地热施工后的豆石混凝土回填(国外英文资料).docVIP

地暖施工后的豆石混凝土回填(国外英文资料) The concrete backfill after construction of ground heating ? At the end of the floor heating construction is pisolite concrete backfill, floor heating system is installed, suppression test by party a and party b after the acceptance of common, can be laid pisolite concrete. Suppress the test method: when all circuits of a branch are installed, the test is suppressed. Open the diversity of water valve for water loop, the diversity of water mouth with water, water supply of each loop pipe filled with water and stable, close the diversity of water return valve, the diversity of water installation for recharging drawdown pressure gauge, water pressure test, the test pressure should not be less than 0.6 Mpa. When test pressure is 0.6 Mpa, observe the pressure gauge, when the pressure gauge to keep this value reaches an hour or an hour of pressure drop is less than 0.05 Mpa, show that pavement line is normal. For a freeze on construction in stages should be taken under the circumstance of suppression test, the first stage, after the outfit in heating tube, crackdown test, this phase should keep to the heating of the heat protective layer are completed, then blow dry heating tube of water blowing off; In the second phase, after the floor decoration layer was installed, the experiment was repeated and the water in the tube was blown away. Each floor heating construction area laying is completed, party a shall arrange pisolite concrete cover of backfill work, backfill should be able to fully cover the thickness of floor heating pipes, if cannot promptly backfill layer should be objective, should be to isolate area, other irrelevant personnel shall not enter. After the floor heating and decoration layer is finished, the ground is not to be drilled, perforate and cut the ground. The pavement of the concrete protection layer of ground heating bean stone: (1). Material requirements The cement: the use of Pc32.5 cement. Sand: medium sand or coarse sand, not