จำนวน Repository ( 6 )
กำลังอัดความสามารถเก็บกักคลอไรด์และสัมประสิทธ์การแพร่คลอไรด์ของคอนกรีตผสมเถ้าก้นเตาบดละเอียดและผงหินปูน
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.
การพัฒนาผลิตภัณฑ์ของที่ระลึกจากหินเพอร์ไลต์ด้วยการตกแต่งกลิ่น
Research on the development of souvenir products from research and development of scientific research applications using scientific research methods Create a blog as a tool. Ask experts in the development of souvenir products that are suitable for weddings. 3 types. Most experts choose the format. Contemporary styles and modern forms of invention with a pattern that is not ancient and not too advanced. The colors of contemporary styles are adjusted with modern styles. Cost reduction in the production of souvenirs Then comparing the efficiency of the odor release between perlite stone scent decoration and postmodern. Based on gas chromatography-mass spectometry (GC-MS) technique it was found that the release of the aroma of perlite coated with non-coated peril stone film And postmodern in various time periods that are measured by% peak area Compared by setting it in the open system Saw that the amount of substance decreased with time The coated perlite stone keeps the smell well after 23 days more than the coated perlite stone. And the bushes that have released the fragrance for a minimum of 11 days Then study the satisfaction of the target group on the development of the perlite stone by the scent decoration. By dividing the 4 aspects of the study namely the product side it was found that most respondents had the highest level of satisfaction (4.60) in terms of materials. Most respondents were satisfied at the highest level (4.70). The respondents were satisfied at a high level (4.39) and the value of the respondents were mostly satisfied at a high level (4.15).
Compressive strength determination of bottom ash mixed with dust stone and portland cement
This research was to determine the appropriated mixing ratio of bottom ash and admixture (dust rock and Portland cement type 1) for improving the compressive strength. Bottom ash was used instead of soil and the quantities of admixture were 0 2 4 6 8 and 10% by dry weight of bottom ash. The specimens were cured for 7 14 28 and 90 days. Results of compressive strength test show that the admixture of 8% was the best mixing ratio. The increasing primary strength is developed from hydration reaction and the increasing secondary strength at 90 days is developed from pozzolanic reaction. Moreover the compressive strength of this specimen is close to the compressive strength of laterite
ผลของน้ำมันเครื่องใช้แล้วต่อสมบัติของมอร์ต้าร์หินพัมมิซผสมเถ้าไม้ยางพารา
Properties of pumice aggregate mortar blended with para rubber wood fly ash (PRWFA) replaced type 1 ordinary Portland cement (OPC) in different proportions of 020 and 40 wt.% OPC and dosed with used engine oil (UEO) in proportions of 00.2 and 0.3 wt% water were investigated. Whole mix type specimens size was cast in 555 cm and curing in ambient temperature for 7 and 28 days. Testing series of physico-mechanical properties performed on bulk density water absorption electrical resistivity Shore hardness and compressive strength were determined. Moreover microstructure via scanning electron microscope was analyzed. Effect of curing ages enhanced properties of samples such as electrical resistivity Shore hardness and compressive strength. Particularly the 28-day specimen that contained 20wt.% PRWFA and 0.2wt.% UEO provided bulk density of 1.61 g/cm3 and highest compressive strength of 22.09 MPa.
การใช้ประโยชน์กากดินขาวเหลือทิ้งจากเหมืองหินเป็นมวลรวมละเอียดสำหรับ ก่อสร้างอาคารประหยัดพลังงานแบบสำเร็จรูป
The Kaolinite development process to improve the characteristics. The Kaolinite mixed ratios are 10% 20% 30% and 40% and the result indicated that the experiment mortar-mix ratio at 0:8:2.75:0.2:0.05:0.04:0.5 of cement powder sand Kaolinite limestone superplasticised and clean water compared to No MK control sample covered ASTM standard in tensile strength more than 100 ksc compressive strength of MK20% with superplasticised at 434 ksc. The water absorption values under the standard passed