مجلة العمارة والتخطيط
استعراض
مقالة وصول حر Developing A Modern Technique for Clayey Constructio(دار جامعة الملك سعود للنشر, 7/1/1431) Mokhtar Ali Abdulhafiz AbdoThe fierce damages that were caused by the loam buildings due to the floods disaster in Wadi-Hadhramaut in 2008 and the interest of many employers to obtain modern loam walls of less thickness and high resistance to denudation factors, in addition to the unavailability of researches specialized in checking the effects of the climatic conditions on the loam resistance; all those were the most important motives to carry out this research.For this, the researcher's aims have been summarized in gathering and documentation the information and lore about the loam construction in Yemen; not only to use them in conserving the existing buildings but also to develop loam building of modern lasting techniques which fulfills the requirements of the age. Moreover, the discovery of the effects of the climatic conditions on loam's resistance is considered the researcher's main goal in this topic.Thus, the methodicalness of this research has concentrated on analyzing the techniques of the traditional loam construction in Yemen and carrying out lab experiments to examine the pressure resistance for many specimens taken from different loam mixtures and studying the effect of drying them under various climatic conditions; moreover, lab experiments were performed to examine the effect of slow drying through capillarity of protected covering walls, on different loam mixtures.The most important results of this research is the proof that the loam construction elements that were dried under summer climatic conditions show shrinkage cracks more that of dried under winter climatic conditions, thus, it was emerged that the importance of adhering to traditional rule which says that the loam buildings should be built in winter not in summer. The second result is proving that thinning the "fat" and "semi-fat" loams should be used with crushed stone with max. nominal size in the sandy range not using sand with round granules.Also, it has been reached through this research that it is necessary to developing the protecting covers of the loam walls to get a more resistance to denudation factors and to avoid the negativeness of lime or cement plaster to fall from loam walls due to the dissimilarity of factors of the thermal linear hygroscopic extension.