, Aff2}, Kumar, Rajesh^{Aff1, Aff2, IDs4006902200569x_cor2}, Lakhani, Rajni^{Aff1, Aff2}, Mishra, Raghav Kumar, Khan, Shahnavaz

المصدر: International Journal of Concrete Structures and Materials. 17(1)