Adaptação transcultural do shoulder rating questionnaire para a língua portuguesa (srq-pt): tradução; validação; análise da consistência interna e replicabilidade.

Shoulder dysfunctions originate functional limitations that compromise the performance of daily living activities by means of restricting the participation of individuals with this clinical condition. Therefore, functional/quality of life (QOL) measures are essential in the evaluation of treatment outcome. The Shoulder Rating Questionnaire (SRQ) is a self-administered QOL instrument designed in the USA with the purpose of assessing symptoms and function of the shoulder. The present study aims to translate and adapt the original version of the SQR into the Portuguese language of Europe and test its psychometric properties. This study was conducted at Hospital Cuf Descobertas - Department of Orthopedics. There were consecutively recruited fifty-five users (n = 55) diagnosed with different disorders of the shoulder. The original version of the SRQ was translated and adapted in accordance with the international standards. The results of internal consistency using Cronbach's coefficient α are: 0.91 for the total questionnaire, and of 0.84; 0.92; 0.82; 0.86 for the domains: pain, daily living and domestic activities, recreational and athletic activities, global assessment and work, respectively. In the calculation of the test-retest reliability - Spearman-Brown, the coefficient obtained for the total questionnaire was r=0.90, and r=0.78 for global assessment, r=0.83 for pain, r=0.88 for daily living and domestic activities, r=0.92 for recreational and athletic activities, and r=0.94 for work. The values of Cronbach's coefficient α at the 30th day was .94. The empirical data obtained show that the SRQ-PT is a valid and reliable measurement instrument in the assessment of various disorders of the shoulder

Increased durability of concrete made with fine recycled concrete aggregates using superplasticizers

This paper evaluates the influence of two superplasticizers (SP) on the durability properties of concrete made with fine recycled concrete aggregate (FRCA). For this purpose, three families of concrete were tested: concrete without SP, concrete made with a regular superplasticizer and concrete made with a high-performance superplasticizer. Five volumetric replacement ratios of natural sand by FRCA were tested: 0%, 10%, 30%, 50% and 100%. Two natural gravels were used as coarse aggregates. All mixes had the same particle size distribution, cement content and amount of superplasticizer. The w/c ratio was calibrated to obtain similar slump. The results showed that the incorporation of FRCA increased the water absorption by immersion, the water absorption by capillary action, the carbonation depth and the chloride migration coefficient, while the use of superplasticizers highly improved these properties. The incorporation of FRCA jeopardized the SP's effectiveness. This research demonstrated that, from a durability point of view, the simultaneous incorporation of FRCA and high-performance SP is a viable sustainable solution for structural concrete production.info:eu-repo/semantics/publishedVersio

Rheological behaviour of concrete made with fine recycled concrete aggregates - Influence of the superplasticizer

This paper evaluates the influence of two superplasticizers (SP) on the rheological behaviour of concrete made with fine recycled concrete aggregates (FRCA). Three families of concrete were tested: family CO made without SP, family Cl made with a regular superplasticizer and family C2 made with a high-performance superplasticizer. Five replacement ratios of natural sand by FRCA were tested: 0%, 10%, 30%, 50% and 100%. The coarse aggregates were natural gravels. Three criteria were established to design the concrete mixes' composition: keep the same particle size distribution curves, adjust the water/cement ratio to obtain a similar slump and no pre-saturation of the FRCA. All mixes had the same cement and SP content. The results show that the incorporation of FRCA significantly increased the shrinkage and creep deformation. The FRCA's effect was influenced by the curing age. The reference concrete made with natural sand stabilizes the creep deformation faster than the mixes made with FRCA. The incorporation of superplasticizer increased the shrinkage at early ages and decreased the shrinkage at 91 days of age. The regular superplasticizer did not improve the creep deformation while the high-performance superplasticizer highly improved this property. The incorporation of FRCA jeopardized the SP's effectiveness. This study demonstrated that to use FRCA and superplasticizer for concrete production it is necessary to take into account the different rheological behaviour of these mixes. (C) 2015 Elsevier Ltd. All rights reserved