Revista Ingeniería de Construcción最新文献_第9页

EVALUACIÓN DE LA FUNCIÓN DE LA PREFABRICACIÓN EN EDIFICIOS DE GRAN ALTURA 预制在高层建筑中的作用评价

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00012.21

Seyedkazem Seyedebrahimi, Alireza Mirjalili, Abolfazl Sadeghian

引用次数: 0

Evaluación de métodos de pronóstico EVM/ES en proyectos de construcción hospitalaria 医院建设项目EVM/ES预测方法评价

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.000243.21

Flavio R. Durón González, Luis Arturo Rivas Tovar, Magali Cárdenas Tapia

{"title":"Evaluación de métodos de pronóstico EVM/ES en proyectos de construcción hospitalaria","authors":"Flavio R. Durón González, Luis Arturo Rivas Tovar, Magali Cárdenas Tapia","doi":"10.7764/ric.000243.21","DOIUrl":"https://doi.org/10.7764/ric.000243.21","url":null,"abstract":"The objective is to evaluate 22 time and 12 cost forecasting methods based on Earned Value (EVM/ES) under three assumptions of future performance and in terms of the opportunity, accuracy, and stability of the forecasts. Little attention has been paid in the literature to future performance assumptions and evaluation under these parameters. Method: A total of 6,951 entry data points were used applying statistical measures of error and dispersion based on empirical evidence from 34 hospital construction projects in Mexico. Findings: Using contractor payment estimates as Actual Cost (AC), the more predictive time forecasting methods are those under the assumption that future performance will be as planned and, for cost, under the SPI(t) Schedule Performance Index. Relevance: The research shows the conditions under which the diverse methods offer timely and realistic predictions to be used as a reference in the monitoring and control of hospital construction projects. The limitation of the research consists of using durations and costs from completed projects without considering the possible changes formalized in contractual modifications throughout project’s execution. Future research using EVM/ES input data from the project owner's perspective is suggested.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114158213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic design for performance in non-structural elements using the direct displacement methodology in reinforced concrete buildings 钢筋混凝土建筑中使用直接位移法进行非结构构件抗震设计

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00027.21

G. Collantes

{"title":"Seismic design for performance in non-structural elements using the direct displacement methodology in reinforced concrete buildings","authors":"G. Collantes","doi":"10.7764/ric.00027.21","DOIUrl":"https://doi.org/10.7764/ric.00027.21","url":null,"abstract":"One of the under-investigated branches of performance design approaches is the design of non-structural elements. Non-structural elements are all those that do not participate directly in the structural resistance of a building, however, they present damage in the event of an earthquake. One of the methods developed in recent years is through direct displacement, which consists of restricting the non-structural element by giving it a maximum allowable displacement and calculating the allowable force by Hooke's law. Therefore, the nonstructural elements for different configurations of a reinforced concrete building were designed using the direct displacement methodology and compared with the design according to the force-based design. Five reinforced concrete buildings (structural wall system) with the same floor were modeled for five different seismic movements and the design was carried out by the two methods for a certain anchoring system. In conclusion, the design based on direct displacement is more efficient than the traditional design, since it considers inelastic parameters. In addition, any non-structural element must be designed by both methods and apply the envelope criteria so as not to violate local regulations.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123807176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STRUCTURAL CONCRETE MODIFIED WITH SCALLOP SHELL LIME 用扇贝石灰改性结构混凝土

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00010.21

Ronal Alex Mauricio Villarrial, Marlon Gaston Farfan Cordova

引用次数: 0

PHOTOCATALYTIC MORTAR WITH TIO2 FOR THE REDUCTION OF AIR POLLUTANTS PRODUCED BY VEHICULAR EMISSIONS 二氧化钛光催化砂浆，用于减少车辆排放产生的空气污染物

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00014.21

Edwin Jhon Aquise, Katherine Lissette Chirinos Peralta

引用次数: 0

Un enfoque fuzzy para la autoevaluación en micro y pequeñas empresas de construcción 小微建筑企业自我评价的模糊方法

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00028.21

P. Dhanabal, K. S. Sushmitha, P. Narendra Reddy

{"title":"Un enfoque fuzzy para la autoevaluación en micro y pequeñas empresas de construcción","authors":"P. Dhanabal, K. S. Sushmitha, P. Narendra Reddy","doi":"10.7764/ric.00028.21","DOIUrl":"https://doi.org/10.7764/ric.00028.21","url":null,"abstract":"Este estudio evalúa las características de la durabilidad del ferrocemento mezclado con mortero de geopolímeros después de ser sometido al fuego. El ferrocemento fue preparado con mortero de geopolímeros y se comparó con el ferrocemento convencional preparado solo con mortero de cemento. Previamente, se estandarizó la concentración molar de la solución de hidróxido de sodio usada para preparar el mortero de geopolímeros mediante la resistencia residual de los cubos de mortero preparados con diversas concentraciones de NaOH. Se determinó y comparó la resistencia residual a flexión de probetas de hormigón preparadas con diferentes porcentajes en volumen (1,5%, 1,8% y 2,1%) de ferro-geopolímeros y ferrocemento, las que luego fueron sometidas durante dos horas a tres niveles de temperatura entre los 300°C y 900°C. Además, probetas con los mismos porcentajes en volumen fueron expuestas a temperaturas sobre los 900°C con el objetivo de determinar su resistencia residual al impacto. Se determinaron las características de la resistencia al fuego de las probetas en términos de Resistencia residual a flexión, resistencia residual al impacto y pérdida de peso. En todos los aspectos, las probetas preparadas con ferro-geopolímeros mostraron un comportamiento superior a las probetas convencionales de ferrocemento.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"59 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126079334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Estructural performance using Nonlinear Static Analysis applied in an infrastructure. 基于非线性静力分析的基础设施结构性能评价。

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00066.21

N. M. Gallardo Barreto

引用次数: 0

Statistical Characteristics of compressive strength of Normal & High strength concrete and concrete made with recycled aggregate 普通、高强混凝土和再生骨料混凝土抗压强度统计特性

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00041.21

P. Ojha, P. Singh, B. Singh, A. Singh, A. Sagar, R. Yadav

{"title":"Statistical Characteristics of compressive strength of Normal & High strength concrete and concrete made with recycled aggregate","authors":"P. Ojha, P. Singh, B. Singh, A. Singh, A. Sagar, R. Yadav","doi":"10.7764/ric.00041.21","DOIUrl":"https://doi.org/10.7764/ric.00041.21","url":null,"abstract":"The paper presents the statistical analysis on the compressive strength of concrete with strength ranging from 30 MPa to 130 MPa. To obtain these concrete strengths, concrete mixes with virgin aggregates were prepared with four different wate r to cementitious content (w/c) ratios i.e., 0.45, 0.36, 0.24, and 0.18. With w/c ratio of 0.45, a mix is also designed using recycled construction and demolition coarse aggregate to compare statistical characteristics with respect to concrete made using virgin aggregates. The presented statistical analysis includes measure of central tendency, dispersion of the data, distribution shape properties, and precision of the mean. A normal and a log-normal distribution has been established and validated for the experimental data set of all the mixes. A correlation has also been established for the compressive strength of 100mm cube and 150mm cube. Analysis shows an increase in dispersion of data with increase in the mean compressive strength of the mix. The mix with Construction and demolition waste aggregate shows a higher standard deviation than the mix with virgin aggregates at the same w/c ratio. The correlation curve for the compressive strength of 100 mm and 150 mm size cubes, shows a conversion factor of 1.04, suggesting an insignificant difference of the compressive strength values of 100 mm and 150 mm cubes for the mix studied.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128944699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Mixed coating mortars using tire rubber: performance in the face of water 混合涂料砂浆采用轮胎橡胶:在面对水的性能

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00060.21

C. A. Sakamoto, C. Fioriti, L. Pagoto, J. Akasaki, J. L. Pinheiro Melges

引用次数: 0

Experimental design for the optimization of dry-pressed ceramic bricks (Dry-Press) 干压砖(Dry-Press)优化试验设计

Revista Ingeniería de Construcción Pub Date : 1900-01-01 DOI: 10.7764/ric.00036.21

D. Guamán Lozada, A. Rodríguez Pinos, C. Santiana, B. Yyuquilema

{"title":"Experimental design for the optimization of dry-pressed ceramic bricks (Dry-Press)","authors":"D. Guamán Lozada, A. Rodríguez Pinos, C. Santiana, B. Yyuquilema","doi":"10.7764/ric.00036.21","DOIUrl":"https://doi.org/10.7764/ric.00036.21","url":null,"abstract":"One of the most common products in the construction industry is brick due to its advantages over other building materials such as blocks. In developing countries like Ecuador, brick is handcrafted and is the source of income for thousands of families. These bricks lack a systematized process that optimizes resources to make a brick that meets local regulations. This study evaluates the use of the different raw materials used in production through experimental designs to determine the amount of optimal components locally available (“White Clay,” “Black Clay,” “Water”) and achieve the maximum compressive strength in dry-pressed ceramic bricks. This research also identifies the behavior of the compressive strength based on the compaction pressure in the molding stage, concluding that the model that best fits the behavior is a quadratic model, and from the trace plot, it was observed that compared with “White Clay,” “Black Clay” contributes further to the brick strength. The optimal amount of components to meet the 6 MPa pressure standard required in the brick was 5% water, 85% “Black Clay” and 10% “White Clay.” The pressure value required in the compaction stage was 4.9Mpa (712psi,) and greater strength can be achieved by only adding “Black Clay” and water.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121573668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0