8 research outputs found
Influences des agents de viscosite sur les paramètres rheologiques intrinseques des mortiers des bétons autoplaçants
No full text120 f.30 cm. (+ CD- Rom)Les bétons autoplaçants se distinguent par une fluidité extrême, permettant leur mise en
place sans vibration. Les additions minérales et les adjuvants organiques sont deux
composants indispensables pour la formulation des bétons autoplaçants ; ce sont les
deux composants qui régissent le comportement rhéologique des bétons. Les additions
minérales sont introduites dans les bétons pour améliorer leur comportement
rhéologique à l’état frais, mais aussi pour participer aux propriétés mécaniques et de
durabilité des bétons, notamment dans le cas ou elles sont actives. Dans cette étude,
deux séries d’essais ont été effectuées sur des pâtes autoplaçantes composées de ciment
et d’ajouts ménagers, tels que les déchets de marbre, le laitier granulé et le verre à
bouteille, comme addition minérale. La première série d’essais a été réalisée à l'aide des
méthodes empiriques basées sur des essais d’ouvrabilité tels que le mini-cône et le
cône de Marsh, la deuxième série consiste à déterminer les paramètres rhéologiques
des mêmes pâtes à savoir le seuil de cisaillement et la viscosité à l’aide du rhéomètre
HAAKE RHEOSTRESS 1.Une corrélation entre les résultats obtenus sur les essais
empiriques et ceux du rhéomètre sur les différentes mélanges en considérant l’influence
des superplastifiants et d’agent de viscosité) est proposée
Rheological, mechanical and durability properties of mortar containing brick waste as a partial replacement of sand
No full textThe investigation presented in this paper focuses on the feasibility of employing brick waste (BW), a byproduct of limestone, to make self-compacting mortar (SCM). The principle goal of this study contributes in increasing economic and environmental value by replacing sand with co-products and optimizing their handling and management. Six alternative mortar mix proportions, including BW at rates of 0 %, 5 %, 10 %, 15 %, 20 %, and 25 %, are tested for rheological properties (flow time, yield stress and viscosity), the mechanical (compressive strength and flexural strength), durability (water absorption/porosity, chloride penetration, sulfate resistance and SEM analysis). The deep in visitation showed that a SCM with a yield stress of 13.8 Pa, a 25 % BW replacement rate, and a viscosity of 11.7 Pa.S may reach a flow time of 74.2–64.1 S. In addition, mortars containing 25 % BW had a maximum compressive strength and flexural strength of 36.9 MPa and 4.03 MPa at 28 days, representing an 11.3 % and 39.2, respectively drop over the reference mortar BW0 %. The results showed the water absorption and the depth of chloride penetration increased by 86.2 % and 36 %, respectively. The sulfate resistance was decreased by 39 % as compared to those of the reference mortar (BW0 %). Scanning Electron Microscopy (SEM) observations showed that the BW25 % mortar contains several pores compared to those of BW10 % and BW0 %
The rheological properties of modified self-compacting cementitious paste
No full textSelf-compacting concrete (SCC) development marks an important step towards efficiency and conditions working in construction sites and in the precast industry. SCC easily flows into more complex shapes and through reinforcing bars, reduces the labor required for placement; no vibration is required to ensure proper concrete compaction. This concrete contains a high binder volume, which is controlled by their rheological behavior. The paste binders consists Portland cement (with or without additional cementations’ materials), water, chemical additives and fillers. In this study, two tests series were carried out on self-compacting cement pastes made with marble waste additions as addition minerals. The first series of this survey was to determine the flow dough time of using a Marsh cone, the second series was to determine the same dough rheological parameters, namely the elastic limit and the plastic viscosity at using a rheometer. The results of this survey allowed us to study of the elastic limit evolution, the viscosity and the marsh flow time cone paste as a paste composition function
KONSTRUKSI PEMAHAMAN HADIS TENTANG JIHAD MENURUT YUSUF AL-QARADHAWI (STUDI ATAS BUKU FIQIH JIHAD)
No full textThe various editorials of the texts bring out the various meanings of jihad from various perspectives of the scholars. But apart from that these understandings also become socio-religious problems. The rise of terrorism cases in Indonesia and other countries is associated with mandatory orders for jihad for all Muslims in the world. This has sparked hostility for all religious communities from various backgrounds, including a well-known contemporary scholar, Yusuf al-Qaradawi. so that his work appeared with the title Fiqh Al-Jihad: Dirasah Muqaranah li Ahkamihi wa falsafatihi fi Dlaui Al-Qur'ani wa Al-Sunnah.
From the book Fiqh Jihad, the author tries to explore the understanding of hadiths about jihad according to Yusuf al-Qaradawi. In this case, the formulation of the problem is how is Yusuf al-Qaradawi's understanding of the hadith about jihad in the book Fiqh Jihad? And what is the relevance of Yusuf al-Qaradawi's understanding of the phenomenon of jihad that occurs in Indonesia? This research is a type of library research by looking for literature studies related to Yusuf al-Qaradawi and his essays, especially those that discuss his views on jihad in the book Fiqh Jihad and his understanding of hadith.
Yusuf al-Qaradawi's understanding of hadith jihad uses thematic methods, namely collecting hadith quotations and safely verifying them from reliable sources. The approach used by Yusuf al-Qaradawi in understanding the hadith is the hermeneutic approach. Preaching using today's technology such as social media is an effort to spread Islamic teachings, and also to defend the country's economy, including today's jihad, according to Yusuf al-Qaradawi's meaning of jihad
PROGRAM KONSELING MUI GRESIK DI PENGADILAN AGAMA GRESIK DALAM PENYELESAIAN PERKARA DISPENSASI NIKAH (PERIODE JUNI 2021-JUNI 2022)
No full textGresik is one of the cities with the most cases of underage marriage in East Java. This can be caused by various factors, such as lack of religious knowledge, family, promiscuity, and etc. This underage marriage can have an impact on early divorce if knowledge of household life is not given before. Many things have been done to overcome it, the one is Gresik Religious Court which carries out a program with the Gresik MUI in the implementation of counseling related to domestic life after marriage. This is a form of concern for the Gresik Religious Court in an effort to reduce the number of marriage dispensation applications in there. So it is interesting to study how the implementation of the counseling program is and whether the existence of the counseling program affects the settlement of the application for marriage dispensation in Gresik Regency in the period June 2021-June 2022.
In this study, the authors used field research with qualitative methods, like interviewed with several sources such as the Gresik Religious Court Judge, MUI Gresik, and a sample of 5 couples who applied for marriage dispensation who had had done counseling with MUI Gresik based on their respective cases. This research is descriptive in nature, where the author describes the results of interviews with some of the informants above to get an idea of what is done in practice, and analyzes it with a sociological approach with the theory of legal effectiveness, awareness and legal compliance from Soerjono Soekanto.
The results showed that first, the implementation of the "selina" counseling program was carried out after the applicant filed his case in court and before the trial stage. The material presented by MUI Gresik is in the form of long-term understanding related to religion, marriage, etc. Second, in terms of the attitude of the applicants for the marriage dispensation, counseling guidance by the Gresik MUI at the Gresik Religious Court did not show a change in the legal attitude of the parties, they still continued their case to the trial stage. However, in terms of providing an understanding, the applicants obtained legal knowledge from the material presented by the MUI regarding domestic life after marriage. The existence of a counseling program shows that the elements of legal substance, law enforcement, and facilities are getting better and stronger. However, on the other hand, it shows that cultural factors are still strong and there is a lack of public knowledge regarding the minimum age for marriage, the timing of the program is not strategic, and the community association is still uncontrolled which leads to the ineffectiveness of resolving marriage dispensation cases
The rheological properties of modified self-compacting cementitious paste
No full textThe development of self-compacting concrete (SCC) marks a huge step towards improved efficiency and working conditions on construction sites and in the precast industry. SCC flows easily into more complex shapes and through reinforcement bars, reduces the manpower required for the placement; no vibration is required to ensure correct compaction of concrete. This concrete contains a high volume of binder, which is controlled by their rheological behaviour. The paste consists of binders (Portland cement with or without supplementary cementitious materials), water, chemical admixtures and fillers. In this study, two series of tests were performed on self-compacting cement pastes made with marble waste additions as mineral addition. The first series of this investigation was to determine the flow time of paste using Marsh cone, the second series was to determine the rheological parameters of the same paste namely yield stress and plastic viscosity using rheometer. The results of this investigation allowed us to study the evolution of the yield stress, viscosity and the flow time Marsh cone paste as a function of the composition of the paste.Self-compacting concrete (SCC) development marks an important step towards efficiency and conditions working in construction sites and in the precast industry. SCC easily flows into more complex shapes and through reinforcing bars, reduces the labor required for placement; no vibration is required to ensure proper concrete compaction. This concrete contains a high binder volume, which is controlled by their rheological behavior. The paste binders consists Portland cement (with or without additional cementations’ materials), water, chemical additives and fillers. In this study, two tests series were carried out on self-compacting cement pastes made with marble waste additions as addition minerals. The first series of this survey was to determine the flow dough time of using a Marsh cone, the second series was to determine the same dough rheological parameters, namely the elastic limit and the plastic viscosity at using a rheometer. The results of this survey allowed us to study of the elastic limit evolution, the viscosity and the marsh flow time cone paste as a paste composition function
Uji komparasi perhitungan gerhana matahari global Muhammad Wasil dan K.H. Ahmad Ghozali
No full textMuhammad Wasil dan K.H. Ahmad Ghozali memiliki riwayat pernah belajar ilmu falak kepada Kiai Noor Ahmad Jepara (alm) pengarang kitab falak Nur al-Anwar. Meski begitu, Muhammad Wasil dan K.H. Ahmad Ghozali memiliki metode yang berbeda dalam memprediksi fenomena gerhana Matahari. Kedua metode perhitungan ini sering digunakan sebagai referensi dalam memprediksi fenomena gerhana Matahari, meskipun memiliki hasil akhir yang berbeda. Penelitian ini dimaksudkan untuk menjawab pertanyaan: (1) Bagaimana metode perhitungan gerhana Matahari global Muhammad Wasil dan K.H. Ahmad Ghozali? (2) Bagaimana perbandingan tingkat akurasi dari metode perhitungan gerhana Matahari global Muhammad Wasil dan K.H. Ahmad Ghozali? (3) Bagaimana kelebihan dan kekurangan dari metode perhitungan gerhana Matahari global Muhammad Wasil dan K.H. Ahmad Ghozali? Permasalahan dibahas melalui studi pustaka dengan pengumpulan data secara dokumentasi dan wawancara. Semua data dianalisis dan dikomparasikan dengan hasil NASA sebagai acuan tingkat akurasi.
Penelitian ini menyimpulkan: Yang pertama, metode perhitungan Muhammad Wasil dan K.H Ahmad Ghozali memiliki persamaan menggunakan konsep sistem koordinat ekliptika geosentrik, selain itu terdapat perbedaan antara kedua metode perhitungan meliputi konsep bentuk Bumi yang digunakan, sumber data, ketentuan delta T(∆T), dan pendekatan yang digunakan dalam metode perhitungan. Yang kedua, tingkat akurasi metode perhitungan gerhana Matahari global K.H. Ahmad Ghozali lebih tinggi daripada metode perhitungan Muhammad Wasil dalam memprediksi fenomena gerhana Matahari. Tingkat akurasi ini berdasar pada perhitungan keadaan greatest eclipse yang berdampak langsung terhadap pelaksanaan salat gerhana. Yang ketiga, metode perhitungan gerhana Matahari global Muhammad Wasil memiliki kelebihan kontak yang dihitung lebih lengkap, dapat menggambarkan peta pergerakan gerhana, tingkat akurasi lebih tinggi dalam perhitungan kontak umbra, sedangkan terdapat kekurangannya, yaitu sulit diimplementasikan tanpa bantuan program sebagai alat bantu. Pada metode perhitungan gerhana Matahari global K.H. Ahmad Ghoazali memiliki kelebihan diantaranya metode perhitungan lebih praktis, memiliki tingkat akurasi tinggi untuk kontak penumbra dan puncak gerhana (greatest eclipse), sedangkan kekurangannya, yaitu akurasi rendah dalam perhitungan kontak umbra gerhana Matahari global.
Kata Kunci: Muhammad Wasil, K.H. Ahmad Ghozali, gerhana Matahari global
ABSTRACT:
Muhammad Wasil and K.H. Ahmad Ghozali has a history of studying astronomy with Kiai Noor Ahmad Jepara (deceased), author of the book of astronomy Nur al-Anwar. Even so, Muhammad Wasil and K.H. Ahmad Ghozali has a different method for predicting the phenomenon of a solar eclipse. These two calculation methods are often used as references in predicting solar eclipse phenomena, even though they have different final results. This research is intended to answer the questions: (1) What is the method for calculating global solar eclipses by Muhammad Wasil and K.H. Ahmad Ghozali? (2) What is the comparison of the level of accuracy of the global solar eclipse calculation method of Muhammad Wasil and K.H. Ahmad Ghozali? (3) What are the advantages and disadvantages of the global solar eclipse calculation method Muhammad Wasil and K.H. Ahmad Ghozali? Problems are discussed through literature study by collecting data through documentation and interviews. All data is analyzed and compared with NASA results as a reference for accuracy levels.
This research concludes: Firstly, the calculation methods of Muhammad Wasil and K.H Ahmad Ghozali have similarities using the concept of a geocentric ecliptic coordinate system, apart from that there are differences between the two calculation methods including the concept of the shape of the Earth used, data sources, provisions for delta T(∆T), and the approach used in the calculation method. Second, the level of accuracy of the global solar eclipse calculation method K.H. Ahmad Ghozali's calculation method is higher than Muhammad Wasil's in predicting the phenomenon of a solar eclipse. This level of accuracy is based on calculating the state of the greatest eclipse which has a direct impact on the implementation of eclipse prayers. Third, Muhammad Wasil's method for calculating global solar eclipses has the advantage of contacts being calculated more completely, being able to depict a map of the movement of the eclipse, a higher level of accuracy in calculating umbral contacts, while there are disadvantages, namely that it is difficult to implement without the help of a program as a tool. In the calculation method for global solar eclipses, K.H. Ahmad Ghoazali has advantages, including a more practical calculation method, having a high level of accuracy for penumbral contact and the peak of the eclipse (greatest eclipse), while his disadvantages are low accuracy in calculating umbral contact for global solar eclipses.
Keywords: Muhammad Wasil, K.H. Ahmad Ghozali, global solar eclipse
الملخص
محمد واصل وكياي الحاج أحمد غزالي لهم تاريخ في دراسة علم الفلك مع كياي نور أحمد جيبارا (متوفى)، مؤلف الكتاب الفلكي نور الأنوار. ومع ذلك، فإن محمد واصل وكياي الحاج أحمد غزالي لديهما طرق مختلفة للتنبؤ بظاهرة كسوف الشمس. غالبًا ما يتم استخدام هاتين الطريقتين الحسابيتين كمراجع في التنبؤ بظواهر كسوف الشمس، على الرغم من اختلاف نتائجهما النهائية. يهدف هذا البحث إلى الإجابة على الأسئلة التالية: (1) ما هي طريقة حساب كسوف الشمس العالمي لمحمد واصل وكياي الحاج أحمد غزالي؟ (2) كيف يمكن مقارنة مستوى دقة طرق حساب كسوف الشمس العالمي لمحمد واصل وكياي الحاج أحمد غزالي؟ (3) ما هي مميزات وعيوب طريقة حساب كسوف الشمس العالمي لمحمد واصل وكياي الحاج أحمد غزالي؟ تتم مناقشة المشاكل من خلال دراسة الأدبيات من خلال جمع البيانات من خلال الوثائق والمقابلات. ويتم تحليل جميع البيانات ومقارنتها بنتائج وكالة ناسا كمرجع لمستويات الدقة.
ويخلص هذا البحث إلى ما يلي: أولاً، هناك أوجه تشابه بين طريقتي الحساب لمحمد واصل وكياي الحاج أحمد غزالي باستخدام مفهوم نظام الإحداثيات الكسوف لمركز الأرض، عدا عن ذلك هناك اختلافات بين طريقتي الحساب بما في ذلك مفهوم شكل الأرض المستخدم. ومصادر البيانات وأحكام دلتا T(∆T) والنهج المستخدم في طريقة الحساب. ثانيا، مستوى دقة طريقة حساب كسوف الشمس العالمي لكياي الحاج أحمد غزالي أعلى من طريقة حساب محمد واصل في التنبؤ بظاهرة كسوف الشمس. ويعتمد هذا المستوى من الدقة على حساب حالة الكسوف الأكبر الذي له تأثير مباشر على تنفيذ صلاة الكسوف. ثالثا، تتميز طريقة محمد واصل لحساب كسوف الشمس العالمي بميزة احتساب الاتصالات بشكل أكثر اكتمالا، والقدرة على تصوير خريطة لحركة الكسوف، ومستوى أعلى من الدقة في حساب الاتصالات الظلية، في حين أن هناك عيوب، وهي أن فمن الصعب تنفيذها دون مساعدة البرنامج كأداة. تتميز طريقة كياي حاج أحمد غزالي لحساب كسوف الشمس العالمي بمزايا، بما في ذلك طريقة حسابية أكثر عملية، وجود مستوى عالٍ من الدقة في الاتصال شبه الظلي وذروة الكسوف (الكسوف الأكبر)، في حين أن العيب هو انخفاض الدقة في حساب الاتصال الظلي لكسوف الشمس العالمي.
الكلمات المفتاحية: محمد واصل، أحمد غزالي، كسوف الشمس العالمي
Qirā’at In Tafsīr Al-Jalālain Book; A Descriptive Study of Ṣighat Wafi Qira`Atin in the 30th Juz.
No full textThe differences in dialects owned by the Arabs result in differences in the way the Qur'an is recited or often known as differences in qirā'at. When Muslims began to develop, the study of religious sciences also developed, such as the study of the verses of the Qur'an to be interpreted, when interpreting the verses of the Qur'an, many mufassirs have attention to differences in qirā' at, such as in the book of Tafsir al-Jalâlain. Problems arise when encountering the phrase wa fī qirā'atin in the book of Tafsīr al-Jalālain because it does not explain who is referred to in the phrase so that it does not know the status of the validity of the qirā'at, whether it is mutawatir, ahad or even syadz. This paper uses library research, while the data collection technique used is document review technique, then analyzed using descriptive analytical method, with a deductive mindset, namely looking for lafadz wa fī qirā'atin in the book of Tafsīr al-Jalālain in 30th Juz then looking for the status of qira`ah. The benefits of this research include introducing the imams of qirā'at and their positions, especially those contained in the memorization of wa fī qirā'atin in the book of Tafsīr al-Jalālain in juz 30. As for the results of this research paper, the author found the phrase wa fī qirā'atin in the book of Tafsīr al-Jalālain in the 30th Juz. imams who contained in it are imams of qira`ah arba`ah asyrah. Meanwhile, when viewed from the status of the authenticityof the qirā'at, it has a mutawatir status because in each lafadz it contains the name of one or more of the imams of the qira`ah sab`ah
