The use of industrial by-products could provide a feasible solutions for the construction industry to reduce the strain on supply of natural aggregate as well as achieving the concept of environmentally friendly binder material by replacing part of Portland cement. This paper reports the results of an experimental study, mainly on the permeability and porosity characteristic of pervious concrete developed by substituting 26% Portland cement with air-cooled blast furnace slag and replacing part of natural coarse aggregate with granular blast furnace slag of different aggregate size and different water/cement ratio. The pervious concrete with lower water cement ratio and 25% GBFS affected either the porosity or the compressive strength of the pervious concrete. As expected, the porosity increased in pervious concrete with bigger aggregate size, but decreased when the smaller aggregate size was used. Partial substitution of coarse aggregate with granular GBFS of the same gradation size did not affect the permeability coefficient. Specimens developed using water cement ratio of 0.34 and coarser aggregate size tend to have a greater water permebility compared with those of 0.3 water/cement ratio.

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In recent years, sustainability and environmental effect of concrete became the main concern. Substituting cement with the other cementitious material without decreasing mechanical properties of a mixture could save energy, reduce greenhouse effect due to mining, calcination and limestone refining. Therefore, some industrial by-products such as fly ash, silica fume, and Ground Iron Blast Furnace Slag (GIBFS) would be used in this study to substitute cement and aggregate. This substitution would be applied on the porous concrete mixture to minimize the environmental effect. Slag performance will be optimized by trying out variations of fly ash, silica fume, and slag as cement substitution material in mortar mixture. The result is narrowed into two types of substitution. First, reviewed from the fly ash substitution effect on binder material, highest compressive strength 16.2 MPa was obtained from mixture composition 6% fly ash, 3% silica fume and 17% grinding granular blast-furnace slag. Second, reviewed from slag types as cement substitution and silica fume substitution, highest compressive strength 15.2 MPa was obtained from mortar specimens with air-cooled blast furnace slag. It composed with binder material 56% Portland composite cement, 15% fly ash, 3% silica fume and 26% air-cooled blast furnace slag. Considering the cement substitution, the latter mixture was chosen.

Wood fiber has long been known as fiber reinforcement for concrete . Because of the availability and low cost of production, natural fiber has been used in less developed countries where conventional building materials are very expensive. Fiber added to cement composite for increasing toughness, strength, impact resistance and resistance to fire.In this study, initially it is expected to develop an environmentally matrix binder for the composite by utilizing fly ash as the largest proportion of the matrix binder, silica fume and limestone.Fillers used in this study are differentiated into sawdust and wood shavel. Wood shavel filler were on two condition : treated in base liquid and untreated. The particle size of the sawdust used for the composite were those retained on ≠ 0.60 mm sieve size, while wood shavelgradation was used as received.Results of the flow test of fresh mortar for the entire design matrix either without or with filler are very low, that do not meet the flow specification standard. The limestone matrix using 35 % by volume has a low compressive strength , as it acts as a diluent in the mixture. The optimized volume proportion of matrix composites is 12 % (filler) : 47 % (binder) : 41 % (water). This composite has a dimensional stability, compressive strength of 211.6 kg/cm2 > minimum requirement of cement board ( 150 kg/cm2 ), while the flexural strength 73.3 Kg/cm2 < provision of cement board ( 90-150 Kg/cm2 ) .The density of the composite boards is 1.28 gr/cm3, and this can be considered high, but this also causes the composite board difficult to be cut and installed. Most of the test results on the composite board referring to JIS A 5908 do not fit the provision for the cement boards, although the difference is not too great. Therefore, during the production, compaction and curing or post-production treatment need to be considered.

Asphalt Concrete – Wearing Course (AC-WC) is a surface layer of flexible pavement which have direct contact with vehicle wheel. One of the surface layer damage categories is the wheel track (rutting). In this research, the experiment was done by using industrial waste of granite stone production in the form of dust as filler in the AC-WC mixture. The variation of filler content used are 3%, 4.5%, 6%, 7.5% and 9% with cement filler as comparator. The test was conducted by using wheel tracking machine on temperature of 60˚C, 45˚C and 30˚C. The test result shows that the optimum filler content using granite dust in the AC-WC mixture is 3%. Meanwhile the optimum filler content on the asphalt concrete using cement filler is 7.5%. Thus, it shows that the higher temperature cause the ability of maintaining the wheel track decreased. Furthermore, if looking at the relation between dynamical stability, deformation depth and deformation velocity on filler concentration is not linear.