لابراتوار مواد ساختمانی
برای هر نوع ساختمان (سرک، تعمیر، بند، نهر و غیره ) ضرورت به استعمال مواد ساختمانی مناسب میباشد. برای اینکه ساختمان مقاوم و با دوام باشد باید از مواد ساختمانی که دارای کیفیت و جنسیت خوب باشد، استفاده نمائیم. پس به این منظور باید موا ساختمانی در ابتدای کار و جریان کار تست وارزیابی شود تا از کیفیت و جنسیت آن مطمئن شویم. اکثرا" عوامل که باعث تخریب یک ساختمان و یا ناکام شدن یک پروژه میشود، عبارت ازاستعمال مواد ساختمانی ناقص و دارای کیفیت پائین میباشد.
در لابراتوا برای هر مواد تست های مخصوص میباشد که ما بعضی از تست های آنرا که در افغانستان اجرا میشود، عملی نمودیم. انواع تست ها را در ذیل بیان مینمائیم:
Concrete materials
a) Cement:
1- Standard specification for Portland cement
2- Chemical analysis of hydraulic cement
3- Air content of hydraulic cement
4- Test for bleeding by Portland cement
5- Time of setting of cement
6- Strength of hydraulic cement mortars
7- Heat of hydration of cement
8- Density of hydraulic cement
9- Bleeding of cement pastes and mortars
10- Chemical resistance of mortars
11- Fly ash for use in concrete
b) Aggregate:
12- Fineness modulus of aggregates
13- Sieve analysis for fine and coarse aggregate
14- Test for material finer than No. 200 sieve
15- Unit weight and voids
16- Specific gravity and absorption of coarse aggregate
17- Specific gravity and absorption of fine aggregate
18- Surface moisture in fine aggregate
19- Total moisture content of aggregate
20- Frost resistance of coarse aggregate
21- Organic impurities in fine aggregate
22- Resistance to absorption
23- Light weight pieces in fine aggregate reactivity of cement-aggregate combination
24- Petrographic examination of aggregates
25- Potential reactivity of aggregate
26- Scratch hardness of coarse aggregate
27- Standard specifications for aggregate
28- Soundness of aggregates
29- Potential volume change of cement-aggregate combination
30- Clay lumps and friable particles in aggregates
31- Potential reactivity of carbonate rocks
32- Sampling aggregates
33- Sampling concrete aggregates and aggregate source
34- Calculation of fineness modulus of aggregate
35- Test absorption by aggregates
c) Admixtures:
36- Testing air-entraining admixtures
37- Air-entraining admixtures
38- Chemical admixtures
39- Testing fly ash for use in concrete
d) Water:
40- Requirements for water in mixing or curing concrete
Freshly mixed concrete:
41- Temperature of freshly mixed concrete
42- Test for remolding fresh concrete
43- Unit weight, yield and sir content
44- Air content by the volumetric method
45- Test for bleeding of concrete
46- Making and curing test specimens in the laboratory
47- Sampling freshly mixed concrete
48- Slump of Portland cement concrete
49- Making and curing concrete test specimens in the field
50- Ready-mixed concrete
51- Ball penetration in fresh concrete
52- Test for effect of grinding during mixing on aggregates
53- Calculating ice needed to mix concrete of a specified temperature
54- Test for concrete mixer performance
55- Test for cement content of fresh concrete
56- Test for time of setting by penetration resistance
57- Selecting proportions for normal, heavy-weight and mass concrete
Reinforcing materials:
58- Deformed and plain billet-steel bars
59- Rail-Steel deformed and plain bars
60- Welded steel wire fabric
61- Axle-Steel deformed and plain bars
62- Cold-Drawn steel wire
63- Welded deformed steel wire fabric
64- Fabricated deformed steel bar mats
Curing compounds:
65- Spray ability and moisture loss through curing membrane
66- Sheet materials for curing concrete
67- Drying time and reflection of curing membrane
68- Cloth, burlap, jute
Joint materials:
69- Testing performed expansion joints fillers
70- Sealing compounds, elastomeric copper flat products (plate, bar, sheet and strip
71- Evaluating wood-base fiber and particle panel materials
72- Testing joints sealer, cold-application
73- Concrete joints sealer, hot-poured elastic type
Hardened concrete:
74- Compressive strength of cylindrical specimens
75- Flexural strength
76- Resistance to freezing and thawing
77- Rebound numbers of concrete
78- Specific gravity, absorption and voids
79- Cement content
80- Determination of air-void content and parameters of the air-void system
81- Scaling resistance to deicing chemicals
82- Water permeability
83- Abrasion resistance
84- Petroghraphic examination
85- Penetration resistance
86- Abrasion-Erosion resistance
87- Ultimate tensile strain capacity
88- Splitting tensile strength
89- Air content
90- Longitudinal shear strength
91- Transverse shear strength
92- Determining mechanical properties
93- Making, accelerating curing and testing of compression specimens
Bitumen
93- Penetration test
94- Ductility test
95- Viscosity test
96- Float test
97- Specific Gravity test
98- Softening Point test
99- Flash and Fire Point test
100- Solubility test
101- Spot test
102- Loss on heating test
103- Water content