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Endah Safitri, Ridan Adi Kusworo and Stefanus Adi Kristiawan
Repair materials have been developed in this research by adding micro-synthetic fibers in cement-based mortar. In addition, accelerator is incorporated in the mortar to obtain high early strength of the repair materials. Their shrinkage behavior is of in...
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Michal Kloiber, Dita Frankeová, Zuzana Slí?ková and Jirí Kunecký
The paper describes a method of structural repair to damaged elements of protected timber houses. Emphasis is laid on minimum intervention in the valuable material that needs to be preserved to the maximum possible extent, especially without larger inter...
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Teng Zhao, Hongxiu Du and Linhao Wang
Experiments such as microbial activation culture, subculture selection, and fire damage repair of cement mortar specimens were conducted to investigate the repairing effect of Sporosarcina pasteurii as a repair agent for fire-damaged cracks in cement mor...
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Masumi Inoue, Heesup Choi, Yuhji Sudoh, Koichi Ayuta
Pág. 22 - 24
This study aimed to clarify the leaching properties of nitrite ions in nitrite-type repair materials exposed to rainfall. Repaired concrete specimens were prepared for leaching tests using a lithium nitrite solution, and the amounts of leaching and penet...
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Federico Leonelli, Paola Di Mascio, Antonello Germinario, Francesco Picarella, Laura Moretti, Mauro Cassata and Alberto De Rubeis
The attention to rapid pavement repair has grown fast in recent decades: this topic is strategic for the airport management process for civil purposes and peacekeeping missions. This work presents the results of laboratory and on-site tests for rapid run...
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Turibio José da Silva, Wemerton Evangelista
Pág. Page 113 - 120
This work is the result of a research of structural behavior of reinforced concrete columns subjected to a process of partial repair, with sustained load during the whole process. The repair has been executed with mixed material, constituted by a mortar ...
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A. M. Zinkevych
Pág. 175 - 176
The structure of successive optimization is considered on the example of development of formula for injection repair mixture in the shape of concrete-based dry mortar.
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Eddy Yusslee and Sherif Beskhyroun
Alkali-activated materials (AAMs) have been widely used as an alternative to Portland cement. This production of AAMs emits lesser carbon dioxide by utilizing industrial waste products to make this cement binder technology greener and more sustainable. T...
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Tullio Giuffrè, Marinella Fossetti and Alfio Francesco Siciliano
Generally, during maintenance operations on bridges and motorway viaducts, the circulation of vehicles is limited or suspended. This causes significant economic losses due to the increase in the costs of transport: delays, increased fuel consumption, hig...
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O. V. Anufrieva,B. H. Klochko
Pág. 149 - 153
The article is about the results of experimental-and-theoretical research of usefulness of mortar and concrete mixes for underwater repair works. It is shown that the developed compositions of hydraulic engineering concretes are characterized by high eff...
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?. ?. Pshinko,A. V. Krasniuk,T. V. Ulchenko,B. H. Klochko
Pág. 148 - 151
The technology of mortar injection into a concrete element of construction is developed in the paper. The different methods of applying the repair polymeric mortar on the base of alkylrezorcine on concrete surface of a construction, which are used depend...
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Yan?e Yang, Bo Pang, Yunsheng Zhang, Minghui Wang, Gaixia Miao and Aoxiang Zhou
The properties of a large number of concrete infrastructures in China are deteriorating year by year, raising the need for repairing and strengthening these infrastructures. By introducing waterborne polymers into a cement concrete system, brittle cracks...
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Enio Pazini
The coating of the reinforcement (primer) is a part of a complete system for concrete repair and, in fact, is frequently used. In spite of this, few studies have been devoted to study their efficiency to protect the reinforcement against further corrosio...
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This paper presents the experimental results of the structural behavior of four reinforced concrete beams with corroded steel reinforcement at service loads. One beam was non-corroded, one beam was corroded under an accelerated electrochemical technique ...
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M. S. M. Al-kahtani, Han Zhu, Yasser E. Ibrahim, S. I. Haruna and S. S. M. Al-qahtani
Polymer-modified cement mortar has been increasingly used as a runway/road pavement repair material due to its improved bending strength, bonding strength, and wear resistance. The flexural strength of polyurethane?cement mortar (PUCM) is critical in ach...
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Panuwat Joyklad, Hafiz Ahmad Waqas, Abdul Hafeez, Nazam Ali, Ali Ejaz, Qudeer Hussain, Kaffayatullah Khan, Arissaman Sangthongtong and Panumas Saingam
Many masonry structures are constructed with cement clay interlocking brick (CCIB) due to its added benefits. Recent research has demonstrated the vulnerability of brick masonry walls against seismic loading. Various strengthening materials and technique...
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Albert A. Griño, Jr., Hannah Shane P. Soriano, Michael Angelo B. Promentilla and Jason Maximino C. Ongpeng
This study explored self-healing in geopolymer mortar cured at ambient temperature using polypropylene fibers and bacterial co-cultures of Bacillus subtilis and Bacillus megaterium. Damage degree, compressive strength, ultrasonic pulse velocity (UPV), st...
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Idris Bedirhanoglu
One of the reasons that cause the collapse of buildings is deficient short columns, which need to be retrofitted to prevent the collapse of the building in a potential earthquake. External reinforced concrete (RC), steel plates, and fiber-reinforced poly...
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Wenting Mao, Chunpeng Cao, Xincheng Li, Jueshi Qian and Yudong Dang
Magnesium ammonium phosphate cement (MAPC) prepared with ammonium dihydrogen phosphate (NH4H2PO4, ADP) and dead-burned Magnesium oxide (MgO) is a new type of rapid patch repair material for concrete structures. In order to reduce the material costs of MA...
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