The aim of this study is developed of alkali activated high calcium fly ash to use as cementitious material to replace Portland cement. The mixture of mortar made from fly ash and sodium hydroxide solution (NaOH) was used to activate strength at concentrations of 2 4 6 and 8 molars. Superplasticizer was used to control the flow of mortar in the rage of 105 – 110. The compressive strength of mortar was determined at 7 28 45 and 60 days. The acid resistance of mortars due to sulfuric at a concentration of 3% were also investigated. The results showed the mortar made from high calcium fly ash with sodium hydroxide of 6 molar obtained the highest compressive strength which could be developed compressive strength up to 189 ksc at 60 days. For the acid resistance of mortar it was found that the of use 6 molar of NaOH activated high calcium fly ash binder had the least weight loss due to sulfuric acid attack.

This research was aimed to study the compressive strength chloride binding capacity and chloride diffusion coefficient of concrete replaced by ground bottom ash (GBA) and limestone powder in ordinary Portland cement (OPC). The water to binder ratios were 0.55. The results showed that the compressive strength of concrete with GBA was lesser than that of OPC concrete at 28 days. Also the compressive strength of concrete with limestone powder was close to that of OPC concrete and compressive strength could develop of concrete with GBA 20% and 30% higher than that of OPC concrete at 56 days. Moreover the total chloride of the concrete containing GBA and limestone powder was less than that of OPC concrete. The chloride penetration of the concrete containing GBA and limestone powder was less than that of OPC concrete. The chloride binding capacity of the concrete made with ground bottom ash and limestone powder were higher than that of OPC concrete. Finally the chloride diffusion coefficient of the concrete containing GBA and limestone powder was less than that of OPC concrete.

This research uses a participatory action methodology which is divided into 3 phases: meanings analysis significance and housing problems of low-income people. Development stage of local community cooperation activities including the system synthesis and mechanism of cooperation of local communities towards housing security use in-depth interviews group chat workshop lesson learned together with observation and field notes. The target groups are members and the committee of Baan Mankong Tha Makham community leader the network development partner’s representatives and relevant officers. This focuses on qualitative data collecting which uses content analysis and summarization. The study found that: for the meaning the importance and the housing problems of low-income people the following are considered: (1) Meaning and importance of the word Nice city and Tha Makham Model. It consists of three dimensions: dimension of residence dimension of happiness and dimension of quality of life. (2) housing Problems of low-income people such as urban problems residence condition problems the problem of inequality and problems of accessing capital. Most of people are low-income and disadvantaged who live in urban areas. Some live with relatives or in a rented house on the land of Royal Property land of a temple and land of State Railway of Thailand. Some don’t have any land or residence of their own. Some were expelled and their houses were dismantled from the area. The system and mechanism of cooperation of local communities towards housing security has four characteristics as follows: (1) People system including members committee as well as committees that look after and manage various funds in Baan Mankong project. 2) The organizational system i.e. the local government organization and related agencies (3) Information system i.e. information and various activities related to the development of Baan Mankong project. 4) Capital system consists of monetary capital or budget such as fund credit community welfare and social capital. These are the value of coexistence support sacrifice and sharing including social relations that requires 3 main thinking bases: (1) thinking principles e.g. living according to the concept of sufficiency economy and self-reliance (2) principles namely Baan Mankong principle saving principle cooperative principle house construction principles and development principle towards sustainability and (3) doing principles refer to the participation on thinking participating doing developing and taking the benefits. .

Deterioration of reinforced concrete deep beam structure caused by chloride is severe andtakes up wide area even though the structure is not exposed to sea water or brackish water. Even the structure which is far from sea water or brackish water is affected by this problem.When the reinforced concreate deep beam structure is affected by chloride steel reinforced inside the structure is corroded resulting in reducing the cross-sectional area of the reinforced steel affecting load capacity deflection and beam failure. If there is no repair or strengthening such capabilities are continuously reduced until it is no longer safe to use the beam. Therefore it is necessary to repair or strengthening the deteriorated structure to be safely used. This research investigated strengthening of deteriorated reinforced concrete deep beam caused by chloride with 4 formats of carbon Fiber sheets to seek guidelines for the most efficient strengthening. The resultshowed that the strengthening by the 4 format of carbon fiber sheet could increase ultimate loadcapability yet could not improve ductility of the deteriorated beam to become close to the beamthat is not deteriorated. The strengthening that could increase the maximum ultimate load capability was the table format strengthening. In addition the strengthening that the carbon fiber making 45 degrees with the length of the beam could best prevent diagonal cracks.

This research is presented by the designing and constructing test package that are divided into three types; the liquid insulator solid insulator and gas insulator. These materials are provided by in country in order to construct the test package for the results of expected to have at least error. This leads to reliability and validity in this study. The design of the liquid insulator of test package was conducted by the standard IEC 156 in which the material tested used oil transformer. Additionally its solid insulation was the range of catching objects and adjusting using the sheet of bakelite. Furthermore its gas insulation used acrylic was consisted of gas inside oxygen of pressure at 2 Bar. Three types of test could be supplied AC high voltage to test package causing of breakdown via insulators. After that taking note the value of breakdown was the liquid insulator of test material at 29.86kV its solid insulator at 36.32kV and its gas insulator (oxygen) at 48.40 kV